`testableExecutableWithEmbeddedResources` fails in some environments with SwiftBuild

[bkhouri]

Is it reproducible with SwiftPM command-line tools: swift build, swift test, swift package etc?

• Confirmed reproduction steps with SwiftPM CLI. The description text must include reproduction steps with either of command-line SwiftPM commands, swift build, swift test, swift package etc.

Description

The testableExecutableWithEmbeddedResources test fails in some environments.

Search for SWIFTCI_EXHIBITS_GH_9524 to find the impacted tests.

Expected behavior

The test passes

Actual behavior

The test fails in some environments when run against swiftbuild

Here are the test log failure:

• Run against SwiftBuild with debug build configuration: test_logs-swift-build-debug.txt
• Run against SwiftBuild with release build configuration: test_logs-swift-build-release.txt

Steps to reproduce

Ran command ./Utilities/build-using-self --configuration debug --triple x86_64-apple-macosx15.0 --skip-bootstrap in this environment.

To execute the impacted test, run

./Utilities/build-using-self --configuration debug --triple x86_64-apple-macosx15.0 --skip-bootstrap --additional-test-args "--filter testableExecutableWithEmbeddedResources"

Swift Package Manager version/commit hash

No response

Swift & OS version (output of swift --version ; uname -a)

$ swift --version
swift-driver version: 1.127.14.1 Apple Swift version 6.2 (swiftlang-6.2.0.19.9 clang-1700.3.19.1)
Target: x86_64-apple-macosx26.0

[Viditgupta-official]

Hi! I’m interested in investigating this issue. I’m currently getting familiar with SwiftBuild and reproducing the failure locally.
I’ll share findings once I have more context.

[Viditgupta-official]

I tried reproducing this using SwiftPM CLI only.

swift test --filter TestCommandTests.testableExecutableWithEmbeddedResources
runs and passes locally on macOS arm64.

I was not able to reproduce the failure with SwiftPM command-line tools.