Swift Package IndexBuild Information
Failed to build swift-midi, reference main (c4598b), with Swift 6.3 for Linux on 1 May 2026 12:38:47 UTC.
Build Command
bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/swiftpackageindex/spi-images:basic-6.3-latest swift build --triple x86_64-unknown-linux-gnu 2>&1Build Log
========================================
RunAll
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Builder version: 4.70.0
Interrupt handler set up.
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Checkout
========================================
Clone URL: https://github.com/orchetect/swift-midi.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/orchetect/swift-midi
* branch main -> FETCH_HEAD
* [new branch] main -> origin/main
HEAD is now at c4598b1 Updated README
Cloned https://github.com/orchetect/swift-midi.git
Revision (git rev-parse @):
c4598b1ce029de06700086c11a8afd8c43143431
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/orchetect/swift-midi.git at main
========================================
Build
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Selected platform: linux
Swift version: 6.3
Building package at path: $PWD
https://github.com/orchetect/swift-midi.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/swiftpackageindex/spi-images:basic-6.3-latest swift build --triple x86_64-unknown-linux-gnu 2>&1
basic-6.3-latest: Pulling from swiftpackageindex/spi-images
Digest: sha256:5a7d791d2ead8a924b1292cb31bf3288eabcfe8880e0b005b00b45b71a5bc36a
Status: Image is up to date for registry.gitlab.com/swiftpackageindex/spi-images:basic-6.3-latest
Fetching https://github.com/orchetect/swift-midi-file
Fetching https://github.com/orchetect/swift-midi-controlsurfaces
Fetching https://github.com/orchetect/swift-midi-ui
Fetching https://github.com/orchetect/swift-midi-sync
Fetching https://github.com/orchetect/swift-midi-core
Fetching https://github.com/orchetect/swift-midi-io
[1/274] Fetching swift-midi-ui
[4/1316] Fetching swift-midi-ui, swift-midi-io
[1067/2019] Fetching swift-midi-ui, swift-midi-io, swift-midi-file
[1648/2294] Fetching swift-midi-ui, swift-midi-io, swift-midi-file, swift-midi-sync
[1700/3796] Fetching swift-midi-ui, swift-midi-io, swift-midi-file, swift-midi-sync, swift-midi-core
[2965/4246] Fetching swift-midi-ui, swift-midi-io, swift-midi-file, swift-midi-sync, swift-midi-core, swift-midi-controlsurfaces
Fetched https://github.com/orchetect/swift-midi-io from cache (0.43s)
Fetched https://github.com/orchetect/swift-midi-controlsurfaces from cache (0.43s)
Fetched https://github.com/orchetect/swift-midi-sync from cache (0.43s)
Fetched https://github.com/orchetect/swift-midi-file from cache (0.43s)
Fetched https://github.com/orchetect/swift-midi-core from cache (0.43s)
Fetched https://github.com/orchetect/swift-midi-ui from cache (0.43s)
Computing version for https://github.com/orchetect/swift-midi-ui
Computed https://github.com/orchetect/swift-midi-ui at 1.0.0 (0.96s)
Computing version for https://github.com/orchetect/swift-midi-sync
Computed https://github.com/orchetect/swift-midi-sync at 1.0.0 (0.50s)
Fetching https://github.com/orchetect/swift-timecode
[1/26966] Fetching swift-timecode
Fetched https://github.com/orchetect/swift-timecode from cache (1.61s)
Computing version for https://github.com/orchetect/swift-midi-io
Computed https://github.com/orchetect/swift-midi-io at 1.0.0 (2.11s)
Computing version for https://github.com/orchetect/swift-midi-file
Computed https://github.com/orchetect/swift-midi-file at 1.0.0 (0.55s)
Fetching https://github.com/orchetect/swift-data-parsing
[1/806] Fetching swift-data-parsing
Fetched https://github.com/orchetect/swift-data-parsing from cache (0.26s)
Computing version for https://github.com/orchetect/swift-midi-core
Computed https://github.com/orchetect/swift-midi-core at 1.0.0 (0.76s)
Computing version for https://github.com/orchetect/swift-midi-controlsurfaces
Computed https://github.com/orchetect/swift-midi-controlsurfaces at 1.0.0 (0.50s)
Computing version for https://github.com/orchetect/swift-timecode
Computed https://github.com/orchetect/swift-timecode at 3.1.1 (2.20s)
Computing version for https://github.com/orchetect/swift-data-parsing
Computed https://github.com/orchetect/swift-data-parsing at 0.1.2 (0.51s)
Creating working copy for https://github.com/orchetect/swift-midi-sync
Working copy of https://github.com/orchetect/swift-midi-sync resolved at 1.0.0
Creating working copy for https://github.com/orchetect/swift-data-parsing
Working copy of https://github.com/orchetect/swift-data-parsing resolved at 0.1.2
Creating working copy for https://github.com/orchetect/swift-midi-ui
Working copy of https://github.com/orchetect/swift-midi-ui resolved at 1.0.0
Creating working copy for https://github.com/orchetect/swift-timecode
Working copy of https://github.com/orchetect/swift-timecode resolved at 3.1.1
Creating working copy for https://github.com/orchetect/swift-midi-io
Working copy of https://github.com/orchetect/swift-midi-io resolved at 1.0.0
Creating working copy for https://github.com/orchetect/swift-midi-file
Working copy of https://github.com/orchetect/swift-midi-file resolved at 1.0.0
Creating working copy for https://github.com/orchetect/swift-midi-core
Working copy of https://github.com/orchetect/swift-midi-core resolved at 1.0.0
Creating working copy for https://github.com/orchetect/swift-midi-controlsurfaces
Working copy of https://github.com/orchetect/swift-midi-controlsurfaces resolved at 1.0.0
Building for debugging...
[0/14] Write sources
[10/14] Write swift-version-24593BA9C3E375BF.txt
error: emit-module command failed with exit code 1 (use -v to see invocation)
[12/132] Emitting module SwiftMIDIInternals
/host/spi-builder-workspace/.build/checkouts/swift-midi-core/Sources/SwiftMIDIInternals/Utilities/SafeDispatchTimer.swift:48:48: error: 'DispatchSourceHandler' is not a member type of class 'Dispatch.DispatchSource'
46 | leeway: DispatchTimeInterval = .nanoseconds(0),
47 | queue: DispatchQueue? = nil,
48 | eventHandler: @escaping DispatchSource.DispatchSourceHandler = { }
| `- error: 'DispatchSourceHandler' is not a member type of class 'Dispatch.DispatchSource'
49 | ) {
50 | self.rate = rate
Dispatch.DispatchSource:1:14: note: 'DispatchSource' declared here
1 | public class DispatchSource : DispatchObject, @unchecked Sendable, DispatchSourceProtocol, DispatchSourceRead, DispatchSourceSignal, DispatchSourceTimer, DispatchSourceUserDataAdd, DispatchSourceUserDataOr, DispatchSourceUserDataReplace, DispatchSourceWrite {
| `- note: 'DispatchSource' declared here
2 | deinit
3 | }
/host/spi-builder-workspace/.build/checkouts/swift-midi-core/Sources/SwiftMIDIInternals/Utilities/SafeDispatchTimer.swift:48:23: error: '@escaping' only applies to function types
46 | leeway: DispatchTimeInterval = .nanoseconds(0),
47 | queue: DispatchQueue? = nil,
48 | eventHandler: @escaping DispatchSource.DispatchSourceHandler = { }
| `- error: '@escaping' only applies to function types
49 | ) {
50 | self.rate = rate
/host/spi-builder-workspace/.build/checkouts/swift-midi-core/Sources/SwiftMIDIInternals/Utilities/SafeDispatchTimer.swift:123:67: error: 'DispatchSourceHandler' is not a member type of class 'Dispatch.DispatchSource'
121 |
122 | /// Set the event handler closure that the timer executes
123 | public func setEventHandler(handler: @escaping DispatchSource.DispatchSourceHandler) {
| `- error: 'DispatchSourceHandler' is not a member type of class 'Dispatch.DispatchSource'
124 | timer.setEventHandler(handler: handler)
125 | }
Dispatch.DispatchSource:1:14: note: 'DispatchSource' declared here
1 | public class DispatchSource : DispatchObject, @unchecked Sendable, DispatchSourceProtocol, DispatchSourceRead, DispatchSourceSignal, DispatchSourceTimer, DispatchSourceUserDataAdd, DispatchSourceUserDataOr, DispatchSourceUserDataReplace, DispatchSourceWrite {
| `- note: 'DispatchSource' declared here
2 | deinit
3 | }
/host/spi-builder-workspace/.build/checkouts/swift-midi-core/Sources/SwiftMIDIInternals/Utilities/SafeDispatchTimer.swift:123:42: error: '@escaping' only applies to function types
121 |
122 | /// Set the event handler closure that the timer executes
123 | public func setEventHandler(handler: @escaping DispatchSource.DispatchSourceHandler) {
| `- error: '@escaping' only applies to function types
124 | timer.setEventHandler(handler: handler)
125 | }
[13/134] Emitting module SwiftTimecodeCore
[14/144] Emitting module SwiftDataParsing
error: emit-module command failed with exit code 1 (use -v to see invocation)
[15/147] Emitting module SwiftMIDIIO
/host/spi-builder-workspace/.build/checkouts/swift-midi-io/Sources/Unsupported/SwiftMIDIIO.swift:10:8: error: no such module 'CoreMIDI'
8 |
9 | // artificially cause the build to fail by attempting to import an Apple-only framework
10 | import CoreMIDI
| `- error: no such module 'CoreMIDI'
11 |
[16/147] Compiling SwiftMIDIIO SwiftMIDIIO.swift
/host/spi-builder-workspace/.build/checkouts/swift-midi-io/Sources/Unsupported/SwiftMIDIIO.swift:10:8: error: no such module 'CoreMIDI'
8 |
9 | // artificially cause the build to fail by attempting to import an Apple-only framework
10 | import CoreMIDI
| `- error: no such module 'CoreMIDI'
11 |
/host/spi-builder-workspace/.build/checkouts/swift-midi-core/Sources/SwiftMIDIInternals/Utilities/Exception.swift:37:25: error: cannot find 'NSException' in scope
35 | reason: String? = nil
36 | ) {
37 | let exception = NSException(name: exceptionName, reason: reason, userInfo: nil)
| `- error: cannot find 'NSException' in scope
38 | exception.raise()
39 | }
BUILD FAILURE 6.3 linux