Looks like SourceKit crashed while code completing a few times. Any ideas?
14:32:33 3. SourceKit crashed
14:32:33 request: CodeComplete in /Users/buildnode/jenkins/workspace-private/swift-master-sourcekitd-stress-tester/project_cache/Guitar/Sources/GuitarCase.swift (modified: concurrent) at offset 4211 with args: -module-name Guitar -incremental -emit-dependencies -emit-module -emit-module-path /Users/buildnode/jenkins/workspace-private/swift-master-sourcekitd-stress-tester/project_cache/Guitar/.build/x86_64-apple-macosx/release/Guitar.swiftmodule -output-file-map /Users/buildnode/jenkins/workspace-private/swift-master-sourcekitd-stress-tester/project_cache/Guitar/.build/x86_64-apple-macosx/release/Guitar.build/output-file-map.json -parse-as-library -whole-module-optimization -num-threads 4 -c /Users/buildnode/jenkins/workspace-private/swift-master-sourcekitd-stress-tester/project_cache/Guitar/Sources/Guitar.swift /Users/buildnode/jenkins/workspace-private/swift-master-sourcekitd-stress-tester/project_cache/Guitar/Sources/GuitarBoolean.swift /Users/buildnode/jenkins/workspace-private/swift-master-sourcekitd-stress-tester/project_cache/Guitar/Sources/GuitarCase.swift /Users/buildnode/jenkins/workspace-private/swift-master-sourcekitd-stress-tester/project_cache/Guitar/Sources/GuitarCharacter.swift /Users/buildnode/jenkins/workspace-private/swift-master-sourcekitd-stress-tester/project_cache/Guitar/Sources/GuitarChord.swift /Users/buildnode/jenkins/workspace-private/swift-master-sourcekitd-stress-tester/project_cache/Guitar/Sources/GuitarCommon.swift /Users/buildnode/jenkins/workspace-private/swift-master-sourcekitd-stress-tester/project_cache/Guitar/Sources/GuitarHelpers.swift /Users/buildnode/jenkins/workspace-private/swift-master-sourcekitd-stress-tester/project_cache/Guitar/Sources/GuitarNSRangeExtension.swift /Users/buildnode/jenkins/workspace-private/swift-master-sourcekitd-stress-tester/project_cache/Guitar/Sources/GuitarPadding.swift -I /Users/buildnode/jenkins/workspace-private/swift-master-sourcekitd-stress-tester/project_cache/Guitar/.build/x86_64-apple-macosx/release -target x86_64-apple-macosx10.10 -swift-version 4 -sdk /Applications/Xcode-beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.sdk -F /Applications/Xcode-beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -O -g -j4 -DSWIFT_PACKAGE -module-cache-path /Users/buildnode/jenkins/workspace-private/swift-master-sourcekitd-stress-tester/project_cache/Guitar/.build/x86_64-apple-macosx/release/ModuleCache -parseable-output -emit-objc-header -emit-objc-header-path /Users/buildnode/jenkins/workspace-private/swift-master-sourcekitd-stress-tester/project_cache/Guitar/.build/x86_64-apple-macosx/release/Guitar.build/Guitar-Swift.h