Test failure: Loader_AssemblyDependencyResolverTests._AssemblyDependencyResolverTests_AssemblyDependencyResolverTests_/_AssemblyDependencyResolverTests_AssemblyDependencyResolverTests_sh

Opened on behalf of @AriNuer

The test Loader_AssemblyDependencyResolverTests._AssemblyDependencyResolverTests_AssemblyDependencyResolverTests_/_AssemblyDependencyResolverTests_AssemblyDependencyResolverTests_sh has failed.

Failure Message:

Unhandled Exception: System.IO.IOException: Read-only file system
   at Interop.ThrowExceptionForIoErrno(ErrorInfo errorInfo, String path, Boolean isDirectory, Func`2 errorRewriter)
   at Microsoft.Win32.SafeHandles.SafeFileHandle.Open(String path, OpenFlags flags, Int32 mode)
   at System.IO.FileStream.OpenHandle(FileMode mode, FileShare share, FileOptions options)
   at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, FileOptions options)
   at System.IO.FileSystem.CopyFile(String sourceFullPath, String destFullPath, Boolean overwrite)
   at TestLibrary.HostPolicyMock.Initialize(String testBasePath, String coreRoot) in /__w/3/s/tests/src/Common/CoreCLRTestLibrary/HostPolicyMock.cs:line 67
   at AssemblyDependencyResolverTests.AssemblyDependencyResolverTests.Initialize() in /__w/3/s/tests/src/Loader/AssemblyDependencyResolverTests/AssemblyDependencyResolverTests.cs:line 22
   at AssemblyDependencyResolverTests.TestBase.RunTestsForType(Type testType) in /__w/3/s/tests/src/Loader/AssemblyDependencyResolverTests/TestBase.cs:line 51
   at AssemblyDependencyResolverTests.TestBase.RunTests(Type[] testTypes) in /__w/3/s/tests/src/Loader/AssemblyDependencyResolverTests/TestBase.cs:line 30
   at AssemblyDependencyResolverTests.AssemblyDependencyResolverTests.Main() in /__w/3/s/tests/src/Loader/AssemblyDependencyResolverTests/AssemblyDependencyResolverTests.cs:line 314
/root/helix/work/workitem/AssemblyDependencyResolverTests/AssemblyDependencyResolverTests.sh: line 259:    74 Aborted                 (core dumped) $LAUNCHER $ExePath \"${CLRTestExecutionArguments[@]}\"
/n/nReturn code:      1/nRaw output file:      /root/helix/work/workitem/Reports/Loader.AssemblyDependencyResolverTests/AssemblyDependencyResolverTests/AssemblyDependencyResolverTests.output.txt/nRaw output:/nBEGIN EXECUTION
/root/helix/work/correlation/corerun AssemblyDependencyResolverTests.exe ''
TestMissingHostPolicy Start
TestMissingHostPolicy PASSED.
Expected: 100
Actual: 134
END EXECUTION - FAILED
Test Harness Exitcode is : 1
/nTo run the test:/n> set CORE_ROOT=/root/helix/work/correlation/n> /root/helix/work/workitem/AssemblyDependencyResolverTests/AssemblyDependencyResolverTests.sh/n
Expected: True
Actual:   False

Stack Trace:

   at Loader_AssemblyDependencyResolverTests._AssemblyDependencyResolverTests_AssemblyDependencyResolverTests_._AssemblyDependencyResolverTests_AssemblyDependencyResolverTests_sh() in /__w/3/s/bin/tests/Linux.arm64.Release/TestWrappers/Loader.AssemblyDependencyResolverTests/Loader.AssemblyDependencyResolverTests.XUnitWrapper.cs:line 109

Build : 3.0 - 20190324.72 (Core Tests)
Failing configurations:

• (Ubuntu.18.04.Arm64)Ubuntu.1604.Arm64.Docker@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-18.04-helix-arm64v8-0a0ebdd-20190312220351-arm64

• (Debian.9.Arm64 on Docker)Ubuntu.1604.Arm64.Docker@mcr.microsoft.com/dotnet-buildtools/prereqs:debian-9-helix-arm64v8-0a0ebdd-20190312215438-arm64

Details:
https://mc.dot.net/#/product/netcore/30/source/official~2Fdotnet~2Fcoreclr~2Frefs~2Fheads~2Fmaster/type/test~2Ffunctional~2Fcli~2F/build/20190324.72/workItem/Loader.AssemblyDependencyResolverTests/analysis/xunit/Loader_AssemblyDependencyResolverTests._AssemblyDependencyResolverTests_AssemblyDependencyResolverTests_~2F_AssemblyDependencyResolverTests_AssemblyDependencyResolverTests_sh

[RussKeldorph]

I believe https://dnceng.visualstudio.com/internal/_build/results?buildId=130640 is the first build where this failed. Something wrong with the new queues? @jkoritzinsky @jashook @ulisesh

[jkoritzinsky]

Yep. Core_Root is read-only on the new queues and this test relies on being able to write to Core_Root. Opened dotnet/core-eng#5638.