tests/fail/both_borrows/box-custom-alloc-aliasing.stack.stderr

error: Undefined Behavior: attempting a read access using <TAG> at ALLOC[RANGE], but that tag does not exist in the borrow stack for this location
  --> tests/fail/both_borrows/box-custom-alloc-aliasing.rs:LL:CC
   |
LL |         let thread_id = ptr::read(ptr::addr_of!((*their_bin).thread_id));
   |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this error occurs as part of an access at ALLOC[RANGE]
   |
   = 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 Unique retag at offsets [RANGE]
  --> tests/fail/both_borrows/box-custom-alloc-aliasing.rs:LL:CC
   |
LL |     (Box::new_in([t], a) as Box<[T], A>).into_vec()
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   = note: stack backtrace:
           0: <MyAllocator as std::alloc::Allocator>::deallocate
               at tests/fail/both_borrows/box-custom-alloc-aliasing.rs:LL:CC
           1: <&MyAllocator as std::alloc::Allocator>::deallocate
               at RUSTLIB/core/src/alloc/mod.rs:LL:CC
           2: alloc::raw_vec::RawVecInner::<&MyAllocator>::deallocate
               at RUSTLIB/alloc/src/raw_vec/mod.rs:LL:CC
           3: <alloc::raw_vec::RawVec<usize, &MyAllocator> as std::ops::Drop>::drop
               at RUSTLIB/alloc/src/raw_vec/mod.rs:LL:CC
           4: std::ptr::drop_glue::<alloc::raw_vec::RawVec<usize, &MyAllocator>> - shim(Some(alloc::raw_vec::RawVec<usize, &MyAllocator>))
               at RUSTLIB/core/src/ptr/mod.rs:LL:CC
           5: std::ptr::drop_glue::<std::vec::Vec<usize, &MyAllocator>> - shim(Some(std::vec::Vec<usize, &MyAllocator>))
               at RUSTLIB/core/src/ptr/mod.rs:LL:CC
           6: std::ptr::drop_glue::<(std::vec::Vec<usize, &MyAllocator>, std::vec::Vec<usize, &MyAllocator>)> - shim(Some((std::vec::Vec<usize, &MyAllocator>, std::vec::Vec<usize, &MyAllocator>)))
               at RUSTLIB/core/src/ptr/mod.rs:LL:CC
           7: std::mem::drop::<(std::vec::Vec<usize, &MyAllocator>, std::vec::Vec<usize, &MyAllocator>)>
               at RUSTLIB/core/src/mem/mod.rs:LL:CC
           8: main
               at tests/fail/both_borrows/box-custom-alloc-aliasing.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