Avoid unnecessary String allocations

[mina86]

No description provided.

[mina86]

Not sure what the issue with CI is. The error is in clap_lex dependency which shouldn’t be relevant to this PR:

Error:    --> /usr/local/cargo/registry/src/index.crates.io-6f17d22bba15001f/clap_lex-0.7.0/src/ext.rs:186:26
    |
186 |         let bytes = self.as_encoded_bytes();
    |                          ^^^^^^^^^^^^^^^^ method not found in `&OsStr`

[dhruvja]

i think the CI seems to be fixed.