Tests

Do not fail if not matching LLVM toolchain root is found #560

Job	Run time
lint	17s
external_test (macos-latest, latest, true)	13m 3s
container_test (archlinux)	2m 29s
external_test (macos-latest, latest, false)	10m 26s
test (macos-latest, 6.0.0, false)	3m 14s
external_test (ubuntu-latest, latest, true)	8m 2s
container_test (debian)	2m 21s
abs_paths_test	2m 13s
test (macos-latest, 6.1.0, true)	4m 41s
external_test (ubuntu-latest, latest, false)	8m 11s
container_test (fedora)	2m 51s
test (macos-latest, latest, true)	3m 37s
container_test (suse_leap)	3m 22s
test (macos-latest, latest, false)	5m 31s
sys_paths_test	3m 16s
container_test (suse_tumbleweed)	2m 41s
xcompile_test	3m 12s
test (ubuntu-latest, 6.0.0, false)	2m 18s
container_test (ubuntu_20_04)	2m 30s
container_test (ubuntu_22_04)	2m 25s
container_test (linux_sysroot)	2m 34s
test (ubuntu-latest, 6.1.0, true)	2m 24s
test (ubuntu-latest, latest, true)	2m 38s
test (ubuntu-latest, latest, false)	2m 13s
	1h 36m 29s

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