Add context in name validation errors #2086

Job	Run time
Validate external types appearing in public API	56s
Clippy	52s
Measure coverage	1m 5s
Check cross compilation targets	27s
Cargo Deny	7s
Feature Powerset	1m 3s
MSRV	55s
Verify that no-std modes do not rely on libstd (--no-default-features)	8s
Verify that no-std modes do not rely on libstd (--no-default-features --features alloc)	6s
Cargo Package	49s
Check for documentation errors (stable)	48s
Format	7s
Check for documentation errors (beta)	57s
Check semver compatibility	56s
Check for documentation errors (nightly)	57s
Build+test (--all-features, stable)	1m 12s
Build+test (stable, ubuntu-latest)	51s
Build+test (--features=alloc, stable, ubuntu-latest)	43s
Build+test (--no-default-features, stable, ubuntu-latest)	27s
Build+test (--no-default-features --features alloc,std, stable, ubuntu-latest)	28s
Build+test (--all-features, --release, stable, ubuntu-latest)	1m 57s
Build+test (--all-features, nightly, ubuntu-latest)	1m 13s
Build+test (--all-features, beta, ubuntu-latest)	1m 24s
Build+test (--no-default-features --features alloc,std,aws-lc-rs, stable, macos-latest)	51s
Build+test (--no-default-features --features alloc,std,aws-lc-rs, stable, windows-latest)	1m 46s
Build+test (--no-default-features --features alloc,std,aws-lc-rs, stable, ubuntu-latest)	40s
	21m 45s

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