Indexing stuck/crashes after merging frontrunning (testnet)

[emilcondrea]

I've been testing frontrunning protection and its great! Thanks for doing this, @casey
But somehow this change, #3212 crashes the indexer when trying to index a fresh/from scratch testnet. On regtest this works well.

./target/release/ord --testnet --index-runes --data-dir ./somenewdir

[indexing blocks] █████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████░░░░ 2520002/2582461thread '<unnamed>' panicked at src/index/updater/rune_updater.rs:240:10:
called `Option::unwrap()` on a `None` value
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

[casey]

Thanks for the report! Can you run it with export RUST_BACKTRACE=1?

I have a hunch I know what the problem is.

[emilcondrea]

Yes. I've tried to check before unwrap but then goes to infinite loop.

export RUST_BACKTRACE=1
➜  ord git:(master) ✗ ./target/release/ord --testnet --index-runes --data-dir ./index5   server --http-port 9001 
Listening on http://0.0.0.0:9001
[indexing blocks] █████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████░░░░ 2520002/2582469thread '<unnamed>' panicked at src/index/updater/rune_updater.rs:240:10:
called `Option::unwrap()` on a `None` value
stack backtrace:
   0: rust_begin_unwind
             at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:645:5
   1: core::panicking::panic_fmt
             at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panicking.rs:72:14
   2: core::panicking::panic
             at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panicking.rs:144:5
   3: ord::index::updater::rune_updater::RuneUpdater::index_runes
   4: ord::index::updater::Updater::index_block
   5: ord::index::Index::update
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

[emilcondrea]

Here its crashing, rune_updater.rs line 239

 for input in tx.input.iter() {
      if input.previous_output.is_null() {
        continue;
      }

      self
        .outpoint_to_output
        .remove(&input.previous_output.store())?
        .unwrap();
    }