struct Algorithms<'a>(&'a Vec<String>);
impl<'a> fmt::Display for Algorithms<'a> {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        match &self.0[..] {
            &[] => f.write_str("<default>"),
            &[one] => f.write_str(&one),
            &[first, ..more] => {
                f.write_str(&first)?;
                for rec in more {
                    write!(f, ", then {}", rec)?;
                }
                Ok(())
            },
        }
    }
}

   Compiling zram-generator v1.1.2 (/home/nabijaczleweli/code/systemd-zram-generator)
error[E0425]: cannot find value `more` in this scope
   --> src/config.rs:205:24
    |
205 |             &[first, ..more] => {
    |                        ^^^^ not found in this scope
    |
help: if you meant to collect the rest of the slice in `more`, use the at operator
    |
205 |             &[first, more @ ..] => {
    |                      ~~~~~~~~~

   Compiling zram-generator v1.1.2 (/home/nabijaczleweli/code/systemd-zram-generator)
error[E0277]: the size for values of type `[String]` cannot be known at compilation time
   --> src/config.rs:205:22
    |
205 |             &[first, more @ ..] => {
    |                      ^^^^^^^^^ doesn't have a size known at compile-time
    |
    = help: the trait `Sized` is not implemented for `[String]`
    = note: all local variables must have a statically known size
    = help: unsized locals are gated as an unstable feature

error: `..` patterns are not allowed here
   --> src/config.rs:205:30
    |
205 |             &[first, &more @ ..] => {
    |                              ^^
    |
    = note: only allowed in tuple, tuple struct, and slice patterns