warning: unneeded late initialization
  --> src/main.rs:85:5
   |
85 |     let log_level: String;
   |     ^^^^^^^^^^^^^^^^^^^^^^
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_late_init
help: declare `log_level` here
   |
86 |     let log_level: String = if matches.get_flag("quiet") {
   |     +++++++++++++++++++++++
help: remove the assignments from the branches
   |
87 ~         String::from("warn")
88 |     } else {
89 ~         String::from("info")
   |
help: add a semicolon after the `if` expression
   |
90 |     };
   |      +

warning: the borrowed expression implements the required traits
   --> src/config.rs:171:79
    |
171 |     let mut file = match OpenOptions::new().write(true).create_new(true).open(&path) {
    |                                                                               ^^^^^ help: change this to: `path`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrows_for_generic_args

warning: unneeded late initialization
   --> src/config.rs:131:9
    |
131 |         let invert: bool;
    |         ^^^^^^^^^^^^^^^^^
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_late_init
help: declare `invert` here
    |
132 |         let invert: bool = match sink.invert {
    |         ++++++++++++++++++
help: remove the assignments from the `match` arms
    |
133 ~             None => false,
134 ~             Some(val) => val,
    |
help: add a semicolon after the `match` expression
    |
135 |         };
    |          +

warning: the borrowed expression implements the required traits
   --> src/config.rs:117:39
    |
117 |             file = match File::create(&path) {
    |                                       ^^^^^ help: change this to: `path`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrows_for_generic_args
    = note: `#[warn(clippy::needless_borrows_for_generic_args)]` on by default

warning: unneeded late initialization
  --> src/config.rs:96:9
   |
96 |         let file: Option<BufWriter<std::fs::File>>;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_late_init
   = note: `#[warn(clippy::needless_late_init)]` on by default
help: declare `file` here
   |
97 |         let file: Option<BufWriter<std::fs::File>> = if sink.file_name == "null" || validate_only {
   |         ++++++++++++++++++++++++++++++++++++++++++++
help: remove the assignments from the branches
   |
98 ~             None
99 |         } else {
 ...
116| 
117~             match File::create(&path) {
118|                 Ok(file) => Some(std::io::BufWriter::new(file)),
 ...
127|                 }
128~             }
   |
help: add a semicolon after the `if` expression
   |
129|         };
   |          +