Prepare 0.4.38 #3420

Job	Run time
alternative_targets (ubuntu-latest, wasm32-unknown-emscripten)	24s
check-docs	22s
cross-tests (ubuntu-latest)	1m 41s
alternative_targets (ubuntu-latest, aarch64-apple-ios)	15s
cross-targets (x86_64-unknown-illumos)	1m 10s
alternative_targets (ubuntu-latest, aarch64-linux-android)	16s
features_check (ubuntu-latest)	3m 43s
no_std (ubuntu-latest, thumbv6m-none-eabi)	17s
rust_msrv (ubuntu-latest)	53s
no_std (ubuntu-latest, x86_64-fortanix-unknown-sgx)	17s
rust_versions (ubuntu-latest, stable)	1m 6s
test_wasi (ubuntu-latest, wasm32-wasi)	32s
rust_versions (ubuntu-latest, beta)	1m 3s
test_wasm (ubuntu-latest)	27s
rust_versions (ubuntu-latest, nightly)	1m 10s
timezones (ubuntu-latest, ACST-9:30)	1m 18s
timezones (ubuntu-latest, EST4)	1m 24s
timezones (ubuntu-latest, UTC0)	1m 24s
timezones (ubuntu-latest, Asia/Katmandu)	1m 21s
timezones (macos-latest, ACST-9:30)	56s
timezones (macos-latest, EST4)	1m 43s
timezones (macos-latest, UTC0)	51s
timezones (macos-latest, Asia/Katmandu)	1m 45s
timezones (windows-latest, ACST-9:30)	1m 33s
timezones (windows-latest, EST4)	1m 29s
timezones (windows-latest, UTC0)	1m 27s
timezones (windows-latest, Asia/Katmandu)	1m 21s
	30m 8s

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