When `sq verify` fails to verify a signature, it outputs a Rust panic message
$ sq verify --signer-cert tomjon-cert.pgp hello.pgp
thread 'main' panicked at 'It is an error to consume more than data returns: Custom { kind: InvalidInput, error: "Bad CRC sum." }', openpgp/src/parse.rs:4988:18
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
It would be better to output a user-oriented error message.