infer_clone/infer/documentation/issues/CAPTURED_STRONG_SELF.md

This will happen in one of two cases generally:

1. One uses weakSelf but forgot to declare it weak first.
2. One is using strongSelf, declared in a block, in another (inside) block. This changes the delicate balance of the weakSelf/strongSelf use in the first block. The retain cycle is avoided there because strongSelf is a local variable to the block. If strongSelf is used in the inside block, then it's not a local variable anymore, but a captured variable.