ices/68890.rs: fixed with errors (#283)

=== stdout ===
=== stderr ===
error: `?` may only modify trait bounds, not lifetime bounds
 --> /home/runner/work/glacier/glacier/ices/68890.rs:1:11
  |
1 | enum e{A((?'a a+?+l))}
  |           ^

error: expected one of `)`, `+`, or `,`, found `a`
 --> /home/runner/work/glacier/glacier/ices/68890.rs:1:15
  |
1 | enum e{A((?'a a+?+l))}
  |               ^ expected one of `)`, `+`, or `,`

error: expected trait bound, not lifetime bound
 --> /home/runner/work/glacier/glacier/ices/68890.rs:1:11
  |
1 | enum e{A((?'a a+?+l))}
  |           ^^^

error: aborting due to 3 previous errors

==============

Co-authored-by: rustbot <[email protected]>

Author: github-actions[bot]