Rust

changelog.txt: update. #1176

Job	Run time
build_bin_spec (nightly)	58s
build_bin_spec (beta)	1m 7s
build_lib_test (nightly)	56s
build_bin_spec (stable)	58s
build_bin_spec ($MSRV)	2m 20s
build_lib_test (beta)	1m 9s
build_lib_test (stable)	1m 0s
build_wasm (nightly)	47s
build_lib_test ($MSRV)	2m 42s
no_features_build_test (nightly)	27s
build_wasm (beta)	54s
no_features_build_test (beta)	25s
build_wasm (stable)	42s
no_features_build_test (stable)	24s
build_wasm ($MSRV)	2m 9s
no_features_build_test ($MSRV)	1m 38s
clippy_format	1m 51s
lockfile	49s
	21m 16s

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