[Swift CI] Build Failure: 0. OSS - Swift Incremental RA - Ubuntu 16.04 (master) #13621

# [FAILURE] oss-swift-incremental-RA-linux-ubuntu-16_04 [#13621]

Build URL: https://ci.swift.org/job/oss-swift-incremental-RA-linux-ubuntu-16_04/13621/
Project: oss-swift-incremental-RA-linux-ubuntu-16_04
Date of build: Thu, 04 Jun 2020 16:20:22 -0500
Build duration: 18 min

Changes- Commit 135ae1898ad5b60c7813f92a0758dc24cc1e5b2e by mishal_shah:

Stop running swift driver test in parallel due to bug in swiftpm

  • edit: jobs/pull-request/pr-swift-driver.sh

  • Commit b5392e8fb3fd5edfc58552d6e6f01e0d60335dfc by github:

    Refactors internal func _applyMapping using _FixedArray16

    • edit: stdlib/public/core/UnicodeScalarProperties.swift
  • Commit f2fb53967c7f9a622288db4eaadfc1a720d4c670 by mikeash:

    [Runtime] Unify debug variable parsing from the environment and avoid

    • edit: stdlib/public/stubs/GlobalObjects.cpp
    • edit: stdlib/public/runtime/CMakeLists.txt
    • add: include/swift/Runtime/EnvironmentVariables.h
    • add: stdlib/public/runtime/EnvironmentVariables.def
    • edit: stdlib/public/runtime/SwiftObject.mm
    • edit: stdlib/public/runtime/Metadata.cpp
    • add: test/Runtime/environment_variables.swift
    • add: stdlib/public/runtime/EnvironmentVariables.cpp
  • Commit f9128bac81090e74c44118de01ec574d0990330f by compnerd:

    build: use the same pattern for detecting Darwin platforms

    • edit: stdlib/cmake/modules/AddSwiftStdlib.cmake
    • edit: cmake/modules/AddSwift.cmake
  • Commit cdf4efe4425e705d9adee59f010142bf81bc525c by blangmuir:

    [clang] Workaround module format issue with -gmodules

    • edit: Tests/SourceKitTests/XCTestManifests.swift
    • edit: Tests/SourceKitTests/LocalClangTests.swift
    • edit: Sources/SourceKit/Clang/ClangLanguageServer.swift
    • add: Tests/INPUTS/ClangModules/ClangModuleA.h
    • add: Tests/INPUTS/ClangModules/project.json
    • add: Tests/INPUTS/ClangModules/module.modulemap
    • add: Tests/INPUTS/ClangModules/ClangModules_main.m
  • Commit 8fdcd164ae1b3791587bea83d9fa8c6670d7572a by blangmuir:

    [clang] Workaround issue with relative -fmodules-cache-path

    • edit: Sources/SourceKit/Clang/ClangLanguageServer.swift