[Swift CI] Build Failure: 0. OSS - Swift Incremental RA - Ubuntu 16.04 - Long Test (release/5.4) #123

# [FAILURE] oss-swift-5.4-incremental-RA-linux-ubuntu-16_04-long-test [#123]

Build URL: https://ci.swift.org/job/oss-swift-5.4-incremental-RA-linux-ubuntu-16_04-long-test/123/
Project: oss-swift-5.4-incremental-RA-linux-ubuntu-16_04-long-test
Date of build: Wed, 06 Jan 2021 01:07:08 -0600
Build duration: 51 min

Changes- Commit 6fabb0fc4f362c154d7998aaa59909b3170be80d by github:

Add missing dispatch group leave in case of download artifacts download fail (#3149)

  • edit: Sources/Workspace/Workspace.swift

  • Commit 0b30191dc71e6d0ea5f09eba2cc9fadd1f864bde by github:

    improve manifest loader concurrency and tests (#3160)

    • edit: Tests/CommandsTests/PackageToolTests.swift
    • edit: Tests/PackageLoadingTests/PD4_2LoadingTests.swift
    • edit: Sources/Basics/ConcurrencyHelpers.swift
    • edit: Sources/PackageLoading/ManifestLoader.swift
  • Commit bb0d6f771c102f5d2354e63a97caa609e9ac1196 by github:

    [Gardening] change horizontal tabs to correct number of spaces for indentation (#3153)

    • edit: Tests/PackageLoadingTests/PackageBuilderTests.swift
    • edit: Sources/Workspace/Workspace.swift
    • edit: Tests/XcodeprojTests/PackageGraphTests.swift
  • Commit 4ec3450138a011cf50e45c6dc26dd88eec4e1a68 by owen:

    [Explicit Modules] Support using -experimental-explicit-module-build with immediate mode

    • edit: Tests/SwiftDriverTests/SwiftDriverTests.swift
    • edit: Tests/SwiftDriverTests/ExplicitModuleBuildTests.swift
    • edit: Sources/SwiftDriver/Driver/Driver.swift
    • edit: Sources/SwiftDriver/Jobs/Planning.swift
  • Commit c3bd7fa48b618867da7f41d263ba125359af42b2 by owen:

    Add support for the -update-code flag used to run the migrator

    • edit: Tests/SwiftDriverTests/SwiftDriverTests.swift
    • edit: Sources/SwiftDriver/Driver/Driver.swift
    • edit: Sources/SwiftDriver/Jobs/FrontendJobHelpers.swift
    • edit: Sources/SwiftDriver/Utilities/Diagnostics.swift