various improvements #5598

Job	Run time
cargo-deny-advisories	30s
check-packetline (ubuntu-latest)	5s
cargo-deny	28s
check-blocking	6s
pure-rust-build	1m 58s
lint	3m 41s
test-32bit (i386)	5m 36s
test	11m 41s
test-32bit (arm32v7)	4m 10s
test-fast (windows-latest)	16m 3s
test-fixtures-windows	15m 37s
test-fast (macos-latest)	4m 11s
test-journey	4m 8s
WebAssembly (wasm32-unknown-unknown)	1m 10s
test-fast (ubuntu-latest)	4m 0s
WebAssembly (wasm32-wasip1)	40s
test-fast (ubuntu-22.04-arm)	4m 4s
Tests pass	1s
	1h 18m 9s

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