Update to Rust 1.59.0

[iceiix]

https://blog.rust-lang.org/2022/02/24/Rust-1.59.0.html

attempt to fix build failure #717 (comment)

package time v0.3.14 cannot be built because it requires rustc 1.59.0 or newer, while the currently active rustc version is 1.58.1

[iceiix]

warning: single-character string constant used as pattern
   --> src/console/mod.rs:373:61
    |
373 |         let mut file = &record.file().unwrap_or("").replace("\\", "/")[..];
    |                                                             ^^^^ help: try using a `char` instead: `'\\'`
    |
    = note: `#[warn(clippy::single_char_pattern)]` on by default
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern

warning: unneeded late initalization
    --> src/server/mod.rs:1950:17
     |
1950 |                 let action;
     |                 ^^^^^^^^^^^
     |
     = note: `#[warn(clippy::needless_late_init)]` on by default
     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_late_init
help: declare `action` here
     |
1951 |                 let action = match tile_id {
     |                 ++++++++++++
help: remove the assignments from the `match` arms
     |
1953 -                     "Sign" => action = 9,
1953 +                     "Sign" => 9,
     | 
help: add a semicolon after the `match` expression
     |
1956 |                 };
     |                  +

warning: single-character string constant used as pattern
   --> src/ui/logo.rs:102:63
    |
102 |                     text_strings.push(line.to_owned().replace("\r", ""));
    |                                                               ^^^^ help: try using a `char` instead: `'\r'`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern