[Swift CI] Build Failure: OSS - Swift Package - Ubuntu 16.04 (swift 5.1) #41

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1

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[FAILURE] oss-swift-5.1-package-linux-ubuntu-16_04 [#41]

Build URL:
https://ci.swift.org/job/oss-swift-5.1-package-linux-ubuntu-16_04/41/
Project:
oss-swift-5.1-package-linux-ubuntu-16_04
Date of build:
Fri, 05 Apr 2019 14:52:10 -0500
Build duration:
35 min

Identified problems:

  • Compile Error: This build failed because of a compile error. Below is a list of all errors in the build log:
  • Swift Compile Error: Swift compiler error

Changes

  • Commit 459b36967f308cf702e7000f3e169eac477f5c28 by aprantl:
    Enable verbose logging to debug an issue only appearing on the bots.

    • edit: packages/Python/lldbsuite/test/lang/swift/backwards_compatibility/simple/TestSwiftBackwardsCompatibilitySimple.py
2

Looks like non-deterministic error

**15:27:21** FAILED: src/swiftDispatch.dir/Source.swift.o src/swiftDispatch.dir/Source.swift.swiftmodule src/swiftDispatch.dir/Source.swift.swiftdoc **15:27:21** cd /home/buildnode/jenkins/workspace/oss-swift-5.1-package-linux-ubuntu-16_04/build/buildbot_linux/libdispatch-linux-x86_64/src && /home/buildnode/jenkins/workspace/oss-swift-5.1-package-linux-ubuntu-16_04/build/buildbot_linux/swift-linux-x86_64/bin/swiftc -frontend -module-name Dispatch -module-link-name swiftDispatch -I /home/buildnode/jenkins/workspace/oss-swift-5.1-package-linux-ubuntu-16_04/swift-corelibs-libdispatch -O -Xcc -fblocks -Xcc -fmodule-map-file=/home/buildnode/jenkins/workspace/oss-swift-5.1-package-linux-ubuntu-16_04/swift-corelibs-libdispatch/dispatch/module.modulemap -emit-module-path /home/buildnode/jenkins/workspace/oss-swift-5.1-package-linux-ubuntu-16_04/build/buildbot_linux/libdispatch-linux-x86_64/src/swiftDispatch.dir/Source.swift.swiftmodule -emit-module-doc-path /home/buildnode/jenkins/workspace/oss-swift-5.1-package-linux-ubuntu-16_04/build/buildbot_linux/libdispatch-linux-x86_64/src/swiftDispatch.dir/Source.swift.swiftdoc -o /home/buildnode/jenkins/workspace/oss-swift-5.1-package-linux-ubuntu-16_04/build/buildbot_linux/libdispatch-linux-x86_64/src/swiftDispatch.dir/Source.swift.o -c /home/buildnode/jenkins/workspace/oss-swift-5.1-package-linux-ubuntu-16_04/swift-corelibs-libdispatch/src/swift/Block.swift /home/buildnode/jenkins/workspace/oss-swift-5.1-package-linux-ubuntu-16_04/swift-corelibs-libdispatch/src/swift/Data.swift /home/buildnode/jenkins/workspace/oss-swift-5.1-package-linux-ubuntu-16_04/swift-corelibs-libdispatch/src/swift/Dispatch.swift /home/buildnode/jenkins/workspace/oss-swift-5.1-package-linux-ubuntu-16_04/swift-corelibs-libdispatch/src/swift/IO.swift /home/buildnode/jenkins/workspace/oss-swift-5.1-package-linux-ubuntu-16_04/swift-corelibs-libdispatch/src/swift/Private.swift /home/buildnode/jenkins/workspace/oss-swift-5.1-package-linux-ubuntu-16_04/swift-corelibs-libdispatch/src/swift/Queue.swift -primary-file /home/buildnode/jenkins/workspace/oss-swift-5.1-package-linux-ubuntu-16_04/swift-corelibs-libdispatch/src/swift/Source.swift /home/buildnode/jenkins/workspace/oss-swift-5.1-package-linux-ubuntu-16_04/swift-corelibs-libdispatch/src/swift/Time.swift /home/buildnode/jenkins/workspace/oss-swift-5.1-package-linux-ubuntu-16_04/swift-corelibs-libdispatch/src/swift/Wrapper.swift
**15:27:21** <unknown>:0: warning: missing submodule '_SwiftDispatchOverlayShims'
**15:27:21** /home/buildnode/jenkins/workspace/oss-swift-5.1-package-linux-ubuntu-16_04/swift-corelibs-libdispatch/src/swift/Block.swift:14:8: error: no such module '_SwiftDispatchOverlayShims'
**15:27:21** import _SwiftDispatchOverlayShims
**15:27:21**        ^
**15:27:21** [81/91][ 89%][4.277s] Generating swiftDispatch.dir/Dispatch.swift.o, swiftDispatch.dir/Dispatch.swift.swiftmodule, swiftDispatch.dir/Dispatch.swift.swiftdoc
**15:27:21** /home/buildnode/jenkins/workspace/oss-swift-5.1-package-linux-ubuntu-16_04/swift-corelibs-libdispatch/src/swift/Dispatch.swift:99:4: warning: default will never be executed
**15:27:21**                         default: return nil
**15:27:21**                         ^