Fix unsolicted bug #846

Job	Run time
conformance	10m 34s
bindings-windows (x86_64-pc-windows-msvc, true)	7m 35s
bindings-macos (x86_64-apple-darwin)	5m 12s
bindings-windows (i686-pc-windows-msvc, false)	4m 51s
bindings-linux (x86_64-unknown-linux-gnu)	2m 34s
bindings-linux (i686-unknown-linux-gnu)	2m 41s
bindings-linux (x86_64-unknown-linux-musl)	2m 43s
documentation	6m 3s
bindings-linux (arm-unknown-linux-gnueabihf)	3m 0s
bindings-linux (arm-unknown-linux-musleabihf)	2m 53s
guide	1m 13s
features (--no-default-features)	1m 52s
bindings-linux (aarch64-unknown-linux-gnu)	2m 38s
features (--no-default-features --features serialization)	2m 0s
bindings-linux (aarch64-unknown-linux-musl)	2m 53s
bindings-linux (armv7-unknown-linux-gnueabihf)	2m 56s
features (--no-default-features --features serial)	1m 55s
bindings-linux (arm-unknown-linux-gnueabi)	2m 39s
features (--no-default-features --features tls)	2m 7s
linting (stable)	5s
test (ubuntu-latest, stable)	1m 18s
linting (beta)	18s
test (ubuntu-latest, beta)	1m 29s
test (windows-latest, stable)	2m 49s
test (windows-latest, beta)	3m 9s
packaging	3m 9s
release	0s
	1h 20m 36s

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