Merge pull request #805 from zcash/check-in-lockfile #260

Job	Run time
Bitrot check	1m 43s
Build target wasm32-unknown-unknown	1m 48s
Test on i686-unknown-linux-gnu	14m 46s
Build target wasm32-wasi	1m 38s
Test on i686-unknown-linux-gnu with beta features	13m 34s
Book tests	1m 21s
Test on i686-unknown-linux-gnu with nightly features	16m 14s
Code coverage	21m 32s
Rustfmt	18s
Intra-doc links	1m 27s
Test on ubuntu-latest	7m 17s
Test on windows-latest	10m 41s
Test on macOS-latest	10m 35s
Test on ubuntu-latest with beta features	7m 21s
Test on windows-latest with beta features	10m 44s
Test on macOS-latest with beta features	8m 3s
Test on ubuntu-latest with nightly features	8m 10s
Test on windows-latest with nightly features	11m 59s
Test on macOS-latest with nightly features	10m 49s
	2h 40m 0s

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