error[E0275]: overflow evaluating the requirement `RootDatabase: RefUnwindSafe`
  --> $DIR/cycle-cache-err-60010.rs:27:13
   |
LL |     _parse: <ParseQuery as Query<RootDatabase>>::Data,
   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
note: required for `RootDatabase` to implement `SourceDatabase`
  --> $DIR/cycle-cache-err-60010.rs:44:9
   |
LL | impl<T> SourceDatabase for T
   |         ^^^^^^^^^^^^^^     ^
LL | where
LL |     T: RefUnwindSafe,
   |        ------------- unsatisfied trait bound introduced here
note: required for `ParseQuery` to implement `Query<RootDatabase>`
  --> $DIR/cycle-cache-err-60010.rs:37:10
   |
LL | impl<DB> Query<DB> for ParseQuery
   |          ^^^^^^^^^     ^^^^^^^^^^
LL | where
LL |     DB: SourceDatabase,
   |         -------------- unsatisfied trait bound introduced here

error: aborting due to previous error

For more information about this error, try `rustc --explain E0275`.