|  | error: expected `=`, found `==` | 
|  | --> $DIR/issue-103587.rs:4:20 | 
|  | | | 
|  | LL |     if let Some(_) == x {} | 
|  | |                    ^^ | 
|  | | | 
|  | help: consider using `=` here | 
|  | | | 
|  | LL -     if let Some(_) == x {} | 
|  | LL +     if let Some(_) = x {} | 
|  | | | 
|  |  | 
|  | error[E0308]: mismatched types | 
|  | --> $DIR/issue-103587.rs:7:8 | 
|  | | | 
|  | LL |     if Some(_) = x {} | 
|  | |        ^^^^^^^^^^^ expected `bool`, found `()` | 
|  | | | 
|  | help: consider adding `let` | 
|  | | | 
|  | LL |     if let Some(_) = x {} | 
|  | |        +++ | 
|  |  | 
|  | error[E0308]: mismatched types | 
|  | --> $DIR/issue-103587.rs:10:8 | 
|  | | | 
|  | LL |     if None = x { } | 
|  | |        ^^^^^^^^ expected `bool`, found `()` | 
|  | | | 
|  | help: consider adding `let` | 
|  | | | 
|  | LL |     if let None = x { } | 
|  | |        +++ | 
|  |  | 
|  | error: aborting due to 3 previous errors | 
|  |  | 
|  | For more information about this error, try `rustc --explain E0308`. |