error[E0133]: assignment to non-`Copy` union field is unsafe and requires unsafe function or block
  --> $DIR/union-unsafe.rs:21:5
   |
LL |     u3.a = T::default();
   |     ^^^^ assignment to non-`Copy` union field
   |
   = note: the previous content of the field will be dropped, which causes undefined behavior if the field was not properly initialized

error[E0133]: access to union field is unsafe and requires unsafe function or block
  --> $DIR/union-unsafe.rs:33:13
   |
LL |     let a = u1.a;
   |             ^^^^ access to union field
   |
   = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior

error[E0133]: access to union field is unsafe and requires unsafe function or block
  --> $DIR/union-unsafe.rs:35:14
   |
LL |     let U1 { a } = u1;
   |              ^ access to union field
   |
   = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior

error[E0133]: access to union field is unsafe and requires unsafe function or block
  --> $DIR/union-unsafe.rs:36:20
   |
LL |     if let U1 { a: 12 } = u1 {}
   |                    ^^ access to union field
   |
   = note: the field may not be properly initialized: using uninitialized data will cause undefined behavior

error[E0133]: assignment to non-`Copy` union field is unsafe and requires unsafe function or block
  --> $DIR/union-unsafe.rs:40:5
   |
LL |     u2.a = String::from("new");
   |     ^^^^ assignment to non-`Copy` union field
   |
   = note: the previous content of the field will be dropped, which causes undefined behavior if the field was not properly initialized

error[E0133]: assignment to non-`Copy` union field is unsafe and requires unsafe function or block
  --> $DIR/union-unsafe.rs:44:5
   |
LL |     u3.a = String::from("new");
   |     ^^^^ assignment to non-`Copy` union field
   |
   = note: the previous content of the field will be dropped, which causes undefined behavior if the field was not properly initialized

error: aborting due to 6 previous errors

For more information about this error, try `rustc --explain E0133`.