error: memory leaked: ALLOC (Rust heap, size: 4, align: 4), allocated here:
  --> tests/fail/tls_macro_leak.rs:LL:CC
   |
LL |             cell.set(Some(Box::leak(Box::new(123))));
   |                                     ^^^^^^^^^^^^^
   |
   = note: BACKTRACE:
   = note: inside closure at tests/fail/tls_macro_leak.rs:LL:CC
   = note: inside `std::thread::LocalKey::<std::cell::Cell<std::option::Option<&i32>>>::try_with::<{closure@tests/fail/tls_macro_leak.rs:LL:CC}, ()>` at RUSTLIB/std/src/thread/local.rs:LL:CC
   = note: inside `std::thread::LocalKey::<std::cell::Cell<std::option::Option<&i32>>>::with::<{closure@tests/fail/tls_macro_leak.rs:LL:CC}, ()>` at RUSTLIB/std/src/thread/local.rs:LL:CC
note: inside closure
  --> tests/fail/tls_macro_leak.rs:LL:CC
   |
LL | /         TLS.with(|cell| {
LL | |             cell.set(Some(Box::leak(Box::new(123))));
LL | |         });
   | |__________^

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

note: set `MIRIFLAGS=-Zmiri-ignore-leaks` to disable this check

error: aborting due to 1 previous error