error: called `map(f)` on an `Option` value where `f` is a closure that returns the unit type `()`
  --> src/main.rs:47:13
   |
47 | //             the_match.map(|it| {
48 | ||                 required.insert(it.to_string());
49 | ||                 if version.default.unwrap_or(false) {
50 | ||                     default = Some(it.to_string());
51 | ||                 }
52 | ||             });
   | ||______________^- help: try: `if let Some(it) = the_match { ... }`
   |  |______________|
   | 
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#option_map_unit_fn

error: called `map(f)` on an `Option` value where `f` is a closure that returns the unit type `()`
  --> src/sdkman/candidate.rs:59:21
   |
59 | /                     line.split_whitespace()
60 | |                         .filter(|word| *word != "*" && *word != ">")
61 | |                         .last()
62 | |                         .map(|word| versions.push(word.to_string()));
   | |____________________________________________________________________^
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#option_map_unit_fn
   = note: `-D clippy::option-map-unit-fn` implied by `-D warnings`
   = help: to override `-D warnings` add `#[allow(clippy::option_map_unit_fn)]`
help: try
   |
59 ~                     if let Some(word) = line.split_whitespace()
60 +                         .filter(|word| *word != "*" && *word != ">")
61 +                         .last() { versions.push(word.to_string()) }
   |

error: this expression can be written more simply using `.retain()`
  --> src/rules/mod.rs:45:13
   |
45 | /             matches = matches
46 | |                 .into_iter()
47 | |                 .filter(|it| !exclude_pattern.is_match(it))
48 | |                 .collect();
   | |__________________________^ help: consider calling `.retain()` instead: `matches.retain(|it| !exclude_pattern.is_match(it))`
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_retain
   = note: `-D clippy::manual-retain` implied by `-D warnings`
   = help: to override `-D warnings` add `#[allow(clippy::manual_retain)]`

error: use of `expect` followed by a function call
  --> src/rules/mod.rs:44:18
   |
44 |                 .expect(format!("Invalid regex for {}: {}", name, exclude.join("|")).as_str());
   |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `unwrap_or_else(|_| panic!("Invalid regex for {}: {}", name, exclude.join("|")))`
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#expect_fun_call

error: use of `expect` followed by a function call
  --> src/rules/mod.rs:35:14
   |
35 |             .expect(format!("Invalid regex for {}: {}", name, self.pattern).as_str());
   |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `unwrap_or_else(|_| panic!("Invalid regex for {}: {}", name, self.pattern))`
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#expect_fun_call
   = note: `-D clippy::expect-fun-call` implied by `-D warnings`
   = help: to override `-D warnings` add `#[allow(clippy::expect_fun_call)]`