error[E0261]: use of undeclared lifetime name `'a`
  --> $DIR/erase-error-in-mir-drop-tracking.rs:11:46
   |
LL |     fn connect(&'_ self) -> Self::Connecting<'a>;
   |                                              ^^ undeclared lifetime
   |
help: consider introducing lifetime `'a` here
   |
LL |     fn connect<'a>(&'_ self) -> Self::Connecting<'a>;
   |               ++++
help: consider introducing lifetime `'a` here
   |
LL | trait Client<'a> {
   |             ++++

error: `C` does not live long enough
  --> $DIR/erase-error-in-mir-drop-tracking.rs:19:5
   |
LL |     async move { c.connect().await }
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0261`.