[Swift CI] Build Failure: 0. OSS - Swift Incremental RA - Ubuntu 16.04 (main) #15842

# [FAILURE] oss-swift-incremental-RA-linux-ubuntu-16_04 [#15842]

Build URL: https://ci.swift.org/job/oss-swift-incremental-RA-linux-ubuntu-16_04/15842/
Project: oss-swift-incremental-RA-linux-ubuntu-16_04
Date of build: Tue, 16 Feb 2021 22:50:44 -0600
Build duration: 53 min

Identified problems:- Compile Error: This build failed because of a compile error. Below is a list of all errors in the build log:

Changes- Commit e60ccba7e8402626c94da3cc760930c90dbc8f70 by nate_chandler:

[gardening] Call llvm_unreachable after exhaustive switches.

  • edit: lib/IRGen/GenCall.cpp

  • edit: lib/IRGen/NecessaryBindings.h

  • Commit 4b4de73b2e8efe2eadadd72980467306831ee907 by github:

    [Collections] Fetch releases from GitHub (#3273)

    • edit: Sources/PackageCollections/Providers/GitHubPackageMetadataProvider.swift
    • delete: Fixtures/Collections/GitHub/tags.json
    • edit: Sources/PackageCollections/Providers/PackageMetadataProvider.swift
    • edit: Tests/PackageCollectionsTests/PackageCollectionsTests.swift
    • add: Fixtures/Collections/GitHub/releases.json
    • edit: Tests/PackageCollectionsTests/GitHubPackageMetadataProviderTests.swift
    • edit: Sources/PackageCollections/PackageCollections.swift
    • edit: Tests/PackageCollectionsTests/Utility.swift