Build Information
Failed to build Undertow, reference main (4968e6), with Swift 6.3 for Android on 15 Aug 2026 03:43:03 UTC.
Build Command
bash -c docker run --pull=always --rm -v "checkouts-54344849-0":/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:android-6.3-latest swift build --swift-sdk aarch64-unknown-linux-android28 2>&1Build Log
========================================
RunAll
========================================
Builder version: 5.0.1
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/MaksimG82/Undertow.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/MaksimG82/Undertow
* branch main -> FETCH_HEAD
* [new branch] main -> origin/main
HEAD is now at 4968e6b CONTRIBUTING.md with new-effect walkthrough (#35)
Cloned https://github.com/MaksimG82/Undertow.git
Revision (git rev-parse @):
4968e6b146f3d8eead535ccb96f7344f29aba2ef
SUCCESS checkout https://github.com/MaksimG82/Undertow.git at main
========================================
Build
========================================
Selected platform: android
Swift version: 6.3
Building package at path: $PWD
https://github.com/MaksimG82/Undertow.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-54344849-0":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/saguaro1/spi-images:android-6.3-latest swift build --swift-sdk aarch64-unknown-linux-android28 2>&1
android-6.3-latest: Pulling from saguaro1/spi-images
Digest: sha256:2b782c87e0bdf114eb0da12f6379a346f06569d6991407581da7dc03d1813adf
Status: Image is up to date for registry.gitlab.com/saguaro1/spi-images:android-6.3-latest
Building for debugging...
[0/20] Copying RGBInversion-iphonesimulator.metallib
[0/20] Copying RainbowNoise-iphoneos.metallib
[0/20] Copying GaussianBlur-iphonesimulator.metallib
[0/20] Copying Emboss-iphonesimulator.metallib
[0/20] Copying GaussianBlur-iphoneos.metallib
[0/20] Copying WhiteNoise-iphonesimulator.metallib
[0/20] Copying RGBInversion-iphoneos.metallib
[0/20] Copying WhiteNoise-iphoneos.metallib
[0/20] Copying Wave-iphonesimulator.metallib
[0/20] Copying Wave-iphoneos.metallib
[0/20] Copying Water-iphonesimulator.metallib
[0/20] Copying Shimmer-iphoneos.metallib
[1/20] Copying ColorPlanes-iphonesimulator.metallib
[1/20] Copying RainbowNoise-iphonesimulator.metallib
[2/20] Copying ColorPlanes-iphoneos.metallib
[4/20] Copying Emboss-iphoneos.metallib
[16/20] Copying Water-iphoneos.metallib
[17/20] Copying Shimmer-iphonesimulator.metallib
[18/20] Write sources
[19/20] Write swift-version-272D24FF697CF451.txt
error: emit-module command failed with exit code 1 (use -v to see invocation)
[21/48] Emitting module Undertow
/host/spi-builder-workspace/Sources/Undertow/Core/Effect.swift:8:8: error: no such module 'SwiftUI'
6 | //
7 |
8 | import SwiftUI
| `- error: no such module 'SwiftUI'
9 |
10 | /// The supported visual effects and their parameters.
[22/51] Compiling Undertow EffectSourceViewModifier.swift
/host/spi-builder-workspace/Sources/Undertow/Core/Effect.swift:8:8: error: no such module 'SwiftUI'
6 | //
7 |
8 | import SwiftUI
| `- error: no such module 'SwiftUI'
9 |
10 | /// The supported visual effects and their parameters.
[23/51] Compiling Undertow EffectTargetFramePreferenceKey.swift
/host/spi-builder-workspace/Sources/Undertow/Core/Effect.swift:8:8: error: no such module 'SwiftUI'
6 | //
7 |
8 | import SwiftUI
| `- error: no such module 'SwiftUI'
9 |
10 | /// The supported visual effects and their parameters.
[24/51] Compiling Undertow EffectTargetViewModifier.swift
/host/spi-builder-workspace/Sources/Undertow/Core/Effect.swift:8:8: error: no such module 'SwiftUI'
6 | //
7 |
8 | import SwiftUI
| `- error: no such module 'SwiftUI'
9 |
10 | /// The supported visual effects and their parameters.
[25/51] Compiling Undertow TargetMask.swift
/host/spi-builder-workspace/Sources/Undertow/Core/Effect.swift:8:8: error: no such module 'SwiftUI'
6 | //
7 |
8 | import SwiftUI
| `- error: no such module 'SwiftUI'
9 |
10 | /// The supported visual effects and their parameters.
[26/51] Compiling Undertow ShaderLibrary+RGBInversionLibrary.swift
/host/spi-builder-workspace/Sources/Undertow/Core/Effect.swift:8:8: error: no such module 'SwiftUI'
6 | //
7 |
8 | import SwiftUI
| `- error: no such module 'SwiftUI'
9 |
10 | /// The supported visual effects and their parameters.
[27/51] Compiling Undertow ShaderLibrary+colorPlanesLibrary.swift
/host/spi-builder-workspace/Sources/Undertow/Core/Effect.swift:8:8: error: no such module 'SwiftUI'
6 | //
7 |
8 | import SwiftUI
| `- error: no such module 'SwiftUI'
9 |
10 | /// The supported visual effects and their parameters.
[28/51] Compiling Undertow ShaderLibrary+embossLibrary.swift
/host/spi-builder-workspace/Sources/Undertow/Core/Effect.swift:8:8: error: no such module 'SwiftUI'
6 | //
7 |
8 | import SwiftUI
| `- error: no such module 'SwiftUI'
9 |
10 | /// The supported visual effects and their parameters.
[29/51] Compiling Undertow ShaderLibrary+gaussianBlurLibrary.swift
/host/spi-builder-workspace/Sources/Undertow/Core/Effect.swift:8:8: error: no such module 'SwiftUI'
6 | //
7 |
8 | import SwiftUI
| `- error: no such module 'SwiftUI'
9 |
10 | /// The supported visual effects and their parameters.
[30/51] Compiling Undertow Effect.swift
/host/spi-builder-workspace/Sources/Undertow/Core/Effect.swift:8:8: error: no such module 'SwiftUI'
6 | //
7 |
8 | import SwiftUI
| `- error: no such module 'SwiftUI'
9 |
10 | /// The supported visual effects and their parameters.
[31/51] Compiling Undertow EnvironmentValues.swift
/host/spi-builder-workspace/Sources/Undertow/Core/Effect.swift:8:8: error: no such module 'SwiftUI'
6 | //
7 |
8 | import SwiftUI
| `- error: no such module 'SwiftUI'
9 |
10 | /// The supported visual effects and their parameters.
[32/51] Compiling Undertow EffectCoordinatorModifier.swift
/host/spi-builder-workspace/Sources/Undertow/Core/Effect.swift:8:8: error: no such module 'SwiftUI'
6 | //
7 |
8 | import SwiftUI
| `- error: no such module 'SwiftUI'
9 |
10 | /// The supported visual effects and their parameters.
[33/51] Compiling Undertow MaskStore.swift
/host/spi-builder-workspace/Sources/Undertow/Core/Effect.swift:8:8: error: no such module 'SwiftUI'
6 | //
7 |
8 | import SwiftUI
| `- error: no such module 'SwiftUI'
9 |
10 | /// The supported visual effects and their parameters.
[34/51] Compiling Undertow View+effectTarget.swift
/host/spi-builder-workspace/Sources/Undertow/Core/Effect.swift:8:8: error: no such module 'SwiftUI'
6 | //
7 |
8 | import SwiftUI
| `- error: no such module 'SwiftUI'
9 |
10 | /// The supported visual effects and their parameters.
[35/51] Compiling Undertow View+embossEffect.swift
/host/spi-builder-workspace/Sources/Undertow/Core/Effect.swift:8:8: error: no such module 'SwiftUI'
6 | //
7 |
8 | import SwiftUI
| `- error: no such module 'SwiftUI'
9 |
10 | /// The supported visual effects and their parameters.
[36/51] Compiling Undertow View+gaussianBlurEffect.swift
/host/spi-builder-workspace/Sources/Undertow/Core/Effect.swift:8:8: error: no such module 'SwiftUI'
6 | //
7 |
8 | import SwiftUI
| `- error: no such module 'SwiftUI'
9 |
10 | /// The supported visual effects and their parameters.
[37/51] Compiling Undertow View+invertedEffect.swift
/host/spi-builder-workspace/Sources/Undertow/Core/Effect.swift:8:8: error: no such module 'SwiftUI'
6 | //
7 |
8 | import SwiftUI
| `- error: no such module 'SwiftUI'
9 |
10 | /// The supported visual effects and their parameters.
[38/51] Compiling Undertow View+rainbowNoiseEffect.swift
/host/spi-builder-workspace/Sources/Undertow/Core/Effect.swift:8:8: error: no such module 'SwiftUI'
6 | //
7 |
8 | import SwiftUI
| `- error: no such module 'SwiftUI'
9 |
10 | /// The supported visual effects and their parameters.
[39/51] Compiling Undertow View+shimmerEffect.swift
/host/spi-builder-workspace/Sources/Undertow/Core/Effect.swift:8:8: error: no such module 'SwiftUI'
6 | //
7 |
8 | import SwiftUI
| `- error: no such module 'SwiftUI'
9 |
10 | /// The supported visual effects and their parameters.
[40/51] Compiling Undertow View+waterEffect.swift
/host/spi-builder-workspace/Sources/Undertow/Core/Effect.swift:8:8: error: no such module 'SwiftUI'
6 | //
7 |
8 | import SwiftUI
| `- error: no such module 'SwiftUI'
9 |
10 | /// The supported visual effects and their parameters.
[41/51] Compiling Undertow ShaderLibrary+rainbowNoiseLibrary.swift
/host/spi-builder-workspace/Sources/Undertow/Core/Effect.swift:8:8: error: no such module 'SwiftUI'
6 | //
7 |
8 | import SwiftUI
| `- error: no such module 'SwiftUI'
9 |
10 | /// The supported visual effects and their parameters.
[42/51] Compiling Undertow ShaderLibrary+shimmerLibrary.swift
/host/spi-builder-workspace/Sources/Undertow/Core/Effect.swift:8:8: error: no such module 'SwiftUI'
6 | //
7 |
8 | import SwiftUI
| `- error: no such module 'SwiftUI'
9 |
10 | /// The supported visual effects and their parameters.
[43/51] Compiling Undertow ShaderLibrary+waterLibrary.swift
/host/spi-builder-workspace/Sources/Undertow/Core/Effect.swift:8:8: error: no such module 'SwiftUI'
6 | //
7 |
8 | import SwiftUI
| `- error: no such module 'SwiftUI'
9 |
10 | /// The supported visual effects and their parameters.
[44/51] Compiling Undertow ShaderLibrary+waveLibrary.swift
/host/spi-builder-workspace/Sources/Undertow/Core/Effect.swift:8:8: error: no such module 'SwiftUI'
6 | //
7 |
8 | import SwiftUI
| `- error: no such module 'SwiftUI'
9 |
10 | /// The supported visual effects and their parameters.
[45/51] Compiling Undertow ShaderLibrary+whiteNoiseLibrary.swift
/host/spi-builder-workspace/Sources/Undertow/Core/Effect.swift:8:8: error: no such module 'SwiftUI'
6 | //
7 |
8 | import SwiftUI
| `- error: no such module 'SwiftUI'
9 |
10 | /// The supported visual effects and their parameters.
[46/51] Compiling Undertow View+colorPlanesEffect.swift
/host/spi-builder-workspace/Sources/Undertow/Core/Effect.swift:8:8: error: no such module 'SwiftUI'
6 | //
7 |
8 | import SwiftUI
| `- error: no such module 'SwiftUI'
9 |
10 | /// The supported visual effects and their parameters.
[47/51] Compiling Undertow View+effectCoordinator.swift
/host/spi-builder-workspace/Sources/Undertow/Core/Effect.swift:8:8: error: no such module 'SwiftUI'
6 | //
7 |
8 | import SwiftUI
| `- error: no such module 'SwiftUI'
9 |
10 | /// The supported visual effects and their parameters.
[48/51] Compiling Undertow View+effectSource.swift
/host/spi-builder-workspace/Sources/Undertow/Core/Effect.swift:8:8: error: no such module 'SwiftUI'
6 | //
7 |
8 | import SwiftUI
| `- error: no such module 'SwiftUI'
9 |
10 | /// The supported visual effects and their parameters.
[49/51] Compiling Undertow View+waveEffect.swift
/host/spi-builder-workspace/Sources/Undertow/Core/Effect.swift:8:8: error: no such module 'SwiftUI'
6 | //
7 |
8 | import SwiftUI
| `- error: no such module 'SwiftUI'
9 |
10 | /// The supported visual effects and their parameters.
[50/51] Compiling Undertow View+whiteNoiseEffect.swift
/host/spi-builder-workspace/Sources/Undertow/Core/Effect.swift:8:8: error: no such module 'SwiftUI'
6 | //
7 |
8 | import SwiftUI
| `- error: no such module 'SwiftUI'
9 |
10 | /// The supported visual effects and their parameters.
[51/51] Compiling Undertow resource_bundle_accessor.swift
/host/spi-builder-workspace/Sources/Undertow/Core/Effect.swift:8:8: error: no such module 'SwiftUI'
6 | //
7 |
8 | import SwiftUI
| `- error: no such module 'SwiftUI'
9 |
10 | /// The supported visual effects and their parameters.
BUILD FAILURE 6.3 android