error: this `if` statement can be collapsed
  --> $DIR/collapsible_if.rs:9:5
   |
LL | /     if x == "hello" {
LL | |         if y == "world" {
LL | |             println!("Hello world!");
LL | |         }
LL | |     }
   | |_____^
   |
   = note: `-D clippy::collapsible-if` implied by `-D warnings`
help: collapse nested if block
   |
LL ~     if x == "hello" && y == "world" {
LL +         println!("Hello world!");
LL +     }
   |

error: this `if` statement can be collapsed
  --> $DIR/collapsible_if.rs:15:5
   |
LL | /     if x == "hello" || x == "world" {
LL | |         if y == "world" || y == "hello" {
LL | |             println!("Hello world!");
LL | |         }
LL | |     }
   | |_____^
   |
help: collapse nested if block
   |
LL ~     if (x == "hello" || x == "world") && (y == "world" || y == "hello") {
LL +         println!("Hello world!");
LL +     }
   |

error: this `if` statement can be collapsed
  --> $DIR/collapsible_if.rs:21:5
   |
LL | /     if x == "hello" && x == "world" {
LL | |         if y == "world" || y == "hello" {
LL | |             println!("Hello world!");
LL | |         }
LL | |     }
   | |_____^
   |
help: collapse nested if block
   |
LL ~     if x == "hello" && x == "world" && (y == "world" || y == "hello") {
LL +         println!("Hello world!");
LL +     }
   |

error: this `if` statement can be collapsed
  --> $DIR/collapsible_if.rs:27:5
   |
LL | /     if x == "hello" || x == "world" {
LL | |         if y == "world" && y == "hello" {
LL | |             println!("Hello world!");
LL | |         }
LL | |     }
   | |_____^
   |
help: collapse nested if block
   |
LL ~     if (x == "hello" || x == "world") && y == "world" && y == "hello" {
LL +         println!("Hello world!");
LL +     }
   |

error: this `if` statement can be collapsed
  --> $DIR/collapsible_if.rs:33:5
   |
LL | /     if x == "hello" && x == "world" {
LL | |         if y == "world" && y == "hello" {
LL | |             println!("Hello world!");
LL | |         }
LL | |     }
   | |_____^
   |
help: collapse nested if block
   |
LL ~     if x == "hello" && x == "world" && y == "world" && y == "hello" {
LL +         println!("Hello world!");
LL +     }
   |

error: this `if` statement can be collapsed
  --> $DIR/collapsible_if.rs:39:5
   |
LL | /     if 42 == 1337 {
LL | |         if 'a' != 'A' {
LL | |             println!("world!")
LL | |         }
LL | |     }
   | |_____^
   |
help: collapse nested if block
   |
LL ~     if 42 == 1337 && 'a' != 'A' {
LL +         println!("world!")
LL +     }
   |

error: this `if` statement can be collapsed
  --> $DIR/collapsible_if.rs:95:5
   |
LL | /     if x == "hello" {
LL | |         if y == "world" { // Collapsible
LL | |             println!("Hello world!");
LL | |         }
LL | |     }
   | |_____^
   |
help: collapse nested if block
   |
LL ~     if x == "hello" && y == "world" { // Collapsible
LL +         println!("Hello world!");
LL +     }
   |

error: this `if` statement can be collapsed
  --> $DIR/collapsible_if.rs:154:5
   |
LL | /     if matches!(true, true) {
LL | |         if matches!(true, true) {}
LL | |     }
   | |_____^ help: collapse nested if block: `if matches!(true, true) && matches!(true, true) {}`

error: aborting due to 8 previous errors