clippy 0.0.208

A bunch of helpful lints to avoid common pitfalls in Rust
error: removed "unsafe" from the name of `UnsafeCell` in use as `TotallySafeCell`
 --> $DIR/unsafe_removed_from_name.rs:7:1
  |
7 | use std::cell::{UnsafeCell as TotallySafeCell};
  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  |
  = note: `-D unsafe-removed-from-name` implied by `-D warnings`

error: removed "unsafe" from the name of `UnsafeCell` in use as `TotallySafeCellAgain`
 --> $DIR/unsafe_removed_from_name.rs:9:1
  |
9 | use std::cell::UnsafeCell as TotallySafeCellAgain;
  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: removed "unsafe" from the name of `Unsafe` in use as `LieAboutModSafety`
  --> $DIR/unsafe_removed_from_name.rs:23:1
   |
23 | use mod_with_some_unsafe_things::Unsafe as LieAboutModSafety;
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: aborting due to 3 previous errors