Rust

Bugfix: recover from utreexo nodes hangup #267

Job	Run time
build	3m 34s
cross-testing (stable, ubuntu-latest)	1m 27s
cross-testing (stable, windows-latest)	3m 44s
linting	1m 29s
cross-testing (stable, macos-latest)	4m 0s
cross-testing (nightly, ubuntu-latest)	1m 33s
cross-testing (nightly, windows-latest)	4m 17s
cross-testing (nightly, macos-latest)	3m 20s
cross-testing (1.64, ubuntu-latest)	1m 29s
cross-testing (1.64, windows-latest)	4m 13s
cross-testing (1.64, macos-latest)	3m 36s
	32m 42s

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