error: this file contains an unclosed delimiter
  --> $DIR/deli-ident-issue-1.rs:22:66
   |
LL | impl dyn Demo {
   |               - unclosed delimiter
...
LL |         && let Some(c) = num {
   |                              - this delimiter might not be properly closed...
...
LL |     }
   |     - ...as it matches this but it has different indentation
...
LL | fn main() { }
   |                                                                  ^

error: aborting due to previous error