| error[E0599]: no function or associated item named `contains` found for struct `Vec<_, _>` in the current scope | 
 |   --> $DIR/deref-path-method.rs:3:10 | 
 |    | | 
 | LL |     Vec::contains(&vec, &0); | 
 |    |          ^^^^^^^^ function or associated item not found in `Vec<_, _>` | 
 |    | | 
 | note: if you're trying to build a new `Vec<_, _>` consider using one of the following associated functions: | 
 |       Vec::<T>::new | 
 |       Vec::<T>::with_capacity | 
 |       Vec::<T>::try_with_capacity | 
 |       Vec::<T>::from_raw_parts | 
 |       and 6 others | 
 |   --> $SRC_DIR/alloc/src/vec/mod.rs:LL:COL | 
 | help: the function `contains` is implemented on `[_]` | 
 |    | | 
 | LL -     Vec::contains(&vec, &0); | 
 | LL +     <[_]>::contains(&vec, &0); | 
 |    | | 
 |  | 
 | error: aborting due to 1 previous error | 
 |  | 
 | For more information about this error, try `rustc --explain E0599`. |