Add context in name validation errors #2085

Job	Run time
Measure coverage	1m 10s
Validate external types appearing in public API	57s
Clippy	49s
Check cross compilation targets	43s
Cargo Deny	7s
Feature Powerset	59s
MSRV	55s
Verify that no-std modes do not rely on libstd (--no-default-features)	6s
Verify that no-std modes do not rely on libstd (--no-default-features --features alloc)	6s
Cargo Package	47s
Check for documentation errors (stable)	1m 0s
Format	3s
Check for documentation errors (beta)	1m 4s
Check semver compatibility	53s
Check for documentation errors (nightly)	57s
Build+test (--all-features, stable)	1m 6s
Build+test (stable, ubuntu-latest)	49s
Build+test (--features=alloc, stable, ubuntu-latest)	42s
Build+test (--no-default-features, stable, ubuntu-latest)	31s
Build+test (--no-default-features --features alloc,std, stable, ubuntu-latest)	27s
Build+test (--all-features, --release, stable, ubuntu-latest)	1m 52s
Build+test (--all-features, nightly, ubuntu-latest)	1m 10s
Build+test (--all-features, beta, ubuntu-latest)	1m 24s
Build+test (--no-default-features --features alloc,std,aws-lc-rs, stable, macos-latest)	56s
Build+test (--no-default-features --features alloc,std,aws-lc-rs, stable, windows-latest)	3m 22s
Build+test (--no-default-features --features alloc,std,aws-lc-rs, stable, ubuntu-latest)	38s
	23m 33s

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