[Swift CI] Build Failure: 0. OSS - Swift Incremental RA - Ubuntu 16.04 (main) #15006

# [FAILURE] oss-swift-incremental-RA-linux-ubuntu-16_04 [#15006]

Build URL: https://ci.swift.org/job/oss-swift-incremental-RA-linux-ubuntu-16_04/15006/
Project: oss-swift-incremental-RA-linux-ubuntu-16_04
Date of build: Wed, 04 Nov 2020 14:24:46 -0600
Build duration: 1 hr 16 min

Changes- Commit fa5c7120ef81b4f2e5a990d47626efbaa21e4abb by pyaskevich:

[ConstraintSystem] Ignore value-to-optional conversions to correctly detect conformance failures

  • edit: lib/Sema/CSSimplify.cpp

  • edit: test/Constraints/protocols.swift

  • Commit c8137326762d6c8bfccb93b1f4b4d33ec62c151b by github:

    Pass include paths when emitting macOS swiftmodule for zippered libraries (#34547)

    • edit: stdlib/cmake/modules/SwiftSource.cmake
  • Commit 12d114713f9f073957ca8377e731b25380998dad by github:

    [Runtime] Switch MetadataCache to ConcurrentReadableHashMap. (#34307)

    • edit: include/swift/Runtime/Mutex.h
    • edit: unittests/runtime/Mutex.cpp
    • edit: include/swift/Runtime/Concurrent.h
    • edit: stdlib/public/runtime/MetadataCache.h
    • edit: stdlib/public/runtime/Metadata.cpp