Preserve backtraces across secondary error events #3753

Job	Run time
check-git-rev-deps	14s
cackle	1m 50s
cargo-deny (advisories)	5m 1s
build-and-test (msrv, ubuntu-latest, wasm32-unknown-unknown, false)	3m 16s
build-and-test (msrv, ubuntu-latest, x86_64-unknown-linux-gnu, true)	11m 26s
cargo-deny (bans licenses sources)	5m 10s
fmt	16s
publish-dry-run	0s
build-and-test (latest, ubuntu-latest, wasm32-unknown-unknown, false)	3m 10s
build-and-test (latest, ubuntu-latest, x86_64-unknown-linux-gnu, true)	10m 49s
rust-analyzer-compat	2m 28s
semver-checks	3m 48s
complete	1s
	47m 29s

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