Regression

lldb-api.functionalities/gdb_remote_client.TestThreadSelectionBug.py (from lldb-api)

Failing for the past 1 build (Since Failed#23330 )
Took 1 min 40 sec.

Stacktrace

Script:
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/usr/local/Frameworks/Python.framework/Versions/3.7/bin/python3.7 /Users/buildslave/jenkins/workspace/lldb-cmake/llvm-project/lldb/test/API/dotest.py --arch x86_64 -s /Users/buildslave/jenkins/workspace/lldb-cmake/lldb-build/lldb-test-traces -S nm -u CXXFLAGS -u CFLAGS --codesign-identity - --server /Users/buildslave/jenkins/workspace/lldb-cmake/lldb-build/./bin/debugserver --arch x86_64 --build-dir /Users/buildslave/jenkins/workspace/lldb-cmake/lldb-build/lldb-test-build.noindex -s=/Users/buildslave/jenkins/workspace/lldb-cmake/test/logs -t --env TERM=vt100 --env LLVM_LIBS_DIR=/Users/buildslave/jenkins/workspace/lldb-cmake/lldb-build/./lib --build-dir /Users/buildslave/jenkins/workspace/lldb-cmake/lldb-build/lldb-test-build.noindex --lldb-module-cache-dir /Users/buildslave/jenkins/workspace/lldb-cmake/lldb-build/lldb-test-build.noindex/module-cache-lldb/lldb-api --clang-module-cache-dir /Users/buildslave/jenkins/workspace/lldb-cmake/lldb-build/lldb-test-build.noindex/module-cache-clang/lldb-api --executable /Users/buildslave/jenkins/workspace/lldb-cmake/lldb-build/./bin/lldb --compiler /Users/buildslave/jenkins/workspace/lldb-cmake/lldb-build/./bin/clang --dsymutil /Users/buildslave/jenkins/workspace/lldb-cmake/lldb-build/./bin/dsymutil --filecheck /Users/buildslave/jenkins/workspace/lldb-cmake/lldb-build/./bin/FileCheck --yaml2obj /Users/buildslave/jenkins/workspace/lldb-cmake/lldb-build/./bin/yaml2obj --lldb-libs-dir /Users/buildslave/jenkins/workspace/lldb-cmake/lldb-build/./lib /Users/buildslave/jenkins/workspace/lldb-cmake/llvm-project/lldb/test/API/functionalities/gdb_remote_client -p TestThreadSelectionBug.py
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Exit Code: 1

Command Output (stdout):
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lldb version 12.0.99
  clang revision 30c1633386e7cfb01c0a54b31ccf4c3a3873e71b
  llvm revision 30c1633386e7cfb01c0a54b31ccf4c3a3873e71b
LLDB library dir: /Users/buildslave/jenkins/workspace/lldb-cmake/lldb-build/bin
LLDB import library dir: /Users/buildslave/jenkins/workspace/lldb-cmake/lldb-build/./lib
libstdcxx tests will not be run because: Don't know how to build with libstdcxx on macosx
Skipping following debug info categories: ['dwo']

--
Command Output (stderr):
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Session logs for test failures/errors/unexpected successes will go into directory '/Users/buildslave/jenkins/workspace/lldb-cmake/test/logs'
Change dir to: /Users/buildslave/jenkins/workspace/lldb-cmake/llvm-project/lldb/test/API/functionalities/gdb_remote_client
runCmd: settings clear -all
output: 

runCmd: settings set symbols.enable-external-lookup false
output: 

runCmd: settings set target.inherit-tcc true
output: 

runCmd: settings set target.auto-apply-fixits false
output: 

runCmd: settings set plugin.process.gdb-remote.packet-timeout 60
output: 

runCmd: settings set symbols.clang-modules-cache-path "/Users/buildslave/jenkins/workspace/lldb-cmake/lldb-build/lldb-test-build.noindex/module-cache-lldb/lldb-api"
output: 

runCmd: settings set use-color false
output: 

runCmd: setting set target.prefer-dynamic-value no-dynamic-values
output: 

FAIL: LLDB (/Users/buildslave/jenkins/workspace/lldb-cmake/lldb-build/bin/clang-x86_64) :: test (TestThreadSelectionBug.TestThreadSelectionBug)
<bound method SBProcess.Kill of <lldb.SBProcess; proxy of <Swig Object of type 'lldb::SBProcess *' at 0x110079f60> >>: success

Restore dir to: /Users/buildslave/jenkins/workspace/lldb-cmake/lldb-build/tools/lldb/test
======================================================================
FAIL: test (TestThreadSelectionBug.TestThreadSelectionBug)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/Users/buildslave/jenkins/workspace/lldb-cmake/llvm-project/lldb/test/API/functionalities/gdb_remote_client/TestThreadSelectionBug.py", line 16, in test
    process = self.connect(target)
  File "/Users/buildslave/jenkins/workspace/lldb-cmake/llvm-project/lldb/test/API/functionalities/gdb_remote_client/gdbclientutils.py", line 519, in connect
    self.assertTrue(error.Success(), error.description)
AssertionError: False is not True : failed to get reply to handshake packet
Config=x86_64-/Users/buildslave/jenkins/workspace/lldb-cmake/lldb-build/bin/clang
----------------------------------------------------------------------
Ran 1 test in 91.292s

RESULT: FAILED (0 passes, 1 failures, 0 errors, 0 skipped, 0 expected failures, 0 unexpected successes)

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