error[E0308]: mismatched types
  --> $DIR/compatible-variants.rs:13:5
   |
LL |   fn a() -> Option<()> {
   |             ---------- expected `Option<()>` because of return type
LL | /     while false {
LL | |
LL | |         f();
LL | |     }
   | |_____^ expected `Option<()>`, found `()`
   |
   = note:   expected enum `Option<()>`
           found unit type `()`
   = note: `while` loops evaluate to unit type `()`
help: try adding an expression at the end of the block
   |
LL ~     }
LL +     None
   |
LL ~     }
LL +     Some(())
   |

error[E0308]: mismatched types
  --> $DIR/compatible-variants.rs:21:5
   |
LL | fn b() -> Result<(), ()> {
   |           -------------- expected `Result<(), ()>` because of return type
LL |     f()
   |     ^^^ expected `Result<(), ()>`, found `()`
   |
   = note:   expected enum `Result<(), ()>`
           found unit type `()`
help: try adding an expression at the end of the block
   |
LL ~     f();
LL +     Ok(())
   |

error[E0308]: mismatched types
  --> $DIR/compatible-variants.rs:27:5
   |
LL |   fn c() -> Option<()> {
   |             ---------- expected `Option<()>` because of return type
LL | /     for _ in [1, 2] {
LL | |
LL | |         f();
LL | |     }
   | |_____^ expected `Option<()>`, found `()`
   |
   = note:   expected enum `Option<()>`
           found unit type `()`
   = note: `for` loops evaluate to unit type `()`
help: try adding an expression at the end of the block
   |
LL ~     }
LL +     None
   |
LL ~     }
LL +     Some(())
   |

error[E0308]: `?` operator has incompatible types
  --> $DIR/compatible-variants.rs:35:5
   |
LL | fn d() -> Option<()> {
   |           ---------- expected `Option<()>` because of return type
LL |     c()?
   |     ^^^^ expected `Option<()>`, found `()`
   |
   = note: `?` operator cannot convert from `()` to `Option<()>`
   = note:   expected enum `Option<()>`
           found unit type `()`
help: try removing this `?`
   |
LL -     c()?
LL +     c()
   |
help: try adding an expression at the end of the block
   |
LL ~     c()?;
LL +     None
   |
LL ~     c()?;
LL +     Some(())
   |

error[E0308]: mismatched types
  --> $DIR/compatible-variants.rs:42:25
   |
LL |     let _: Option<()> = while false {};
   |            ----------   ^^^^^^^^^^^^^^ expected `Option<()>`, found `()`
   |            |
   |            expected due to this
   |
   = note:   expected enum `Option<()>`
           found unit type `()`
help: try wrapping the expression in `Some`
   |
LL |     let _: Option<()> = Some(while false {});
   |                         +++++              +

error[E0308]: mismatched types
  --> $DIR/compatible-variants.rs:46:9
   |
LL |         while false {}
   |         ^^^^^^^^^^^^^^ expected `Option<()>`, found `()`
   |
   = note:   expected enum `Option<()>`
           found unit type `()`
   = note: `while` loops evaluate to unit type `()`
help: try adding an expression at the end of the block
   |
LL ~         while false {}
LL +         None
   |
LL ~         while false {}
LL +         Some(())
   |

error[E0308]: mismatched types
  --> $DIR/compatible-variants.rs:50:31
   |
LL |     let _: Result<i32, i32> = 1;
   |            ----------------   ^ expected `Result<i32, i32>`, found integer
   |            |
   |            expected due to this
   |
   = note: expected enum `Result<i32, i32>`
              found type `{integer}`
help: try wrapping the expression in a variant of `Result`
   |
LL |     let _: Result<i32, i32> = Ok(1);
   |                               +++ +
LL |     let _: Result<i32, i32> = Err(1);
   |                               ++++ +

error[E0308]: mismatched types
  --> $DIR/compatible-variants.rs:53:26
   |
LL |     let _: Option<i32> = 1;
   |            -----------   ^ expected `Option<i32>`, found integer
   |            |
   |            expected due to this
   |
   = note: expected enum `Option<i32>`
              found type `{integer}`
help: try wrapping the expression in `Some`
   |
LL |     let _: Option<i32> = Some(1);
   |                          +++++ +

error[E0308]: mismatched types
  --> $DIR/compatible-variants.rs:56:28
   |
LL |     let _: Hey<i32, i32> = 1;
   |            -------------   ^ expected `Hey<i32, i32>`, found integer
   |            |
   |            expected due to this
   |
   = note: expected enum `Hey<i32, i32>`
              found type `{integer}`
help: try wrapping the expression in a variant of `Hey`
   |
LL |     let _: Hey<i32, i32> = Hey::A(1);
   |                            +++++++ +
LL |     let _: Hey<i32, i32> = Hey::B(1);
   |                            +++++++ +

error[E0308]: mismatched types
  --> $DIR/compatible-variants.rs:59:29
   |
LL |     let _: Hey<i32, bool> = false;
   |            --------------   ^^^^^ expected `Hey<i32, bool>`, found `bool`
   |            |
   |            expected due to this
   |
   = note: expected enum `Hey<i32, bool>`
              found type `bool`
help: try wrapping the expression in `Hey::B`
   |
LL |     let _: Hey<i32, bool> = Hey::B(false);
   |                             +++++++     +

error[E0308]: mismatched types
  --> $DIR/compatible-variants.rs:63:19
   |
LL |     let _ = Foo { bar };
   |                   ^^^ expected `Option<i32>`, found `i32`
   |
   = note: expected enum `Option<i32>`
              found type `i32`
help: try wrapping the expression in `Some`
   |
LL |     let _ = Foo { bar: Some(bar) };
   |                   ++++++++++   +

error[E0308]: mismatched types
  --> $DIR/compatible-variants.rs:80:16
   |
LL |     let a: A = B::Fst;
   |            -   ^^^^^^ expected `A`, found `B`
   |            |
   |            expected due to this
   |
help: try wrapping the expression in `A::B`
   |
LL |     let a: A = A::B { b: B::Fst };
   |                +++++++++        +

error[E0308]: mismatched types
  --> $DIR/compatible-variants.rs:86:17
   |
LL |     let a: A2 = B::Fst;
   |            --   ^^^^^^ expected `A2`, found `B`
   |            |
   |            expected due to this
   |
help: try wrapping the expression in `A2`
   |
LL |     let a: A2 = A2(B::Fst);
   |                 +++      +

error: aborting due to 13 previous errors

For more information about this error, try `rustc --explain E0308`.