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Build Information

Successful build of Mortar, reference master (a07e71), with Swift 6.1 for macOS (SPM) on 1 Mar 2026 04:28:57 UTC.

Swift 6 data race errors: 8

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete -Xswiftc -enable-upcoming-feature -Xswiftc StrictConcurrency -Xswiftc -enable-upcoming-feature -Xswiftc DisableOutwardActorInference -Xswiftc -enable-upcoming-feature -Xswiftc GlobalActorIsolatedTypesUsability -Xswiftc -enable-upcoming-feature -Xswiftc InferSendableFromCaptures

Build Log

========================================
RunAll
========================================
Builder version: 4.68.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/jmfieldman/Mortar.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/jmfieldman/Mortar
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at a07e71f stacks for macOS
Cloned https://github.com/jmfieldman/Mortar.git
Revision (git rev-parse @):
a07e71f1ddd470946a64f1eaae788cf8a95d2bcb
SUCCESS checkout https://github.com/jmfieldman/Mortar.git at master
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/jmfieldman/Mortar.git
https://github.com/jmfieldman/Mortar.git
{
  "dependencies" : [
    {
      "identity" : "combineex",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "0.0.46",
            "upper_bound" : "1.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/jmfieldman/CombineEx.git"
    }
  ],
  "manifest_display_name" : "Mortar",
  "name" : "Mortar",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "17.0"
    },
    {
      "name" : "macos",
      "version" : "14.0"
    },
    {
      "name" : "tvos",
      "version" : "17.0"
    }
  ],
  "products" : [
    {
      "name" : "Mortar",
      "targets" : [
        "Mortar"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "MortarTests",
      "module_type" : "SwiftTarget",
      "name" : "MortarTests",
      "path" : "MortarTests",
      "sources" : [
        "MortarLayoutTests.swift",
        "TestUtilities.swift"
      ],
      "target_dependencies" : [
        "Mortar"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Mortar",
      "module_type" : "SwiftTarget",
      "name" : "Mortar",
      "path" : "Mortar",
      "product_dependencies" : [
        "CombineEx"
      ],
      "product_memberships" : [
        "Mortar"
      ],
      "sources" : [
        "Exports.swift",
        "LayoutGuide+MortarCoordinate.swift",
        "ManagedViews/CollectionView/ManagedCollectionView.swift",
        "ManagedViews/CollectionView/ManagedCollectionViewCell.swift",
        "ManagedViews/CollectionView/ManagedCollectionViewHeaderFooterView.swift",
        "ManagedViews/CollectionView/ManagedCollectionViewSection.swift",
        "ManagedViews/ManagedViewCommon.swift",
        "ManagedViews/TableView/ManagedTableView.swift",
        "ManagedViews/TableView/ManagedTableViewCell.swift",
        "ManagedViews/TableView/ManagedTableViewDelegation.swift",
        "ManagedViews/TableView/ManagedTableViewHeaderFooterView.swift",
        "ManagedViews/TableView/ManagedTableViewSection.swift",
        "ManagedViews/TableView/StandardCells/StandardTableViewCell.swift",
        "Mortar.swift",
        "MortarAnchorProvider.swift",
        "MortarAxisPriorities.swift",
        "MortarCGFloatable.swift",
        "MortarConstraint.swift",
        "MortarConstraintGroup.swift",
        "MortarCoordinate.swift",
        "MortarError.swift",
        "MortarGestureRecognizer.swift",
        "MortarObjectAttachments.swift",
        "MortarReactive.swift",
        "MortarScrollView.swift",
        "MortarStyle.swift",
        "MortarTextDelegation.swift",
        "MortarViewAliases.swift",
        "Operators.swift",
        "View+LayoutStack.swift",
        "View+MortarCoordinate.swift",
        "View+ResultBuilder.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.9"
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete -Xswiftc -enable-upcoming-feature -Xswiftc StrictConcurrency -Xswiftc -enable-upcoming-feature -Xswiftc DisableOutwardActorInference -Xswiftc -enable-upcoming-feature -Xswiftc GlobalActorIsolatedTypesUsability -Xswiftc -enable-upcoming-feature -Xswiftc InferSendableFromCaptures
Building for debugging...
[0/3] Write sources
[2/3] Write swift-version-2F0A5646E1D333AE.txt
[4/45] Emitting module CombineEx
[5/49] Compiling CombineEx PromoteFailure.swift
[6/49] Compiling CombineEx PropertyMap.swift
[7/49] Compiling CombineEx ReplaySubject.swift
[8/49] Compiling CombineEx SendableOverloads.swift
[9/49] Compiling CombineEx Sink.swift
[10/49] Compiling CombineEx MutableProperty.swift
[11/49] Compiling CombineEx PersistentProperty.swift
[12/49] Compiling CombineEx Property.swift
[13/49] Compiling CombineEx MapOptional.swift
[14/49] Compiling CombineEx MapVoid.swift
[15/49] Compiling CombineEx Pipe.swift
[16/49] Compiling CombineEx PrependDynamic.swift
[17/49] Compiling CombineEx FlatMapLatest.swift
[18/49] Compiling CombineEx IgnoreFailure.swift
[19/49] Compiling CombineEx JustFailEmpty.swift
[20/49] Compiling CombineEx MapOnMainActor.swift
[21/49] Compiling CombineEx AttemptMap.swift
[22/49] Compiling CombineEx CombinePrevious.swift
[23/49] Compiling CombineEx CompleteAfter.swift
[24/49] Compiling CombineEx CompositeError.swift
[25/49] Compiling CombineEx Custom.swift
[26/49] Compiling CombineEx DeferredFutureDemuxer.swift
[27/49] Compiling CombineEx DemoteFailure.swift
[28/49] Compiling CombineEx EventHandling.swift
[29/49] Compiling CombineEx EventHandlingMainActor.swift
[30/49] Compiling CombineEx FilterProperty.swift
[31/49] Compiling CombineEx DeferredFuture+Operators.swift
[32/49] Compiling CombineEx DeferredFuture.swift
[33/49] Compiling CombineEx DeferredPublisher+Operators.swift
[34/49] Compiling CombineEx DeferredPublisher.swift
[35/49] Compiling CombineEx Exports.swift
[36/49] Compiling CombineEx Aggregation+DeferredFuture.swift
[37/49] Compiling CombineEx Aggregation+DeferredPublisher.swift
[38/49] Compiling CombineEx Aggregation+Publisher.swift
[39/49] Compiling CombineEx Aggregation.swift
[40/49] Compiling CombineEx AsyncFuture.swift
[41/49] Compiling CombineEx PropertyProtocol+Operators.swift
[42/49] Compiling CombineEx UIProperty.swift
[43/49] Compiling CombineEx Publisher+SchedulerExtensions.swift
[44/49] Compiling CombineEx UIScheduler.swift
[45/49] Compiling CombineEx Action.swift
[46/49] Compiling CombineEx ActionTrigger.swift
[47/49] Compiling CombineEx BindTarget.swift
[48/49] Compiling CombineEx KvoProperty.swift
[49/49] Compiling CombineEx SinkProviding.swift
[50/79] Emitting module Mortar
/Users/admin/builder/spi-builder-workspace/Mortar/ManagedViews/ManagedViewCommon.swift:28:13: warning: var 'kAssociatedPropertyKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
26 | // MARK: Associated Properties
27 |
28 | private var kAssociatedPropertyKey = 0
   |             |- warning: var 'kAssociatedPropertyKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |             |- note: convert 'kAssociatedPropertyKey' to a 'let' constant to make 'Sendable' shared state immutable
   |             |- note: add '@MainActor' to make var 'kAssociatedPropertyKey' part of global actor 'MainActor'
   |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
29 | private var kAssociatedMutablePropertyKey = 0
30 |
/Users/admin/builder/spi-builder-workspace/Mortar/ManagedViews/ManagedViewCommon.swift:29:13: warning: var 'kAssociatedMutablePropertyKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
27 |
28 | private var kAssociatedPropertyKey = 0
29 | private var kAssociatedMutablePropertyKey = 0
   |             |- warning: var 'kAssociatedMutablePropertyKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |             |- note: convert 'kAssociatedMutablePropertyKey' to a 'let' constant to make 'Sendable' shared state immutable
   |             |- note: add '@MainActor' to make var 'kAssociatedMutablePropertyKey' part of global actor 'MainActor'
   |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
30 |
31 | func __AssociatedMutableProperty<T>(_ object: AnyObject, _ type: T.Type, _ initialValue: T, _ created: inout Bool) -> MutableProperty<T> {
/Users/admin/builder/spi-builder-workspace/Mortar/MortarCoordinate.swift:96:16: warning: main actor-isolated property 'coordinate' cannot be used to satisfy nonisolated requirement from protocol 'MortarCoordinateConvertible'; this is an error in the Swift 6 language mode
 42 |
 43 | public protocol MortarCoordinateConvertible {
 44 |     var coordinate: MortarCoordinate { get }
    |         `- note: requirement 'coordinate' declared here
 45 | }
 46 |
    :
 93 | }
 94 |
 95 | extension MortarView: MortarCoordinateConvertible {
    |                       `- note: add '@preconcurrency' to the 'MortarCoordinateConvertible' conformance to defer isolation checking to run time
 96 |     public var coordinate: MortarCoordinate {
    |                `- warning: main actor-isolated property 'coordinate' cannot be used to satisfy nonisolated requirement from protocol 'MortarCoordinateConvertible'; this is an error in the Swift 6 language mode
 97 |         .init(
 98 |             item: self,
/Users/admin/builder/spi-builder-workspace/Mortar/MortarError.swift:10:16: warning: static property 'installBag' is not concurrency-safe because non-'Sendable' type 'NSObject' may have shared mutable state; this is an error in the Swift 6 language mode
 8 | public enum MortarError {
 9 |     static let errorSubject = MutableProperty<String?>(nil)
10 |     static let installBag = NSObject()
   |                |- warning: static property 'installBag' is not concurrency-safe because non-'Sendable' type 'NSObject' may have shared mutable state; this is an error in the Swift 6 language mode
   |                |- note: add '@MainActor' to make static property 'installBag' part of global actor 'MainActor'
   |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
11 |
12 |     static func emit(_ message: String) {
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/usr/include/objc/NSObject.h:53:12: note: class 'NSObject' does not conform to the 'Sendable' protocol
 51 | OBJC_ROOT_CLASS
 52 | OBJC_EXPORT
 53 | @interface NSObject <NSObject> {
    |            `- note: class 'NSObject' does not conform to the 'Sendable' protocol
 54 | #pragma clang diagnostic push
 55 | #pragma clang diagnostic ignored "-Wobjc-interface-ivars"
/Users/admin/builder/spi-builder-workspace/Mortar/MortarObjectAttachments.swift:8:13: warning: var 'kPermanentObjDictAssociationKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 6 | import Foundation
 7 |
 8 | private var kPermanentObjDictAssociationKey = 0
   |             |- warning: var 'kPermanentObjDictAssociationKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |             |- note: convert 'kPermanentObjDictAssociationKey' to a 'let' constant to make 'Sendable' shared state immutable
   |             |- note: add '@MainActor' to make var 'kPermanentObjDictAssociationKey' part of global actor 'MainActor'
   |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 9 |
10 | /// Returns a dictionary used for storing permanently-associated values, creating one if it doesn't exist.
/Users/admin/builder/spi-builder-workspace/Mortar/MortarStyle.swift:12:13: warning: var 'kStyleBoxAssociationKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 10 | #endif
 11 |
 12 | private var kStyleBoxAssociationKey = 0
    |             |- warning: var 'kStyleBoxAssociationKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: convert 'kStyleBoxAssociationKey' to a 'let' constant to make 'Sendable' shared state immutable
    |             |- note: add '@MainActor' to make var 'kStyleBoxAssociationKey' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 13 |
 14 | /// A class that wraps an `[NSAttributedString.Key: Any]` for use with associated
/Users/admin/builder/spi-builder-workspace/Mortar/View+LayoutStack.swift:7:23: warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'MortarMainThreadLayoutStack' may have shared mutable state; this is an error in the Swift 6 language mode
 4 | //
 5 |
 6 | class MortarMainThreadLayoutStack {
   |       `- note: class 'MortarMainThreadLayoutStack' does not conform to the 'Sendable' protocol
 7 |     public static let shared = MortarMainThreadLayoutStack()
   |                       |- warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'MortarMainThreadLayoutStack' may have shared mutable state; this is an error in the Swift 6 language mode
   |                       |- note: add '@MainActor' to make static property 'shared' part of global actor 'MainActor'
   |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 8 |
 9 |     private var stackDepth: Int = 0
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSView.h:83:1: warning: main actor-isolated initializer 'init(frame:)' cannot be used to satisfy nonisolated requirement from protocol 'MortarFrameInitializable'; this is an error in the Swift 6 language mode
 81 | @interface NSView : NSResponder <NSAnimatablePropertyContainer, NSUserInterfaceItemIdentification, NSDraggingDestination, NSAppearanceCustomization, NSAccessibilityElement, NSAccessibility>
 82 |
 83 | - (instancetype)initWithFrame:(NSRect)frameRect NS_DESIGNATED_INITIALIZER;
    | |- warning: main actor-isolated initializer 'init(frame:)' cannot be used to satisfy nonisolated requirement from protocol 'MortarFrameInitializable'; this is an error in the Swift 6 language mode
    | `- note: add 'nonisolated' to 'init(frame:)' to make this initializer not isolated to the actor
 84 | - (nullable instancetype)initWithCoder:(NSCoder *)coder NS_DESIGNATED_INITIALIZER;
 85 |
/Users/admin/builder/spi-builder-workspace/Mortar/View+ResultBuilder.swift:65:23: note: add '@preconcurrency' to the 'MortarFrameInitializable' conformance to defer isolation checking to run time
 60 |
 61 | public protocol MortarFrameInitializable {
 62 |     init(frame: CGRect)
    |     `- note: mark the protocol requirement 'init(frame:)' 'async' to allow actor-isolated conformances
 63 | }
 64 |
 65 | extension MortarView: MortarFrameInitializable {}
    |                       `- note: add '@preconcurrency' to the 'MortarFrameInitializable' conformance to defer isolation checking to run time
 66 |
 67 | public extension MortarFrameInitializable where Self: MortarView {
[51/82] Compiling Mortar ManagedTableViewCell.swift
[52/82] Compiling Mortar ManagedTableViewDelegation.swift
[53/82] Compiling Mortar ManagedTableViewHeaderFooterView.swift
[54/82] Compiling Mortar MortarError.swift
/Users/admin/builder/spi-builder-workspace/Mortar/MortarError.swift:10:16: warning: static property 'installBag' is not concurrency-safe because non-'Sendable' type 'NSObject' may have shared mutable state; this is an error in the Swift 6 language mode
 8 | public enum MortarError {
 9 |     static let errorSubject = MutableProperty<String?>(nil)
10 |     static let installBag = NSObject()
   |                |- warning: static property 'installBag' is not concurrency-safe because non-'Sendable' type 'NSObject' may have shared mutable state; this is an error in the Swift 6 language mode
   |                |- note: add '@MainActor' to make static property 'installBag' part of global actor 'MainActor'
   |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
11 |
12 |     static func emit(_ message: String) {
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/usr/include/objc/NSObject.h:53:12: note: class 'NSObject' does not conform to the 'Sendable' protocol
 51 | OBJC_ROOT_CLASS
 52 | OBJC_EXPORT
 53 | @interface NSObject <NSObject> {
    |            `- note: class 'NSObject' does not conform to the 'Sendable' protocol
 54 | #pragma clang diagnostic push
 55 | #pragma clang diagnostic ignored "-Wobjc-interface-ivars"
/Users/admin/builder/spi-builder-workspace/Mortar/MortarObjectAttachments.swift:8:13: warning: var 'kPermanentObjDictAssociationKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 6 | import Foundation
 7 |
 8 | private var kPermanentObjDictAssociationKey = 0
   |             |- warning: var 'kPermanentObjDictAssociationKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |             |- note: convert 'kPermanentObjDictAssociationKey' to a 'let' constant to make 'Sendable' shared state immutable
   |             |- note: add '@MainActor' to make var 'kPermanentObjDictAssociationKey' part of global actor 'MainActor'
   |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 9 |
10 | /// Returns a dictionary used for storing permanently-associated values, creating one if it doesn't exist.
[55/82] Compiling Mortar MortarGestureRecognizer.swift
/Users/admin/builder/spi-builder-workspace/Mortar/MortarError.swift:10:16: warning: static property 'installBag' is not concurrency-safe because non-'Sendable' type 'NSObject' may have shared mutable state; this is an error in the Swift 6 language mode
 8 | public enum MortarError {
 9 |     static let errorSubject = MutableProperty<String?>(nil)
10 |     static let installBag = NSObject()
   |                |- warning: static property 'installBag' is not concurrency-safe because non-'Sendable' type 'NSObject' may have shared mutable state; this is an error in the Swift 6 language mode
   |                |- note: add '@MainActor' to make static property 'installBag' part of global actor 'MainActor'
   |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
11 |
12 |     static func emit(_ message: String) {
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/usr/include/objc/NSObject.h:53:12: note: class 'NSObject' does not conform to the 'Sendable' protocol
 51 | OBJC_ROOT_CLASS
 52 | OBJC_EXPORT
 53 | @interface NSObject <NSObject> {
    |            `- note: class 'NSObject' does not conform to the 'Sendable' protocol
 54 | #pragma clang diagnostic push
 55 | #pragma clang diagnostic ignored "-Wobjc-interface-ivars"
/Users/admin/builder/spi-builder-workspace/Mortar/MortarObjectAttachments.swift:8:13: warning: var 'kPermanentObjDictAssociationKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 6 | import Foundation
 7 |
 8 | private var kPermanentObjDictAssociationKey = 0
   |             |- warning: var 'kPermanentObjDictAssociationKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |             |- note: convert 'kPermanentObjDictAssociationKey' to a 'let' constant to make 'Sendable' shared state immutable
   |             |- note: add '@MainActor' to make var 'kPermanentObjDictAssociationKey' part of global actor 'MainActor'
   |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 9 |
10 | /// Returns a dictionary used for storing permanently-associated values, creating one if it doesn't exist.
[56/82] Compiling Mortar MortarObjectAttachments.swift
/Users/admin/builder/spi-builder-workspace/Mortar/MortarError.swift:10:16: warning: static property 'installBag' is not concurrency-safe because non-'Sendable' type 'NSObject' may have shared mutable state; this is an error in the Swift 6 language mode
 8 | public enum MortarError {
 9 |     static let errorSubject = MutableProperty<String?>(nil)
10 |     static let installBag = NSObject()
   |                |- warning: static property 'installBag' is not concurrency-safe because non-'Sendable' type 'NSObject' may have shared mutable state; this is an error in the Swift 6 language mode
   |                |- note: add '@MainActor' to make static property 'installBag' part of global actor 'MainActor'
   |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
11 |
12 |     static func emit(_ message: String) {
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/usr/include/objc/NSObject.h:53:12: note: class 'NSObject' does not conform to the 'Sendable' protocol
 51 | OBJC_ROOT_CLASS
 52 | OBJC_EXPORT
 53 | @interface NSObject <NSObject> {
    |            `- note: class 'NSObject' does not conform to the 'Sendable' protocol
 54 | #pragma clang diagnostic push
 55 | #pragma clang diagnostic ignored "-Wobjc-interface-ivars"
/Users/admin/builder/spi-builder-workspace/Mortar/MortarObjectAttachments.swift:8:13: warning: var 'kPermanentObjDictAssociationKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 6 | import Foundation
 7 |
 8 | private var kPermanentObjDictAssociationKey = 0
   |             |- warning: var 'kPermanentObjDictAssociationKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |             |- note: convert 'kPermanentObjDictAssociationKey' to a 'let' constant to make 'Sendable' shared state immutable
   |             |- note: add '@MainActor' to make var 'kPermanentObjDictAssociationKey' part of global actor 'MainActor'
   |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 9 |
10 | /// Returns a dictionary used for storing permanently-associated values, creating one if it doesn't exist.
[57/82] Compiling Mortar MortarAnchorProvider.swift
[58/82] Compiling Mortar MortarAxisPriorities.swift
[59/82] Compiling Mortar MortarCGFloatable.swift
[60/82] Compiling Mortar MortarTextDelegation.swift
[61/82] Compiling Mortar MortarViewAliases.swift
[62/82] Compiling Mortar Operators.swift
[63/82] Compiling Mortar MortarConstraint.swift
/Users/admin/builder/spi-builder-workspace/Mortar/MortarConstraint.swift:80:37: warning: main actor-isolated property 'superview' can not be referenced from a nonisolated context; this is an error in the Swift 6 language mode
62 | }
63 |
64 | private func resolveSourceItem(_ item: Any?) throws -> Any? {
   |              `- note: add '@MainActor' to make global function 'resolveSourceItem' part of global actor 'MainActor'
65 |     guard let item else {
66 |         return nil
   :
78 |         switch reference {
79 |         case let .parent(view, block):
80 |             guard let parent = view.superview else {
   |                                     `- warning: main actor-isolated property 'superview' can not be referenced from a nonisolated context; this is an error in the Swift 6 language mode
81 |                 MortarError.emit("Constraint source item must be a subview of a UIView")
82 |                 return nil
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSView.h:87:59: note: property declared here
 85 |
 86 | @property (nullable, readonly, unsafe_unretained) NSWindow *window;
 87 | @property (nullable, readonly, unsafe_unretained) NSView *superview;
    |                                                           `- note: property declared here
 88 | @property (copy) NSArray<__kindof NSView *> *subviews;
 89 | - (BOOL)isDescendantOf:(NSView *)view;
/Users/admin/builder/spi-builder-workspace/Mortar/MortarConstraintGroup.swift:68:24: warning: main actor-isolated property 'translatesAutoresizingMaskIntoConstraints' can not be mutated from a nonisolated context; this is an error in the Swift 6 language mode
 66 |         // Turn off target `translatesAutoresizingMaskIntoConstraints` if it is a view
 67 |         if let targetView = targetItem as? MortarView {
 68 |             targetView.translatesAutoresizingMaskIntoConstraints = false
    |                        `- warning: main actor-isolated property 'translatesAutoresizingMaskIntoConstraints' can not be mutated from a nonisolated context; this is an error in the Swift 6 language mode
 69 |         }
 70 |
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSLayoutConstraint.h:276:16: note: mutation of this property is only permitted within the actor
274 | /* by default, the autoresizing mask on a view gives rise to constraints that fully determine the view's position.  To do anything interesting with constraints, you need to turn that off. IB will turn it off.
275 |  */
276 | @property BOOL translatesAutoresizingMaskIntoConstraints API_AVAILABLE(macos(10.7));
    |                `- note: mutation of this property is only permitted within the actor
277 |
278 | /* constraint based layout engages lazily when someone tries to use it.  If you do all of your constraint set up in -updateConstraints, you might never even receive updateConstraints if no one makes a constraint.  To fix this chicken and egg problem, override this method to return YES if your view needs the window to use constraint based layout.
/Users/admin/builder/spi-builder-workspace/Mortar/MortarCoordinate.swift:96:16: warning: main actor-isolated property 'coordinate' cannot be used to satisfy nonisolated requirement from protocol 'MortarCoordinateConvertible'; this is an error in the Swift 6 language mode
 42 |
 43 | public protocol MortarCoordinateConvertible {
 44 |     var coordinate: MortarCoordinate { get }
    |         `- note: requirement 'coordinate' declared here
 45 | }
 46 |
    :
 93 | }
 94 |
 95 | extension MortarView: MortarCoordinateConvertible {
    |                       `- note: add '@preconcurrency' to the 'MortarCoordinateConvertible' conformance to defer isolation checking to run time
 96 |     public var coordinate: MortarCoordinate {
    |                `- warning: main actor-isolated property 'coordinate' cannot be used to satisfy nonisolated requirement from protocol 'MortarCoordinateConvertible'; this is an error in the Swift 6 language mode
 97 |         .init(
 98 |             item: self,
[64/82] Compiling Mortar MortarConstraintGroup.swift
/Users/admin/builder/spi-builder-workspace/Mortar/MortarConstraint.swift:80:37: warning: main actor-isolated property 'superview' can not be referenced from a nonisolated context; this is an error in the Swift 6 language mode
62 | }
63 |
64 | private func resolveSourceItem(_ item: Any?) throws -> Any? {
   |              `- note: add '@MainActor' to make global function 'resolveSourceItem' part of global actor 'MainActor'
65 |     guard let item else {
66 |         return nil
   :
78 |         switch reference {
79 |         case let .parent(view, block):
80 |             guard let parent = view.superview else {
   |                                     `- warning: main actor-isolated property 'superview' can not be referenced from a nonisolated context; this is an error in the Swift 6 language mode
81 |                 MortarError.emit("Constraint source item must be a subview of a UIView")
82 |                 return nil
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSView.h:87:59: note: property declared here
 85 |
 86 | @property (nullable, readonly, unsafe_unretained) NSWindow *window;
 87 | @property (nullable, readonly, unsafe_unretained) NSView *superview;
    |                                                           `- note: property declared here
 88 | @property (copy) NSArray<__kindof NSView *> *subviews;
 89 | - (BOOL)isDescendantOf:(NSView *)view;
/Users/admin/builder/spi-builder-workspace/Mortar/MortarConstraintGroup.swift:68:24: warning: main actor-isolated property 'translatesAutoresizingMaskIntoConstraints' can not be mutated from a nonisolated context; this is an error in the Swift 6 language mode
 66 |         // Turn off target `translatesAutoresizingMaskIntoConstraints` if it is a view
 67 |         if let targetView = targetItem as? MortarView {
 68 |             targetView.translatesAutoresizingMaskIntoConstraints = false
    |                        `- warning: main actor-isolated property 'translatesAutoresizingMaskIntoConstraints' can not be mutated from a nonisolated context; this is an error in the Swift 6 language mode
 69 |         }
 70 |
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSLayoutConstraint.h:276:16: note: mutation of this property is only permitted within the actor
274 | /* by default, the autoresizing mask on a view gives rise to constraints that fully determine the view's position.  To do anything interesting with constraints, you need to turn that off. IB will turn it off.
275 |  */
276 | @property BOOL translatesAutoresizingMaskIntoConstraints API_AVAILABLE(macos(10.7));
    |                `- note: mutation of this property is only permitted within the actor
277 |
278 | /* constraint based layout engages lazily when someone tries to use it.  If you do all of your constraint set up in -updateConstraints, you might never even receive updateConstraints if no one makes a constraint.  To fix this chicken and egg problem, override this method to return YES if your view needs the window to use constraint based layout.
/Users/admin/builder/spi-builder-workspace/Mortar/MortarCoordinate.swift:96:16: warning: main actor-isolated property 'coordinate' cannot be used to satisfy nonisolated requirement from protocol 'MortarCoordinateConvertible'; this is an error in the Swift 6 language mode
 42 |
 43 | public protocol MortarCoordinateConvertible {
 44 |     var coordinate: MortarCoordinate { get }
    |         `- note: requirement 'coordinate' declared here
 45 | }
 46 |
    :
 93 | }
 94 |
 95 | extension MortarView: MortarCoordinateConvertible {
    |                       `- note: add '@preconcurrency' to the 'MortarCoordinateConvertible' conformance to defer isolation checking to run time
 96 |     public var coordinate: MortarCoordinate {
    |                `- warning: main actor-isolated property 'coordinate' cannot be used to satisfy nonisolated requirement from protocol 'MortarCoordinateConvertible'; this is an error in the Swift 6 language mode
 97 |         .init(
 98 |             item: self,
[65/82] Compiling Mortar MortarCoordinate.swift
/Users/admin/builder/spi-builder-workspace/Mortar/MortarConstraint.swift:80:37: warning: main actor-isolated property 'superview' can not be referenced from a nonisolated context; this is an error in the Swift 6 language mode
62 | }
63 |
64 | private func resolveSourceItem(_ item: Any?) throws -> Any? {
   |              `- note: add '@MainActor' to make global function 'resolveSourceItem' part of global actor 'MainActor'
65 |     guard let item else {
66 |         return nil
   :
78 |         switch reference {
79 |         case let .parent(view, block):
80 |             guard let parent = view.superview else {
   |                                     `- warning: main actor-isolated property 'superview' can not be referenced from a nonisolated context; this is an error in the Swift 6 language mode
81 |                 MortarError.emit("Constraint source item must be a subview of a UIView")
82 |                 return nil
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSView.h:87:59: note: property declared here
 85 |
 86 | @property (nullable, readonly, unsafe_unretained) NSWindow *window;
 87 | @property (nullable, readonly, unsafe_unretained) NSView *superview;
    |                                                           `- note: property declared here
 88 | @property (copy) NSArray<__kindof NSView *> *subviews;
 89 | - (BOOL)isDescendantOf:(NSView *)view;
/Users/admin/builder/spi-builder-workspace/Mortar/MortarConstraintGroup.swift:68:24: warning: main actor-isolated property 'translatesAutoresizingMaskIntoConstraints' can not be mutated from a nonisolated context; this is an error in the Swift 6 language mode
 66 |         // Turn off target `translatesAutoresizingMaskIntoConstraints` if it is a view
 67 |         if let targetView = targetItem as? MortarView {
 68 |             targetView.translatesAutoresizingMaskIntoConstraints = false
    |                        `- warning: main actor-isolated property 'translatesAutoresizingMaskIntoConstraints' can not be mutated from a nonisolated context; this is an error in the Swift 6 language mode
 69 |         }
 70 |
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSLayoutConstraint.h:276:16: note: mutation of this property is only permitted within the actor
274 | /* by default, the autoresizing mask on a view gives rise to constraints that fully determine the view's position.  To do anything interesting with constraints, you need to turn that off. IB will turn it off.
275 |  */
276 | @property BOOL translatesAutoresizingMaskIntoConstraints API_AVAILABLE(macos(10.7));
    |                `- note: mutation of this property is only permitted within the actor
277 |
278 | /* constraint based layout engages lazily when someone tries to use it.  If you do all of your constraint set up in -updateConstraints, you might never even receive updateConstraints if no one makes a constraint.  To fix this chicken and egg problem, override this method to return YES if your view needs the window to use constraint based layout.
/Users/admin/builder/spi-builder-workspace/Mortar/MortarCoordinate.swift:96:16: warning: main actor-isolated property 'coordinate' cannot be used to satisfy nonisolated requirement from protocol 'MortarCoordinateConvertible'; this is an error in the Swift 6 language mode
 42 |
 43 | public protocol MortarCoordinateConvertible {
 44 |     var coordinate: MortarCoordinate { get }
    |         `- note: requirement 'coordinate' declared here
 45 | }
 46 |
    :
 93 | }
 94 |
 95 | extension MortarView: MortarCoordinateConvertible {
    |                       `- note: add '@preconcurrency' to the 'MortarCoordinateConvertible' conformance to defer isolation checking to run time
 96 |     public var coordinate: MortarCoordinate {
    |                `- warning: main actor-isolated property 'coordinate' cannot be used to satisfy nonisolated requirement from protocol 'MortarCoordinateConvertible'; this is an error in the Swift 6 language mode
 97 |         .init(
 98 |             item: self,
[66/82] Compiling Mortar Exports.swift
[67/82] Compiling Mortar LayoutGuide+MortarCoordinate.swift
[68/82] Compiling Mortar ManagedCollectionView.swift
[69/82] Compiling Mortar ManagedCollectionViewCell.swift
[70/82] Compiling Mortar MortarReactive.swift
/Users/admin/builder/spi-builder-workspace/Mortar/MortarStyle.swift:12:13: warning: var 'kStyleBoxAssociationKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 10 | #endif
 11 |
 12 | private var kStyleBoxAssociationKey = 0
    |             |- warning: var 'kStyleBoxAssociationKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: convert 'kStyleBoxAssociationKey' to a 'let' constant to make 'Sendable' shared state immutable
    |             |- note: add '@MainActor' to make var 'kStyleBoxAssociationKey' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 13 |
 14 | /// A class that wraps an `[NSAttributedString.Key: Any]` for use with associated
[71/82] Compiling Mortar MortarScrollView.swift
/Users/admin/builder/spi-builder-workspace/Mortar/MortarStyle.swift:12:13: warning: var 'kStyleBoxAssociationKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 10 | #endif
 11 |
 12 | private var kStyleBoxAssociationKey = 0
    |             |- warning: var 'kStyleBoxAssociationKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: convert 'kStyleBoxAssociationKey' to a 'let' constant to make 'Sendable' shared state immutable
    |             |- note: add '@MainActor' to make var 'kStyleBoxAssociationKey' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 13 |
 14 | /// A class that wraps an `[NSAttributedString.Key: Any]` for use with associated
[72/82] Compiling Mortar MortarStyle.swift
/Users/admin/builder/spi-builder-workspace/Mortar/MortarStyle.swift:12:13: warning: var 'kStyleBoxAssociationKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 10 | #endif
 11 |
 12 | private var kStyleBoxAssociationKey = 0
    |             |- warning: var 'kStyleBoxAssociationKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |             |- note: convert 'kStyleBoxAssociationKey' to a 'let' constant to make 'Sendable' shared state immutable
    |             |- note: add '@MainActor' to make var 'kStyleBoxAssociationKey' part of global actor 'MainActor'
    |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 13 |
 14 | /// A class that wraps an `[NSAttributedString.Key: Any]` for use with associated
[73/82] Compiling Mortar ManagedCollectionViewHeaderFooterView.swift
/Users/admin/builder/spi-builder-workspace/Mortar/ManagedViews/ManagedViewCommon.swift:28:13: warning: var 'kAssociatedPropertyKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
26 | // MARK: Associated Properties
27 |
28 | private var kAssociatedPropertyKey = 0
   |             |- warning: var 'kAssociatedPropertyKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |             |- note: convert 'kAssociatedPropertyKey' to a 'let' constant to make 'Sendable' shared state immutable
   |             |- note: add '@MainActor' to make var 'kAssociatedPropertyKey' part of global actor 'MainActor'
   |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
29 | private var kAssociatedMutablePropertyKey = 0
30 |
/Users/admin/builder/spi-builder-workspace/Mortar/ManagedViews/ManagedViewCommon.swift:29:13: warning: var 'kAssociatedMutablePropertyKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
27 |
28 | private var kAssociatedPropertyKey = 0
29 | private var kAssociatedMutablePropertyKey = 0
   |             |- warning: var 'kAssociatedMutablePropertyKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |             |- note: convert 'kAssociatedMutablePropertyKey' to a 'let' constant to make 'Sendable' shared state immutable
   |             |- note: add '@MainActor' to make var 'kAssociatedMutablePropertyKey' part of global actor 'MainActor'
   |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
30 |
31 | func __AssociatedMutableProperty<T>(_ object: AnyObject, _ type: T.Type, _ initialValue: T, _ created: inout Bool) -> MutableProperty<T> {
[74/82] Compiling Mortar ManagedCollectionViewSection.swift
/Users/admin/builder/spi-builder-workspace/Mortar/ManagedViews/ManagedViewCommon.swift:28:13: warning: var 'kAssociatedPropertyKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
26 | // MARK: Associated Properties
27 |
28 | private var kAssociatedPropertyKey = 0
   |             |- warning: var 'kAssociatedPropertyKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |             |- note: convert 'kAssociatedPropertyKey' to a 'let' constant to make 'Sendable' shared state immutable
   |             |- note: add '@MainActor' to make var 'kAssociatedPropertyKey' part of global actor 'MainActor'
   |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
29 | private var kAssociatedMutablePropertyKey = 0
30 |
/Users/admin/builder/spi-builder-workspace/Mortar/ManagedViews/ManagedViewCommon.swift:29:13: warning: var 'kAssociatedMutablePropertyKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
27 |
28 | private var kAssociatedPropertyKey = 0
29 | private var kAssociatedMutablePropertyKey = 0
   |             |- warning: var 'kAssociatedMutablePropertyKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |             |- note: convert 'kAssociatedMutablePropertyKey' to a 'let' constant to make 'Sendable' shared state immutable
   |             |- note: add '@MainActor' to make var 'kAssociatedMutablePropertyKey' part of global actor 'MainActor'
   |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
30 |
31 | func __AssociatedMutableProperty<T>(_ object: AnyObject, _ type: T.Type, _ initialValue: T, _ created: inout Bool) -> MutableProperty<T> {
[75/82] Compiling Mortar ManagedViewCommon.swift
/Users/admin/builder/spi-builder-workspace/Mortar/ManagedViews/ManagedViewCommon.swift:28:13: warning: var 'kAssociatedPropertyKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
26 | // MARK: Associated Properties
27 |
28 | private var kAssociatedPropertyKey = 0
   |             |- warning: var 'kAssociatedPropertyKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |             |- note: convert 'kAssociatedPropertyKey' to a 'let' constant to make 'Sendable' shared state immutable
   |             |- note: add '@MainActor' to make var 'kAssociatedPropertyKey' part of global actor 'MainActor'
   |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
29 | private var kAssociatedMutablePropertyKey = 0
30 |
/Users/admin/builder/spi-builder-workspace/Mortar/ManagedViews/ManagedViewCommon.swift:29:13: warning: var 'kAssociatedMutablePropertyKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
27 |
28 | private var kAssociatedPropertyKey = 0
29 | private var kAssociatedMutablePropertyKey = 0
   |             |- warning: var 'kAssociatedMutablePropertyKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |             |- note: convert 'kAssociatedMutablePropertyKey' to a 'let' constant to make 'Sendable' shared state immutable
   |             |- note: add '@MainActor' to make var 'kAssociatedMutablePropertyKey' part of global actor 'MainActor'
   |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
30 |
31 | func __AssociatedMutableProperty<T>(_ object: AnyObject, _ type: T.Type, _ initialValue: T, _ created: inout Bool) -> MutableProperty<T> {
[76/82] Compiling Mortar ManagedTableView.swift
/Users/admin/builder/spi-builder-workspace/Mortar/ManagedViews/ManagedViewCommon.swift:28:13: warning: var 'kAssociatedPropertyKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
26 | // MARK: Associated Properties
27 |
28 | private var kAssociatedPropertyKey = 0
   |             |- warning: var 'kAssociatedPropertyKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |             |- note: convert 'kAssociatedPropertyKey' to a 'let' constant to make 'Sendable' shared state immutable
   |             |- note: add '@MainActor' to make var 'kAssociatedPropertyKey' part of global actor 'MainActor'
   |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
29 | private var kAssociatedMutablePropertyKey = 0
30 |
/Users/admin/builder/spi-builder-workspace/Mortar/ManagedViews/ManagedViewCommon.swift:29:13: warning: var 'kAssociatedMutablePropertyKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
27 |
28 | private var kAssociatedPropertyKey = 0
29 | private var kAssociatedMutablePropertyKey = 0
   |             |- warning: var 'kAssociatedMutablePropertyKey' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |             |- note: convert 'kAssociatedMutablePropertyKey' to a 'let' constant to make 'Sendable' shared state immutable
   |             |- note: add '@MainActor' to make var 'kAssociatedMutablePropertyKey' part of global actor 'MainActor'
   |             `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
30 |
31 | func __AssociatedMutableProperty<T>(_ object: AnyObject, _ type: T.Type, _ initialValue: T, _ created: inout Bool) -> MutableProperty<T> {
[77/82] Compiling Mortar ManagedTableViewSection.swift
[78/82] Compiling Mortar StandardTableViewCell.swift
[79/82] Compiling Mortar Mortar.swift
[80/82] Compiling Mortar View+LayoutStack.swift
/Users/admin/builder/spi-builder-workspace/Mortar/View+LayoutStack.swift:7:23: warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'MortarMainThreadLayoutStack' may have shared mutable state; this is an error in the Swift 6 language mode
 4 | //
 5 |
 6 | class MortarMainThreadLayoutStack {
   |       `- note: class 'MortarMainThreadLayoutStack' does not conform to the 'Sendable' protocol
 7 |     public static let shared = MortarMainThreadLayoutStack()
   |                       |- warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'MortarMainThreadLayoutStack' may have shared mutable state; this is an error in the Swift 6 language mode
   |                       |- note: add '@MainActor' to make static property 'shared' part of global actor 'MainActor'
   |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 8 |
 9 |     private var stackDepth: Int = 0
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSView.h:83:1: warning: main actor-isolated initializer 'init(frame:)' cannot be used to satisfy nonisolated requirement from protocol 'MortarFrameInitializable'; this is an error in the Swift 6 language mode
 81 | @interface NSView : NSResponder <NSAnimatablePropertyContainer, NSUserInterfaceItemIdentification, NSDraggingDestination, NSAppearanceCustomization, NSAccessibilityElement, NSAccessibility>
 82 |
 83 | - (instancetype)initWithFrame:(NSRect)frameRect NS_DESIGNATED_INITIALIZER;
    | |- warning: main actor-isolated initializer 'init(frame:)' cannot be used to satisfy nonisolated requirement from protocol 'MortarFrameInitializable'; this is an error in the Swift 6 language mode
    | `- note: add 'nonisolated' to 'init(frame:)' to make this initializer not isolated to the actor
 84 | - (nullable instancetype)initWithCoder:(NSCoder *)coder NS_DESIGNATED_INITIALIZER;
 85 |
/Users/admin/builder/spi-builder-workspace/Mortar/View+ResultBuilder.swift:65:23: note: add '@preconcurrency' to the 'MortarFrameInitializable' conformance to defer isolation checking to run time
 60 |
 61 | public protocol MortarFrameInitializable {
 62 |     init(frame: CGRect)
    |     `- note: mark the protocol requirement 'init(frame:)' 'async' to allow actor-isolated conformances
 63 | }
 64 |
 65 | extension MortarView: MortarFrameInitializable {}
    |                       `- note: add '@preconcurrency' to the 'MortarFrameInitializable' conformance to defer isolation checking to run time
 66 |
 67 | public extension MortarFrameInitializable where Self: MortarView {
/Users/admin/builder/spi-builder-workspace/Mortar/View+ResultBuilder.swift:71:14: warning: call to main actor-isolated initializer 'init(frame:)' in a synchronous nonisolated context; this is an error in the Swift 6 language mode
 69 |     /// - Parameter subviewBoxes: A closure that returns an array of `MortarAddViewBox` instances.
 70 |     init(@MortarAddSubviewsBuilder _ subviewBoxes: () -> [MortarAddViewBox]) {
 71 |         self.init(frame: .zero)
    |              `- warning: call to main actor-isolated initializer 'init(frame:)' in a synchronous nonisolated context; this is an error in the Swift 6 language mode
 72 |         MortarMainThreadLayoutStack.execute {
 73 |             process(subviewBoxes())
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSView.h:83:1: note: calls to initializer 'init(frame:)' from outside of its actor context are implicitly asynchronous
 81 | @interface NSView : NSResponder <NSAnimatablePropertyContainer, NSUserInterfaceItemIdentification, NSDraggingDestination, NSAppearanceCustomization, NSAccessibilityElement, NSAccessibility>
 82 |
 83 | - (instancetype)initWithFrame:(NSRect)frameRect NS_DESIGNATED_INITIALIZER;
    | |- note: calls to initializer 'init(frame:)' from outside of its actor context are implicitly asynchronous
    | `- note: main actor isolation inferred from inheritance from class 'NSResponder'
 84 | - (nullable instancetype)initWithCoder:(NSCoder *)coder NS_DESIGNATED_INITIALIZER;
 85 |
/Users/admin/builder/spi-builder-workspace/Mortar/View+ResultBuilder.swift:73:13: warning: call to main actor-isolated instance method 'process' in a synchronous nonisolated context; this is an error in the Swift 6 language mode
 50 |     /// Processes an array of `MortarAddViewBox` instances and adds their views to the current view.
 51 |     /// - Parameter addViewBoxes: An array of `MortarAddViewBox` instances.
 52 |     func process(_ addViewBoxes: [MortarAddViewBox]) {
    |          |- note: calls to instance method 'process' from outside of its actor context are implicitly asynchronous
    |          `- note: main actor isolation inferred from inheritance from class 'NSResponder'
 53 |         if let stackView = self as? MortarStackView {
 54 |             addViewBoxes.compactMap(\.view).forEach { stackView.addArrangedSubview($0) }
    :
 71 |         self.init(frame: .zero)
 72 |         MortarMainThreadLayoutStack.execute {
 73 |             process(subviewBoxes())
    |             `- warning: call to main actor-isolated instance method 'process' in a synchronous nonisolated context; this is an error in the Swift 6 language mode
 74 |         }
 75 |     }
/Users/admin/builder/spi-builder-workspace/Mortar/View+ResultBuilder.swift:80:14: warning: call to main actor-isolated initializer 'init(frame:)' in a synchronous nonisolated context; this is an error in the Swift 6 language mode
 78 |     /// - Parameter subviewBoxes: A closure that takes the current view and returns an array of `MortarAddViewBox` instances.
 79 |     init(@MortarAddSubviewsBuilder _ subviewBoxes: (Self) -> [MortarAddViewBox]) {
 80 |         self.init(frame: .zero)
    |              `- warning: call to main actor-isolated initializer 'init(frame:)' in a synchronous nonisolated context; this is an error in the Swift 6 language mode
 81 |         MortarMainThreadLayoutStack.execute {
 82 |             process(subviewBoxes(self))
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSView.h:83:1: note: calls to initializer 'init(frame:)' from outside of its actor context are implicitly asynchronous
 81 | @interface NSView : NSResponder <NSAnimatablePropertyContainer, NSUserInterfaceItemIdentification, NSDraggingDestination, NSAppearanceCustomization, NSAccessibilityElement, NSAccessibility>
 82 |
 83 | - (instancetype)initWithFrame:(NSRect)frameRect NS_DESIGNATED_INITIALIZER;
    | |- note: calls to initializer 'init(frame:)' from outside of its actor context are implicitly asynchronous
    | `- note: main actor isolation inferred from inheritance from class 'NSResponder'
 84 | - (nullable instancetype)initWithCoder:(NSCoder *)coder NS_DESIGNATED_INITIALIZER;
 85 |
/Users/admin/builder/spi-builder-workspace/Mortar/View+ResultBuilder.swift:82:13: warning: call to main actor-isolated instance method 'process' in a synchronous nonisolated context; this is an error in the Swift 6 language mode
 50 |     /// Processes an array of `MortarAddViewBox` instances and adds their views to the current view.
 51 |     /// - Parameter addViewBoxes: An array of `MortarAddViewBox` instances.
 52 |     func process(_ addViewBoxes: [MortarAddViewBox]) {
    |          |- note: calls to instance method 'process' from outside of its actor context are implicitly asynchronous
    |          `- note: main actor isolation inferred from inheritance from class 'NSResponder'
 53 |         if let stackView = self as? MortarStackView {
 54 |             addViewBoxes.compactMap(\.view).forEach { stackView.addArrangedSubview($0) }
    :
 80 |         self.init(frame: .zero)
 81 |         MortarMainThreadLayoutStack.execute {
 82 |             process(subviewBoxes(self))
    |             `- warning: call to main actor-isolated instance method 'process' in a synchronous nonisolated context; this is an error in the Swift 6 language mode
 83 |         }
 84 |     }
/Users/admin/builder/spi-builder-workspace/Mortar/View+ResultBuilder.swift:98:13: warning: call to main actor-isolated instance method 'process' in a synchronous nonisolated context; this is an error in the Swift 6 language mode
 50 |     /// Processes an array of `MortarAddViewBox` instances and adds their views to the current view.
 51 |     /// - Parameter addViewBoxes: An array of `MortarAddViewBox` instances.
 52 |     func process(_ addViewBoxes: [MortarAddViewBox]) {
    |          |- note: calls to instance method 'process' from outside of its actor context are implicitly asynchronous
    |          `- note: main actor isolation inferred from inheritance from class 'NSResponder'
 53 |         if let stackView = self as? MortarStackView {
 54 |             addViewBoxes.compactMap(\.view).forEach { stackView.addArrangedSubview($0) }
    :
 96 |     func configure(@MortarAddSubviewsBuilder _ configureBlock: () -> [MortarAddViewBox]) -> Self {
 97 |         MortarMainThreadLayoutStack.execute {
 98 |             process(configureBlock())
    |             `- warning: call to main actor-isolated instance method 'process' in a synchronous nonisolated context; this is an error in the Swift 6 language mode
 99 |         }
100 |         return self
/Users/admin/builder/spi-builder-workspace/Mortar/View+ResultBuilder.swift:109:13: warning: call to main actor-isolated instance method 'process' in a synchronous nonisolated context; this is an error in the Swift 6 language mode
 50 |     /// Processes an array of `MortarAddViewBox` instances and adds their views to the current view.
 51 |     /// - Parameter addViewBoxes: An array of `MortarAddViewBox` instances.
 52 |     func process(_ addViewBoxes: [MortarAddViewBox]) {
    |          |- note: calls to instance method 'process' from outside of its actor context are implicitly asynchronous
    |          `- note: main actor isolation inferred from inheritance from class 'NSResponder'
 53 |         if let stackView = self as? MortarStackView {
 54 |             addViewBoxes.compactMap(\.view).forEach { stackView.addArrangedSubview($0) }
    :
107 |     func configure(@MortarAddSubviewsBuilder _ configureBlock: (Self) -> [MortarAddViewBox]) -> Self {
108 |         MortarMainThreadLayoutStack.execute {
109 |             process(configureBlock(self))
    |             `- warning: call to main actor-isolated instance method 'process' in a synchronous nonisolated context; this is an error in the Swift 6 language mode
110 |         }
111 |         return self
[81/82] Compiling Mortar View+MortarCoordinate.swift
/Users/admin/builder/spi-builder-workspace/Mortar/View+LayoutStack.swift:7:23: warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'MortarMainThreadLayoutStack' may have shared mutable state; this is an error in the Swift 6 language mode
 4 | //
 5 |
 6 | class MortarMainThreadLayoutStack {
   |       `- note: class 'MortarMainThreadLayoutStack' does not conform to the 'Sendable' protocol
 7 |     public static let shared = MortarMainThreadLayoutStack()
   |                       |- warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'MortarMainThreadLayoutStack' may have shared mutable state; this is an error in the Swift 6 language mode
   |                       |- note: add '@MainActor' to make static property 'shared' part of global actor 'MainActor'
   |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 8 |
 9 |     private var stackDepth: Int = 0
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSView.h:83:1: warning: main actor-isolated initializer 'init(frame:)' cannot be used to satisfy nonisolated requirement from protocol 'MortarFrameInitializable'; this is an error in the Swift 6 language mode
 81 | @interface NSView : NSResponder <NSAnimatablePropertyContainer, NSUserInterfaceItemIdentification, NSDraggingDestination, NSAppearanceCustomization, NSAccessibilityElement, NSAccessibility>
 82 |
 83 | - (instancetype)initWithFrame:(NSRect)frameRect NS_DESIGNATED_INITIALIZER;
    | |- warning: main actor-isolated initializer 'init(frame:)' cannot be used to satisfy nonisolated requirement from protocol 'MortarFrameInitializable'; this is an error in the Swift 6 language mode
    | `- note: add 'nonisolated' to 'init(frame:)' to make this initializer not isolated to the actor
 84 | - (nullable instancetype)initWithCoder:(NSCoder *)coder NS_DESIGNATED_INITIALIZER;
 85 |
/Users/admin/builder/spi-builder-workspace/Mortar/View+ResultBuilder.swift:65:23: note: add '@preconcurrency' to the 'MortarFrameInitializable' conformance to defer isolation checking to run time
 60 |
 61 | public protocol MortarFrameInitializable {
 62 |     init(frame: CGRect)
    |     `- note: mark the protocol requirement 'init(frame:)' 'async' to allow actor-isolated conformances
 63 | }
 64 |
 65 | extension MortarView: MortarFrameInitializable {}
    |                       `- note: add '@preconcurrency' to the 'MortarFrameInitializable' conformance to defer isolation checking to run time
 66 |
 67 | public extension MortarFrameInitializable where Self: MortarView {
/Users/admin/builder/spi-builder-workspace/Mortar/View+ResultBuilder.swift:71:14: warning: call to main actor-isolated initializer 'init(frame:)' in a synchronous nonisolated context; this is an error in the Swift 6 language mode
 69 |     /// - Parameter subviewBoxes: A closure that returns an array of `MortarAddViewBox` instances.
 70 |     init(@MortarAddSubviewsBuilder _ subviewBoxes: () -> [MortarAddViewBox]) {
 71 |         self.init(frame: .zero)
    |              `- warning: call to main actor-isolated initializer 'init(frame:)' in a synchronous nonisolated context; this is an error in the Swift 6 language mode
 72 |         MortarMainThreadLayoutStack.execute {
 73 |             process(subviewBoxes())
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSView.h:83:1: note: calls to initializer 'init(frame:)' from outside of its actor context are implicitly asynchronous
 81 | @interface NSView : NSResponder <NSAnimatablePropertyContainer, NSUserInterfaceItemIdentification, NSDraggingDestination, NSAppearanceCustomization, NSAccessibilityElement, NSAccessibility>
 82 |
 83 | - (instancetype)initWithFrame:(NSRect)frameRect NS_DESIGNATED_INITIALIZER;
    | |- note: calls to initializer 'init(frame:)' from outside of its actor context are implicitly asynchronous
    | `- note: main actor isolation inferred from inheritance from class 'NSResponder'
 84 | - (nullable instancetype)initWithCoder:(NSCoder *)coder NS_DESIGNATED_INITIALIZER;
 85 |
/Users/admin/builder/spi-builder-workspace/Mortar/View+ResultBuilder.swift:73:13: warning: call to main actor-isolated instance method 'process' in a synchronous nonisolated context; this is an error in the Swift 6 language mode
 50 |     /// Processes an array of `MortarAddViewBox` instances and adds their views to the current view.
 51 |     /// - Parameter addViewBoxes: An array of `MortarAddViewBox` instances.
 52 |     func process(_ addViewBoxes: [MortarAddViewBox]) {
    |          |- note: calls to instance method 'process' from outside of its actor context are implicitly asynchronous
    |          `- note: main actor isolation inferred from inheritance from class 'NSResponder'
 53 |         if let stackView = self as? MortarStackView {
 54 |             addViewBoxes.compactMap(\.view).forEach { stackView.addArrangedSubview($0) }
    :
 71 |         self.init(frame: .zero)
 72 |         MortarMainThreadLayoutStack.execute {
 73 |             process(subviewBoxes())
    |             `- warning: call to main actor-isolated instance method 'process' in a synchronous nonisolated context; this is an error in the Swift 6 language mode
 74 |         }
 75 |     }
/Users/admin/builder/spi-builder-workspace/Mortar/View+ResultBuilder.swift:80:14: warning: call to main actor-isolated initializer 'init(frame:)' in a synchronous nonisolated context; this is an error in the Swift 6 language mode
 78 |     /// - Parameter subviewBoxes: A closure that takes the current view and returns an array of `MortarAddViewBox` instances.
 79 |     init(@MortarAddSubviewsBuilder _ subviewBoxes: (Self) -> [MortarAddViewBox]) {
 80 |         self.init(frame: .zero)
    |              `- warning: call to main actor-isolated initializer 'init(frame:)' in a synchronous nonisolated context; this is an error in the Swift 6 language mode
 81 |         MortarMainThreadLayoutStack.execute {
 82 |             process(subviewBoxes(self))
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSView.h:83:1: note: calls to initializer 'init(frame:)' from outside of its actor context are implicitly asynchronous
 81 | @interface NSView : NSResponder <NSAnimatablePropertyContainer, NSUserInterfaceItemIdentification, NSDraggingDestination, NSAppearanceCustomization, NSAccessibilityElement, NSAccessibility>
 82 |
 83 | - (instancetype)initWithFrame:(NSRect)frameRect NS_DESIGNATED_INITIALIZER;
    | |- note: calls to initializer 'init(frame:)' from outside of its actor context are implicitly asynchronous
    | `- note: main actor isolation inferred from inheritance from class 'NSResponder'
 84 | - (nullable instancetype)initWithCoder:(NSCoder *)coder NS_DESIGNATED_INITIALIZER;
 85 |
/Users/admin/builder/spi-builder-workspace/Mortar/View+ResultBuilder.swift:82:13: warning: call to main actor-isolated instance method 'process' in a synchronous nonisolated context; this is an error in the Swift 6 language mode
 50 |     /// Processes an array of `MortarAddViewBox` instances and adds their views to the current view.
 51 |     /// - Parameter addViewBoxes: An array of `MortarAddViewBox` instances.
 52 |     func process(_ addViewBoxes: [MortarAddViewBox]) {
    |          |- note: calls to instance method 'process' from outside of its actor context are implicitly asynchronous
    |          `- note: main actor isolation inferred from inheritance from class 'NSResponder'
 53 |         if let stackView = self as? MortarStackView {
 54 |             addViewBoxes.compactMap(\.view).forEach { stackView.addArrangedSubview($0) }
    :
 80 |         self.init(frame: .zero)
 81 |         MortarMainThreadLayoutStack.execute {
 82 |             process(subviewBoxes(self))
    |             `- warning: call to main actor-isolated instance method 'process' in a synchronous nonisolated context; this is an error in the Swift 6 language mode
 83 |         }
 84 |     }
/Users/admin/builder/spi-builder-workspace/Mortar/View+ResultBuilder.swift:98:13: warning: call to main actor-isolated instance method 'process' in a synchronous nonisolated context; this is an error in the Swift 6 language mode
 50 |     /// Processes an array of `MortarAddViewBox` instances and adds their views to the current view.
 51 |     /// - Parameter addViewBoxes: An array of `MortarAddViewBox` instances.
 52 |     func process(_ addViewBoxes: [MortarAddViewBox]) {
    |          |- note: calls to instance method 'process' from outside of its actor context are implicitly asynchronous
    |          `- note: main actor isolation inferred from inheritance from class 'NSResponder'
 53 |         if let stackView = self as? MortarStackView {
 54 |             addViewBoxes.compactMap(\.view).forEach { stackView.addArrangedSubview($0) }
    :
 96 |     func configure(@MortarAddSubviewsBuilder _ configureBlock: () -> [MortarAddViewBox]) -> Self {
 97 |         MortarMainThreadLayoutStack.execute {
 98 |             process(configureBlock())
    |             `- warning: call to main actor-isolated instance method 'process' in a synchronous nonisolated context; this is an error in the Swift 6 language mode
 99 |         }
100 |         return self
/Users/admin/builder/spi-builder-workspace/Mortar/View+ResultBuilder.swift:109:13: warning: call to main actor-isolated instance method 'process' in a synchronous nonisolated context; this is an error in the Swift 6 language mode
 50 |     /// Processes an array of `MortarAddViewBox` instances and adds their views to the current view.
 51 |     /// - Parameter addViewBoxes: An array of `MortarAddViewBox` instances.
 52 |     func process(_ addViewBoxes: [MortarAddViewBox]) {
    |          |- note: calls to instance method 'process' from outside of its actor context are implicitly asynchronous
    |          `- note: main actor isolation inferred from inheritance from class 'NSResponder'
 53 |         if let stackView = self as? MortarStackView {
 54 |             addViewBoxes.compactMap(\.view).forEach { stackView.addArrangedSubview($0) }
    :
107 |     func configure(@MortarAddSubviewsBuilder _ configureBlock: (Self) -> [MortarAddViewBox]) -> Self {
108 |         MortarMainThreadLayoutStack.execute {
109 |             process(configureBlock(self))
    |             `- warning: call to main actor-isolated instance method 'process' in a synchronous nonisolated context; this is an error in the Swift 6 language mode
110 |         }
111 |         return self
[82/82] Compiling Mortar View+ResultBuilder.swift
/Users/admin/builder/spi-builder-workspace/Mortar/View+LayoutStack.swift:7:23: warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'MortarMainThreadLayoutStack' may have shared mutable state; this is an error in the Swift 6 language mode
 4 | //
 5 |
 6 | class MortarMainThreadLayoutStack {
   |       `- note: class 'MortarMainThreadLayoutStack' does not conform to the 'Sendable' protocol
 7 |     public static let shared = MortarMainThreadLayoutStack()
   |                       |- warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'MortarMainThreadLayoutStack' may have shared mutable state; this is an error in the Swift 6 language mode
   |                       |- note: add '@MainActor' to make static property 'shared' part of global actor 'MainActor'
   |                       `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 8 |
 9 |     private var stackDepth: Int = 0
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSView.h:83:1: warning: main actor-isolated initializer 'init(frame:)' cannot be used to satisfy nonisolated requirement from protocol 'MortarFrameInitializable'; this is an error in the Swift 6 language mode
 81 | @interface NSView : NSResponder <NSAnimatablePropertyContainer, NSUserInterfaceItemIdentification, NSDraggingDestination, NSAppearanceCustomization, NSAccessibilityElement, NSAccessibility>
 82 |
 83 | - (instancetype)initWithFrame:(NSRect)frameRect NS_DESIGNATED_INITIALIZER;
    | |- warning: main actor-isolated initializer 'init(frame:)' cannot be used to satisfy nonisolated requirement from protocol 'MortarFrameInitializable'; this is an error in the Swift 6 language mode
    | `- note: add 'nonisolated' to 'init(frame:)' to make this initializer not isolated to the actor
 84 | - (nullable instancetype)initWithCoder:(NSCoder *)coder NS_DESIGNATED_INITIALIZER;
 85 |
/Users/admin/builder/spi-builder-workspace/Mortar/View+ResultBuilder.swift:65:23: note: add '@preconcurrency' to the 'MortarFrameInitializable' conformance to defer isolation checking to run time
 60 |
 61 | public protocol MortarFrameInitializable {
 62 |     init(frame: CGRect)
    |     `- note: mark the protocol requirement 'init(frame:)' 'async' to allow actor-isolated conformances
 63 | }
 64 |
 65 | extension MortarView: MortarFrameInitializable {}
    |                       `- note: add '@preconcurrency' to the 'MortarFrameInitializable' conformance to defer isolation checking to run time
 66 |
 67 | public extension MortarFrameInitializable where Self: MortarView {
/Users/admin/builder/spi-builder-workspace/Mortar/View+ResultBuilder.swift:71:14: warning: call to main actor-isolated initializer 'init(frame:)' in a synchronous nonisolated context; this is an error in the Swift 6 language mode
 69 |     /// - Parameter subviewBoxes: A closure that returns an array of `MortarAddViewBox` instances.
 70 |     init(@MortarAddSubviewsBuilder _ subviewBoxes: () -> [MortarAddViewBox]) {
 71 |         self.init(frame: .zero)
    |              `- warning: call to main actor-isolated initializer 'init(frame:)' in a synchronous nonisolated context; this is an error in the Swift 6 language mode
 72 |         MortarMainThreadLayoutStack.execute {
 73 |             process(subviewBoxes())
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSView.h:83:1: note: calls to initializer 'init(frame:)' from outside of its actor context are implicitly asynchronous
 81 | @interface NSView : NSResponder <NSAnimatablePropertyContainer, NSUserInterfaceItemIdentification, NSDraggingDestination, NSAppearanceCustomization, NSAccessibilityElement, NSAccessibility>
 82 |
 83 | - (instancetype)initWithFrame:(NSRect)frameRect NS_DESIGNATED_INITIALIZER;
    | |- note: calls to initializer 'init(frame:)' from outside of its actor context are implicitly asynchronous
    | `- note: main actor isolation inferred from inheritance from class 'NSResponder'
 84 | - (nullable instancetype)initWithCoder:(NSCoder *)coder NS_DESIGNATED_INITIALIZER;
 85 |
/Users/admin/builder/spi-builder-workspace/Mortar/View+ResultBuilder.swift:73:13: warning: call to main actor-isolated instance method 'process' in a synchronous nonisolated context; this is an error in the Swift 6 language mode
 50 |     /// Processes an array of `MortarAddViewBox` instances and adds their views to the current view.
 51 |     /// - Parameter addViewBoxes: An array of `MortarAddViewBox` instances.
 52 |     func process(_ addViewBoxes: [MortarAddViewBox]) {
    |          |- note: calls to instance method 'process' from outside of its actor context are implicitly asynchronous
    |          `- note: main actor isolation inferred from inheritance from class 'NSResponder'
 53 |         if let stackView = self as? MortarStackView {
 54 |             addViewBoxes.compactMap(\.view).forEach { stackView.addArrangedSubview($0) }
    :
 71 |         self.init(frame: .zero)
 72 |         MortarMainThreadLayoutStack.execute {
 73 |             process(subviewBoxes())
    |             `- warning: call to main actor-isolated instance method 'process' in a synchronous nonisolated context; this is an error in the Swift 6 language mode
 74 |         }
 75 |     }
/Users/admin/builder/spi-builder-workspace/Mortar/View+ResultBuilder.swift:80:14: warning: call to main actor-isolated initializer 'init(frame:)' in a synchronous nonisolated context; this is an error in the Swift 6 language mode
 78 |     /// - Parameter subviewBoxes: A closure that takes the current view and returns an array of `MortarAddViewBox` instances.
 79 |     init(@MortarAddSubviewsBuilder _ subviewBoxes: (Self) -> [MortarAddViewBox]) {
 80 |         self.init(frame: .zero)
    |              `- warning: call to main actor-isolated initializer 'init(frame:)' in a synchronous nonisolated context; this is an error in the Swift 6 language mode
 81 |         MortarMainThreadLayoutStack.execute {
 82 |             process(subviewBoxes(self))
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSView.h:83:1: note: calls to initializer 'init(frame:)' from outside of its actor context are implicitly asynchronous
 81 | @interface NSView : NSResponder <NSAnimatablePropertyContainer, NSUserInterfaceItemIdentification, NSDraggingDestination, NSAppearanceCustomization, NSAccessibilityElement, NSAccessibility>
 82 |
 83 | - (instancetype)initWithFrame:(NSRect)frameRect NS_DESIGNATED_INITIALIZER;
    | |- note: calls to initializer 'init(frame:)' from outside of its actor context are implicitly asynchronous
    | `- note: main actor isolation inferred from inheritance from class 'NSResponder'
 84 | - (nullable instancetype)initWithCoder:(NSCoder *)coder NS_DESIGNATED_INITIALIZER;
 85 |
/Users/admin/builder/spi-builder-workspace/Mortar/View+ResultBuilder.swift:82:13: warning: call to main actor-isolated instance method 'process' in a synchronous nonisolated context; this is an error in the Swift 6 language mode
 50 |     /// Processes an array of `MortarAddViewBox` instances and adds their views to the current view.
 51 |     /// - Parameter addViewBoxes: An array of `MortarAddViewBox` instances.
 52 |     func process(_ addViewBoxes: [MortarAddViewBox]) {
    |          |- note: calls to instance method 'process' from outside of its actor context are implicitly asynchronous
    |          `- note: main actor isolation inferred from inheritance from class 'NSResponder'
 53 |         if let stackView = self as? MortarStackView {
 54 |             addViewBoxes.compactMap(\.view).forEach { stackView.addArrangedSubview($0) }
    :
 80 |         self.init(frame: .zero)
 81 |         MortarMainThreadLayoutStack.execute {
 82 |             process(subviewBoxes(self))
    |             `- warning: call to main actor-isolated instance method 'process' in a synchronous nonisolated context; this is an error in the Swift 6 language mode
 83 |         }
 84 |     }
/Users/admin/builder/spi-builder-workspace/Mortar/View+ResultBuilder.swift:98:13: warning: call to main actor-isolated instance method 'process' in a synchronous nonisolated context; this is an error in the Swift 6 language mode
 50 |     /// Processes an array of `MortarAddViewBox` instances and adds their views to the current view.
 51 |     /// - Parameter addViewBoxes: An array of `MortarAddViewBox` instances.
 52 |     func process(_ addViewBoxes: [MortarAddViewBox]) {
    |          |- note: calls to instance method 'process' from outside of its actor context are implicitly asynchronous
    |          `- note: main actor isolation inferred from inheritance from class 'NSResponder'
 53 |         if let stackView = self as? MortarStackView {
 54 |             addViewBoxes.compactMap(\.view).forEach { stackView.addArrangedSubview($0) }
    :
 96 |     func configure(@MortarAddSubviewsBuilder _ configureBlock: () -> [MortarAddViewBox]) -> Self {
 97 |         MortarMainThreadLayoutStack.execute {
 98 |             process(configureBlock())
    |             `- warning: call to main actor-isolated instance method 'process' in a synchronous nonisolated context; this is an error in the Swift 6 language mode
 99 |         }
100 |         return self
/Users/admin/builder/spi-builder-workspace/Mortar/View+ResultBuilder.swift:109:13: warning: call to main actor-isolated instance method 'process' in a synchronous nonisolated context; this is an error in the Swift 6 language mode
 50 |     /// Processes an array of `MortarAddViewBox` instances and adds their views to the current view.
 51 |     /// - Parameter addViewBoxes: An array of `MortarAddViewBox` instances.
 52 |     func process(_ addViewBoxes: [MortarAddViewBox]) {
    |          |- note: calls to instance method 'process' from outside of its actor context are implicitly asynchronous
    |          `- note: main actor isolation inferred from inheritance from class 'NSResponder'
 53 |         if let stackView = self as? MortarStackView {
 54 |             addViewBoxes.compactMap(\.view).forEach { stackView.addArrangedSubview($0) }
    :
107 |     func configure(@MortarAddSubviewsBuilder _ configureBlock: (Self) -> [MortarAddViewBox]) -> Self {
108 |         MortarMainThreadLayoutStack.execute {
109 |             process(configureBlock(self))
    |             `- warning: call to main actor-isolated instance method 'process' in a synchronous nonisolated context; this is an error in the Swift 6 language mode
110 |         }
111 |         return self
Build complete! (14.32s)
Fetching https://github.com/jmfieldman/CombineEx.git
[1/1292] Fetching combineex
Fetched https://github.com/jmfieldman/CombineEx.git from cache (0.79s)
Computing version for https://github.com/jmfieldman/CombineEx.git
Computed https://github.com/jmfieldman/CombineEx.git at 0.0.75 (1.32s)
Creating working copy for https://github.com/jmfieldman/CombineEx.git
Working copy of https://github.com/jmfieldman/CombineEx.git resolved at 0.0.75
Build complete.
{
  "dependencies" : [
    {
      "identity" : "combineex",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "0.0.46",
            "upper_bound" : "1.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/jmfieldman/CombineEx.git"
    }
  ],
  "manifest_display_name" : "Mortar",
  "name" : "Mortar",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "17.0"
    },
    {
      "name" : "macos",
      "version" : "14.0"
    },
    {
      "name" : "tvos",
      "version" : "17.0"
    }
  ],
  "products" : [
    {
      "name" : "Mortar",
      "targets" : [
        "Mortar"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "MortarTests",
      "module_type" : "SwiftTarget",
      "name" : "MortarTests",
      "path" : "MortarTests",
      "sources" : [
        "MortarLayoutTests.swift",
        "TestUtilities.swift"
      ],
      "target_dependencies" : [
        "Mortar"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Mortar",
      "module_type" : "SwiftTarget",
      "name" : "Mortar",
      "path" : "Mortar",
      "product_dependencies" : [
        "CombineEx"
      ],
      "product_memberships" : [
        "Mortar"
      ],
      "sources" : [
        "Exports.swift",
        "LayoutGuide+MortarCoordinate.swift",
        "ManagedViews/CollectionView/ManagedCollectionView.swift",
        "ManagedViews/CollectionView/ManagedCollectionViewCell.swift",
        "ManagedViews/CollectionView/ManagedCollectionViewHeaderFooterView.swift",
        "ManagedViews/CollectionView/ManagedCollectionViewSection.swift",
        "ManagedViews/ManagedViewCommon.swift",
        "ManagedViews/TableView/ManagedTableView.swift",
        "ManagedViews/TableView/ManagedTableViewCell.swift",
        "ManagedViews/TableView/ManagedTableViewDelegation.swift",
        "ManagedViews/TableView/ManagedTableViewHeaderFooterView.swift",
        "ManagedViews/TableView/ManagedTableViewSection.swift",
        "ManagedViews/TableView/StandardCells/StandardTableViewCell.swift",
        "Mortar.swift",
        "MortarAnchorProvider.swift",
        "MortarAxisPriorities.swift",
        "MortarCGFloatable.swift",
        "MortarConstraint.swift",
        "MortarConstraintGroup.swift",
        "MortarCoordinate.swift",
        "MortarError.swift",
        "MortarGestureRecognizer.swift",
        "MortarObjectAttachments.swift",
        "MortarReactive.swift",
        "MortarScrollView.swift",
        "MortarStyle.swift",
        "MortarTextDelegation.swift",
        "MortarViewAliases.swift",
        "Operators.swift",
        "View+LayoutStack.swift",
        "View+MortarCoordinate.swift",
        "View+ResultBuilder.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.9"
}
Done.