Merge pull request #1516 from zcash/release/zcash_protocol-0.3.0 #5739

Job	Run time
Latest build on ubuntu-latest	1m 58s
Check ZFuture build on Linux	2m 8s
Latest build on windows-latest	4m 22s
Check ZFuture build on macOS	1m 28s
Bitrot check	1m 46s
Latest build on macOS-latest	1m 42s
Check ZFuture build on Windows	5m 21s
Build target wasm32-wasi	55s
Clippy (beta)	13s
Clippy (MSRV)	1m 24s
Test on Linux	9m 18s
Test Orchard on Linux	10m 57s
Test NU6 on Linux	9m 7s
Code coverage	19m 49s
Test on macOS	10m 8s
Test Orchard on macOS	12m 47s
Test on Windows	15m 29s
Intra-doc links	2m 0s
Test Orchard on Windows	18m 48s
Test NU6 on Windows	15m 28s
Rustfmt	13s
protobuf consistency	1m 12s
UUID validity	3s
	2h 26m 36s

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