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error[E0308]: mismatched types
  --> $DIR/issue-89856.rs:8:20
   |
LL |     take_str_maybe(option);
   |     -------------- ^^^^^^ expected `Option<&str>`, found `Option<String>`
   |     |
   |     arguments to this function are incorrect
   |
   = note: expected enum `Option<&str>`
              found enum `Option<String>`
note: function defined here
  --> $DIR/issue-89856.rs:3:4
   |
LL | fn take_str_maybe(_: Option<&str>) { }
   |    ^^^^^^^^^^^^^^ ---------------
help: try converting the passed type into a `&str`
   |
LL |     take_str_maybe(option.as_deref());
   |                          +++++++++++

error[E0308]: mismatched types
  --> $DIR/issue-89856.rs:12:20
   |
LL |     take_str_maybe(option_ref);
   |     -------------- ^^^^^^^^^^ expected `Option<&str>`, found `Option<&String>`
   |     |
   |     arguments to this function are incorrect
   |
   = note: expected enum `Option<&str>`
              found enum `Option<&String>`
note: function defined here
  --> $DIR/issue-89856.rs:3:4
   |
LL | fn take_str_maybe(_: Option<&str>) { }
   |    ^^^^^^^^^^^^^^ ---------------
help: try converting the passed type into a `&str`
   |
LL |     take_str_maybe(option_ref.map(|x| x.as_str()));
   |                              ++++++++++++++++++++

error[E0308]: mismatched types
  --> $DIR/issue-89856.rs:16:20
   |
LL |     take_str_maybe(option_ref_ref);
   |     -------------- ^^^^^^^^^^^^^^ expected `Option<&str>`, found `Option<&&String>`
   |     |
   |     arguments to this function are incorrect
   |
   = note: expected enum `Option<&str>`
              found enum `Option<&&String>`
note: function defined here
  --> $DIR/issue-89856.rs:3:4
   |
LL | fn take_str_maybe(_: Option<&str>) { }
   |    ^^^^^^^^^^^^^^ ---------------
help: try converting the passed type into a `&str`
   |
LL |     take_str_maybe(option_ref_ref.map(|x| x.as_str()));
   |                                  ++++++++++++++++++++

error: aborting due to 3 previous errors

For more information about this error, try `rustc --explain E0308`.