error[E0784]: union expressions should have exactly one field
  --> $DIR/union-fields-2.rs:10:13
   |
LL |     let u = U {};
   |             ^

error[E0784]: union expressions should have exactly one field
  --> $DIR/union-fields-2.rs:12:13
   |
LL |     let u = U { a: 0, b: 1 };
   |             ^

error[E0560]: union `U` has no field named `c`
  --> $DIR/union-fields-2.rs:13:29
   |
LL |     let u = U { a: 0, b: 1, c: 2 };
   |                             ^ `U` does not have this field
   |
   = note: available fields are: `a`, `b`

error[E0784]: union expressions should have exactly one field
  --> $DIR/union-fields-2.rs:13:13
   |
LL |     let u = U { a: 0, b: 1, c: 2 };
   |             ^

error[E0784]: union expressions should have exactly one field
  --> $DIR/union-fields-2.rs:15:13
   |
LL |     let u = U { ..u };
   |             ^

error[E0436]: functional record update syntax requires a struct
  --> $DIR/union-fields-2.rs:15:19
   |
LL |     let u = U { ..u };
   |                   ^

error: union patterns should have exactly one field
  --> $DIR/union-fields-2.rs:18:9
   |
LL |     let U {} = u;
   |         ^^^^

error: union patterns should have exactly one field
  --> $DIR/union-fields-2.rs:20:9
   |
LL |     let U { a, b } = u;
   |         ^^^^^^^^^^

error: union patterns should have exactly one field
  --> $DIR/union-fields-2.rs:21:9
   |
LL |     let U { a, b, c } = u;
   |         ^^^^^^^^^^^^^

error[E0026]: union `U` does not have a field named `c`
  --> $DIR/union-fields-2.rs:21:19
   |
LL |     let U { a, b, c } = u;
   |                   ^ union `U` does not have this field

error: union patterns should have exactly one field
  --> $DIR/union-fields-2.rs:23:9
   |
LL |     let U { .. } = u;
   |         ^^^^^^^^

error: `..` cannot be used in union patterns
  --> $DIR/union-fields-2.rs:23:9
   |
LL |     let U { .. } = u;
   |         ^^^^^^^^

error: `..` cannot be used in union patterns
  --> $DIR/union-fields-2.rs:25:9
   |
LL |     let U { a, .. } = u;
   |         ^^^^^^^^^^^

error: aborting due to 13 previous errors

Some errors have detailed explanations: E0026, E0436, E0560, E0784.
For more information about an error, try `rustc --explain E0026`.