use-after-free in tracing
The implementation of the Instrumented::into_inner method in affected versions of this crate contains undefined behavior due to incorrect use of std::mem::forget The function creates *const pointers to self, calls mem::forget(self), and then moves values out of those pointers using std::ptr::read. // To manually destructure Instrumented without Drop, we // move it into a ManuallyDrop and use pointers to its fields let span: *const Span = &this.span; let inner: *const ManuallyDrop<T> …