error: this file contains an un-closed delimiter
  --> $DIR/issue-63135.rs:3:16
   |
LL | fn i(n{...,f #
   |     - -        ^
   |     | |
   |     | un-closed delimiter
   |     un-closed delimiter

error: expected field pattern, found `...`
  --> $DIR/issue-63135.rs:3:8
   |
LL | fn i(n{...,f #
   |        ^^^ help: to omit remaining fields, use one fewer `.`: `..`

error: expected `}`, found `,`
  --> $DIR/issue-63135.rs:3:11
   |
LL | fn i(n{...,f #
   |        ---^
   |        |  |
   |        |  expected `}`
   |        `..` must be at the end and cannot have a trailing comma

error: expected `[`, found `}`
  --> $DIR/issue-63135.rs:3:15
   |
LL | fn i(n{...,f #
   |               ^ expected `[`

error: expected `:`, found `)`
  --> $DIR/issue-63135.rs:3:15
   |
LL | fn i(n{...,f #
   |               ^ expected `:`

error: expected one of `->`, `where`, or `{`, found `<eof>`
  --> $DIR/issue-63135.rs:3:15
   |
LL | fn i(n{...,f #
   |               ^ expected one of `->`, `where`, or `{` here

error: aborting due to 6 previous errors