## Problem As a part of [supporting full sync](https://gitlab.com/gitlab-org/gitlab/-/issues/397003), an abstraction called `StoppableTask` was introduced to run one-off tasks asynchronously with the ability to be able to stop them on demand. The abstraction has a limitation in that the current implementation doesnt capture the result of the async task as that isn't required at present. However, if such a need does develop, the existing abstraction will need to be updated ## Solution - Update contract of `StopAndWait()` to return error - Atomically capture and record an error in the struct `simpleStoppableTask`