error[E0283]: type annotations needed: cannot satisfy `(&'static (), &'a ()): A`
  --> $DIR/region-overlap.rs:5:16
   |
LL | impl<'a> A for (&'static (), &'a ()) {}
   |                ^^^^^^^^^^^^^^^^^^^^^
   |
note: multiple `impl`s satisfying `(&'static (), &'a ()): A` found
  --> $DIR/region-overlap.rs:5:1
   |
LL | impl<'a> A for (&'static (), &'a ()) {}
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
LL | impl<'a> A for (&'a (), &'static ()) {}
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error[E0283]: type annotations needed: cannot satisfy `(&'a (), &'static ()): A`
  --> $DIR/region-overlap.rs:6:16
   |
LL | impl<'a> A for (&'a (), &'static ()) {}
   |                ^^^^^^^^^^^^^^^^^^^^^
   |
note: multiple `impl`s satisfying `(&'a (), &'static ()): A` found
  --> $DIR/region-overlap.rs:5:1
   |
LL | impl<'a> A for (&'static (), &'a ()) {}
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
LL | impl<'a> A for (&'a (), &'static ()) {}
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0283`.