error: this `else { if .. }` block can be collapsed
   --> src/app.rs:490:16
    |
490 |           } else {
    |  ________________^
491 | |             if let Err(e) = self.credit_dest(dest.clone(), coins.take(amount)?, sender) {
492 | |                 log::debug!("Error crediting transfer: {:?}", e);
493 | |                 // TODO: ensure no errors can happen after mutating
...   |
501 | |             }
502 | |         }
    | |_________^
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_else_if
    = note: `-D clippy::collapsible-else-if` implied by `-D warnings`
    = help: to override `-D warnings` add `#[allow(clippy::collapsible_else_if)]`
help: collapse nested if block
    |
490 ~         } else if let Err(e) = self.credit_dest(dest.clone(), coins.take(amount)?, sender) {
491 +             log::debug!("Error crediting transfer: {:?}", e);
492 +             // TODO: ensure no errors can happen after mutating
493 +             // state in credit_dest since state won't be reverted
494 + 
495 +             // Assume coins passed into credit_dest are burnt,
496 +             // replace them in `coins`
497 +             coins.give(Coin::mint(amount))?;
498 +         } else {
499 +             succeeded = true;
500 +         }
    |