[Swift CI] Build Failure: OSS - Swift Package - OS X (master) #3370

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[FAILURE] oss-swift-package-osx [#3370]

Build URL:
https://ci.swift.org/job/oss-swift-package-osx/3370/
Project:
oss-swift-package-osx
Date of build:
Wed, 05 Jun 2019 04:57:06 -0500
Build duration:
3 hr 29 min

Identified problems:

• LLVM Error: This build failed due to an LLVM error occurring.
  • Indication 1

Changes

• Commit fa513db7edd3da714790c5509eb46a543cd8fb77 by gwen.mittertreiner:
  Run Sourcekitd-tests in a non dispatch thread

  • edit: tools/SourceKit/tools/sourcekitd-test/sourcekitd-test.cpp
  • edit: tools/SourceKit/lib/SwiftLang/SwiftASTManager.cpp