Description of problem:
Package parlaylib fails to build from source in Fedora Rawhide.

Version-Release number of selected component (if applicable):
2.1.5^20230215git137076b-5.fc40

Steps to Reproduce:
koji build --scratch f40 parlaylib-2.1.5^20230215git137076b-5.fc40.src.rpm

Additional info:
This package is tracked by Koschei. See:
https://koschei.fedoraproject.org/package/parlaylib

Reproducible: Always

Actual Results:  
[==========] Running 1 test from 1 test suite.
[----------] Global test environment set-up.
[----------] 1 test from TestParsing
[ RUN      ] TestParsing.TestCharsToFloatSmall
655/656 Test #583: TestParsing.TestCharsToDoubleSmall-nosan ................................***Timeout 1500.01 sec
Running main() from gmock_main.cc
Note: Google Test filter = TestParsing.TestCharsToDoubleSmall
[==========] Running 1 test from 1 test suite.
[----------] Global test environment set-up.
[----------] 1 test from TestParsing
[ RUN      ] TestParsing.TestCharsToDoubleSmall
656/656 Test #584: TestParsing.TestCharsToLongDoubleSmall-nosan ............................***Timeout 1500.00 sec
Running main() from gmock_main.cc
Note: Google Test filter = TestParsing.TestCharsToLongDoubleSmall
[==========] Running 1 test from 1 test suite.
[----------] Global test environment set-up.
[----------] 1 test from TestParsing
[ RUN      ] TestParsing.TestCharsToLongDoubleSmall
99% tests passed, 3 tests failed out of 656
Total Test time (real) = 1725.83 sec
The following tests FAILED:
	582 - TestParsing.TestCharsToFloatSmall-nosan (Timeout)
	583 - TestParsing.TestCharsToDoubleSmall-nosan (Timeout)
	584 - TestParsing.TestCharsToLongDoubleSmall-nosan (Timeout)

Expected Results:  
Successful build.

This problem first appeared in Koschei in https://koschei.fedoraproject.org/build/17164734.

The test failures appear to be reproducible rather than flaky.

Because of this FTBFS, it was not possible to rebuild this package for the latest abseil-cpp update, currently in progress in side tag f40-build-side-82869. On the other hand, since this package is header-only and does not link the abseil-cpp libraries from any binary package, it was an error on my part to include it in that rebuild (rebuilding it was harmless but unnecessary), and the situation is no worse than it was before updating abseil-cpp.