run-make: extraneous cg_clif test output fences

[jieyouxu]

I just tried it and I'm still getting a bunch of

running: LC_ALL="C" LD_LIBRARY_PATH="/home/bjorn/cg_clif/rust/build/x86_64-unknown-linux-gnu/test/run-make/native-link-modifier-whole-archive/rmake_out:/home/bjorn/cg_clif/rust/build/x86_64-unknown-linux-gnu/stage0-sysroot/lib/rustlib/x86_64-unknown-linux-gnu/lib:/home/bjorn/cg_clif/rust/build/x86_64-unknown-linux-gnu/bootstrap-tools/x86_64-unknown-linux-gnu/release/deps:/home/bjorn/cg_clif/rust/../dist/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/home/bjorn/cg_clif/rust/build/x86_64-unknown-linux-gnu/test/run-make/native-link-modifier-whole-archive/rmake_out/directly_linked"

and

------extern-multiple-copies/rmake stdout------------------------------

------extern-multiple-copies/rmake stderr------------------------------

------------------------------------------

for tests that don't have any output. It is a big improvement though.

Originally posted by @bjorn3 in #155220 (comment)