Return, don't fail, when extension used by non-root module #735

Job	Run time
external_test (macos-latest, latest, true)	9m 7s
test (macos-latest, 7.0.0, true)	6m 41s
external_test (macos-latest, latest, false)	12m 17s
test (macos-latest, 7.0.0, false)	2m 52s
abs_paths_test (true)	2m 14s
container_test (archlinux, true)	2m 26s
test (macos-latest, latest, true)	3m 42s
abs_paths_test (false)	2m 9s
external_test (ubuntu-latest, latest, true)	8m 10s
container_test (archlinux, false)	2m 36s
test (macos-latest, latest, false)	7m 34s
container_test (debian, true)	2m 26s
test (ubuntu-latest, 7.0.0, true)	2m 15s
container_test (debian, false)	2m 25s
lint	25s
test (ubuntu-latest, 7.0.0, false)	2m 15s
external_test (ubuntu-latest, latest, false)	7m 51s
container_test (fedora, true)	2m 52s
test (ubuntu-latest, latest, true)	2m 15s
container_test (fedora, false)	2m 52s
test (ubuntu-latest, latest, false)	2m 15s
sys_paths_test (true)	3m 28s
container_test (suse_leap, true)	4m 4s
xcompile_test (true)	2m 30s
sys_paths_test (false)	3m 26s
container_test (suse_leap, false)	3m 13s
xcompile_test (false)	2m 38s
container_test (suse_tumbleweed, true)	2m 44s
container_test (suse_tumbleweed, false)	2m 55s
container_test (ubuntu_20_04, true)	2m 29s
container_test (ubuntu_20_04, false)	2m 32s
container_test (ubuntu_22_04, true)	2m 29s
container_test (ubuntu_22_04, false)	2m 16s
container_test (linux_sysroot, true)	2m 34s
container_test (linux_sysroot, false)	2m 26s
	2h 7m 23s

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