error: expected parameter name, found `{`
  --> $DIR/issue-92481.rs:5:6
   |
LL | fn r({) {
   |      ^ expected parameter name

error: expected one of `,`, `:`, or `}`, found `..`
  --> $DIR/issue-92481.rs:5:6
   |
LL | fn r({) {
   |      ^ unclosed delimiter
LL |     Ok {
LL |         d..||_=m
   |          -^
   |          |
   |          help: `}` may belong here

error[E0425]: cannot find value `d` in this scope
  --> $DIR/issue-92481.rs:7:9
   |
LL |         d..||_=m
   |         ^ not found in this scope

error[E0425]: cannot find value `m` in this scope
  --> $DIR/issue-92481.rs:7:16
   |
LL |         d..||_=m
   |                ^ not found in this scope

error[E0559]: variant `Result<_, _>::Ok` has no field named `d`
  --> $DIR/issue-92481.rs:7:9
   |
LL |         d..||_=m
   |         ^ field does not exist
  --> $SRC_DIR/core/src/result.rs:LL:COL
   |
   = note: `Result<_, _>::Ok` defined here
   |
help: `Result<_, _>::Ok` is a tuple variant, use the appropriate syntax
   |
LL |     Result<_, _>::Ok(/* fields */)
   |

error[E0308]: mismatched types
  --> $DIR/issue-92481.rs:6:5
   |
LL |   fn r({) {
   |           - help: a return type might be missing here: `-> _`
LL | /     Ok {
LL | |         d..||_=m
LL | |     }
   | |_____^ expected `()`, found enum `Result`
   |
   = note: expected unit type `()`
                   found enum `Result<_, _>`

error: aborting due to 6 previous errors

Some errors have detailed explanations: E0308, E0425, E0559.
For more information about an error, try `rustc --explain E0308`.