Swift compiler crasher dump - only on linux - swif 4.1

gistfile1.txt

Swift version: Swift version 4.1 (swift-4.1-RELEASE)
Target: x86_64-unknown-linux-gnu

swift: /home/buildnode/jenkins/workspace/oss-swift-4.1-package-linux-ubuntu-14_04/swift/include/swift/AST/Decl.h:840: void swift::Decl::setIsBeingValidated(bool): Assertion `DeclBits.BeingValidated != ibv' failed.
/usr/bin/swift[0x3b78654]
/usr/bin/swift[0x3b78dc6]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x10330)[0x7f84ee7f9330]
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x37)[0x7f84ecfdbc37]
/lib/x86_64-linux-gnu/libc.so.6(abort+0x148)[0x7f84ecfdf028]
/lib/x86_64-linux-gnu/libc.so.6(+0x2fbf6)[0x7f84ecfd4bf6]
/lib/x86_64-linux-gnu/libc.so.6(+0x2fca2)[0x7f84ecfd4ca2]
/usr/bin/swift[0x11e1667]
/usr/bin/swift[0x12692fe]
/usr/bin/swift[0x12690aa]
/usr/bin/swift[0x127899a]
/usr/bin/swift[0x1275a5f]
/usr/bin/swift[0x126ae4f]
/usr/bin/swift[0x126a8c6]
/usr/bin/swift[0x126b627]
/usr/bin/swift[0x126ce71]
/usr/bin/swift[0x126b51c]
/usr/bin/swift[0x1269e17]
/usr/bin/swift[0x11d9320]
/usr/bin/swift[0x160895b]
/usr/bin/swift[0x16069dd]
/usr/bin/swift[0x1216016]
/usr/bin/swift[0x127596b]
/usr/bin/swift[0x126ae4f]
/usr/bin/swift[0x126a8c6]
/usr/bin/swift[0x126b627]
/usr/bin/swift[0x126b51c]
/usr/bin/swift[0x1269e17]
/usr/bin/swift[0x126a178]
/usr/bin/swift[0x126999a]
/usr/bin/swift[0x1278aa8]
/usr/bin/swift[0x1275a5f]
/usr/bin/swift[0x126ae4f]
/usr/bin/swift[0x126a8c6]
/usr/bin/swift[0x126b627]
/usr/bin/swift[0x126b51c]
/usr/bin/swift[0x1269e17]
/usr/bin/swift[0x11d9320]
/usr/bin/swift[0x160895b]
/usr/bin/swift[0x121658d]
/usr/bin/swift[0x126b107]
/usr/bin/swift[0x126a8c6]
/usr/bin/swift[0x126b627]
/usr/bin/swift[0x126b51c]
/usr/bin/swift[0x1269e17]
/usr/bin/swift[0x11f2929]
/usr/bin/swift[0x11de62f]
/usr/bin/swift[0x11eee8b]
/usr/bin/swift[0x11de5cf]
/usr/bin/swift[0x11ee74b]
/usr/bin/swift[0x11de4f0]
/usr/bin/swift[0x11de39c]
/usr/bin/swift[0x127b0c5]
/usr/bin/swift[0xfd1fb0]
/usr/bin/swift[0xfd1810]
/usr/bin/swift[0x4b8211]
/usr/bin/swift[0x4b70b1]
/usr/bin/swift[0x4781e2]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf5)[0x7f84ecfc6f45]
/usr/bin/swift[0x475d87]
Stack dump:
0.	Program arguments: /usr/bin/swift -frontend -c /botengine/Sources/BotEngineKit/Autogenerated.swift /botengine/Sources/BotEngineKit/AutoProtocols.swift /botengine/Sources/BotEngineKit/Behavior.swift /botengine/Sources/BotEngineKit/BehaviorRunner.swift /botengine/Sources/BotEngineKit/Behaviors/CreateSurvey/CreateSurveyBehavior.swift -primary-file /botengine/Sources/BotEngineKit/Behaviors/CreateSurvey/CreateSurveyEffects.swift /botengine/Sources/BotEngineKit/Behaviors/CreateSurvey/CreateSurveyJobExecutor.swift /botengine/Sources/BotEngineKit/Behaviors/CreateSurvey/CreateSurveyModels.swift /botengine/Sources/BotEngineKit/Behaviors/Extensions.swift /botengine/Sources/BotEngineKit/Behaviors/RandomMathQuestionBehavior.swift /botengine/Sources/BotEngineKit/BotEngine.swift /botengine/Sources/BotEngineKit/Effects.swift /botengine/Sources/BotEngineKit/Message.swift /botengine/Sources/BotEngineKit/ObjectRepository.swift /botengine/Sources/BotEngineKit/Output.swift /botengine/Sources/BotEngineKit/ScheduledJob.swift /botengine/Sources/BotEngineKit/Services/FirebaseObjectRepository.swift /botengine/Sources/BotEngineKit/Services/GoogleAuth.swift /botengine/Sources/BotEngineKit/Services/SlackService.swift -target x86_64-unknown-linux -disable-objc-interop -sdk / -I /botengine/.build-ubuntu/x86_64-unknown-linux/debug -I /botengine/.build-ubuntu/checkouts/engine-3980453442405606279/Sources/CHTTP/include -enable-testing -g -module-cache-path /botengine/.build-ubuntu/x86_64-unknown-linux/debug/ModuleCache -swift-version 4 -Onone -D SWIFT_PACKAGE -color-diagnostics -Xcc -fmodule-map-file=/botengine/.build-ubuntu/checkouts/ctls.git--6433522664206742101/module.modulemap -Xcc -fmodule-map-file=/botengine/.build-ubuntu/x86_64-unknown-linux/debug/CHTTP.build/module.modulemap -emit-module-doc-path /botengine/.build-ubuntu/x86_64-unknown-linux/debug/BotEngineKit.build/CreateSurveyEffects~partial.swiftdoc -parse-as-library -module-name BotEngineKit -emit-module-path /botengine/.build-ubuntu/x86_64-unknown-linux/debug/BotEngineKit.build/CreateSurveyEffects~partial.swiftmodule -emit-dependencies-path /botengine/.build-ubuntu/x86_64-unknown-linux/debug/BotEngineKit.build/CreateSurveyEffects.d -emit-reference-dependencies-path /botengine/.build-ubuntu/x86_64-unknown-linux/debug/BotEngineKit.build/CreateSurveyEffects.swiftdeps -num-threads 4 -o /botengine/.build-ubuntu/x86_64-unknown-linux/debug/BotEngineKit.build/Behaviors/CreateSurvey/CreateSurveyEffects.swift.o 
1.	While type-checking extension of CreateSurveyBehavior at /botengine/Sources/BotEngineKit/Behaviors/CreateSurvey/CreateSurveyEffects.swift:44:1
2.	While type-checking 'EffectPerformer' at /botengine/Sources/BotEngineKit/Behaviors/CreateSurvey/CreateSurveyEffects.swift:46:12
3.	While type-checking 'perform(effect:for:)' at /botengine/Sources/BotEngineKit/Behaviors/CreateSurvey/CreateSurveyEffects.swift:64:16
4.	While resolving type Effect.EffectOutputProducer at [/botengine/Sources/BotEngineKit/Behaviors/CreateSurvey/CreateSurveyEffects.swift:64:72 - line:64:79] RangeText="Effect.E"
5.	While resolving type SignalProducer<EffectOutput, NoError> at [/botengine/Sources/BotEngineKit/Effects.swift:20:38 - line:20:74] RangeText="SignalProducer<EffectOutput, NoError>"
6.	While resolving type EffectOutput at [/botengine/Sources/BotEngineKit/Effects.swift:20:53 - line:20:53] RangeText="E"
7.	While resolving type (result: EffectResult, job: SchedulableJob<JobMessageType>?) at [/botengine/Sources/BotEngineKit/Effects.swift:19:30 - line:19:89] RangeText="(result: EffectResult, job: SchedulableJob<JobMessageType>?)"
8.	While validating 'BehaviorEffect' at /botengine/Sources/BotEngineKit/Effects.swift:12:8
<unknown>:0: error: unable to execute command: Aborted
<unknown>:0: error: compile command failed due to signal 6 (use -v to see invocation)