GCC Rust build and test

Create base class `AssociatedItem` #6283

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Run time

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Job	Run time
build-and-check-ubuntu-64bit	42m 15s
build-and-check-gcc-48	41m 33s
build-and-check-ubuntu-32bit	40m 23s
build-and-check-clang-macos	35m 58s
	2h 40m 9s