error[E0381]: used binding `e` isn't initialized
  --> $DIR/issue-62107-match-arm-scopes.rs:3:11
   |
LL |     let e: i32;
   |         - binding declared here but left uninitialized
LL |     match e {
   |           ^ `e` used here but it isn't initialized
   |
help: consider assigning a value
   |
LL |     let e: i32 = 0;
   |                +++

error: aborting due to previous error

For more information about this error, try `rustc --explain E0381`.