Meilisearch panic at search time

[irevoire]

Describe the bug
When I send the following totally legit request to meilisearch:

{
  "q":"\u001b[1m"
}

It returns:

{
  "message": "task 1983 panicked",
  "code": "internal",
  "type": "internal",
  "link": "https://docs.meilisearch.com/errors#internal"
}

Here is what I get in the logs:

thread 'tokio-runtime-worker' panicked at 'attempt to add with overflow', milli/src/search/new/query_term/parse_query.rs:82:25
stack backtrace:
   0: rust_begin_unwind
             at /rustc/9ecda8de85ce893cc3fc748ab06be0b8250147a7/library/std/src/panicking.rs:578:5
   1: core::panicking::panic_fmt
             at /rustc/9ecda8de85ce893cc3fc748ab06be0b8250147a7/library/core/src/panicking.rs:67:14
   2: core::panicking::panic
             at /rustc/9ecda8de85ce893cc3fc748ab06be0b8250147a7/library/core/src/panicking.rs:117:5
   3: milli::search::new::query_term::parse_query::located_query_terms_from_tokens
             at ./milli/src/search/new/query_term/parse_query.rs:82:25
   4: milli::search::new::execute_search
             at ./milli/src/search/new/mod.rs:390:27
   5: milli::search::Search::execute
             at ./milli/src/search/mod.rs:106:13
   6: meilisearch::search::perform_search
             at ./meilisearch/src/search.rs:323:81
   7: meilisearch::routes::indexes::search::search_with_post::{{closure}}::{{closure}}
             at ./meilisearch/src/routes/indexes/search.rs:180:61
   8: <tokio::runtime::blocking::task::BlockingTask<T> as core::future::future::Future>::poll
             at /home/irevoire/.cargo/registry/src/index.crates.io-6f17d22bba15001f/tokio-1.27.0/src/runtime/blocking/task.rs:42:21
   9: tokio::runtime::task::core::Core<T,S>::poll::{{closure}}
             at /home/irevoire/.cargo/registry/src/index.crates.io-6f17d22bba15001f/tokio-1.27.0/src/runtime/task/core.rs:223:17
  10: tokio::loom::std::unsafe_cell::UnsafeCell<T>::with_mut
             at /home/irevoire/.cargo/registry/src/index.crates.io-6f17d22bba15001f/tokio-1.27.0/src/loom/std/unsafe_cell.rs:14:9
  11: tokio::runtime::task::core::Core<T,S>::poll
             at /home/irevoire/.cargo/registry/src/index.crates.io-6f17d22bba15001f/tokio-1.27.0/src/runtime/task/core.rs:212:13
  12: tokio::runtime::task::harness::poll_future::{{closure}}
             at /home/irevoire/.cargo/registry/src/index.crates.io-6f17d22bba15001f/tokio-1.27.0/src/runtime/task/harness.rs:476:19
  13: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
             at /rustc/9ecda8de85ce893cc3fc748ab06be0b8250147a7/library/core/src/panic/unwind_safe.rs:271:9
  14: std::panicking::try::do_call
             at /rustc/9ecda8de85ce893cc3fc748ab06be0b8250147a7/library/std/src/panicking.rs:485:40
  15: __rust_try
  16: std::panicking::try
             at /rustc/9ecda8de85ce893cc3fc748ab06be0b8250147a7/library/std/src/panicking.rs:449:19
  17: std::panic::catch_unwind
             at /rustc/9ecda8de85ce893cc3fc748ab06be0b8250147a7/library/std/src/panic.rs:140:14
  18: tokio::runtime::task::harness::poll_future
             at /home/irevoire/.cargo/registry/src/index.crates.io-6f17d22bba15001f/tokio-1.27.0/src/runtime/task/harness.rs:464:18
  19: tokio::runtime::task::harness::Harness<T,S>::poll_inner
             at /home/irevoire/.cargo/registry/src/index.crates.io-6f17d22bba15001f/tokio-1.27.0/src/runtime/task/harness.rs:198:27
  20: tokio::runtime::task::harness::Harness<T,S>::poll
             at /home/irevoire/.cargo/registry/src/index.crates.io-6f17d22bba15001f/tokio-1.27.0/src/runtime/task/harness.rs:152:15
  21: tokio::runtime::task::raw::poll
             at /home/irevoire/.cargo/registry/src/index.crates.io-6f17d22bba15001f/tokio-1.27.0/src/runtime/task/raw.rs:255:5
  22: tokio::runtime::task::raw::RawTask::poll
             at /home/irevoire/.cargo/registry/src/index.crates.io-6f17d22bba15001f/tokio-1.27.0/src/runtime/task/raw.rs:200:18
  23: tokio::runtime::task::UnownedTask<S>::run
             at /home/irevoire/.cargo/registry/src/index.crates.io-6f17d22bba15001f/tokio-1.27.0/src/runtime/task/mod.rs:431:9
  24: tokio::runtime::blocking::pool::Task::run
             at /home/irevoire/.cargo/registry/src/index.crates.io-6f17d22bba15001f/tokio-1.27.0/src/runtime/blocking/pool.rs:159:9
  25: tokio::runtime::blocking::pool::Inner::run
             at /home/irevoire/.cargo/registry/src/index.crates.io-6f17d22bba15001f/tokio-1.27.0/src/runtime/blocking/pool.rs:513:17
  26: tokio::runtime::blocking::pool::Spawner::spawn_thread::{{closure}}
             at /home/irevoire/.cargo/registry/src/index.crates.io-6f17d22bba15001f/tokio-1.27.0/src/runtime/blocking/pool.rs:471:13
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

Expected behavior
It doesn't panic

Meilisearch version:
Latest rc

Additional context
It was working on the previous versions of meilisearch

[gillian-meilisearch]

Closing this issue as it is resolved by #3786 and will be part of v1.2.0-rc.3