Disable optimization for jobserver pipe #1132

Job	Run time
Test build-std (aarch64-tvos)	4m 9s
Test build-std (aarch64-tvos-sim)	4m 26s
Test CUDA support	22s
Clippy	8s
Test build-std (x86_64-tvos)	3m 0s
Rustfmt	11s
MSRV (ubuntu-latest)	21s
Test (stable)	35s
MSRV (windows-latest)	42s
Test (beta)	37s
Test (nightly)	26s
Test (linux32)	1m 8s
Test (macos)	5m 1s
Test (aarch64-macos)	37s
Test (aarch64-ios)	57s
Test (win32)	1m 26s
Test (win64)	3m 5s
Test (mingw32)	1m 41s
Test (mingw64)	1m 22s
Test (windows-2019)	2m 0s
Test (windows-aarch64, windows-latest, stable, aarch64-pc-windows-msvc, --no-run)	1m 28s
	33m 42s

Provide feedback