GCC Rust build and test

Create base class `AssociatedItem` #6285

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Run time

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Job	Run time
build-and-check-clang-macos	52m 48s
build-and-check-gcc-48	35m 16s
build-and-check-ubuntu-32bit	32m 7s
build-and-check-ubuntu-64bit	33m 49s
	2h 34m 0s