GCC Rust build and test

Start reusing rustc's `format_args` parser #6785

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Run time

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Job	Run time
build-and-check-clang-macos	19m 8s
build-and-check-gcc-48	1m 49s
build-and-check-ubuntu-32bit	20m 30s
build-and-check-ubuntu-64bit	20m 51s
	1h 2m 18s