rust-clippy/tests/ui/matches.stderr

error: you don't need to add `&` to all patterns
  --> $DIR/matches.rs:11:9
   |
LL | /         match v {
LL | |             &Some(v) => println!("{:?}", v),
LL | |             &None => println!("none"),
LL | |         }
   | |_________^
   |
   = note: `-D clippy::match-ref-pats` implied by `-D warnings`
help: instead of prefixing all patterns with `&`, you can dereference the expression
   |
LL |         match *v {
LL |             Some(v) => println!("{:?}", v),
LL |             None => println!("none"),
   |

error: you don't need to add `&` to all patterns
  --> $DIR/matches.rs:22:5
   |
LL | /     match tup {
LL | |         &(v, 1) => println!("{}", v),
LL | |         _ => println!("none"),
LL | |     }
   | |_____^
help: instead of prefixing all patterns with `&`, you can dereference the expression
   |
LL |     match *tup {
LL |         (v, 1) => println!("{}", v),
   |

error: you don't need to add `&` to both the expression and the patterns
  --> $DIR/matches.rs:28:5
   |
LL | /     match &w {
LL | |         &Some(v) => println!("{:?}", v),
LL | |         &None => println!("none"),
LL | |     }
   | |_____^
help: try
   |
LL |     match w {
LL |         Some(v) => println!("{:?}", v),
LL |         None => println!("none"),
   |

error: you don't need to add `&` to all patterns
  --> $DIR/matches.rs:39:5
   |
LL | /     if let &None = a {
LL | |         println!("none");
LL | |     }
   | |_____^
help: instead of prefixing all patterns with `&`, you can dereference the expression
   |
LL |     if let None = *a {
   |            ^^^^   ^^

error: you don't need to add `&` to both the expression and the patterns
  --> $DIR/matches.rs:44:5
   |
LL | /     if let &None = &b {
LL | |         println!("none");
LL | |     }
   | |_____^
help: try
   |
LL |     if let None = b {
   |            ^^^^   ^

error: Err(_) will match all errors, maybe not a good idea
  --> $DIR/matches.rs:55:9
   |
LL |         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:54:18
   |
LL |         Ok(_) => println!("ok"),
   |                  ^^^^^^^^^^^^^^
   |
   = note: `-D clippy::match-same-arms` implied by `-D warnings`
note: same as this
  --> $DIR/matches.rs:53:18
   |
LL |         Ok(3) => println!("ok"),
   |                  ^^^^^^^^^^^^^^
note: consider refactoring into `Ok(3) | Ok(_)`
  --> $DIR/matches.rs:53:18
   |
LL |         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:61:9
   |
LL |         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:60:18
   |
LL |         Ok(_) => println!("ok"),
   |                  ^^^^^^^^^^^^^^
   |
note: same as this
  --> $DIR/matches.rs:59:18
   |
LL |         Ok(3) => println!("ok"),
   |                  ^^^^^^^^^^^^^^
note: consider refactoring into `Ok(3) | Ok(_)`
  --> $DIR/matches.rs:59:18
   |
LL |         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:67:9
   |
LL |         Err(_) => {
   |         ^^^^^^
   |
   = note: to remove this warning, match each error separately or use unreachable macro

error: this `match` has identical arm bodies
  --> $DIR/matches.rs:66:18
   |
LL |         Ok(_) => println!("ok"),
   |                  ^^^^^^^^^^^^^^
   |
note: same as this
  --> $DIR/matches.rs:65:18
   |
LL |         Ok(3) => println!("ok"),
   |                  ^^^^^^^^^^^^^^
note: consider refactoring into `Ok(3) | Ok(_)`
  --> $DIR/matches.rs:65:18
   |
LL |         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:75:18
   |
LL |         Ok(_) => println!("ok"),
   |                  ^^^^^^^^^^^^^^
   |
note: same as this
  --> $DIR/matches.rs:74:18
   |
LL |         Ok(3) => println!("ok"),
   |                  ^^^^^^^^^^^^^^
note: consider refactoring into `Ok(3) | Ok(_)`
  --> $DIR/matches.rs:74:18
   |
LL |         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:82:18
   |
LL |         Ok(_) => println!("ok"),
   |                  ^^^^^^^^^^^^^^
   |
note: same as this
  --> $DIR/matches.rs:81:18
   |
LL |         Ok(3) => println!("ok"),
   |                  ^^^^^^^^^^^^^^
note: consider refactoring into `Ok(3) | Ok(_)`
  --> $DIR/matches.rs:81:18
   |
LL |         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:88:18
   |
LL |         Ok(_) => println!("ok"),
   |                  ^^^^^^^^^^^^^^
   |
note: same as this
  --> $DIR/matches.rs:87:18
   |
LL |         Ok(3) => println!("ok"),
   |                  ^^^^^^^^^^^^^^
note: consider refactoring into `Ok(3) | Ok(_)`
  --> $DIR/matches.rs:87:18
   |
LL |         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:94:18
   |
LL |         Ok(_) => println!("ok"),
   |                  ^^^^^^^^^^^^^^
   |
note: same as this
  --> $DIR/matches.rs:93:18
   |
LL |         Ok(3) => println!("ok"),
   |                  ^^^^^^^^^^^^^^
note: consider refactoring into `Ok(3) | Ok(_)`
  --> $DIR/matches.rs:93:18
   |
LL |         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:117:29
   |
LL |         (Ok(_), Some(x)) => println!("ok {}", x),
   |                             ^^^^^^^^^^^^^^^^^^^^
   |
note: same as this
  --> $DIR/matches.rs:116:29
   |
LL |         (Ok(x), Some(_)) => println!("ok {}", x),
   |                             ^^^^^^^^^^^^^^^^^^^^
note: consider refactoring into `(Ok(x), Some(_)) | (Ok(_), Some(x))`
  --> $DIR/matches.rs:116:29
   |
LL |         (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:132:18
   |
LL |         Ok(_) => println!("ok"),
   |                  ^^^^^^^^^^^^^^
   |
note: same as this
  --> $DIR/matches.rs:131:18
   |
LL |         Ok(3) => println!("ok"),
   |                  ^^^^^^^^^^^^^^
note: consider refactoring into `Ok(3) | Ok(_)`
  --> $DIR/matches.rs:131:18
   |
LL |         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:141:33
   |
LL |       let borrowed: Option<&()> = match owned {
   |  _________________________________^
LL | |         None => None,
LL | |         Some(ref v) => Some(v),
LL | |     };
   | |_____^ help: try this: `owned.as_ref()`
   |
   = note: `-D clippy::match-as-ref` implied by `-D warnings`

error: use as_mut() instead
  --> $DIR/matches.rs:147:39
   |
LL |       let borrow_mut: Option<&mut ()> = match mut_owned {
   |  _______________________________________^
LL | |         None => None,
LL | |         Some(ref mut v) => Some(v),
LL | |     };
   | |_____^ help: try this: `mut_owned.as_mut()`

error: you don't need to add `&` to all patterns
  --> $DIR/matches.rs:174:5
   |
LL | /     match foo_variant!(0) {
LL | |         &Foo::A => println!("A"),
LL | |         _ => println!("Wild"),
LL | |     }
   | |_____^
help: instead of prefixing all patterns with `&`, you can dereference the expression
   |
LL |     match *foo_variant!(0) {
LL |         Foo::A => println!("A"),
   |

error: aborting due to 20 previous errors