tests/fail/alloc/stack_free.stderr

error: Undefined Behavior: deallocating ALLOC, which is stack variable memory, using Rust heap deallocation operation
  --> RUSTLIB/alloc/src/boxed.rs:LL:CC
   |
LL |                 self.1.deallocate(From::from(ptr.cast()), layout);
   |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Undefined Behavior occurred here
   |
   = help: this indicates a bug in the program: it performed an invalid operation, and caused Undefined Behavior
   = help: see https://doc.rust-lang.org/nightly/reference/behavior-considered-undefined.html for further information
   = note: stack backtrace:
           0: <std::boxed::Box<i32> as std::ops::Drop>::drop
               at RUSTLIB/alloc/src/boxed.rs:LL:CC
           1: std::ptr::drop_in_place))
               at RUSTLIB/core/src/ptr/mod.rs:LL:CC
           2: std::mem::drop
               at RUSTLIB/core/src/mem/mod.rs:LL:CC
           3: main
               at tests/fail/alloc/stack_free.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