rust-clippy/tests/ui/matches.stderr

error: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
  --> $DIR/matches.rs:26:5
   |
26 | /     match ExprNode::Butterflies {
27 | |         ExprNode::ExprAddrOf => Some(&NODE),
28 | |         _ => { let x = 5; None },
29 | |     }
   | |_____^ help: try this: `if let ExprNode::ExprAddrOf = ExprNode::Butterflies { Some(&NODE) } else { let x = 5; None }`
   |
   = note: `-D single-match-else` implied by `-D warnings`

error: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
  --> $DIR/matches.rs:35:5
   |
35 | /     match x {
36 | |         Some(y) => { println!("{:?}", y); }
37 | |         _ => ()
38 | |     };
   | |_____^ help: try this: `if let Some(y) = x { println!("{:?}", y); }`
   |
   = note: `-D single-match` implied by `-D warnings`

error: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
  --> $DIR/matches.rs:41:5
   |
41 | /     match z {
42 | |         (2...3, 7...9) => dummy(),
43 | |         _ => {}
44 | |     };
   | |_____^ help: try this: `if let (2...3, 7...9) = z { dummy() }`

error: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
  --> $DIR/matches.rs:63:5
   |
63 | /     match x {
64 | |         Some(y) => dummy(),
65 | |         None => ()
66 | |     };
   | |_____^ help: try this: `if let Some(y) = x { dummy() }`

error: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
  --> $DIR/matches.rs:68:5
   |
68 | /     match y {
69 | |         Ok(y) => dummy(),
70 | |         Err(..) => ()
71 | |     };
   | |_____^ help: try this: `if let Ok(y) = y { dummy() }`

error: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
  --> $DIR/matches.rs:75:5
   |
75 | /     match c {
76 | |         Cow::Borrowed(..) => dummy(),
77 | |         Cow::Owned(..) => (),
78 | |     };
   | |_____^ help: try this: `if let Cow::Borrowed(..) = c { dummy() }`

error: this boolean expression can be simplified
   --> $DIR/matches.rs:117:11
    |
117 |     match test && test {
    |           ^^^^^^^^^^^^ help: try: `test`
    |
    = note: `-D nonminimal-bool` implied by `-D warnings`

error: you seem to be trying to match on a boolean expression
  --> $DIR/matches.rs:96:5
   |
96 | /     match test {
97 | |         true => 0,
98 | |         false => 42,
99 | |     };
   | |_____^ help: consider using an if/else expression: `if test { 0 } else { 42 }`
   |
   = note: `-D match-bool` implied by `-D warnings`

error: you seem to be trying to match on a boolean expression
   --> $DIR/matches.rs:102:5
    |
102 | /     match option == 1 {
103 | |         true => 1,
104 | |         false => 0,
105 | |     };
    | |_____^ help: consider using an if/else expression: `if option == 1 { 1 } else { 0 }`

error: you seem to be trying to match on a boolean expression
   --> $DIR/matches.rs:107:5
    |
107 | /     match test {
108 | |         true => (),
109 | |         false => { println!("Noooo!"); }
110 | |     };
    | |_____^ help: consider using an if/else expression: `if !test { println!("Noooo!"); }`

error: you seem to be trying to match on a boolean expression
   --> $DIR/matches.rs:112:5
    |
112 | /     match test {
113 | |         false => { println!("Noooo!"); }
114 | |         _ => (),
115 | |     };
    | |_____^ help: consider using an if/else expression: `if !test { println!("Noooo!"); }`

error: you seem to be trying to match on a boolean expression
   --> $DIR/matches.rs:117:5
    |
117 | /     match test && test {
118 | |         false => { println!("Noooo!"); }
119 | |         _ => (),
120 | |     };
    | |_____^ help: consider using an if/else expression: `if !(test && test) { println!("Noooo!"); }`

error: equal expressions as operands to `&&`
   --> $DIR/matches.rs:117:11
    |
117 |     match test && test {
    |           ^^^^^^^^^^^^
    |
    = note: `-D eq-op` implied by `-D warnings`

error: you seem to be trying to match on a boolean expression
   --> $DIR/matches.rs:122:5
    |
122 | /     match test {
123 | |         false => { println!("Noooo!"); }
124 | |         true => { println!("Yes!"); }
125 | |     };
    | |_____^ help: consider using an if/else expression: `if test { println!("Yes!"); } else { println!("Noooo!"); }`

error: you don't need to add `&` to all patterns
   --> $DIR/matches.rs:138:9
    |
138 | /         match v {
139 | |             &Some(v) => println!("{:?}", v),
140 | |             &None => println!("none"),
141 | |         }
    | |_________^
    |
    = note: `-D match-ref-pats` implied by `-D warnings`
help: instead of prefixing all patterns with `&`, you can dereference the expression
    |
138 |         match *v {
139 |             Some(v) => println!("{:?}", v),
140 |             None => println!("none"),
    |

error: you don't need to add `&` to all patterns
   --> $DIR/matches.rs:148:5
    |
148 | /     match tup {
149 | |         &(v, 1) => println!("{}", v),
150 | |         _ => println!("none"),
151 | |     }
    | |_____^
help: instead of prefixing all patterns with `&`, you can dereference the expression
    |
148 |     match *tup {
149 |         (v, 1) => println!("{}", v),
    |

error: you don't need to add `&` to both the expression and the patterns
   --> $DIR/matches.rs:154:5
    |
154 | /     match &w {
155 | |         &Some(v) => println!("{:?}", v),
156 | |         &None => println!("none"),
157 | |     }
    | |_____^
help: try
    |
154 |     match w {
155 |         Some(v) => println!("{:?}", v),
156 |         None => println!("none"),
    |

error: you don't need to add `&` to all patterns
   --> $DIR/matches.rs:165:5
    |
165 | /     if let &None = a {
166 | |         println!("none");
167 | |     }
    | |_____^
help: instead of prefixing all patterns with `&`, you can dereference the expression
    |
165 |     if let None = *a {
    |

error: you don't need to add `&` to both the expression and the patterns
   --> $DIR/matches.rs:170:5
    |
170 | /     if let &None = &b {
171 | |         println!("none");
172 | |     }
    | |_____^
help: try
    |
170 |     if let None = b {
    |

error: some ranges overlap
   --> $DIR/matches.rs:179:9
    |
179 |         0 ... 10 => println!("0 ... 10"),
    |         ^^^^^^^^
    |
    = note: `-D match-overlapping-arm` implied by `-D warnings`
note: overlaps with this
   --> $DIR/matches.rs:180:9
    |
180 |         0 ... 11 => println!("0 ... 11"),
    |         ^^^^^^^^

error: some ranges overlap
   --> $DIR/matches.rs:185:9
    |
185 |         0 ... 5 => println!("0 ... 5"),
    |         ^^^^^^^
    |
note: overlaps with this
   --> $DIR/matches.rs:187:9
    |
187 |         FOO ... 11 => println!("0 ... 11"),
    |         ^^^^^^^^^^

error: some ranges overlap
   --> $DIR/matches.rs:193:9
    |
193 |         0 ... 5 => println!("0 ... 5"),
    |         ^^^^^^^
    |
note: overlaps with this
   --> $DIR/matches.rs:192:9
    |
192 |         2 => println!("2"),
    |         ^

error: some ranges overlap
   --> $DIR/matches.rs:199:9
    |
199 |         0 ... 2 => println!("0 ... 2"),
    |         ^^^^^^^
    |
note: overlaps with this
   --> $DIR/matches.rs:198:9
    |
198 |         2 => println!("2"),
    |         ^

error: some ranges overlap
   --> $DIR/matches.rs:222:9
    |
222 |         0 .. 11 => println!("0 .. 11"),
    |         ^^^^^^^
    |
note: overlaps with this
   --> $DIR/matches.rs:223:9
    |
223 |         0 ... 11 => println!("0 ... 11"),
    |         ^^^^^^^^

error: Err(_) will match all errors, maybe not a good idea
   --> $DIR/matches.rs:240:9
    |
240 |         Err(_) => panic!("err")
    |         ^^^^^^
    |
    = note: `-D match-wild-err-arm` implied by `-D warnings`
    = note: to remove this warning, match each error seperately or use unreachable macro

error: this `match` has identical arm bodies
   --> $DIR/matches.rs:239:18
    |
239 |         Ok(_) => println!("ok"),
    |                  ^^^^^^^^^^^^^^
    |
    = note: `-D match-same-arms` implied by `-D warnings`
note: same as this
   --> $DIR/matches.rs:238:18
    |
238 |         Ok(3) => println!("ok"),
    |                  ^^^^^^^^^^^^^^
note: consider refactoring into `Ok(3) | Ok(_)`
   --> $DIR/matches.rs:238:18
    |
238 |         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:246:9
    |
246 |         Err(_) => {panic!()}
    |         ^^^^^^
    |
    = note: to remove this warning, match each error seperately or use unreachable macro

error: this `match` has identical arm bodies
   --> $DIR/matches.rs:245:18
    |
245 |         Ok(_) => println!("ok"),
    |                  ^^^^^^^^^^^^^^
    |
note: same as this
   --> $DIR/matches.rs:244:18
    |
244 |         Ok(3) => println!("ok"),
    |                  ^^^^^^^^^^^^^^
note: consider refactoring into `Ok(3) | Ok(_)`
   --> $DIR/matches.rs:244:18
    |
244 |         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:252:9
    |
252 |         Err(_) => {panic!();}
    |         ^^^^^^
    |
    = note: to remove this warning, match each error seperately or use unreachable macro

error: this `match` has identical arm bodies
   --> $DIR/matches.rs:251:18
    |
251 |         Ok(_) => println!("ok"),
    |                  ^^^^^^^^^^^^^^
    |
note: same as this
   --> $DIR/matches.rs:250:18
    |
250 |         Ok(3) => println!("ok"),
    |                  ^^^^^^^^^^^^^^
note: consider refactoring into `Ok(3) | Ok(_)`
   --> $DIR/matches.rs:250:18
    |
250 |         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:258:18
    |
258 |         Ok(_) => println!("ok"),
    |                  ^^^^^^^^^^^^^^
    |
note: same as this
   --> $DIR/matches.rs:257:18
    |
257 |         Ok(3) => println!("ok"),
    |                  ^^^^^^^^^^^^^^
note: consider refactoring into `Ok(3) | Ok(_)`
   --> $DIR/matches.rs:257:18
    |
257 |         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:265:18
    |
265 |         Ok(_) => println!("ok"),
    |                  ^^^^^^^^^^^^^^
    |
note: same as this
   --> $DIR/matches.rs:264:18
    |
264 |         Ok(3) => println!("ok"),
    |                  ^^^^^^^^^^^^^^
note: consider refactoring into `Ok(3) | Ok(_)`
   --> $DIR/matches.rs:264:18
    |
264 |         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:271:18
    |
271 |         Ok(_) => println!("ok"),
    |                  ^^^^^^^^^^^^^^
    |
note: same as this
   --> $DIR/matches.rs:270:18
    |
270 |         Ok(3) => println!("ok"),
    |                  ^^^^^^^^^^^^^^
note: consider refactoring into `Ok(3) | Ok(_)`
   --> $DIR/matches.rs:270:18
    |
270 |         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:277:18
    |
277 |         Ok(_) => println!("ok"),
    |                  ^^^^^^^^^^^^^^
    |
note: same as this
   --> $DIR/matches.rs:276:18
    |
276 |         Ok(3) => println!("ok"),
    |                  ^^^^^^^^^^^^^^
note: consider refactoring into `Ok(3) | Ok(_)`
   --> $DIR/matches.rs:276:18
    |
276 |         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:298:29
    |
298 |         (Ok(_), Some(x)) => println!("ok {}", x),
    |                             ^^^^^^^^^^^^^^^^^^^^
    |
note: same as this
   --> $DIR/matches.rs:297:29
    |
297 |         (Ok(x), Some(_)) => println!("ok {}", x),
    |                             ^^^^^^^^^^^^^^^^^^^^
note: consider refactoring into `(Ok(x), Some(_)) | (Ok(_), Some(x))`
   --> $DIR/matches.rs:297:29
    |
297 |         (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:313:18
    |
313 |         Ok(_) => println!("ok"),
    |                  ^^^^^^^^^^^^^^
    |
note: same as this
   --> $DIR/matches.rs:312:18
    |
312 |         Ok(3) => println!("ok"),
    |                  ^^^^^^^^^^^^^^
note: consider refactoring into `Ok(3) | Ok(_)`
   --> $DIR/matches.rs:312:18
    |
312 |         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:320:33
    |
320 |       let borrowed: Option<&()> = match owned {
    |  _________________________________^
321 | |         None => None,
322 | |         Some(ref v) => Some(v),
323 | |     };
    | |_____^ help: try this: `owned.as_ref()`
    |
    = note: `-D match-as-ref` implied by `-D warnings`

error: use as_mut() instead
   --> $DIR/matches.rs:326:39
    |
326 |       let borrow_mut: Option<&mut ()> = match mut_owned {
    |  _______________________________________^
327 | |         None => None,
328 | |         Some(ref mut v) => Some(v),
329 | |     };
    | |_____^ help: try this: `mut_owned.as_mut()`

error: aborting due to 38 previous errors