error: expected identifier, found number literal --> $DIR/issue-104088.rs:6:9 | LL | let 1x = 123; | ^^ identifiers cannot start with a number error: expected identifier, found number literal --> $DIR/issue-104088.rs:11:9 | LL | let 2x: i32 = 123; | ^^ identifiers cannot start with a number error: expected identifier, found number literal --> $DIR/issue-104088.rs:22:9 | LL | let 23name = 123; | ^^^^^^ identifiers cannot start with a number error[E0308]: mismatched types --> $DIR/issue-104088.rs:16:12 | LL | if let 2e1 = 123 { | ^^^ --- this expression has type `{integer}` | | | expected integer, found floating-point number error: aborting due to 4 previous errors For more information about this error, try `rustc --explain E0308`.