rust-clippy/tests/ui/matches.stderr

error: you don't need to add `&` to all patterns
  --> $DIR/matches.rs:20:9
   |
20 | /         match v {
21 | |             &Some(v) => println!("{:?}", v),
22 | |             &None => println!("none"),
23 | |         }
   | |_________^
   |
   = note: `-D clippy::match-ref-pats` implied by `-D warnings`
help: instead of prefixing all patterns with `&`, you can dereference the expression
   |
20 |         match *v {
21 |             Some(v) => println!("{:?}", v),
22 |             None => println!("none"),
   |

error: you don't need to add `&` to all patterns
  --> $DIR/matches.rs:31:5
   |
31 | /     match tup {
32 | |         &(v, 1) => println!("{}", v),
33 | |         _ => println!("none"),
34 | |     }
   | |_____^
help: instead of prefixing all patterns with `&`, you can dereference the expression
   |
31 |     match *tup {
32 |         (v, 1) => println!("{}", v),
   |

error: you don't need to add `&` to both the expression and the patterns
  --> $DIR/matches.rs:37:5
   |
37 | /     match &w {
38 | |         &Some(v) => println!("{:?}", v),
39 | |         &None => println!("none"),
40 | |     }
   | |_____^
help: try
   |
37 |     match w {
38 |         Some(v) => println!("{:?}", v),
39 |         None => println!("none"),
   |

error: you don't need to add `&` to all patterns
  --> $DIR/matches.rs:48:5
   |
48 | /     if let &None = a {
49 | |         println!("none");
50 | |     }
   | |_____^
help: instead of prefixing all patterns with `&`, you can dereference the expression
   |
48 |     if let None = *a {
   |            ^^^^   ^^

error: you don't need to add `&` to both the expression and the patterns
  --> $DIR/matches.rs:53:5
   |
53 | /     if let &None = &b {
54 | |         println!("none");
55 | |     }
   | |_____^
help: try
   |
53 |     if let None = b {
   |            ^^^^   ^

error: Err(_) will match all errors, maybe not a good idea
  --> $DIR/matches.rs:64:9
   |
64 |         Err(_) => panic!("err"),
   |         ^^^^^^
   |
   = note: `-D clippy::match-wild-err-arm` implied by `-D warnings`
   = note: to remove this warning, match each error separately or use unreachable macro

error: this `match` has identical arm bodies
  --> $DIR/matches.rs:63:18
   |
63 |         Ok(_) => println!("ok"),
   |                  ^^^^^^^^^^^^^^
   |
   = note: `-D clippy::match-same-arms` implied by `-D warnings`
note: same as this
  --> $DIR/matches.rs:62:18
   |
62 |         Ok(3) => println!("ok"),
   |                  ^^^^^^^^^^^^^^
note: consider refactoring into `Ok(3) | Ok(_)`
  --> $DIR/matches.rs:62:18
   |
62 |         Ok(3) => println!("ok"),
   |                  ^^^^^^^^^^^^^^
   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error: Err(_) will match all errors, maybe not a good idea
  --> $DIR/matches.rs:70:9
   |
70 |         Err(_) => panic!(),
   |         ^^^^^^
   |
   = note: to remove this warning, match each error separately or use unreachable macro

error: this `match` has identical arm bodies
  --> $DIR/matches.rs:69:18
   |
69 |         Ok(_) => println!("ok"),
   |                  ^^^^^^^^^^^^^^
   |
note: same as this
  --> $DIR/matches.rs:68:18
   |
68 |         Ok(3) => println!("ok"),
   |                  ^^^^^^^^^^^^^^
note: consider refactoring into `Ok(3) | Ok(_)`
  --> $DIR/matches.rs:68:18
   |
68 |         Ok(3) => println!("ok"),
   |                  ^^^^^^^^^^^^^^
   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error: Err(_) will match all errors, maybe not a good idea
  --> $DIR/matches.rs:76:9
   |
76 |         Err(_) => {
   |         ^^^^^^
   |
   = note: to remove this warning, match each error separately or use unreachable macro

error: this `match` has identical arm bodies
  --> $DIR/matches.rs:75:18
   |
75 |         Ok(_) => println!("ok"),
   |                  ^^^^^^^^^^^^^^
   |
note: same as this
  --> $DIR/matches.rs:74:18
   |
74 |         Ok(3) => println!("ok"),
   |                  ^^^^^^^^^^^^^^
note: consider refactoring into `Ok(3) | Ok(_)`
  --> $DIR/matches.rs:74:18
   |
74 |         Ok(3) => println!("ok"),
   |                  ^^^^^^^^^^^^^^
   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error: this `match` has identical arm bodies
  --> $DIR/matches.rs:84:18
   |
84 |         Ok(_) => println!("ok"),
   |                  ^^^^^^^^^^^^^^
   |
note: same as this
  --> $DIR/matches.rs:83:18
   |
83 |         Ok(3) => println!("ok"),
   |                  ^^^^^^^^^^^^^^
note: consider refactoring into `Ok(3) | Ok(_)`
  --> $DIR/matches.rs:83:18
   |
83 |         Ok(3) => println!("ok"),
   |                  ^^^^^^^^^^^^^^
   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error: this `match` has identical arm bodies
  --> $DIR/matches.rs:91:18
   |
91 |         Ok(_) => println!("ok"),
   |                  ^^^^^^^^^^^^^^
   |
note: same as this
  --> $DIR/matches.rs:90:18
   |
90 |         Ok(3) => println!("ok"),
   |                  ^^^^^^^^^^^^^^
note: consider refactoring into `Ok(3) | Ok(_)`
  --> $DIR/matches.rs:90:18
   |
90 |         Ok(3) => println!("ok"),
   |                  ^^^^^^^^^^^^^^
   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error: this `match` has identical arm bodies
  --> $DIR/matches.rs:97:18
   |
97 |         Ok(_) => println!("ok"),
   |                  ^^^^^^^^^^^^^^
   |
note: same as this
  --> $DIR/matches.rs:96:18
   |
96 |         Ok(3) => println!("ok"),
   |                  ^^^^^^^^^^^^^^
note: consider refactoring into `Ok(3) | Ok(_)`
  --> $DIR/matches.rs:96:18
   |
96 |         Ok(3) => println!("ok"),
   |                  ^^^^^^^^^^^^^^
   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error: this `match` has identical arm bodies
   --> $DIR/matches.rs:103:18
    |
103 |         Ok(_) => println!("ok"),
    |                  ^^^^^^^^^^^^^^
    |
note: same as this
   --> $DIR/matches.rs:102:18
    |
102 |         Ok(3) => println!("ok"),
    |                  ^^^^^^^^^^^^^^
note: consider refactoring into `Ok(3) | Ok(_)`
   --> $DIR/matches.rs:102:18
    |
102 |         Ok(3) => println!("ok"),
    |                  ^^^^^^^^^^^^^^
    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error: this `match` has identical arm bodies
   --> $DIR/matches.rs:126:29
    |
126 |         (Ok(_), Some(x)) => println!("ok {}", x),
    |                             ^^^^^^^^^^^^^^^^^^^^
    |
note: same as this
   --> $DIR/matches.rs:125:29
    |
125 |         (Ok(x), Some(_)) => println!("ok {}", x),
    |                             ^^^^^^^^^^^^^^^^^^^^
note: consider refactoring into `(Ok(x), Some(_)) | (Ok(_), Some(x))`
   --> $DIR/matches.rs:125:29
    |
125 |         (Ok(x), Some(_)) => println!("ok {}", x),
    |                             ^^^^^^^^^^^^^^^^^^^^
    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error: this `match` has identical arm bodies
   --> $DIR/matches.rs:141:18
    |
141 |         Ok(_) => println!("ok"),
    |                  ^^^^^^^^^^^^^^
    |
note: same as this
   --> $DIR/matches.rs:140:18
    |
140 |         Ok(3) => println!("ok"),
    |                  ^^^^^^^^^^^^^^
note: consider refactoring into `Ok(3) | Ok(_)`
   --> $DIR/matches.rs:140:18
    |
140 |         Ok(3) => println!("ok"),
    |                  ^^^^^^^^^^^^^^
    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error: use as_ref() instead
   --> $DIR/matches.rs:150:33
    |
150 |       let borrowed: Option<&()> = match owned {
    |  _________________________________^
151 | |         None => None,
152 | |         Some(ref v) => Some(v),
153 | |     };
    | |_____^ help: try this: `owned.as_ref()`
    |
    = note: `-D clippy::match-as-ref` implied by `-D warnings`

error: use as_mut() instead
   --> $DIR/matches.rs:156:39
    |
156 |       let borrow_mut: Option<&mut ()> = match mut_owned {
    |  _______________________________________^
157 | |         None => None,
158 | |         Some(ref mut v) => Some(v),
159 | |     };
    | |_____^ help: try this: `mut_owned.as_mut()`

error: aborting due to 19 previous errors