Swift Package Index

Build Information

Failed to build SwiftGrad, reference 0.3.1 (f384c0), with Swift 6.3 for Android on 19 Apr 2026 04:37:13 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4606859-3":/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:android-6.3-latest swift build --swift-sdk aarch64-unknown-linux-android28 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 4.70.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/SwiftAutograd/SwiftGrad.git
Reference: 0.3.1
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/SwiftAutograd/SwiftGrad
 * tag               0.3.1      -> FETCH_HEAD
HEAD is now at f384c05 Fix CI: downgrade swift-tools-version from 6.2 to 6.0
Cloned https://github.com/SwiftAutograd/SwiftGrad.git
Revision (git rev-parse @):
f384c05355dca7f5228ce686bf9e8a046de3339e
SUCCESS checkout https://github.com/SwiftAutograd/SwiftGrad.git at 0.3.1
========================================
Build
========================================
Selected platform:         android
Swift version:             6.3
Building package at path:  $PWD
https://github.com/SwiftAutograd/SwiftGrad.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-3":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/swiftpackageindex/spi-images:android-6.3-latest swift build --swift-sdk aarch64-unknown-linux-android28 2>&1
android-6.3-latest: Pulling from swiftpackageindex/spi-images
Digest: sha256:9008270ea37a55e78725e6225015adb5eff8582da520c5232bf0499f32c36dc4
Status: Image is up to date for registry.gitlab.com/swiftpackageindex/spi-images:android-6.3-latest
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version--4F562202D5529B1.txt
[3/7] Compiling SwiftGrad SwiftGrad.swift
[4/7] Compiling SwiftGrad NN.swift
[5/7] Compiling SwiftGrad Losses.swift
[6/7] Emitting module SwiftGrad
[7/7] Compiling SwiftGrad Engine.swift
/host/spi-builder-workspace/Sources/SwiftGrad/Engine.swift:77:17: error: cannot find 'Darwin' in scope
 75 |     /// Tanh activation
 76 |     public func tanh() -> Value {
 77 |         let t = Darwin.tanh(data)
    |                 `- error: cannot find 'Darwin' in scope
 78 |         let out = Value(t, children: [self], op: "tanh")
 79 |         out._backward = { [weak self, weak out] in
/host/spi-builder-workspace/Sources/SwiftGrad/Engine.swift:89:25: error: cannot find 'Darwin' in scope
 87 |     public func log() -> Value {
 88 |         let base = data
 89 |         let out = Value(Darwin.log(data), children: [self], op: "log")
    |                         `- error: cannot find 'Darwin' in scope
 90 |         out._backward = { [weak self, weak out] in
 91 |             guard let self, let out else { return }
/host/spi-builder-workspace/Sources/SwiftGrad/Engine.swift:99:17: error: cannot find 'Darwin' in scope
 97 |     /// Exponential: e^self
 98 |     public func exp() -> Value {
 99 |         let e = Darwin.exp(data)
    |                 `- error: cannot find 'Darwin' in scope
100 |         let out = Value(e, children: [self], op: "exp")
101 |         out._backward = { [weak self, weak out] in
BUILD FAILURE 6.3 android