error: expected identifier, found `1234test` --> $DIR/binding-name-starting-with-number.rs:1:4 | LL | fn 1234test() { | ^^^^^^^^ expected identifier | help: identifiers cannot start with a number --> $DIR/binding-name-starting-with-number.rs:1:4 | LL | fn 1234test() { | ^^^^ error: expected identifier, found `23name` --> $DIR/binding-name-starting-with-number.rs:9:9 | LL | let 23name = 123; | ^^^^^^ expected identifier | help: identifiers cannot start with a number --> $DIR/binding-name-starting-with-number.rs:9:9 | LL | let 23name = 123; | ^^ error: expected identifier, found `2x` --> $DIR/binding-name-starting-with-number.rs:13:9 | LL | let 2x: i32 = 123; | ^^ expected identifier | help: identifiers cannot start with a number --> $DIR/binding-name-starting-with-number.rs:13:9 | LL | let 2x: i32 = 123; | ^ error: expected identifier, found `1x` --> $DIR/binding-name-starting-with-number.rs:17:9 | LL | let 1x = 123; | ^^ expected identifier | help: identifiers cannot start with a number --> $DIR/binding-name-starting-with-number.rs:17:9 | LL | let 1x = 123; | ^ error[E0308]: mismatched types --> $DIR/binding-name-starting-with-number.rs:5:12 | LL | if let 2e1 = 123 { | ^^^ --- this expression has type `{integer}` | | | expected integer, found floating-point number error: aborting due to 5 previous errors For more information about this error, try `rustc --explain E0308`.