Add context in name validation errors #2036

Job	Run time
Clippy	30s
Format	5s
Cargo Package	23s
Cargo Deny	7s
Check for documentation errors (stable)	33s
Build+test (--all-features, stable)	43s
Check for documentation errors (beta)	34s
Build+test (stable, ubuntu-latest)	41s
Check for documentation errors (nightly)	34s
Build+test (--features=alloc, stable, ubuntu-latest)	40s
Build+test (--no-default-features, stable, ubuntu-latest)	30s
Build+test (--no-default-features --features alloc,std, stable, ubuntu-latest)	27s
Validate external types appearing in public API	1m 0s
Build+test (--all-features, --release, stable, ubuntu-latest)	1m 21s
Build+test (--all-features, nightly, ubuntu-latest)	47s
Measure coverage	43s
Build+test (--all-features, beta, ubuntu-latest)	51s
Build+test (--no-default-features --features alloc,std,aws_lc_rs, stable, macos-latest)	50s
Build+test (--no-default-features --features alloc,std,aws_lc_rs, stable, windows-latest)	3m 14s
Check cross compilation targets	31s
Build+test (--no-default-features --features alloc,std,aws_lc_rs, stable, ubuntu-latest)	40s
Feature Powerset	32s
MSRV	30s
Verify that no-std modes do not rely on libstd (--no-default-features)	6s
Check semver compatibility	27s
Verify that no-std modes do not rely on libstd (--no-default-features --features alloc)	7s
	17m 26s

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