Rust

xtask: improved error output for "wrong" repr #7303

Job	Run time
Integration Test (x86_64 Windows)	3m 34s
Integration Test (AArch64)	1m 33s
Integration Test (IA-32)	1m 22s
Integration Test (x86_64)	1m 42s
Nightly (build, test, doc)	2m 27s
Unit + Doc Tests	49s
Build Standard Binary (nightly)	25s
Build (uefi-raw MSRV)	38s
Build (stable MSRV)	1m 35s
Build (feature permutations)	3m 56s
Unit + Doc Tests (Miri)	2m 26s
Test Coverage	48s
	21m 15s

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