error[E0499]: cannot borrow `*self` as mutable more than once at a time
  --> $DIR/suggest-local-var-double-mut.rs:12:22
   |
LL |             self.foo(self.bar());
   |             ---- --- ^^^^ second mutable borrow occurs here
   |             |    |
   |             |    first borrow later used by call
   |             first mutable borrow occurs here
   |
help: try adding a local storing this argument...
  --> $DIR/suggest-local-var-double-mut.rs:12:22
   |
LL |             self.foo(self.bar());
   |                      ^^^^^^^^^^
help: ...and then using that local as the argument to this call
  --> $DIR/suggest-local-var-double-mut.rs:12:13
   |
LL |             self.foo(self.bar());
   |             ^^^^^^^^^^^^^^^^^^^^

error[E0499]: cannot borrow `*self` as mutable more than once at a time
  --> $DIR/suggest-local-var-double-mut.rs:24:39
   |
LL |             Self::foo(self, Self::bar(self));
   |             --------- ----            ^^^^ second mutable borrow occurs here
   |             |         |
   |             |         first mutable borrow occurs here
   |             first borrow later used by call
   |
help: try adding a local storing this argument...
  --> $DIR/suggest-local-var-double-mut.rs:24:29
   |
LL |             Self::foo(self, Self::bar(self));
   |                             ^^^^^^^^^^^^^^^
help: ...and then using that local as the argument to this call
  --> $DIR/suggest-local-var-double-mut.rs:24:13
   |
LL |             Self::foo(self, Self::bar(self));
   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0499`.