Rust

read/cfi: add example to UnwindExpression #470

Job	Run time
bench	1m 15s
Build fuzz targets	1m 27s
build (ubuntu-latest, stable)	1m 0s
coverage	1m 4s
build (ubuntu-latest, beta)	50s
cross (i686-unknown-linux-gnu)	1m 10s
build (ubuntu-latest, nightly)	50s
doc	38s
cross (powerpc64-unknown-linux-gnu)	1m 18s
features	2m 47s
msrv	1m 30s
msrv-read	1m 20s
rustfmt	13s
build (stable, macOS-latest)	58s
Run `debug_abbrev` fuzz target	5m 10s
Run `debug_aranges` fuzz target	5m 12s
Run `debug_info` fuzz target	5m 8s
Run `debug_line` fuzz target	5m 9s
Run `eh_frame` fuzz target	5m 13s
Run `eh_frame_hdr` fuzz target	5m 8s
	47m 20s

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