Given following log snippets, their explanation, and nothing else, explain what failure, if any, occurred during build of this package.

  Snippets are in a format of [X] : [Y], where [X] is a log snippet, and [Y] is the explanation.

  Snippets are delimited with '================'.

  Drawing on information from all snippets, provide a concise explanation of the issue and recommend a solution.

  Explanation of the issue, and recommended solution, should take a handful of sentences.

  Snippets:

  [******************** TEST 'libomp :: ompt/misc/lock_double_destroy.cpp' FAILED ********************
Exit Code: 2

Command Output (stdout):
--
# RUN: at line 1
/builddir/build/BUILD/llvm-21.0.0_pre20250626.g2f9eee849f7d74-build/llvm-project-2f9eee849f7d7414c447d26625517edc34437138/llvm/redhat-linux-build/./bin/clang++ -fopenmp   -I /builddir/build/BUILD/llvm-21.0.0_pre20250626.g2f9eee849f7d74-build/llvm-project-2f9eee849f7d7414c447d26625517edc34437138/llvm/redhat-linux-build/runtimes/runtimes-bins/openmp/runtime/src -I /builddir/build/BUILD/llvm-21.0.0_pre20250626.g2f9eee849f7d74-build/llvm-project-2f9eee849f7d7414c447d26625517edc34437138/openmp/runtime/test -L /builddir/build/BUILD/llvm-21.0.0_pre20250626.g2f9eee849f7d74-build/llvm-project-2f9eee849f7d7414c447d26625517edc34437138/llvm/redhat-linux-build/runtimes/runtimes-bins/openmp/runtime/src  -fno-omit-frame-pointer -I /builddir/build/BUILD/llvm-21.0.0_pre20250626.g2f9eee849f7d74-build/llvm-project-2f9eee849f7d7414c447d26625517edc34437138/openmp/runtime/test/ompt -std=c++17 /builddir/build/BUILD/llvm-21.0.0_pre20250626.g2f9eee849f7d74-build/llvm-project-2f9eee849f7d7414c447d26625517edc34437138/openmp/runtime/test/ompt/misc/lock_double_destroy.cpp -o /builddir/build/BUILD/llvm-21.0.0_pre20250626.g2f9eee849f7d74-build/llvm-project-2f9eee849f7d7414c447d26625517edc34437138/llvm/redhat-linux-build/runtimes/runtimes-bins/openmp/runtime/test/ompt/misc/Output/lock_double_destroy.cpp.tmp -lm -latomic && /builddir/build/BUILD/llvm-21.0.0_pre20250626.g2f9eee849f7d74-build/llvm-project-2f9eee849f7d7414c447d26625517edc34437138/llvm/redhat-linux-build/runtimes/runtimes-bins/openmp/runtime/test/ompt/misc/Output/lock_double_destroy.cpp.tmp | tee /builddir/build/BUILD/llvm-21.0.0_pre20250626.g2f9eee849f7d74-build/llvm-project-2f9eee849f7d7414c447d26625517edc34437138/llvm/redhat-linux-build/runtimes/runtimes-bins/openmp/runtime/test/ompt/misc/Output/lock_double_destroy.cpp.tmp.out | /builddir/build/BUILD/llvm-21.0.0_pre20250626.g2f9eee849f7d74-build/llvm-project-2f9eee849f7d7414c447d26625517edc34437138/llvm/redhat-linux-build/./bin/FileCheck /builddir/build/BUILD/llvm-21.0.0_pre20250626.g2f9eee849f7d74-build/llvm-project-2f9eee849f7d7414c447d26625517edc34437138/openmp/runtime/test/ompt/misc/lock_double_destroy.cpp
# executed command: /builddir/build/BUILD/llvm-21.0.0_pre20250626.g2f9eee849f7d74-build/llvm-project-2f9eee849f7d7414c447d26625517edc34437138/llvm/redhat-linux-build/./bin/clang++ -fopenmp -I /builddir/build/BUILD/llvm-21.0.0_pre20250626.g2f9eee849f7d74-build/llvm-project-2f9eee849f7d7414c447d26625517edc34437138/llvm/redhat-linux-build/runtimes/runtimes-bins/openmp/runtime/src -I /builddir/build/BUILD/llvm-21.0.0_pre20250626.g2f9eee849f7d74-build/llvm-project-2f9eee849f7d7414c447d26625517edc34437138/openmp/runtime/test -L /builddir/build/BUILD/llvm-21.0.0_pre20250626.g2f9eee849f7d74-build/llvm-project-2f9eee849f7d7414c447d26625517edc34437138/llvm/redhat-linux-build/runtimes/runtimes-bins/openmp/runtime/src -fno-omit-frame-pointer -I /builddir/build/BUILD/llvm-21.0.0_pre20250626.g2f9eee849f7d74-build/llvm-project-2f9eee849f7d7414c447d26625517edc34437138/openmp/runtime/test/ompt -std=c++17 /builddir/build/BUILD/llvm-21.0.0_pre20250626.g2f9eee849f7d74-build/llvm-project-2f9eee849f7d7414c447d26625517edc34437138/openmp/runtime/test/ompt/misc/lock_double_destroy.cpp -o /builddir/build/BUILD/llvm-21.0.0_pre20250626.g2f9eee849f7d74-build/llvm-project-2f9eee849f7d7414c447d26625517edc34437138/llvm/redhat-linux-build/runtimes/runtimes-bins/openmp/runtime/test/ompt/misc/Output/lock_double_destroy.cpp.tmp -lm -latomic
# .---command stderr------------
# | In file included from /builddir/build/BUILD/llvm-21.0.0_pre20250626.g2f9eee849f7d74-build/llvm-project-2f9eee849f7d7414c447d26625517edc34437138/openmp/runtime/test/ompt/misc/lock_double_destroy.cpp:3:
# | /builddir/build/BUILD/llvm-21.0.0_pre20250626.g2f9eee849f7d74-build/llvm-project-2f9eee849f7d7414c447d26625517edc34437138/openmp/runtime/test/ompt/callback.h:829:18: warning: ISO C++11 does not allow conversion from string literal to 'char *' [-Wwritable-strings]
# |   829 |     event_name = "ompt_event_section_begin";
# |       |                  ^
# | /builddir/build/BUILD/llvm-21.0.0_pre20250626.g2f9eee849f7d74-build/llvm-project-2f9eee849f7d7414c447d26625517edc34437138/openmp/runtime/test/ompt/callback.h:833:18: warning: ISO C++11 does not allow conversion from string literal to 'char *' [-Wwritable-strings]
# |   833 |     event_name = "ompt_event_ws_loop_chunk_begin";
# |       |                  ^
# | /builddir/build/BUILD/llvm-21.0.0_pre20250626.g2f9eee849f7d74-build/llvm-project-2f9eee849f7d7414c447d26625517edc34437138/openmp/runtime/test/ompt/callback.h:837:18: warning: ISO C++11 does not allow conversion from string literal to 'char *' [-Wwritable-strings]
# |   837 |     event_name = "ompt_event_taskloop_chunk_begin";
# |       |                  ^
# | /builddir/build/BUILD/llvm-21.0.0_pre20250626.g2f9eee849f7d74-build/llvm-project-2f9eee849f7d7414c447d26625517edc34437138/openmp/runtime/test/ompt/callback.h:841:18: warning: ISO C++11 does not allow conversion from string literal to 'char *' [-Wwritable-strings]
# |   841 |     event_name = "ompt_event_distribute_chunk_begin";
# |       |                  ^
# | /builddir/build/BUILD/llvm-21.0.0_pre20250626.g2f9eee849f7d74-build/llvm-project-2f9eee849f7d7414c447d26625517edc34437138/openmp/runtime/test/ompt/callback.h:845:18: warning: ISO C++11 does not allow conversion from string literal to 'char *' [-Wwritable-strings]
# |   845 |     event_name = "ompt_ws_loop_iteration_begin";
# |       |                  ^
# | 5 warnings generated.
# `-----------------------------
# executed command: /builddir/build/BUILD/llvm-21.0.0_pre20250626.g2f9eee849f7d74-build/llvm-project-2f9eee849f7d7414c447d26625517edc34437138/llvm/redhat-linux-build/runtimes/runtimes-bins/openmp/runtime/test/ompt/misc/Output/lock_double_destroy.cpp.tmp
# note: command had no output on stdout or stderr
# error: command failed with exit status: -11
# executed command: tee /builddir/build/BUILD/llvm-21.0.0_pre20250626.g2f9eee849f7d74-build/llvm-project-2f9eee849f7d7414c447d26625517edc34437138/llvm/redhat-linux-build/runtimes/runtimes-bins/openmp/runtime/test/ompt/misc/Output/lock_double_destroy.cpp.tmp.out
# executed command: /builddir/build/BUILD/llvm-21.0.0_pre20250626.g2f9eee849f7d74-build/llvm-project-2f9eee849f7d7414c447d26625517edc34437138/llvm/redhat-linux-build/./bin/FileCheck /builddir/build/BUILD/llvm-21.0.0_pre20250626.g2f9eee849f7d74-build/llvm-project-2f9eee849f7d7414c447d26625517edc34437138/openmp/runtime/test/ompt/misc/lock_double_destroy.cpp
# .---command stderr------------
# | FileCheck error: '<stdin>' is empty.
# | FileCheck command line:  /builddir/build/BUILD/llvm-21.0.0_pre20250626.g2f9eee849f7d74-build/llvm-project-2f9eee849f7d7414c447d26625517edc34437138/llvm/redhat-linux-build/./bin/FileCheck /builddir/build/BUILD/llvm-21.0.0_pre20250626.g2f9eee849f7d74-build/llvm-project-2f9eee849f7d7414c447d26625517edc34437138/openmp/runtime/test/ompt/misc/lock_double_destroy.cpp
# `-----------------------------
# error: command failed with exit status: 2

--
]: [The test "libomp :: ompt/misc/lock_double_destroy.cpp" ended with result: "FAILED". This shows the output that was gathered for the test execution. It might contain insights into why the test "libomp :: ompt/misc/lock_double_destroy.cpp" had an unexpected outcome.]


Answer: Issue: At least one test had an unexpected outcome.
Resolution: Here is list of some ways to fix an unexpected test result:

a) Find out the reason why the test fails and fix it. Should that not work, follow any of the following options.
b) If you've found out that your test is flaky, perhaps you can allow it to run more than once (see https://llvm.org/docs/CommandGuide/lit.html#cmdoption-lit-max-retries-per-test).
c) If you need to mark your test to expectedly fail, you can set the LIT_XFAIL environment variable (see https://llvm.org/docs/CommandGuide/lit.html#cmdoption-lit-xfail).
d) Should none of the above tips work, filter out the test by using the LIT_FILTER_OUT environment variable (see. https://llvm.org/docs/CommandGuide/lit.html#cmdoption-lit-filter-out).