Swift Package IndexBuild Information
Failed to build Synchronized, reference main (1a9cde), with Swift 6.1 for Linux on 14 Feb 2026 23:38:40 UTC.
Build Command
bash -c docker run --pull=always --rm -v "checkouts-4606859-1":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/finestructure/spi-images:basic-6.1-latest swift build --triple x86_64-unknown-linux-gnu 2>&1Build Log
========================================
RunAll
========================================
Builder version: 4.68.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/shareup/synchronized.git
Reference: main
Initialized empty Git repository in /host/spi-builder-workspace/.git/
hint: Using 'master' as the name for the initial branch. This default branch name
hint: is subject to change. To configure the initial branch name to use in all
hint: of your new repositories, which will suppress this warning, call:
hint:
hint: git config --global init.defaultBranch <name>
hint:
hint: Names commonly chosen instead of 'master' are 'main', 'trunk' and
hint: 'development'. The just-created branch can be renamed via this command:
hint:
hint: git branch -m <name>
From https://github.com/shareup/synchronized
* branch main -> FETCH_HEAD
* [new branch] main -> origin/main
HEAD is now at 1a9cde1 Add MIT license and update CI to latest macOS/Xcode (#11)
Cloned https://github.com/shareup/synchronized.git
Revision (git rev-parse @):
1a9cde1ffab5db3fe10b1a889c18312c9df510dc
SUCCESS checkout https://github.com/shareup/synchronized.git at main
========================================
Build
========================================
Selected platform: linux
Swift version: 6.1
Building package at path: $PWD
https://github.com/shareup/synchronized.git
https://github.com/shareup/synchronized.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
"dependencies" : [
],
"manifest_display_name" : "Synchronized",
"name" : "Synchronized",
"path" : "/host/spi-builder-workspace",
"platforms" : [
{
"name" : "macos",
"version" : "11.0"
},
{
"name" : "ios",
"version" : "14.0"
},
{
"name" : "tvos",
"version" : "14.0"
},
{
"name" : "watchos",
"version" : "7.0"
}
],
"products" : [
{
"name" : "Synchronized",
"targets" : [
"Synchronized"
],
"type" : {
"library" : [
"automatic"
]
}
}
],
"targets" : [
{
"c99name" : "SynchronizedTests",
"module_type" : "SwiftTarget",
"name" : "SynchronizedTests",
"path" : "Tests/SynchronizedTests",
"sources" : [
"Counter.swift",
"SynchronizedTests.swift"
],
"target_dependencies" : [
"Synchronized"
],
"type" : "test"
},
{
"c99name" : "Synchronized",
"module_type" : "SwiftTarget",
"name" : "Synchronized",
"path" : "Sources/Synchronized",
"product_memberships" : [
"Synchronized"
],
"sources" : [
"Lock.swift",
"Locked.swift",
"RecursiveLock.swift"
],
"type" : "library"
}
],
"tools_version" : "5.7"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-1":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/finestructure/spi-images:basic-6.1-latest swift build --triple x86_64-unknown-linux-gnu -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 2>&1
basic-6.1-latest: Pulling from finestructure/spi-images
Digest: sha256:8e1c3aab9de7fa4f6e33977b6a4cee007e876da3e605dda0be6b9b9bf86aa951
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.1-latest
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-24593BA9C3E375BF.txt
error: emit-module command failed with exit code 1 (use -v to see invocation)
[3/6] Emitting module Synchronized
/host/spi-builder-workspace/Sources/Synchronized/Lock.swift:4:47: error: cannot find type 'os_unfair_lock' in scope
2 |
3 | public final class Lock {
4 | private var backing: UnsafeMutablePointer<os_unfair_lock>
| `- error: cannot find type 'os_unfair_lock' in scope
5 |
6 | public init() {
/host/spi-builder-workspace/Sources/Synchronized/Locked.swift:4:54: error: cannot find type 'os_unfair_lock' in scope
2 |
3 | public struct Locked<Element> {
4 | private final class Lock: ManagedBuffer<Element, os_unfair_lock> {
| `- error: cannot find type 'os_unfair_lock' in scope
5 | deinit {
6 | withUnsafeMutablePointerToElements { lock in
/host/spi-builder-workspace/Sources/Synchronized/Locked.swift:12:48: error: cannot find type 'os_unfair_lock' in scope
10 | }
11 |
12 | private let buffer: ManagedBuffer<Element, os_unfair_lock>
| `- error: cannot find type 'os_unfair_lock' in scope
13 |
14 | public init(_ element: Element) {
[4/6] Compiling Synchronized Locked.swift
/host/spi-builder-workspace/Sources/Synchronized/Locked.swift:4:54: error: cannot find type 'os_unfair_lock' in scope
2 |
3 | public struct Locked<Element> {
4 | private final class Lock: ManagedBuffer<Element, os_unfair_lock> {
| `- error: cannot find type 'os_unfair_lock' in scope
5 | deinit {
6 | withUnsafeMutablePointerToElements { lock in
/host/spi-builder-workspace/Sources/Synchronized/Locked.swift:12:48: error: cannot find type 'os_unfair_lock' in scope
10 | }
11 |
12 | private let buffer: ManagedBuffer<Element, os_unfair_lock>
| `- error: cannot find type 'os_unfair_lock' in scope
13 |
14 | public init(_ element: Element) {
/host/spi-builder-workspace/Sources/Synchronized/Locked.swift:6:13: error: type of expression is ambiguous without a type annotation
4 | private final class Lock: ManagedBuffer<Element, os_unfair_lock> {
5 | deinit {
6 | withUnsafeMutablePointerToElements { lock in
| `- error: type of expression is ambiguous without a type annotation
7 | _ = lock.deinitialize(count: 1)
8 | }
/host/spi-builder-workspace/Sources/Synchronized/Locked.swift:17:35: error: cannot find 'os_unfair_lock' in scope
15 | buffer = Lock.create(minimumCapacity: 1) { buffer in
16 | buffer.withUnsafeMutablePointerToElements {
17 | $0.initialize(to: os_unfair_lock())
| `- error: cannot find 'os_unfair_lock' in scope
18 | }
19 | return element
/host/spi-builder-workspace/Sources/Synchronized/Locked.swift:15:16: error: type of expression is ambiguous without a type annotation
13 |
14 | public init(_ element: Element) {
15 | buffer = Lock.create(minimumCapacity: 1) { buffer in
| `- error: type of expression is ambiguous without a type annotation
16 | buffer.withUnsafeMutablePointerToElements {
17 | $0.initialize(to: os_unfair_lock())
/host/spi-builder-workspace/Sources/Synchronized/Locked.swift:25:13: error: cannot find 'os_unfair_lock_lock' in scope
23 | public func access<Return>(_ block: (inout Element) throws -> Return) rethrows -> Return {
24 | try buffer.withUnsafeMutablePointers { element, lock in
25 | os_unfair_lock_lock(lock)
| `- error: cannot find 'os_unfair_lock_lock' in scope
26 | defer { os_unfair_lock_unlock(lock) }
27 | return try block(&element.pointee)
[5/6] Compiling Synchronized Lock.swift
/host/spi-builder-workspace/Sources/Synchronized/Lock.swift:4:47: error: cannot find type 'os_unfair_lock' in scope
2 |
3 | public final class Lock {
4 | private var backing: UnsafeMutablePointer<os_unfair_lock>
| `- error: cannot find type 'os_unfair_lock' in scope
5 |
6 | public init() {
/host/spi-builder-workspace/Sources/Synchronized/Lock.swift:7:40: error: cannot find type 'os_unfair_lock' in scope
5 |
6 | public init() {
7 | backing = UnsafeMutablePointer<os_unfair_lock>.allocate(capacity: 1)
| `- error: cannot find type 'os_unfair_lock' in scope
8 | backing.initialize(to: os_unfair_lock())
9 | }
/host/spi-builder-workspace/Sources/Synchronized/Lock.swift:8:32: error: cannot find 'os_unfair_lock' in scope
6 | public init() {
7 | backing = UnsafeMutablePointer<os_unfair_lock>.allocate(capacity: 1)
8 | backing.initialize(to: os_unfair_lock())
| `- error: cannot find 'os_unfair_lock' in scope
9 | }
10 |
/host/spi-builder-workspace/Sources/Synchronized/Lock.swift:18:9: error: cannot find 'os_unfair_lock_lock' in scope
16 | public func locked<T>(_ block: () throws -> T) rethrows -> T {
17 | // https://developer.apple.com/documentation/os/1646466-os_unfair_lock_lock
18 | os_unfair_lock_lock(backing)
| `- error: cannot find 'os_unfair_lock_lock' in scope
19 | defer { os_unfair_lock_unlock(backing) }
20 | return try block()
/host/spi-builder-workspace/Sources/Synchronized/Lock.swift:19:17: error: cannot find 'os_unfair_lock_unlock' in scope
17 | // https://developer.apple.com/documentation/os/1646466-os_unfair_lock_lock
18 | os_unfair_lock_lock(backing)
19 | defer { os_unfair_lock_unlock(backing) }
| `- error: cannot find 'os_unfair_lock_unlock' in scope
20 | return try block()
21 | }
/host/spi-builder-workspace/Sources/Synchronized/Lock.swift:25:12: error: cannot find 'os_unfair_lock_trylock' in scope
23 | public func tryLocked(_ block: () throws -> Void) rethrows -> Bool {
24 | // https://developer.apple.com/documentation/os/1646469-os_unfair_lock_trylock
25 | if os_unfair_lock_trylock(backing) {
| `- error: cannot find 'os_unfair_lock_trylock' in scope
26 | defer { os_unfair_lock_unlock(backing) }
27 | try block()
/host/spi-builder-workspace/Sources/Synchronized/Lock.swift:26:21: error: cannot find 'os_unfair_lock_unlock' in scope
24 | // https://developer.apple.com/documentation/os/1646469-os_unfair_lock_trylock
25 | if os_unfair_lock_trylock(backing) {
26 | defer { os_unfair_lock_unlock(backing) }
| `- error: cannot find 'os_unfair_lock_unlock' in scope
27 | try block()
28 | return true
[6/6] Compiling Synchronized RecursiveLock.swift
/host/spi-builder-workspace/Sources/Synchronized/RecursiveLock.swift:14:54: error: cannot convert value of type 'Int' to expected argument type 'Int32'
12 | else { preconditionFailure() }
13 |
14 | guard pthread_mutexattr_settype(&attributes, PTHREAD_MUTEX_RECURSIVE) == 0
| `- error: cannot convert value of type 'Int' to expected argument type 'Int32'
15 | else { preconditionFailure() }
16 |
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-1":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/finestructure/spi-images:basic-6.1-latest swift build --triple x86_64-unknown-linux-gnu 2>&1
basic-6.1-latest: Pulling from finestructure/spi-images
Digest: sha256:8e1c3aab9de7fa4f6e33977b6a4cee007e876da3e605dda0be6b9b9bf86aa951
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.1-latest
[0/1] Planning build
Building for debugging...
[0/1] Write swift-version-24593BA9C3E375BF.txt
error: emit-module command failed with exit code 1 (use -v to see invocation)
[2/5] Emitting module Synchronized
/host/spi-builder-workspace/Sources/Synchronized/Lock.swift:4:47: error: cannot find type 'os_unfair_lock' in scope
2 |
3 | public final class Lock {
4 | private var backing: UnsafeMutablePointer<os_unfair_lock>
| `- error: cannot find type 'os_unfair_lock' in scope
5 |
6 | public init() {
/host/spi-builder-workspace/Sources/Synchronized/Locked.swift:4:54: error: cannot find type 'os_unfair_lock' in scope
2 |
3 | public struct Locked<Element> {
4 | private final class Lock: ManagedBuffer<Element, os_unfair_lock> {
| `- error: cannot find type 'os_unfair_lock' in scope
5 | deinit {
6 | withUnsafeMutablePointerToElements { lock in
/host/spi-builder-workspace/Sources/Synchronized/Locked.swift:12:48: error: cannot find type 'os_unfair_lock' in scope
10 | }
11 |
12 | private let buffer: ManagedBuffer<Element, os_unfair_lock>
| `- error: cannot find type 'os_unfair_lock' in scope
13 |
14 | public init(_ element: Element) {
[3/5] Compiling Synchronized Lock.swift
/host/spi-builder-workspace/Sources/Synchronized/Lock.swift:4:47: error: cannot find type 'os_unfair_lock' in scope
2 |
3 | public final class Lock {
4 | private var backing: UnsafeMutablePointer<os_unfair_lock>
| `- error: cannot find type 'os_unfair_lock' in scope
5 |
6 | public init() {
/host/spi-builder-workspace/Sources/Synchronized/Lock.swift:7:40: error: cannot find type 'os_unfair_lock' in scope
5 |
6 | public init() {
7 | backing = UnsafeMutablePointer<os_unfair_lock>.allocate(capacity: 1)
| `- error: cannot find type 'os_unfair_lock' in scope
8 | backing.initialize(to: os_unfair_lock())
9 | }
/host/spi-builder-workspace/Sources/Synchronized/Lock.swift:8:32: error: cannot find 'os_unfair_lock' in scope
6 | public init() {
7 | backing = UnsafeMutablePointer<os_unfair_lock>.allocate(capacity: 1)
8 | backing.initialize(to: os_unfair_lock())
| `- error: cannot find 'os_unfair_lock' in scope
9 | }
10 |
/host/spi-builder-workspace/Sources/Synchronized/Lock.swift:18:9: error: cannot find 'os_unfair_lock_lock' in scope
16 | public func locked<T>(_ block: () throws -> T) rethrows -> T {
17 | // https://developer.apple.com/documentation/os/1646466-os_unfair_lock_lock
18 | os_unfair_lock_lock(backing)
| `- error: cannot find 'os_unfair_lock_lock' in scope
19 | defer { os_unfair_lock_unlock(backing) }
20 | return try block()
/host/spi-builder-workspace/Sources/Synchronized/Lock.swift:19:17: error: cannot find 'os_unfair_lock_unlock' in scope
17 | // https://developer.apple.com/documentation/os/1646466-os_unfair_lock_lock
18 | os_unfair_lock_lock(backing)
19 | defer { os_unfair_lock_unlock(backing) }
| `- error: cannot find 'os_unfair_lock_unlock' in scope
20 | return try block()
21 | }
/host/spi-builder-workspace/Sources/Synchronized/Lock.swift:25:12: error: cannot find 'os_unfair_lock_trylock' in scope
23 | public func tryLocked(_ block: () throws -> Void) rethrows -> Bool {
24 | // https://developer.apple.com/documentation/os/1646469-os_unfair_lock_trylock
25 | if os_unfair_lock_trylock(backing) {
| `- error: cannot find 'os_unfair_lock_trylock' in scope
26 | defer { os_unfair_lock_unlock(backing) }
27 | try block()
/host/spi-builder-workspace/Sources/Synchronized/Lock.swift:26:21: error: cannot find 'os_unfair_lock_unlock' in scope
24 | // https://developer.apple.com/documentation/os/1646469-os_unfair_lock_trylock
25 | if os_unfair_lock_trylock(backing) {
26 | defer { os_unfair_lock_unlock(backing) }
| `- error: cannot find 'os_unfair_lock_unlock' in scope
27 | try block()
28 | return true
[4/5] Compiling Synchronized Locked.swift
/host/spi-builder-workspace/Sources/Synchronized/Locked.swift:4:54: error: cannot find type 'os_unfair_lock' in scope
2 |
3 | public struct Locked<Element> {
4 | private final class Lock: ManagedBuffer<Element, os_unfair_lock> {
| `- error: cannot find type 'os_unfair_lock' in scope
5 | deinit {
6 | withUnsafeMutablePointerToElements { lock in
/host/spi-builder-workspace/Sources/Synchronized/Locked.swift:12:48: error: cannot find type 'os_unfair_lock' in scope
10 | }
11 |
12 | private let buffer: ManagedBuffer<Element, os_unfair_lock>
| `- error: cannot find type 'os_unfair_lock' in scope
13 |
14 | public init(_ element: Element) {
/host/spi-builder-workspace/Sources/Synchronized/Locked.swift:6:13: error: type of expression is ambiguous without a type annotation
4 | private final class Lock: ManagedBuffer<Element, os_unfair_lock> {
5 | deinit {
6 | withUnsafeMutablePointerToElements { lock in
| `- error: type of expression is ambiguous without a type annotation
7 | _ = lock.deinitialize(count: 1)
8 | }
/host/spi-builder-workspace/Sources/Synchronized/Locked.swift:17:35: error: cannot find 'os_unfair_lock' in scope
15 | buffer = Lock.create(minimumCapacity: 1) { buffer in
16 | buffer.withUnsafeMutablePointerToElements {
17 | $0.initialize(to: os_unfair_lock())
| `- error: cannot find 'os_unfair_lock' in scope
18 | }
19 | return element
/host/spi-builder-workspace/Sources/Synchronized/Locked.swift:15:16: error: type of expression is ambiguous without a type annotation
13 |
14 | public init(_ element: Element) {
15 | buffer = Lock.create(minimumCapacity: 1) { buffer in
| `- error: type of expression is ambiguous without a type annotation
16 | buffer.withUnsafeMutablePointerToElements {
17 | $0.initialize(to: os_unfair_lock())
/host/spi-builder-workspace/Sources/Synchronized/Locked.swift:25:13: error: cannot find 'os_unfair_lock_lock' in scope
23 | public func access<Return>(_ block: (inout Element) throws -> Return) rethrows -> Return {
24 | try buffer.withUnsafeMutablePointers { element, lock in
25 | os_unfair_lock_lock(lock)
| `- error: cannot find 'os_unfair_lock_lock' in scope
26 | defer { os_unfair_lock_unlock(lock) }
27 | return try block(&element.pointee)
[5/5] Compiling Synchronized RecursiveLock.swift
/host/spi-builder-workspace/Sources/Synchronized/RecursiveLock.swift:14:54: error: cannot convert value of type 'Int' to expected argument type 'Int32'
12 | else { preconditionFailure() }
13 |
14 | guard pthread_mutexattr_settype(&attributes, PTHREAD_MUTEX_RECURSIVE) == 0
| `- error: cannot convert value of type 'Int' to expected argument type 'Int32'
15 | else { preconditionFailure() }
16 |
BUILD FAILURE 6.1 linux