|drop-digest-trait.diff||Avoid the optional digest feature for now.
We just want to build the binary sha1cdsum and ship the standard
sha1collisiondetection crate, and shipping the digest-trait feature
would require an upgrade of a large number of rust-crypto packages.
Once those updates are done, then we can add the digest-trait feature
Also, the structopt "feature" is really just a build-dependency for
the sha1cdsum binary, so we don't want it as an additional feature.
debcargo doesn't seem to have a way to represent this cleanly
(#977491) so we'll just treat it as non-optional for now.