Fix a few lints introducedin Rust 1.77 #869

Job	Run time
conformance	9m 6s
bindings-linux (x86_64-unknown-linux-gnu)	2m 36s
bindings-windows (x86_64-pc-windows-msvc, true)	7m 26s
bindings-macos (x86_64-apple-darwin)	3m 33s
bindings-linux (i686-unknown-linux-gnu)	2m 43s
bindings-windows (i686-pc-windows-msvc, false)	2m 43s
bindings-linux (x86_64-unknown-linux-musl)	2m 44s
bindings-linux (arm-unknown-linux-gnueabihf)	2m 50s
documentation	3m 6s
bindings-linux (arm-unknown-linux-musleabihf)	2m 50s
features (--no-default-features)	45s
bindings-linux (aarch64-unknown-linux-gnu)	2m 37s
features (--no-default-features --features serialization)	56s
guide	1m 6s
bindings-linux (aarch64-unknown-linux-musl)	2m 45s
features (--no-default-features --features serial)	1m 12s
bindings-linux (armv7-unknown-linux-gnueabihf)	2m 42s
features (--no-default-features --features tls)	56s
bindings-linux (arm-unknown-linux-gnueabi)	2m 44s
linting (stable)	52s
linting (beta)	53s
test (ubuntu-latest, stable)	44s
test (ubuntu-latest, beta)	38s
test (windows-latest, stable)	2m 3s
test (windows-latest, beta)	2m 14s
packaging	3m 37s
release	0s
	1h 6m 21s

Provide feedback