src/tools/miri/tests/fail/both_borrows/aliasing_mut3.stack.stderr

error: Undefined Behavior: trying to retag from <TAG> for SharedReadOnly permission at ALLOC[0x0], but that tag does not exist in the borrow stack for this location
  --> tests/fail/both_borrows/aliasing_mut3.rs:LL:CC
   |
LL | fn safe(x: &mut i32, y: &i32) {
   |                      ^ this error occurs as part of function-entry retag at ALLOC[0x0..0x4]
   |
   = help: this indicates a potential bug in the program: it performed an invalid operation, but the Stacked Borrows rules it violated are still experimental
   = help: see https://github.com/rust-lang/unsafe-code-guidelines/blob/master/wip/stacked-borrows.md for further information
help: <TAG> was created by a SharedReadOnly retag at offsets [0x0..0x4]
  --> tests/fail/both_borrows/aliasing_mut3.rs:LL:CC
   |
LL |     safe_raw(xraw, xshr);
   |                    ^^^^
help: <TAG> was later invalidated at offsets [0x0..0x4] by a Unique function-entry retag inside this call
  --> tests/fail/both_borrows/aliasing_mut3.rs:LL:CC
   |
LL |     safe_raw(xraw, xshr);
   |     ^^^^^^^^^^^^^^^^^^^^
   = note: stack backtrace:
           0: safe
               at tests/fail/both_borrows/aliasing_mut3.rs:LL:CC
           1: main
               at tests/fail/both_borrows/aliasing_mut3.rs:LL:CC

note: some details are omitted, run with `MIRIFLAGS=-Zmiri-backtrace=full` for a verbose backtrace

error: aborting due to 1 previous error