Swift Package IndexBuild Information
Failed to build FlexTrack, reference main (967836), with Swift 6.3 for Wasm on 19 Aug 2026 08:12:31 UTC.
Build Command
bash -c docker run --pull=always --rm -v "checkouts-53886769-0":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/saguaro1/spi-images:wasm-6.3-latest swift build --swift-sdk swift-6.3.2-RELEASE_wasm 2>&1Build Log
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RunAll
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Builder version: 5.0.2
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/flextrack-dev/flex_track_swift.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/flextrack-dev/flex_track_swift
* branch main -> FETCH_HEAD
* [new branch] main -> origin/main
HEAD is now at 967836f build: add CocoaPods specification for 1.1.0
Cloned https://github.com/flextrack-dev/flex_track_swift.git
Revision (git rev-parse @):
967836f99160ded7837da410d3b6e6ede051e9c1
SUCCESS checkout https://github.com/flextrack-dev/flex_track_swift.git at main
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Build
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Selected platform: wasm
Swift version: 6.3
Building package at path: $PWD
https://github.com/flextrack-dev/flex_track_swift.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-53886769-0":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/saguaro1/spi-images:wasm-6.3-latest swift build --swift-sdk swift-6.3.2-RELEASE_wasm 2>&1
wasm-6.3-latest: Pulling from saguaro1/spi-images
Digest: sha256:e92e38b97676c18adb57b57429ddfb766786102cb50cb918e0d9e8055d05b35d
Status: Image is up to date for registry.gitlab.com/saguaro1/spi-images:wasm-6.3-latest
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-24593BA9C3E375BF.txt
[3/17] Compiling FlexTrack Logging.swift
[4/17] Compiling FlexTrack PublicUtilities.swift
[5/17] Compiling FlexTrack Tracker.swift
[6/17] Compiling FlexTrack TrackingContext.swift
[7/17] Compiling FlexTrack Routing.swift
[8/17] Compiling FlexTrack RoutingPresets.swift
[9/18] Compiling FlexTrack EventQueue.swift
/host/spi-builder-workspace/Sources/FlexTrack/FileEventQueue.swift:61:44: error: 'atomic' is unavailable: atomic writing is unavailable in WASI because temporary files are not supported
59 | try FileManager.default.createDirectory(at: directory, withIntermediateDirectories: true)
60 | let data = try encoder.encode(value)
61 | try data.write(to: fileURL, options: [.atomic])
| `- error: 'atomic' is unavailable: atomic writing is unavailable in WASI because temporary files are not supported
62 | }
63 | }
FoundationEssentials.Data.WritingOptions.atomic:4:23: note: 'atomic' has been explicitly marked unavailable here
2 | struct WritingOptions {
3 | @available(*, unavailable, message: "atomic writing is unavailable in WASI because temporary files are not supported")
4 | public static let atomic: Data.WritingOptions }
| `- note: 'atomic' has been explicitly marked unavailable here
5 | }
6 |
[10/18] Compiling FlexTrack FileEventQueue.swift
/host/spi-builder-workspace/Sources/FlexTrack/FileEventQueue.swift:61:44: error: 'atomic' is unavailable: atomic writing is unavailable in WASI because temporary files are not supported
59 | try FileManager.default.createDirectory(at: directory, withIntermediateDirectories: true)
60 | let data = try encoder.encode(value)
61 | try data.write(to: fileURL, options: [.atomic])
| `- error: 'atomic' is unavailable: atomic writing is unavailable in WASI because temporary files are not supported
62 | }
63 | }
FoundationEssentials.Data.WritingOptions.atomic:4:23: note: 'atomic' has been explicitly marked unavailable here
2 | struct WritingOptions {
3 | @available(*, unavailable, message: "atomic writing is unavailable in WASI because temporary files are not supported")
4 | public static let atomic: Data.WritingOptions }
| `- note: 'atomic' has been explicitly marked unavailable here
5 | }
6 |
[11/18] Compiling FlexTrack FlexTrack.swift
[12/18] Compiling FlexTrack FlexTrackClient.swift
[13/18] Emitting module FlexTrack
[14/18] Compiling FlexTrack ConsentManager.swift
[15/18] Compiling FlexTrack Event.swift
[16/18] Compiling FlexTrack BuiltInTrackers.swift
[17/18] Compiling FlexTrack ConfigurationBuilder.swift
[18/18] Compiling FlexTrack TypedFailure.swift
BUILD FAILURE 6.3 wasm