New comment by ericonr on void-packages repository

https://github.com/void-linux/void-packages/pull/34291#issuecomment-981296209

Comment:
```
   Compiling git-delta v0.10.2 (/builddir/delta-0.10.2)
error[E0277]: the trait bound `std::collections::HashSet<std::string::String>: From<[_; 0]>` is not satisfied
   --> src/utils/process.rs:689:46
    |
689 |             Some(CallingProcess::GitGrep(([].into(), [].into())))
    |                                              ^^^^ the trait `From<[_; 0]>` is not implemented for `std::collections::HashSet<std::string::String>`
    |
    = note: required because of the requirements on the impl of `Into<std::collections::HashSet<std::string::String>>` for `[_; 0]`

error[E0277]: the trait bound `std::collections::HashSet<std::string::String>: From<[_; 0]>` is not satisfied
   --> src/utils/process.rs:689:42
    |
689 |             Some(CallingProcess::GitGrep(([].into(), [].into())))
    |                                          ^^^^^^^^^^^^^^^^^^^^^^ the trait `From<[_; 0]>` is not implemented for `std::collections::HashSet<std::string::String>`
    |
    = note: required because of the requirements on the impl of `Into<std::collections::HashSet<std::string::String>>` for `[_; 0]`

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0277`.
error: could not compile `git-delta`

To learn more, run the command again with --verbose.
=> ERROR: delta-0.10.2_1: do_check: '${make_cmd} test --release --target ${RUST_TARGET} ${configure_args} 
```

tests fail to compile, do you think they are depending on new Rust features we don't have?