Add CI compiling rustc #11

Job	Run time
build (x86_64-unknown-linux-gnu, https://github.com/rust-lang/gcc/releases/latest/download/gcc-15...	49m 5s
build (m68k-unknown-linux-gnu, m68k, https://github.com/rust-lang/gcc/releases/latest/download/gc...	44s
	49m 49s

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