When a type is given to a proc macro as a string, such as in https://github.com/diesel-rs/diesel/blob/6e2d467d131030dc0bbce4e4801c7bee7bcbf0dd/diesel/src/type_impls/primitives.rs#L20, cargo fix --edition will incorrectly generate crate::"::old_type::Path". If there are nested types inside, such as https://github.com/diesel-rs/diesel/blob/6e2d467d131030dc0bbce4e4801c7bee7bcbf0dd/diesel/src/type_impls/primitives.rs#L42, they won't be touched at all.