Disable `CC_ENABLE_DEBUG_OUTPUT` if it is set to "0" #1906

Job	Run time
Test wasm (wasm32-unknown-unknown)	21s
Test (stable)	1m 8s
Clippy	8s
Test (beta)	1m 13s
Test build-std (aarch64-tvos)	1m 41s
Test (nightly)	1m 14s
MSRV (ubuntu-latest)	24s
Test build-std (aarch64-tvos-sim)	2m 36s
Rustfmt	8s
Test (linux32)	2m 12s
MSRV (windows-latest)	44s
Test build-std (x86_64-tvos)	1m 52s
Test (macos)	3m 2s
MSRV (macos-latest)	29s
Test (aarch64-macos)	1m 38s
semver-checks	17s
Test (aarch64-ios)	1m 6s
Test wasm32-wasip1-thread	1m 2s
Test CUDA support	21s
Test (win32)	1m 41s
Test (win64)	2m 51s
Test (mingw32)	2m 49s
Test (mingw64)	2m 45s
Test (windows-2019)	3m 31s
Test (windows-aarch64, windows-latest, stable, aarch64-pc-windows-msvc, --no-run)	1m 39s
Test (windows-clang, windows-2019, stable, x86_64-pc-windows-msvc, clang, clang++)	3m 34s
Test (windows-clang-cl, windows-2019, stable, x86_64-pc-windows-msvc, clang-cl, clang-cl)	3m 29s
	43m 55s

Provide feedback