1 error[E0133]: mutation of layout constrained field is unsafe and requires unsafe function or block
2 --> $DIR/unsafe-borrow.rs:12:13
4 LL | let a = &mut foo.0.0;
5 | ^^^^^^^^^^^^ mutation of layout constrained field
7 = note: mutating layout constrained fields cannot statically be checked for valid values
9 error[E0133]: mutation of layout constrained field is unsafe and requires unsafe function or block
10 --> $DIR/unsafe-borrow.rs:32:13
12 LL | let a = &mut foo.0[2];
13 | ^^^^^^^^^^^^^ mutation of layout constrained field
15 = note: mutating layout constrained fields cannot statically be checked for valid values
17 error[E0133]: mutation of layout constrained field is unsafe and requires unsafe function or block
18 --> $DIR/unsafe-borrow.rs:51:18
20 LL | NonZero((a,)) => *a = 0,
21 | ^ mutation of layout constrained field
23 = note: mutating layout constrained fields cannot statically be checked for valid values
25 error: aborting due to 3 previous errors
27 For more information about this error, try `rustc --explain E0133`.