refactor: avoid unwrap examples #3147

Job	Run time
Verify hyper.h is up to date	23s
semver	17s
Check Style	7s
minimal-versions	35s
Test with Miri	2m 14s
Check MSRV	2m 11s
Test C API (FFI)	34s
Test cargo-c support (FFI)	24s
udeps	27s
features	34s
Test stable on ubuntu-latest	1m 14s
Test stable on macOS-latest	1m 25s
Test beta on windows-latest	2m 2s
Test nightly on windows-latest	2m 26s
Test nightly on macOS-latest	1m 54s
Test beta on macOS-latest	1m 31s
Test stable on windows-latest	2m 11s
Test nightly on ubuntu-latest	1m 12s
Test beta on ubuntu-latest	59s
Check exposed types	22s
Build docs	21s
CI is green	3s
	23m 26s

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