Handle pthread return codes properly; fix deployment timeout infinite loop #3003

Job	Run time
Check git-secrets	1m 59s
Check formatting	2m 21s
Check build with GCC	53s
Check build with Clang	1m 5s
Check cross-build for arm32 Musl	3m 26s
Check clang-tidy	1m 37s
Check header includes	1m 24s
Check editorconfig	40s
Check spelling	1m 2s
Check cmake-lint	45s
Check shellcheck	35s
	15m 47s

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