Compiler flag: force move to explicitly specify variables

Question: Is there a compiler flag, where instead of writing

move | ... | { ... }

the compiler forces the user to write:

move (... list of vars to move ...) | ... | { ... }


XY Problem: I'm trying to debug a GUI bug where I expect a certain Rc<T> to drop to 0 (and trigger a Drop). Instead, it refuses to happen on certain GUI events.

One possible source of this annoying bug is that there is some closure that is moving a Rc<T> (where I'm expecting it to be dropped).

Thus: is there some compiler flag where for each move, I have to explicitly specify which variables are being moved?

No, but you can explicitly drop(var) for the ones you don't want moved.