linux

Suppress minor warnings #1585

Job	Run time
build (g++-8, Debug, 17, ubuntu-20.04, ON)	6m 17s
build (g++-8, Release, 17, ubuntu-20.04, ON)	8m 29s
build (g++-10, Debug, 17, ubuntu-20.04, ON)	6m 13s
build (g++-10, Release, 17, ubuntu-20.04, ON)	9m 23s
build (g++-13, Release, 23, ubuntu-20.04, ON, sudo apt -o Acquire::Retries=5 install g++-13)	13m 57s
build (g++-13, Debug, 23, ubuntu-20.04, ON, sudo apt -o Acquire::Retries=5 install g++-13)	9m 37s
build (g++-10, Release, 17, ubuntu-20.04, OFF, -DQUILL_NO_EXCEPTIONS=ON -DQUILL_BUILD_TESTS=ON)	1m 31s
build (g++-10, Release, 20, ubuntu-20.04, ON, -DQUILL_USE_VALGRIND=ON, -T memcheck, sudo apt -o A...	18m 52s
build (clang++-12, Release, 20, ubuntu-20.04, ON, -DQUILL_SANITIZE_ADDRESS=ON)	21m 34s
build (clang++-12, Release, 20, ubuntu-20.04, ON, -DQUILL_SANITIZE_THREAD=ON)	15m 59s
	1h 51m 52s

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