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Build Information

Successful build of swift-prelude, reference main (a21df6), with Swift 6.3 for macOS (SPM) on 12 Apr 2026 12:44:35 UTC.

Swift 6 data race errors: 0

Build Command

env DEVELOPER_DIR=/Applications/Xcode-26.4.0.app xcrun swift build --arch arm64

Build Log

========================================
RunAll
========================================
Builder version: 4.70.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/pointfreeco/swift-prelude.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/pointfreeco/swift-prelude
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at a21df6f Add `.editorconfig` for consistent code formatting (#174)
Cloned https://github.com/pointfreeco/swift-prelude.git
Revision (git rev-parse @):
a21df6f5932673f3f20d7f0ca1f8e0a7c887b3c2
SUCCESS checkout https://github.com/pointfreeco/swift-prelude.git at main
Fetching https://github.com/pointfreeco/swift-clocks
Fetching https://github.com/pointfreeco/swift-concurrency-extras
Fetching https://github.com/pointfreeco/xctest-dynamic-overlay
Fetching https://github.com/pointfreeco/combine-schedulers
Fetching https://github.com/pointfreeco/swift-dependencies
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[578/10565] Fetching swift-clocks, combine-schedulers, swift-concurrency-extras, xctest-dynamic-overlay
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Computing version for https://github.com/pointfreeco/swift-dependencies
Computed https://github.com/pointfreeco/swift-dependencies at 1.0.0 (2.27s)
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Computed https://github.com/pointfreeco/xctest-dynamic-overlay at 1.0.2 (0.68s)
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Computed https://github.com/pointfreeco/swift-concurrency-extras at 1.0.0 (0.67s)
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Computed https://github.com/pointfreeco/swift-clocks at 1.0.0 (0.68s)
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Computed https://github.com/pointfreeco/combine-schedulers at 1.0.0 (0.77s)
Creating working copy for https://github.com/pointfreeco/swift-concurrency-extras
Working copy of https://github.com/pointfreeco/swift-concurrency-extras resolved at 1.0.0
Creating working copy for https://github.com/pointfreeco/swift-dependencies
Working copy of https://github.com/pointfreeco/swift-dependencies resolved at 1.0.0
Creating working copy for https://github.com/pointfreeco/swift-clocks
Working copy of https://github.com/pointfreeco/swift-clocks resolved at 1.0.0
Creating working copy for https://github.com/pointfreeco/combine-schedulers
Working copy of https://github.com/pointfreeco/combine-schedulers resolved at 1.0.0
Creating working copy for https://github.com/pointfreeco/xctest-dynamic-overlay
Working copy of https://github.com/pointfreeco/xctest-dynamic-overlay resolved at 1.0.2
========================================
ResolveProductDependencies
========================================
Resolving dependencies ...
{
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  "url": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies",
  "version": "unspecified",
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              "dependencies": [
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  ]
}
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Computing version for https://github.com/pointfreeco/swift-clocks
Computed https://github.com/pointfreeco/swift-clocks at 1.0.6 (5.35s)
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Creating working copy for https://github.com/pointfreeco/swift-concurrency-extras
Working copy of https://github.com/pointfreeco/swift-concurrency-extras resolved at 1.3.2
Creating working copy for https://github.com/pointfreeco/swift-prelude.git
Working copy of https://github.com/pointfreeco/swift-prelude.git resolved at main (a21df6f)
Creating working copy for https://github.com/pointfreeco/xctest-dynamic-overlay
Working copy of https://github.com/pointfreeco/xctest-dynamic-overlay resolved at 1.9.0
Creating working copy for https://github.com/pointfreeco/combine-schedulers
Working copy of https://github.com/pointfreeco/combine-schedulers resolved at 1.1.0
Creating working copy for https://github.com/swiftlang/swift-syntax
Working copy of https://github.com/swiftlang/swift-syntax resolved at 603.0.0
Creating working copy for https://github.com/pointfreeco/swift-clocks
Working copy of https://github.com/pointfreeco/swift-clocks resolved at 1.0.6
Creating working copy for https://github.com/pointfreeco/swift-dependencies
Working copy of https://github.com/pointfreeco/swift-dependencies resolved at 1.12.0
Downloading package prebuilt https://download.swift.org/prebuilts/swift-syntax/603.0.0/swiftlang-6.3.0.123.5-macosx26.4-MacroSupport.zip
Downloaded https://download.swift.org/prebuilts/swift-syntax/603.0.0/swiftlang-6.3.0.123.5-macosx26.4-MacroSupport.zip (0.34s)
warning: '.resolve-product-dependencies': dependency 'swift-prelude' is not used by any target
Found 1 product dependencies
  - swift-dependencies
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.3
Building package at path:  $PWD
https://github.com/pointfreeco/swift-prelude.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-26.4.0.app xcrun swift build --arch arm64
Building for debugging...
[0/16] Write sources
[15/16] Write swift-version--6988338F2F200930.txt
[17/33] Compiling XCTestDynamicOverlay Unimplemented.swift
[18/33] Compiling XCTestDynamicOverlay XCTIsTesting.swift
[19/33] Compiling XCTestDynamicOverlay XCTCurrentTestCase.swift
[20/33] Compiling XCTestDynamicOverlay GeneratePlaceholder.swift
[21/33] Compiling XCTestDynamicOverlay RuntimeWarnings.swift
[22/33] Compiling XCTestDynamicOverlay DefaultInitializable.swift
[23/33] Emitting module XCTestDynamicOverlay
[24/33] Compiling XCTestDynamicOverlay Deprecations.swift
[25/33] Compiling XCTestDynamicOverlay XCTFail.swift
[26/33] Compiling ConcurrencyExtras LockIsolated.swift
[27/33] Compiling ConcurrencyExtras MainSerialExecutor.swift
[28/33] Emitting module ConcurrencyExtras
[29/33] Compiling ConcurrencyExtras AsyncThrowingStream.swift
[30/33] Compiling ConcurrencyExtras Task.swift
[31/33] Compiling ConcurrencyExtras UncheckedSendable.swift
[32/33] Compiling ConcurrencyExtras AsyncStream.swift
[33/33] Compiling ConcurrencyExtras ActorIsolated.swift
[34/55] Compiling CombineSchedulers UIScheduler.swift
[35/55] Compiling CombineSchedulers Timer.swift
[36/55] Compiling CombineSchedulers UIKit.swift
[37/56] Emitting module CombineSchedulers
[38/56] Compiling Clocks Timer.swift
[39/56] Compiling Clocks TestClock.swift
[40/56] Compiling Clocks UnimplementedClock.swift
[41/56] Compiling CombineSchedulers TestScheduler.swift
[42/56] Compiling CombineSchedulers UnimplementedScheduler.swift
[43/56] Compiling Clocks Shims.swift
[44/56] Compiling Clocks ImmediateClock.swift
[45/56] Compiling Clocks Lock.swift
[46/56] Compiling Clocks _AsyncTimerSequence.swift
[47/56] Compiling Clocks SwiftUI.swift
[48/56] Emitting module Clocks
[49/56] Compiling Clocks AnyClock.swift
[50/56] Compiling CombineSchedulers NSRecursiveLock.swift
[51/56] Compiling CombineSchedulers Lock.swift
[52/56] Compiling CombineSchedulers AnyScheduler.swift
[53/56] Compiling CombineSchedulers Concurrency.swift
[54/56] Compiling CombineSchedulers ImmediateScheduler.swift
[55/56] Compiling CombineSchedulers Deprecations.swift
[56/56] Compiling CombineSchedulers SwiftUI.swift
[57/78] Compiling Dependencies Dependency.swift
[58/78] Compiling Dependencies DependencyContext.swift
[59/78] Compiling Dependencies DependencyKey.swift
[60/78] Compiling Dependencies MainRunLoop.swift
[61/78] Compiling Dependencies OpenURL.swift
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[63/80] Compiling Dependencies RuntimeWarnings.swift
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[66/80] Compiling Dependencies Context.swift
[67/80] Compiling Dependencies Date.swift
[68/80] Compiling Dependencies FireAndForget.swift
[69/80] Compiling Dependencies Locale.swift
[70/80] Compiling Dependencies MainQueue.swift
[71/80] Emitting module Dependencies
[72/80] Compiling Dependencies UUID.swift
[73/80] Compiling Dependencies WithRandomNumberGenerator.swift
[74/80] Compiling Dependencies DependencyValues.swift
[75/80] Compiling Dependencies Calendar.swift
[76/80] Compiling Dependencies Clocks.swift
[77/80] Compiling Dependencies TimeZone.swift
[78/80] Compiling Dependencies URLSession.swift
[79/80] Compiling Dependencies TypeName.swift
[80/80] Compiling Dependencies WithDependencies.swift
[81/114] Emitting module Prelude
/Users/admin/builder/spi-builder-workspace/Sources/Prelude/Comparable.swift:17:1: warning: extension declares a conformance of imported type 'Bool' to imported protocol 'Comparable'; this will not behave correctly if the owners of 'Swift' introduce this conformance in the future
15 | }
16 |
17 | extension Bool: Comparable {
   | |- warning: extension declares a conformance of imported type 'Bool' to imported protocol 'Comparable'; this will not behave correctly if the owners of 'Swift' introduce this conformance in the future
   | `- note: add '@retroactive' to silence this warning
18 |   public static func < (lhs: Bool, rhs: Bool) -> Bool {
19 |     return (lhs, rhs) == (false, true)
/Users/admin/builder/spi-builder-workspace/Sources/Prelude/Func.swift:39:28: warning: generic parameter 'A' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
  1 |
  2 | public struct Func<A, B> {
    |                    `- note: 'A' previously declared here
  3 |   public let call: (A) -> B
  4 |
    :
 37 |   }
 38 |
 39 |   public static func >¢< <A, B, C>(f: @escaping (B) -> A, g: Func<A, C>) -> Func<B, C> {
    |                           `- warning: generic parameter 'A' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
 40 |     return g.contramap(f)
 41 |   }
/Users/admin/builder/spi-builder-workspace/Sources/Prelude/Func.swift:39:31: warning: generic parameter 'B' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
  1 |
  2 | public struct Func<A, B> {
    |                       `- note: 'B' previously declared here
  3 |   public let call: (A) -> B
  4 |
    :
 37 |   }
 38 |
 39 |   public static func >¢< <A, B, C>(f: @escaping (B) -> A, g: Func<A, C>) -> Func<B, C> {
    |                              `- warning: generic parameter 'B' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
 40 |     return g.contramap(f)
 41 |   }
[82/117] Compiling Prelude NearSemiring.swift
[83/117] Compiling Prelude Never.swift
[84/117] Compiling Prelude Operators.swift
[85/117] Compiling Prelude Optional.swift
[86/117] Compiling Prelude Equatable.swift
[87/117] Compiling Prelude EuclideanRing.swift
[88/117] Compiling Prelude Field.swift
[89/117] Compiling Prelude Filterable.swift
[90/117] Compiling Prelude Alt.swift
[91/117] Compiling Prelude Array.swift
[92/117] Compiling Prelude Collection.swift
[93/117] Compiling Prelude CommutativeRing.swift
[94/117] Compiling Prelude Parallel.swift
[95/117] Compiling Prelude Plus.swift
[96/117] Compiling Prelude PrecedenceGroups.swift
[97/117] Compiling Prelude Sequence.swift
[98/117] Compiling Prelude Set.swift
[99/117] Compiling Prelude String.swift
[100/117] Compiling Prelude Ring.swift
[101/117] Compiling Prelude Semigroup.swift
[102/117] Compiling Prelude Semiring.swift
[103/117] Compiling Prelude Hole.swift
[104/117] Compiling Prelude IO.swift
[105/117] Compiling Prelude KeyPath.swift
[106/117] Compiling Prelude Monoid.swift
[107/117] Compiling Prelude Strong.swift
[108/117] Compiling Prelude Tuple.swift
[109/117] Compiling Prelude Unit.swift
[110/117] Compiling Prelude FreeNearSemiring.swift
/Users/admin/builder/spi-builder-workspace/Sources/Prelude/Func.swift:39:28: warning: generic parameter 'A' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
  1 |
  2 | public struct Func<A, B> {
    |                    `- note: 'A' previously declared here
  3 |   public let call: (A) -> B
  4 |
    :
 37 |   }
 38 |
 39 |   public static func >¢< <A, B, C>(f: @escaping (B) -> A, g: Func<A, C>) -> Func<B, C> {
    |                           `- warning: generic parameter 'A' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
 40 |     return g.contramap(f)
 41 |   }
/Users/admin/builder/spi-builder-workspace/Sources/Prelude/Func.swift:39:31: warning: generic parameter 'B' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
  1 |
  2 | public struct Func<A, B> {
    |                       `- note: 'B' previously declared here
  3 |   public let call: (A) -> B
  4 |
    :
 37 |   }
 38 |
 39 |   public static func >¢< <A, B, C>(f: @escaping (B) -> A, g: Func<A, C>) -> Func<B, C> {
    |                              `- warning: generic parameter 'B' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
 40 |     return g.contramap(f)
 41 |   }
[111/117] Compiling Prelude Func.swift
/Users/admin/builder/spi-builder-workspace/Sources/Prelude/Func.swift:39:28: warning: generic parameter 'A' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
  1 |
  2 | public struct Func<A, B> {
    |                    `- note: 'A' previously declared here
  3 |   public let call: (A) -> B
  4 |
    :
 37 |   }
 38 |
 39 |   public static func >¢< <A, B, C>(f: @escaping (B) -> A, g: Func<A, C>) -> Func<B, C> {
    |                           `- warning: generic parameter 'A' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
 40 |     return g.contramap(f)
 41 |   }
/Users/admin/builder/spi-builder-workspace/Sources/Prelude/Func.swift:39:31: warning: generic parameter 'B' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
  1 |
  2 | public struct Func<A, B> {
    |                       `- note: 'B' previously declared here
  3 |   public let call: (A) -> B
  4 |
    :
 37 |   }
 38 |
 39 |   public static func >¢< <A, B, C>(f: @escaping (B) -> A, g: Func<A, C>) -> Func<B, C> {
    |                              `- warning: generic parameter 'B' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
 40 |     return g.contramap(f)
 41 |   }
[112/117] Compiling Prelude Function.swift
/Users/admin/builder/spi-builder-workspace/Sources/Prelude/Func.swift:39:28: warning: generic parameter 'A' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
  1 |
  2 | public struct Func<A, B> {
    |                    `- note: 'A' previously declared here
  3 |   public let call: (A) -> B
  4 |
    :
 37 |   }
 38 |
 39 |   public static func >¢< <A, B, C>(f: @escaping (B) -> A, g: Func<A, C>) -> Func<B, C> {
    |                           `- warning: generic parameter 'A' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
 40 |     return g.contramap(f)
 41 |   }
/Users/admin/builder/spi-builder-workspace/Sources/Prelude/Func.swift:39:31: warning: generic parameter 'B' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
  1 |
  2 | public struct Func<A, B> {
    |                       `- note: 'B' previously declared here
  3 |   public let call: (A) -> B
  4 |
    :
 37 |   }
 38 |
 39 |   public static func >¢< <A, B, C>(f: @escaping (B) -> A, g: Func<A, C>) -> Func<B, C> {
    |                              `- warning: generic parameter 'B' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
 40 |     return g.contramap(f)
 41 |   }
[113/117] Compiling Prelude HeytingAlgebra.swift
/Users/admin/builder/spi-builder-workspace/Sources/Prelude/Func.swift:39:28: warning: generic parameter 'A' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
  1 |
  2 | public struct Func<A, B> {
    |                    `- note: 'A' previously declared here
  3 |   public let call: (A) -> B
  4 |
    :
 37 |   }
 38 |
 39 |   public static func >¢< <A, B, C>(f: @escaping (B) -> A, g: Func<A, C>) -> Func<B, C> {
    |                           `- warning: generic parameter 'A' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
 40 |     return g.contramap(f)
 41 |   }
/Users/admin/builder/spi-builder-workspace/Sources/Prelude/Func.swift:39:31: warning: generic parameter 'B' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
  1 |
  2 | public struct Func<A, B> {
    |                       `- note: 'B' previously declared here
  3 |   public let call: (A) -> B
  4 |
    :
 37 |   }
 38 |
 39 |   public static func >¢< <A, B, C>(f: @escaping (B) -> A, g: Func<A, C>) -> Func<B, C> {
    |                              `- warning: generic parameter 'B' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
 40 |     return g.contramap(f)
 41 |   }
[114/117] Compiling Prelude Comparable.swift
/Users/admin/builder/spi-builder-workspace/Sources/Prelude/Comparable.swift:17:1: warning: extension declares a conformance of imported type 'Bool' to imported protocol 'Comparable'; this will not behave correctly if the owners of 'Swift' introduce this conformance in the future
15 | }
16 |
17 | extension Bool: Comparable {
   | |- warning: extension declares a conformance of imported type 'Bool' to imported protocol 'Comparable'; this will not behave correctly if the owners of 'Swift' introduce this conformance in the future
   | `- note: add '@retroactive' to silence this warning
18 |   public static func < (lhs: Bool, rhs: Bool) -> Bool {
19 |     return (lhs, rhs) == (false, true)
[115/117] Compiling Prelude Comparator.swift
/Users/admin/builder/spi-builder-workspace/Sources/Prelude/Comparable.swift:17:1: warning: extension declares a conformance of imported type 'Bool' to imported protocol 'Comparable'; this will not behave correctly if the owners of 'Swift' introduce this conformance in the future
15 | }
16 |
17 | extension Bool: Comparable {
   | |- warning: extension declares a conformance of imported type 'Bool' to imported protocol 'Comparable'; this will not behave correctly if the owners of 'Swift' introduce this conformance in the future
   | `- note: add '@retroactive' to silence this warning
18 |   public static func < (lhs: Bool, rhs: Bool) -> Bool {
19 |     return (lhs, rhs) == (false, true)
[116/117] Compiling Prelude Curry.swift
/Users/admin/builder/spi-builder-workspace/Sources/Prelude/Comparable.swift:17:1: warning: extension declares a conformance of imported type 'Bool' to imported protocol 'Comparable'; this will not behave correctly if the owners of 'Swift' introduce this conformance in the future
15 | }
16 |
17 | extension Bool: Comparable {
   | |- warning: extension declares a conformance of imported type 'Bool' to imported protocol 'Comparable'; this will not behave correctly if the owners of 'Swift' introduce this conformance in the future
   | `- note: add '@retroactive' to silence this warning
18 |   public static func < (lhs: Bool, rhs: Bool) -> Bool {
19 |     return (lhs, rhs) == (false, true)
[117/117] Compiling Prelude Endo.swift
/Users/admin/builder/spi-builder-workspace/Sources/Prelude/Comparable.swift:17:1: warning: extension declares a conformance of imported type 'Bool' to imported protocol 'Comparable'; this will not behave correctly if the owners of 'Swift' introduce this conformance in the future
15 | }
16 |
17 | extension Bool: Comparable {
   | |- warning: extension declares a conformance of imported type 'Bool' to imported protocol 'Comparable'; this will not behave correctly if the owners of 'Swift' introduce this conformance in the future
   | `- note: add '@retroactive' to silence this warning
18 |   public static func < (lhs: Bool, rhs: Bool) -> Bool {
19 |     return (lhs, rhs) == (false, true)
[118/132] Compiling Writer Writer.swift
/Users/admin/builder/spi-builder-workspace/Sources/Writer/Writer.swift:24:28: warning: generic parameter 'W' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
 1 | import Prelude
 2 |
 3 | public struct Writer<W: Monoid, A> {
   |                      `- note: 'W' previously declared here
 4 |   let a: A
 5 |   let w: W
   :
22 |   }
23 |
24 |   public static func <¢> <W, A, B> (f: @escaping (A) -> B, writer: Writer<W, A>) -> Writer<W, B> {
   |                           `- warning: generic parameter 'W' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
25 |     return writer.map(f)
26 |   }
/Users/admin/builder/spi-builder-workspace/Sources/Writer/Writer.swift:24:31: warning: generic parameter 'A' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
 1 | import Prelude
 2 |
 3 | public struct Writer<W: Monoid, A> {
   |                                 `- note: 'A' previously declared here
 4 |   let a: A
 5 |   let w: W
   :
22 |   }
23 |
24 |   public static func <¢> <W, A, B> (f: @escaping (A) -> B, writer: Writer<W, A>) -> Writer<W, B> {
   |                              `- warning: generic parameter 'A' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
25 |     return writer.map(f)
26 |   }
/Users/admin/builder/spi-builder-workspace/Sources/Writer/Writer.swift:36:27: warning: generic parameter 'W' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
 1 | import Prelude
 2 |
 3 | public struct Writer<W: Monoid, A> {
   |                      `- note: 'W' previously declared here
 4 |   let a: A
 5 |   let w: W
   :
34 |   }
35 |
36 |   public static func <*> <W, A, B> (f: Writer<W, (A) -> B>, writer: Writer<W, A>) -> Writer<W, B> {
   |                           `- warning: generic parameter 'W' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
37 |     return writer.apply(f)
38 |   }
/Users/admin/builder/spi-builder-workspace/Sources/Writer/Writer.swift:36:30: warning: generic parameter 'A' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
 1 | import Prelude
 2 |
 3 | public struct Writer<W: Monoid, A> {
   |                                 `- note: 'A' previously declared here
 4 |   let a: A
 5 |   let w: W
   :
34 |   }
35 |
36 |   public static func <*> <W, A, B> (f: Writer<W, (A) -> B>, writer: Writer<W, A>) -> Writer<W, B> {
   |                              `- warning: generic parameter 'A' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
37 |     return writer.apply(f)
38 |   }
[119/132] Emitting module Writer
/Users/admin/builder/spi-builder-workspace/Sources/Writer/Writer.swift:24:28: warning: generic parameter 'W' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
 1 | import Prelude
 2 |
 3 | public struct Writer<W: Monoid, A> {
   |                      `- note: 'W' previously declared here
 4 |   let a: A
 5 |   let w: W
   :
22 |   }
23 |
24 |   public static func <¢> <W, A, B> (f: @escaping (A) -> B, writer: Writer<W, A>) -> Writer<W, B> {
   |                           `- warning: generic parameter 'W' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
25 |     return writer.map(f)
26 |   }
/Users/admin/builder/spi-builder-workspace/Sources/Writer/Writer.swift:24:31: warning: generic parameter 'A' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
 1 | import Prelude
 2 |
 3 | public struct Writer<W: Monoid, A> {
   |                                 `- note: 'A' previously declared here
 4 |   let a: A
 5 |   let w: W
   :
22 |   }
23 |
24 |   public static func <¢> <W, A, B> (f: @escaping (A) -> B, writer: Writer<W, A>) -> Writer<W, B> {
   |                              `- warning: generic parameter 'A' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
25 |     return writer.map(f)
26 |   }
/Users/admin/builder/spi-builder-workspace/Sources/Writer/Writer.swift:36:27: warning: generic parameter 'W' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
 1 | import Prelude
 2 |
 3 | public struct Writer<W: Monoid, A> {
   |                      `- note: 'W' previously declared here
 4 |   let a: A
 5 |   let w: W
   :
34 |   }
35 |
36 |   public static func <*> <W, A, B> (f: Writer<W, (A) -> B>, writer: Writer<W, A>) -> Writer<W, B> {
   |                           `- warning: generic parameter 'W' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
37 |     return writer.apply(f)
38 |   }
/Users/admin/builder/spi-builder-workspace/Sources/Writer/Writer.swift:36:30: warning: generic parameter 'A' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
 1 | import Prelude
 2 |
 3 | public struct Writer<W: Monoid, A> {
   |                                 `- note: 'A' previously declared here
 4 |   let a: A
 5 |   let w: W
   :
34 |   }
35 |
36 |   public static func <*> <W, A, B> (f: Writer<W, (A) -> B>, writer: Writer<W, A>) -> Writer<W, B> {
   |                              `- warning: generic parameter 'A' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
37 |     return writer.apply(f)
38 |   }
[120/132] Compiling Reader Reader.swift
/Users/admin/builder/spi-builder-workspace/Sources/Reader/Reader.swift:18:28: warning: generic parameter 'R' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
 1 | import Prelude
 2 |
 3 | public struct Reader<R, A> {
   |                      `- note: 'R' previously declared here
 4 |   public let runReader: (R) -> A
 5 |
   :
16 |   }
17 |
18 |   public static func <¢> <R, A, B> (f: @escaping (A) -> B, reader: Reader<R, A>) -> Reader<R, B> {
   |                           `- warning: generic parameter 'R' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
19 |     return reader.map(f)
20 |   }
/Users/admin/builder/spi-builder-workspace/Sources/Reader/Reader.swift:18:31: warning: generic parameter 'A' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
 1 | import Prelude
 2 |
 3 | public struct Reader<R, A> {
   |                         `- note: 'A' previously declared here
 4 |   public let runReader: (R) -> A
 5 |
   :
16 |   }
17 |
18 |   public static func <¢> <R, A, B> (f: @escaping (A) -> B, reader: Reader<R, A>) -> Reader<R, B> {
   |                              `- warning: generic parameter 'A' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
19 |     return reader.map(f)
20 |   }
/Users/admin/builder/spi-builder-workspace/Sources/Reader/Reader.swift:32:27: warning: generic parameter 'R' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
 1 | import Prelude
 2 |
 3 | public struct Reader<R, A> {
   |                      `- note: 'R' previously declared here
 4 |   public let runReader: (R) -> A
 5 |
   :
30 |   }
31 |
32 |   public static func <*> <R, A, B> (f: Reader<R, (A) -> B>, reader: Reader<R, A>) -> Reader<R, B> {
   |                           `- warning: generic parameter 'R' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
33 |     return reader.apply(f)
34 |   }
/Users/admin/builder/spi-builder-workspace/Sources/Reader/Reader.swift:32:30: warning: generic parameter 'A' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
 1 | import Prelude
 2 |
 3 | public struct Reader<R, A> {
   |                         `- note: 'A' previously declared here
 4 |   public let runReader: (R) -> A
 5 |
   :
30 |   }
31 |
32 |   public static func <*> <R, A, B> (f: Reader<R, (A) -> B>, reader: Reader<R, A>) -> Reader<R, B> {
   |                              `- warning: generic parameter 'A' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
33 |     return reader.apply(f)
34 |   }
[121/132] Emitting module Reader
/Users/admin/builder/spi-builder-workspace/Sources/Reader/Reader.swift:18:28: warning: generic parameter 'R' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
 1 | import Prelude
 2 |
 3 | public struct Reader<R, A> {
   |                      `- note: 'R' previously declared here
 4 |   public let runReader: (R) -> A
 5 |
   :
16 |   }
17 |
18 |   public static func <¢> <R, A, B> (f: @escaping (A) -> B, reader: Reader<R, A>) -> Reader<R, B> {
   |                           `- warning: generic parameter 'R' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
19 |     return reader.map(f)
20 |   }
/Users/admin/builder/spi-builder-workspace/Sources/Reader/Reader.swift:18:31: warning: generic parameter 'A' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
 1 | import Prelude
 2 |
 3 | public struct Reader<R, A> {
   |                         `- note: 'A' previously declared here
 4 |   public let runReader: (R) -> A
 5 |
   :
16 |   }
17 |
18 |   public static func <¢> <R, A, B> (f: @escaping (A) -> B, reader: Reader<R, A>) -> Reader<R, B> {
   |                              `- warning: generic parameter 'A' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
19 |     return reader.map(f)
20 |   }
/Users/admin/builder/spi-builder-workspace/Sources/Reader/Reader.swift:32:27: warning: generic parameter 'R' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
 1 | import Prelude
 2 |
 3 | public struct Reader<R, A> {
   |                      `- note: 'R' previously declared here
 4 |   public let runReader: (R) -> A
 5 |
   :
30 |   }
31 |
32 |   public static func <*> <R, A, B> (f: Reader<R, (A) -> B>, reader: Reader<R, A>) -> Reader<R, B> {
   |                           `- warning: generic parameter 'R' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
33 |     return reader.apply(f)
34 |   }
/Users/admin/builder/spi-builder-workspace/Sources/Reader/Reader.swift:32:30: warning: generic parameter 'A' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
 1 | import Prelude
 2 |
 3 | public struct Reader<R, A> {
   |                         `- note: 'A' previously declared here
 4 |   public let runReader: (R) -> A
 5 |
   :
30 |   }
31 |
32 |   public static func <*> <R, A, B> (f: Reader<R, (A) -> B>, reader: Reader<R, A>) -> Reader<R, B> {
   |                              `- warning: generic parameter 'A' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
33 |     return reader.apply(f)
34 |   }
[122/132] Emitting module State
[123/132] Compiling State State.swift
[124/132] Compiling Either Nested.swift
[125/132] Emitting module ValidationSemigroup
[126/132] Compiling ValidationSemigroup ValidationSemigroup.swift
[127/132] Compiling Tuple Tuple.swift
[128/132] Emitting module Tuple
[129/132] Emitting module Either
[130/132] Compiling Either Either.swift
[131/132] Compiling Either Choice.swift
[132/132] Compiling Either EitherIO.swift
[133/148] Compiling Frp ValidationSemigroup.swift
[134/148] Compiling Frp UIKit.swift
[135/148] Emitting module Frp
[136/148] Compiling Frp Event.swift
[137/148] Compiling Optics Setter.swift
[138/148] Compiling Optics Star.swift
[139/148] Compiling Optics Review.swift
[140/148] Compiling Optics Prism.swift
[141/148] Compiling Optics KeyPath.swift
[142/149] Compiling Optics Getter.swift
[143/149] Emitting module Optics
[144/149] Compiling Optics Forget.swift
[145/149] Compiling Optics Fold.swift
[146/149] Compiling Optics Index.swift
[147/149] Compiling ValidationNearSemiring ValidationNearSemiring.swift
[148/149] Emitting module ValidationNearSemiring
[149/149] Compiling Optics Traversal.swift
Build complete! (15.37s)
Build complete.
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        "Never.swift",
        "Operators.swift",
        "Optional.swift",
        "Parallel.swift",
        "Plus.swift",
        "PrecedenceGroups.swift",
        "Ring.swift",
        "Semigroup.swift",
        "Semiring.swift",
        "Sequence.swift",
        "Set.swift",
        "String.swift",
        "Strong.swift",
        "Tuple.swift",
        "Unit.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "OpticsTests",
      "module_type" : "SwiftTarget",
      "name" : "OpticsTests",
      "path" : "Tests/OpticsTests",
      "sources" : [
        "OpticsTests.swift"
      ],
      "target_dependencies" : [
        "Optics"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Optics",
      "module_type" : "SwiftTarget",
      "name" : "Optics",
      "path" : "Sources/Optics",
      "product_memberships" : [
        "Optics"
      ],
      "sources" : [
        "Fold.swift",
        "Forget.swift",
        "Getter.swift",
        "Index.swift",
        "KeyPath.swift",
        "Prism.swift",
        "Review.swift",
        "Setter.swift",
        "Star.swift",
        "Traversal.swift"
      ],
      "target_dependencies" : [
        "Prelude",
        "Either"
      ],
      "type" : "library"
    },
    {
      "c99name" : "FrpTests",
      "module_type" : "SwiftTarget",
      "name" : "FrpTests",
      "path" : "Tests/FrpTests",
      "sources" : [
        "EventTests.swift"
      ],
      "target_dependencies" : [
        "Frp"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Frp",
      "module_type" : "SwiftTarget",
      "name" : "Frp",
      "path" : "Sources/Frp",
      "product_memberships" : [
        "Frp"
      ],
      "sources" : [
        "Event.swift",
        "UIKit.swift",
        "ValidationSemigroup.swift"
      ],
      "target_dependencies" : [
        "Prelude",
        "ValidationSemigroup"
      ],
      "type" : "library"
    },
    {
      "c99name" : "EitherTests",
      "module_type" : "SwiftTarget",
      "name" : "EitherTests",
      "path" : "Tests/EitherTests",
      "sources" : [
        "ChoiceTests.swift",
        "EitherTests.swift",
        "NestedTests.swift"
      ],
      "target_dependencies" : [
        "Either"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Either",
      "module_type" : "SwiftTarget",
      "name" : "Either",
      "path" : "Sources/Either",
      "product_dependencies" : [
        "Dependencies"
      ],
      "product_memberships" : [
        "Either",
        "Optics",
        "ValidationNearSemiring"
      ],
      "sources" : [
        "Choice.swift",
        "Either.swift",
        "EitherIO.swift",
        "Nested.swift"
      ],
      "target_dependencies" : [
        "Prelude"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.7"
}
Done.