[Swift CI] Build Failure: 0. OSS - Swift Incremental RA - Ubuntu 14.04 - Long Test (master) #323

Any idea what could cause this?

******************** TEST 'Swift-Unit :: runtime/LongTests/./SwiftRuntimeLongTests/LongRefcountingTest.nonatomic_unowned_retain_overflow_DeathTest' FAILED ********************
Note: Google Test filter = LongRefcountingTest.nonatomic_unowned_retain_overflow_DeathTest
[==========] Running 1 test from 1 test case.
[----------] Global test environment set-up.
[----------] 1 test from LongRefcountingTest
[ RUN ] LongRefcountingTest.nonatomic_unowned_retain_overflow_DeathTest
/home/buildnode/jenkins/workspace/oss-swift-incremental-RA-linux-ubuntu-14_04-long-test/swift/unittests/runtime/LongTests/LongRefcounting.cpp:329: Failure
Death test: swift_nonatomic_unownedRetain(object)
    Result: died but not with expected error.
  Expected: object's unowned reference was retained too many times
Actual msg:
[ DEATH ] Fatal error: Object's unowned reference was retained too many timesCurrent stack trace:
[ DEATH ] 0 SwiftRuntimeLongTests 0x000000000041125e <unavailable> + 70238
[ DEATH ] 1 SwiftRuntimeLongTests 0x00000000004112c4 <unavailable> + 70340
[ DEATH ] 2 SwiftRuntimeLongTests 0x0000000000423176 <unavailable> + 143734
[ DEATH ] 3 SwiftRuntimeLongTests 0x0000000000414099 <unavailable> + 82073
[ DEATH ] 4 SwiftRuntimeLongTests 0x0000000000422f74 <unavailable> + 143220
[ DEATH ] 5 SwiftRuntimeLongTests 0x000000000044c1be <unavailable> + 311742
[ DEATH ] 6 SwiftRuntimeLongTests 0x0000000000458b35 <unavailable> + 363317
[ DEATH ] 7 SwiftRuntimeLongTests 0x0000000000459750 <unavailable> + 366416
[ DEATH ] 8 SwiftRuntimeLongTests 0x0000000000459d53 <unavailable> + 367955
[ DEATH ] 9 SwiftRuntimeLongTests 0x00000000004641b9 <unavailable> + 410041
[ DEATH ] 10 SwiftRuntimeLongTests 0x0000000000463b8f <unavailable> + 408463
[ DEATH ] 11 SwiftRuntimeLongTests 0x000000000045012c <unavailable> + 327980
[ DEATH ] 12 libc.so.6 0x00007f5edd2f2e50 __libc_start_main + 245
[ DEATH ] 13 SwiftRuntimeLongTests 0x000000000040cb75 <unavailable> + 52085
[ DEATH ] /home/buildnode/jenkins/workspace/oss-swift-incremental-RA-linux-ubuntu-14_04-long-test/buildbot_incremental/swift-linux-x86_64/unittests/runtime/LongTests/./SwiftRuntimeLongTests[0x48b004]

···

On Aug 29, 2017, at 1:15 PM, no-reply@swift.org wrote:

[FAILURE] oss-swift-incremental-RA-linux-ubuntu-14_04-long-test [#323]

Build URL: https://ci.swift.org/job/oss-swift-incremental-RA-linux-ubuntu-14_04-long-test/323/
Project: oss-swift-incremental-RA-linux-ubuntu-14_04-long-test
Date of build: Tue, 29 Aug 2017 14:30:29 -0500
Build duration: 46 min
Identified problems:

Regression test failed: This build failed because a regression test in the test suite FAILed. Below is a list of all errors:
Indication 1 <https://ci.swift.org//job/oss-swift-incremental-RA-linux-ubuntu-14_04-long-test/323/consoleFull#-1159058117ba62d58e-7248-467b-91e0-c7508d5cf947>
Changes

Commit 3745d6b8963a396fb57d9ef989b5660d62b92b7b by mkchoi212:
[Diagnostics] Provide contextual type when diagnosing invalid if-exp

edit: test/Constraints/tuple_arguments.swift
edit: lib/Sema/CSDiag.cpp
edit: test/decl/enum/enumtest.swift

Commit 90501578b094590df6d0511ef920c93747bdd7c5 by eeckstein:
IRGen: fix statically initialized globals which contain an empty type.

add: test/SILOptimizer/global_init_with_empty.swift
edit: lib/IRGen/GenConstant.cpp
edit: lib/IRGen/GenStruct.cpp
edit: lib/IRGen/GenTuple.cpp
edit: lib/IRGen/GenTuple.h
edit: lib/IRGen/GenKeyPath.cpp
edit: lib/IRGen/GenStruct.h

Commit 9ff4bd51e8aac60d1487abde136e60497c225b26 by mark.lacey:
Make closures.swift test compile in both Swift 3 and 4 modes.

edit: test/Constraints/closures_swift4.swift
edit: test/Constraints/closures.swift
add: test/Constraints/closures_swift3.swift

Commit 6c7af2578f2051f527ddc151e37f81b292461b5f by mark.lacey:
Add a regression test for function argument conversions.

edit: test/Constraints/closures.swift

Commit d03a575279cf5c523779ef68f8d7903f09ba901e by github:
Unify the capitalization across all user-visible error messages

edit: stdlib/public/core/Assert.swift
edit: stdlib/public/core/BidirectionalCollection.swift
edit: validation-test/StdlibUnittest/CrashingTests.swift
edit: unittests/runtime/LongTests/LongRefcounting.cpp
edit: stdlib/public/core/ExistentialCollection.swift.gyb
edit: test/Frontend/OptimizationOptions-with-stdlib-checks.swift
edit: stdlib/public/core/Filter.swift.gyb
edit: stdlib/public/core/Optional.swift
edit: test/stdlib/SetTraps.swift
edit: stdlib/public/core/ImplicitlyUnwrappedOptional.swift
edit: tools/SwiftSyntax/RawSyntax.swift
edit: stdlib/public/core/KeyPath.swift
edit: validation-test/StdlibUnittest/ChildProcessShutdown/FailIfChildCrashesDuringShutdown.swift
edit: unittests/runtime/weak.mm
edit: stdlib/public/core/AssertCommon.swift
edit: stdlib/public/SDK/Foundation/IndexPath.swift
edit: stdlib/public/core/Integers.swift.gyb
edit: stdlib/private/StdlibUnittestFoundationExtras/StdlibUnittestFoundationExtras.swift
edit: stdlib/public/core/Collection.swift
edit: stdlib/public/core/Stride.swift.gyb
edit: test/IRGen/report_dead_method_call.swift
edit: stdlib/public/runtime/Errors.cpp
edit: stdlib/public/stubs/CommandLine.cpp
edit: stdlib/public/core/RangeReplaceableCollection.swift.gyb
edit: stdlib/public/runtime/HeapObject.cpp
edit: validation-test/stdlib/ArrayTraps.swift.gyb
edit: test/Frontend/OptimizationOptions-without-stdlib-checks.swift
edit: stdlib/public/core/StringUTF8.swift
edit: stdlib/public/core/HashedCollections.swift.gyb
edit: stdlib/public/SDK/simd/simd.swift.gyb
edit: stdlib/public/SDK/Foundation/Data.swift
edit: stdlib/public/core/DropWhile.swift.gyb
edit: test/SILOptimizer/arcsequenceopts.sil
edit: validation-test/stdlib/ArrayTrapsObjC.swift.gyb
edit: stdlib/public/SDK/XCTest/XCTest.swift
edit: stdlib/public/core/Arrays.swift.gyb
edit: stdlib/public/core/Builtin.swift
edit: stdlib/public/core/ThreadLocalStorage.swift
edit: stdlib/public/stubs/Assert.cpp
edit: stdlib/public/core/PrefixWhile.swift.gyb

Long time after but I've been getting this error running a long computation. Any news on why this was caused?

The program is meant to be up for around 12 hours. But around the 11th this error occurs. I've profiled the application on my mac and it is very stable with constant memory, however I deploy it onto a linux docker container in a cloud vm.

Any tips would be much appreciated. I haven't got much information on this error elsewhere.

Thanks,
Aravind