Unsoundness in `Error::downcast_mut()`

Affected versions of this crate violate borrow rules, resulting in undefined behavior, when the user adds context to an error via Error::context and then later calls Error::downcastmut on the returned Error. The flaw was corrected in commit 6e8c000 by revising how the mutable reference is...

PT-2026-55815

Affected versions of this crate violate borrow rules, resulting in undefined behavior, when the user adds context to an error via Error::context and then later calls Error::downcast mut on the returned Error. The flaw was corrected in commit 6e8c000 by revising how the mutable reference is...