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: 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 { .. } | 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 { .. } | 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: `match w { .. }` 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 .. = *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: `if let .. = 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()`