error: expected expression, found `let` statement
  --> $DIR/missing-let.rs:5:8
   |
LL |     if let Some(_) = x
   |        ^^^^^^^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
help: you might have meant to continue the let-chain
   |
LL |         && let Some(x) = x
   |            +++
help: you might have meant to compare for equality
   |
LL |         && Some(x) == x
   |                     +

error: expected expression, found `let` statement
  --> $DIR/missing-let.rs:13:9
   |
LL |         let Some(_) = z
   |         ^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions

error: let-chain with missing `let`
  --> $DIR/missing-let.rs:10:8
   |
LL |     if Some(_) = y &&
   |        ^^^^^^^----
   |        |
   |        expected `let` expression, found assignment
...
LL |         let Some(_) = z
   |         --------------- let expression later in the condition
   |
help: add `let` before the expression
   |
LL |     if let Some(_) = y &&
   |        +++

error: aborting due to 3 previous errors