various improvements #5481

Job	Run time
test	10m 35s
test-journey	4m 6s
cargo-deny	28s
cargo-deny-advisories	29s
check-blocking	6s
check-packetline (ubuntu-latest)	6s
lint	3m 53s
pure-rust-build	1m 56s
test-32bit	5m 38s
test-32bit-cross (armv7-linux-androideabi)	1m 8s
test-fast (windows-latest)	2m 29s
test-fixtures-windows	4m 50s
test-fast (macos-latest)	2m 52s
test-fast (ubuntu-latest)	2m 51s
WebAssembly (wasm32-unknown-unknown)	1m 10s
WebAssembly (wasm32-wasip1)	42s
Tests pass	1s
	43m 20s

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