Ruff Langauge Server crash

[david-waterworth]

Sorry I cannot create code snippet for this, but I noticed these messages in my log. I think they occurred when I was dragging a vscode notebooks cell from one position to another (i.e. if I started with cells #1,#2 and #3 then I'm grabbing #2 with my mouse and moving it after #3)

I'm running ruff==0.5.6 with ruff extension version v2024.36.0 in vscode 1.92.0 on ubuntu 22.04

024-08-07 16:20:18.190 [info] panicked at crates/ruff_source_file/src/line_index.rs:176:13:
index out of bounds: the len is 1 but the index is 16

2024-08-07 16:20:18.245 [info]    0: <unknown>
   1: <unknown>
   2: <unknown>
   3: <unknown>
   4: <unknown>
   5: <unknown>
   6: <unknown>
   7: <unknown>
   8: <unknown>
   9: <unknown>
  10: <unknown>
  11: <unknown>
  12: <unknown>
  13: <unknown>
  14: start_thread
             at ./nptl/pthread_create.c:442:8
  15: __GI___clone3
             at ./misc/../sysdeps/unix/sysv/linux/x86_64/clone3.S:81

[dhruvmanila]

Interesting, the reproduction steps seems similar to astral-sh/ruff#12575 but here it's a panic instead. I think it's going to be a bit difficult to reproduce this without a code snippet.

It's most likely occurring in this function (https://github.com/astral-sh/ruff/blob/1a8fd7fb91e110a1e559f7f028b710986df10666/crates/ruff_server/src/edit/range.rs#L174-L207).

[dhruvmanila]

Does all the three cells contain Python code? Are there any cells that were markdown instead?

[david-waterworth]

Yeah there were markdown and python cells, I think the one I was dragging was Python.

[dhruvmanila]

I'm playing around with a mix of markdown / code cells and moving them around randomly but I don't see crash :(

[dhruvmanila]

Huh, this did give me the following (unrelated) panic though:

2024-08-07 15:37:33.967 [info] panicked at crates/ruff_server/src/server/api/requests/format.rs:67:10:
format should only be called on text documents or notebook cells

2024-08-07 15:37:33.975 [info]    0: std::backtrace::Backtrace::force_capture
   1: ruff_server::server::Server::run
   2: std::panicking::rust_panic_with_hook
   3: <std::panicking::begin_panic_handler::StaticStrPayload as core::panic::PanicPayload>::take_box
   4: <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt
   5: _rust_begin_unwind
   6: core::panicking::panic_fmt
   7: core::option::expect_failed
   8: <ruff_server::server::api::requests::format::Format as ruff_server::server::api::traits::BackgroundDocumentRequestHandler>::run_with_snapshot
   9: ruff_server::session::Session::take_snapshot
  10: ruff_python_trivia::pragmas::is_pragma_comment
  11: <ruff_server::server::api::requests::hover::Hover as ruff_server::server::api::traits::BackgroundDocumentRequestHandler>::run_with_snapshot
  12: <ruff_server::server::api::requests::hover::Hover as ruff_server::server::api::traits::BackgroundDocumentRequestHandler>::run_with_snapshot
  13: std::sys::pal::unix::thread::Thread::new
  14: __pthread_joiner_wake

And, then the editor hangs at "Saving 'issue.ipynb'"

[david-waterworth]

Haven't managed to repeat it today, but instead I got this (which I cannot replicate at this stage either)

2024-08-08 08:42:03.415 [info] panicked at crates/ruff_server/src/server/api/requests/hover.rs:36:10:
hover should only be called on text documents or notebook cells

2024-08-08 08:42:03.470 [info]    0: ruff_server::server::Server::run::{{closure}}
   1: std::panicking::rust_panic_with_hook
   2: std::panicking::begin_panic_handler::{{closure}}
   3: std::sys_common::backtrace::__rust_end_short_backtrace
   4: rust_begin_unwind
   5: core::panicking::panic_fmt
   6: core::option::expect_failed
   7: <ruff_server::server::api::requests::hover::Hover as ruff_server::server::api::traits::
2024-08-08 08:42:03.470 [info] BackgroundDocumentRequestHandler>::run_with_snapshot
   8: core::ops::function::FnOnce::call_once{{vtable.shim}}
   9: core::ops::function::FnOnce::call_once{{vtable.shim}}
  10: std::sys_common::backtrace::__rust_begin_short_backtrace
  11: core::ops::function::FnOnce::call_once{{vtable.shim}}
  12: std::sys::pal::unix::thread::Thread::new::thread_start
  13: start_thread
             at ./nptl/pthread_create.c:442:8
  14: __GI___clone3
             at ./misc/../sysdeps/unix/sysv/linux/x86_64/clone3.S:81

[dhruvmanila]

Yeah, I got that as well which I'm tracking it in #575

[jbhanks]

I keep getting similar crashes when using Code 1.96.0 on EndeavorOS (Wayland and Nvidia proprietary drivers). I'm not sure exactly what I am doing to trigger it. The most recent occurrence (trace below) happened when I had my back turned to the computer, not actively doing anything.

2024-12-31 01:40:26.247 [info] Name: Ruff
2024-12-31 01:40:26.247 [info] Module: ruff
2024-12-31 01:40:26.247 [info] Python extension loading
2024-12-31 01:40:26.247 [info] Waiting for interpreter from python extension.
2024-12-31 01:40:26.247 [info] Python extension loaded
2024-12-31 01:40:26.247 [info] Using interpreter: /bin/python
2024-12-31 01:40:26.247 [info] Falling back to bundled executable: /home/james/.vscode-oss/extensions/charliermarsh.ruff-2024.56.0-linux-x64/bundled/libs/bin/ruff
2024-12-31 01:40:26.278 [info] Resolved 'ruff.nativeServer: auto' to use the native server
2024-12-31 01:40:26.282 [info] Found Ruff 0.8.0 at /home/james/.vscode-oss/extensions/charliermarsh.ruff-2024.56.0-linux-x64/bundled/libs/bin/ruff
2024-12-31 01:40:26.282 [info] Server run command: /home/james/.vscode-oss/extensions/charliermarsh.ruff-2024.56.0-linux-x64/bundled/libs/bin/ruff server
2024-12-31 01:40:26.282 [info] Server: Start requested.
2025-01-01 02:03:40.104 [info] panicked at crates/ruff_source_file/src/line_index.rs:176:13:
index out of bounds: the len is 1 but the index is 24

2025-01-01 02:03:40.107 [info]    0: 
2025-01-01 02:03:40.108 [info] ruff_server::server::Server::run::{{closure}}
   1: std::panicking::rust_panic_with_hook
   2: std::panicking::begin_panic_handler::{{closure}}
   3: std::sys::backtrace::__rust_end_short_backtrace
   4: rust_begin_unwind
   5: core::panicking::panic_fmt
   6: core::panicking::panic_bounds_check
   7: ruff_source_file::line_index::LineIndex::line_range
   8: <ruff_server::server::api::requests::hover::Hover as ruff_server::server::api::traits::BackgroundDocumentRequestHandler>::run_with_snapshot
   9: core::ops::function::FnOnce::call_once{{vtable.shim}}
  10: core::ops::function::FnOnce::call_once{{vtable.shim}}
  11: std::sys::backtrace::__rust_begin_short_backtrace
  12: core::ops::function::FnOnce::call_once{{vtable.shim}}
  13: std::sys::pal::unix::thread::Thread::new::thread_start
  14: <unknown>
  15: <unknown>


2025-01-01 02:04:35.872 [info] panicked at crates/ruff_source_file/src/line_index.rs:176:13:
index out of bounds: the len is 1 but the index is 32
   0: ruff_server::server::Server::run::{{closure}}
   1: std::panicking::rust_panic_with_hook
   2: std::panicking::begin_panic_handler::{{closure}}
2025-01-01 02:04:35.872 [info] 
   3: std::sys::backtrace::__rust_end_short_backtrace
   4: rust_begin_unwind
   5: core::panicking::panic_fmt
   6: core::panicking::panic_bounds_check
   7: ruff_source_file::line_index::LineIndex::line_range
   8: <ruff_server::server::api::requests::hover::Hover as ruff_server::server::api::traits::BackgroundDocumentRequestHandler>::run_with_snapshot
   9: core::ops::function::FnOnce::call_once{{vtable.shim}}
  10: core::ops::function::FnOnce::call_once{{vtable.shim}}
  11: std::sys::backtrace::__rust_begin_short_backtrace
  12: core::ops::function::FnOnce::call_once{{vtable.shim}}
  13: std::sys::pal::unix::thread::Thread::new::thread_start
  14: <unknown>
  15: <unknown>


2025-01-01 02:04:36.505 [info] panicked at crates/ruff_source_file/src/line_index.rs:176:13:
index out of bounds: the len is 1 but the index is 20

2025-01-01 02:04:36.506 [info]    0: ruff_server::server::Server::run::{{closure}}
   1: std::panicking::rust_panic_with_hook
   2: std::panicking::begin_panic_handler::{{closure}}
   3: std::sys::backtrace::__rust_end_short_backtrace
   4: rust_begin_unwind
   5: core::panicking::panic_fmt
   6: core::panicking::panic_bounds_check
   7: ruff_source_file::line_index::LineIndex::line_range
   8: <ruff_server::server::api::requests::hover::Hover
2025-01-01 02:04:36.506 [info]  as ruff_server::server::api::traits::BackgroundDocumentRequestHandler>::run_with_snapshot
   9: core::ops::function::FnOnce::call_once{{vtable.shim}}
  10: core::ops::function::FnOnce::call_once{{vtable.shim}}
  11: std::sys::backtrace::__rust_begin_short_backtrace
  12: core::ops::function::FnOnce::
2025-01-01 02:04:36.506 [info] call_once{{vtable.shim}}
  13: std::sys::pal::unix::thread::Thread::new::thread_start
  14: <unknown>
  15: <unknown>


2025-01-01 02:09:55.310 [info] panicked at crates/ruff_source_file/src/line_index.rs:176:13:
index out of bounds: the len is 1 but the index is 30
   0: ruff_server::server::Server::run::{{closure}}
   1: 
2025-01-01 02:09:55.310 [info] std::panicking::rust_panic_with_hook
   2: std::panicking::begin_panic_handler::{{closure}}
   3: std::sys::backtrace::__rust_end_short_backtrace
   4: rust_begin_unwind
   5: core::panicking::panic_fmt
   6: core::panicking::panic_bounds_check
   7: ruff_source_file::line_index::LineIndex::line_range
   8: <ruff_server::server::api::requests::hover::Hover as ruff_server::server::api::traits::BackgroundDocumentRequestHandler>::run_with_snapshot
   9: core::ops::function::FnOnce::call_once{{vtable.shim}}
  10: core::ops::function::FnOnce::call_once{{vtable.shim}}
  11: std::sys::backtrace::__rust_begin_short_backtrace
  12: core::ops::function::FnOnce::call_once{
2025-01-01 02:09:55.310 [info] {vtable.shim}}
  13: std::sys::pal::unix::thread::Thread::new::thread_start
  14: <unknown>
  15: <unknown>


2025-01-01 02:09:55.906 [info] panicked at crates/ruff_source_file/src/line_index.rs:176:13:
index out of bounds: the len is 1 but the index is 27
   0: ruff_server::server::Server::run::{{closure}}
   1: std::panicking
2025-01-01 02:09:55.906 [info] ::rust_panic_with_hook
   2: std::panicking::begin_panic_handler::{{closure}}
   3: std::sys::backtrace::__rust_end_short_backtrace
   4: rust_begin_unwind
   5: core::panicking::panic_fmt
   6: core::panicking::panic_bounds_check
   7: ruff_source_file::line_index::LineIndex::line_range
2025-01-01 02:09:55.906 [info] 
   8: <ruff_server::server::api::requests::hover::Hover as ruff_server::server::api::traits::BackgroundDocumentRequestHandler>::run_with_snapshot
   9: core::ops::function::
2025-01-01 02:09:55.906 [info] FnOnce::call_once{{vtable.shim}}
  10: core::ops::function::FnOnce::call_once{{vtable.shim}}
  11: std::sys::backtrace
2025-01-01 02:09:55.906 [info] ::__rust_begin_short_backtrace
  12: core::ops::function::FnOnce::call_once{{vtable.shim}}
  13: std::sys::pal::unix::thread::Thread::new::
2025-01-01 02:09:55.906 [info] thread_start
  14: <unknown>
  15: <unknown>


2025-01-01 02:09:57.501 [info] panicked at crates/ruff_source_file/src/line_index.rs:176:13:
index out of bounds: the len is 1 but the index is 29
   0: ruff_server::server::Server::run::{{closure
2025-01-01 02:09:57.502 [info] }}
   1: std::panicking::rust_panic_with_hook
   2: std::panicking::begin_panic_handler::{{closure}}
   3: std::sys::backtrace::__rust_end_short_backtrace
   4: rust_begin_unwind
   5: core::panicking::panic_fmt
   6: core::panicking::panic_bounds_check
   7: ruff_source_file::line_index::LineIndex::line_range
   8: <ruff_server::server::api::requests::hover::Hover as ruff_server::server::api::traits::BackgroundDocumentRequestHandler>::run_with_snapshot
   9: core::ops::function::FnOnce::call_once{{vtable.shim}}
  
2025-01-01 02:09:57.502 [info] 10: core::ops::function::FnOnce::call_once{{vtable.shim}}
  11: std::sys::backtrace::__rust_begin_short_backtrace
  12: core::ops::function::FnOnce::call_once{{vtable.shim}}
  13: std::sys::pal::unix::
2025-01-01 02:09:57.502 [info] thread::Thread::new::thread_start
  14: <unknown>
  15: <unknown>


2025-01-01 02:10:41.464 [info] panicked at crates/ruff_source_file/src/line_index.rs:176:13:
index out of bounds: the len is 1 but the index is 16
   0: ruff_server::server::Server::run::{{closure}}
  
2025-01-01 02:10:41.464 [info]  1: std::panicking::rust_panic_with_hook
   2: std::panicking::begin_panic_handler::{{closure}}
   3: std::sys::backtrace::__rust_end_short_backtrace
   4: rust_begin_unwind
   5: core::panicking::panic_fmt
   6: core::panicking::panic_bounds_check
   7: ruff_source_file::line_index::LineIndex::line_range
   8: <ruff_server::server::api::requests::hover::Hover as ruff_server::server::api::traits::BackgroundDocumentRequestHandler>::run_with_snapshot
   9: core::ops::
2025-01-01 02:10:41.464 [info] function::FnOnce::call_once{{vtable.shim}}
  10: core::ops::function::FnOnce::call_once{{vtable.shim}}
  11: std::sys::backtrace::__rust_begin_short_backtrace
  12
2025-01-01 02:10:41.464 [info] : core::ops::function::FnOnce::call_once{{vtable.shim}}
  13: std::sys::pal::unix::thread::Thread::new::thread_start
  14: <unknown>
  15: <unknown>


2025-01-01 02:11:11.616 [info] panicked at crates/ruff_source_file/src/line_index.rs:176:13:
index out of bounds: the len is 1 but the index is 30
   0: 
2025-01-01 02:11:11.616 [info] ruff_server::server::Server::run::{{closure}}
   1: std::panicking::rust_panic_with_hook
   2: std::panicking::begin_panic_handler::{{closure}}
   3: std::sys::backtrace::__rust_end_short_backtrace
   4: rust_begin_unwind
   5: core::panicking::panic_fmt
   6: core::panicking::panic_bounds_check
   7: ruff_source_file::line_index::LineIndex::line_range
   8: <ruff_server::server::api::requests::hover
2025-01-01 02:11:11.616 [info] ::Hover as ruff_server::server::api::traits::BackgroundDocumentRequestHandler>::run_with_snapshot
   9: core::ops::function::FnOnce::call_once{{vtable.shim}}
  10: core::ops::function::FnOnce::call_once{{vtable.shim}}
  11: std::sys::backtrace
2025-01-01 02:11:11.616 [info] ::__rust_begin_short_backtrace
  12: core::ops::function::FnOnce::call_once{{vtable.shim}}
  13: std::sys::pal::unix::thread::Thread::new::thread_start
  14: <unknown>
  15: <unknown>


2025-01-01 02:11:13.075 [info] panicked at crates/ruff_source_file/src/line_index.rs:176:13:
index out of bounds: the len is 1 but the index is 30
   0: ruff_server::server::Server::run::{{closure}}
   1: std::panicking::rust_panic_with_hook
   2: std::panicking::begin_panic_handler::{{closure}}
   3: std::sys::backtrace
2025-01-01 02:11:13.075 [info] ::__rust_end_short_backtrace
   4: rust_begin_unwind
   5: core::panicking::panic_fmt
   6: core::panicking::panic_bounds_check
   7: ruff_source_file::line_index::LineIndex::line_range
   8: <lsp_types::Range as ruff_server::edit::range::RangeExt>::to_text_range
   9: ruff_server::edit::text_document::TextDocument::apply_changes
  10: ruff_server::edit::notebook::NotebookDocument::update
  11: ruff_server::session::index::Index::update_notebook_document
  12: <ruff_server::server::api::notifications
2025-01-01 02:11:13.075 [info] ::did_change_notebook::DidChangeNotebook as ruff_server::server::api::traits::SyncNotificationHandler>::run
  13: core::ops::function::FnOnce::call_once{{vtable.shim}}
  14: std::sys::backtrace
2025-01-01 02:11:13.075 [info] ::__rust_begin_short_backtrace
  15: core::ops::function::FnOnce::call_once{{vtable.shim}}
  16: std::sys::pal::unix::thread::Thread::new::
2025-01-01 02:11:13.075 [info] thread_start
  17: <unknown>
  18: <unknown>


2025-01-01 02:11:13.078 [info] panicked at /root/.cargo/registry/src/index.crates.io-6f17d22bba15001f/jod-thread-0.1.2/src/lib.rs:33:22:
called `Result::unwrap()` on an `Err` value: Any { .. }

2025-01-01 02:11:13.078 [info]    0: ruff_server::server::Server::run::{{closure}
2025-01-01 02:11:13.078 [info] }
   1: std::panicking::rust_panic_with_hook
   2: std::panicking::begin_panic_handler::{{closure}}
   3
2025-01-01 02:11:13.078 [info] : std::sys::backtrace::__rust_end_short_backtrace
   4: rust_begin_unwind
   5: core::panicking::panic_fmt

2025-01-01 02:11:13.078 [info]    6: core::result::unwrap_failed
   7: ruff_server::server::Server::run
 
2025-01-01 02:11:13.079 [info]   8: ruff::run
   9: ruff::main
  10: std::sys::
2025-01-01 02:11:13.079 [info] backtrace::__rust_begin_short_backtrace
  11: std::rt::lang_start::{{closure}}
  12: std::rt
2025-01-01 02:11:13.079 [info] ::lang_start_internal
  13: main
  14: <unknown>
  15: __libc_start_main
  16: 
2025-01-01 02:11:13.079 [info] <unknown>


2025-01-01 02:11:13.085 [info] [Info  - 2:11:13 AM] Connection to server got closed. Server will restart.
2025-01-01 02:11:13.085 [info] true
2025-01-01 15:23:36.556 [info] panicked at crates/ruff_server/src/server/api/requests/hover.rs:36:10:
hover should only be called on text documents or notebook cells

2025-01-01 15:23:36.559 [info]    0: ruff_server::server::Server::run::{{closure}}
   1: std::panicking::rust_panic_with_hook
   2: std::panicking::begin_panic_handler::{{closure}}

2025-01-01 15:23:36.559 [info]    3: std::sys::backtrace::__rust_end_short_backtrace
   4: rust_begin_unwind
   5: core::panicking::panic_fmt
   6: core::option::expect_failed
   7: <ruff_server::server::api::requests::hover::Hover as ruff_server::server::api::traits::BackgroundDocumentRequestHandler>::run_with_snapshot
   8: core::
2025-01-01 15:23:36.559 [info] ops::function::FnOnce::call_once{{vtable.shim}}
   9: core::ops::function::FnOnce::call_once{{vtable.shim}}
  10: std::sys::backtrace::__rust_begin_short_backtrace
2025-01-01 15:23:36.559 [info] 
  11: core::ops::function::FnOnce::call_once{{vtable.shim}}
  12: std::sys::pal::unix::thread::Thread::new::thread_start
2025-01-01 15:23:36.559 [info] 
  13: <unknown>
  14: <unknown>


2025-01-01 15:27:40.353 [info] panicked at crates/ruff_server/src/server/api/requests/hover.rs:36:10:
hover should only be called on text documents or notebook cells
   0: 
2025-01-01 15:27:40.353 [info] ruff_server::server::Server::run::{{closure}}
   1: std::panicking::rust_panic_with_hook
   2: std::panicking::begin_panic_handler::{{closure}}
   3: std::sys::backtrace::__rust_end_short_backtrace
   4: rust_begin_unwind
   5: core::panicking::panic_fmt
   6: core::option::expect_failed
   7: <ruff_server::server::api::requests::hover::Hover as ruff_server::server::api::traits::BackgroundDocumentRequestHandler>::run_with_snapshot
   8: core::ops::function::FnOnce::call_once{{vtable.shim}}
   9: core
2025-01-01 15:27:40.353 [info] ::ops::function::FnOnce::call_once{{vtable.shim}}
  10: std::sys::backtrace::__rust_begin_short_backtrace
  11: core::ops::function::FnOnce::call_once{{vtable.shim}}
  12: std::sys::pal::unix::thread::Thread::new::thread_start
  13: <unknown>
  14: <unknown>


2025-01-01 15:27:42.808 [info] panicked at crates/ruff_server/src/server/api/requests/hover.rs:36:10:
hover should only be called on text documents or notebook cells
 
2025-01-01 15:27:42.808 [info]   0: ruff_server::server::Server::run::{{closure}}
   1: std::panicking::rust_panic_with_hook
   2: std::panicking::begin_panic_handler::{{closure}}
   3: std::sys::backtrace::__rust_end_short_backtrace
   4: rust_begin_unwind
   5: core
2025-01-01 15:27:42.808 [info] ::panicking::panic_fmt
   6: core::option::expect_failed
   7: <ruff_server::server::api::requests::hover::Hover as ruff_server::server::api
2025-01-01 15:27:42.808 [info] ::traits::BackgroundDocumentRequestHandler>::run_with_snapshot
   8: core::ops::function::FnOnce::call_once{{vtable.shim}}

2025-01-01 15:27:42.808 [info]    9: core::ops::function::FnOnce::call_once{{vtable.shim}}
  10: std::sys
2025-01-01 15:27:42.808 [info] ::backtrace::__rust_begin_short_backtrace
  11: core::ops::function::FnOnce::call_once{{vtable.shim}}
  
2025-01-01 15:27:42.808 [info] 12: std::sys::pal::unix::thread::Thread::new::thread_start
  13: <unknown>
  14: 
2025-01-01 15:27:42.808 [info] <unknown>


2025-01-01 15:27:43.930 [info] panicked at crates/ruff_server/src/server/api/requests/hover.rs:36:10:
hover should only be called on text documents or notebook cells
   0: ruff_server::server::Server::run::{{closure}
2025-01-01 15:27:43.930 [info] }
   1: std::panicking::rust_panic_with_hook
   2: std::panicking::begin_panic_handler::{{closure}}
   3: std::sys::backtrace::__rust_end_short_backtrace
   4: rust_begin_unwind
   5: core::panicking::panic_fmt
   6
2025-01-01 15:27:43.930 [info] : core::option::expect_failed
   7: <ruff_server::server::api::requests::hover::Hover as ruff_server::server::api::traits::BackgroundDocumentRequestHandler
2025-01-01 15:27:43.930 [info] >::run_with_snapshot
   8: core::ops::function::FnOnce::call_once{{vtable.shim}}
   9: core::
2025-01-01 15:27:43.930 [info] ops::function::FnOnce::call_once{{vtable.shim}}
  10: std::sys::backtrace::__rust_begin_short_backtrace
  11: core
2025-01-01 15:27:43.930 [info] ::ops::function::FnOnce::call_once{{vtable.shim}}
  12: std::sys::pal::unix::thread::Thread::new
2025-01-01 15:27:43.930 [info] ::thread_start
  13: <unknown>
  14: <unknown>


2025-01-01 15:27:44.624 [info] panicked at crates/ruff_server/src/server/api/requests/hover.rs:36:10:
hover should only be called on text documents or notebook cells

2025-01-01 15:27:44.624 [info]    0: ruff_server::server::Server::run::{{closure}}
   1: std::panicking::rust_panic_with_hook
   2: std::panicking::begin_panic_handler::{{closure}}
   3: std::sys::backtrace::__rust_end_short_backtrace
   4: rust_begin_unwind
   5: core::panicking::panic_fmt
   6: core::option::expect_failed
   7: <ruff_server::server::api::requests::hover::
2025-01-01 15:27:44.624 [info] Hover as ruff_server::server::api::traits::BackgroundDocumentRequestHandler>::run_with_snapshot
   8: core::ops::function::FnOnce::call_once{{vtable.shim}}
   9: core::ops::function::FnOnce::call_once{{vtable.shim}}
  10: std::sys::backtrace::__rust_begin_short_backtrace
  11: core::ops::function::FnOnce::call_once{{
2025-01-01 15:27:44.624 [info] vtable.shim}}
  12: std::sys::pal::unix::thread::Thread::new::thread_start
  13: <unknown>
  14: <unknown>


2025-01-01 16:39:31.481 [info] panicked at crates/ruff_source_file/src/line_index.rs:176:13:
index out of bounds: the len is 1 but the index is 2

2025-01-01 16:39:31.481 [info]    0: ruff_server::server::Server::run::{{closure}}
   1: std::panicking::rust_panic_with_hook
   2: std::panicking::begin_panic_handler::{{closure}}
   3: std::sys::backtrace::__rust_end_short_backtrace
   4: rust_begin_unwind
   5: core::panicking::panic_fmt
   6: core::panicking::panic_bounds_check
   7: 
2025-01-01 16:39:31.481 [info] ruff_source_file::line_index::LineIndex::line_range
   8: <ruff_server::server::api::requests::hover::Hover as ruff_server::server::api::traits::BackgroundDocumentRequestHandler>::run_with_snapshot
   9: core::ops::function::FnOnce::call_once{{vtable.shim}}
  10: core::ops::function::FnOnce::call_once{{vtable.shim}}

2025-01-01 16:39:31.481 [info]   11: std::sys::backtrace::__rust_begin_short_backtrace
  12: core::ops::function::FnOnce::call_once{{vtable.shim}}
  13: std::sys::pal::unix::thread::Thread::new::thread_start
  14: <unknown>
  
2025-01-01 16:39:31.481 [info] 15: <unknown>


2025-01-01 16:39:31.685 [info] panicked at crates/ruff_source_file/src/line_index.rs:176:13:
index out of bounds: the len is 1 but the index is 2

2025-01-01 16:39:31.685 [info]    0: ruff_server::server::Server::run::{{closure}}
   1: std::panicking::rust_panic_with_hook
   2: std::panicking::begin_panic_handler::{{closure}
2025-01-01 16:39:31.685 [info] }
   3: std::sys::backtrace::__rust_end_short_backtrace
   4: rust_begin_unwind
   5: core::panicking::panic_fmt
   6
2025-01-01 16:39:31.685 [info] : core::panicking::panic_bounds_check
   7: ruff_source_file::line_index::LineIndex::line_range
   8: <ruff_server::server::api::requests
2025-01-01 16:39:31.685 [info] ::hover::Hover as ruff_server::server::api::traits::BackgroundDocumentRequestHandler>::run_with_snapshot
   9: core::ops::function::FnOnce
2025-01-01 16:39:31.685 [info] ::call_once{{vtable.shim}}
  10: core::ops::function::FnOnce::call_once{{vtable.shim}}
 
2025-01-01 16:39:31.685 [info]  11: std::sys::backtrace::__rust_begin_short_backtrace
  12: core::ops::function::FnOnce::call_once{{vtable.shim}
2025-01-01 16:39:31.685 [info] }
  13: std::sys::pal::unix::thread::Thread::new::thread_start
  14: <unknown>

2025-01-01 16:39:31.685 [info]   15: <unknown>


2025-01-01 16:51:32.776 [info] panicked at crates/ruff_server/src/server/api/requests/hover.rs:36:10:
hover should only be called on text documents or notebook cells

2025-01-01 16:51:32.776 [info]    0: ruff_server::server::Server::run::{{closure}}
   1: std::panicking::rust_panic_with_hook
   2: std::panicking::begin_panic_handler::{{closure}}
   3: std::sys::backtrace::__rust_end_short_backtrace
   4: rust_begin_unwind
   5: core::panicking::panic_fmt
2025-01-01 16:51:32.776 [info] 
   6: core::option::expect_failed
   7: <ruff_server::server::api::requests::hover::Hover as ruff_server::server::api::traits::BackgroundDocumentRequestHandler>::run_with_snapshot
2025-01-01 16:51:32.776 [info] 
   8: core::ops::function::FnOnce::call_once{{vtable.shim}}
   9: core::ops::function::FnOnce::call_once{{vtable.shim}}
2025-01-01 16:51:32.776 [info] 
  10: std::sys::backtrace::__rust_begin_short_backtrace
  11: core::ops::function::FnOnce::call_once{{vtable.shim}}

2025-01-01 16:51:32.776 [info]   12: std::sys::pal::unix::thread::Thread::new::thread_start
  13: <unknown>
  14: <unknown>


2025-01-01 16:51:57.915 [info] panicked at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/alloc/src/string.rs:1919:29:
assertion failed: self.is_char_boundary(n)
   0: ruff_server::server::Server::run::{{closure}}
   1: std::panicking::rust_panic_with_hook
   2: std::panicking::begin_panic_handler::{{closure}}
   3: std::sys::backtrace::__rust_end_short_backtrace
   4: rust_begin_unwind
   5: core::panicking::panic_fmt
   6: core::panicking::panic
   7: alloc::string
2025-01-01 16:51:57.915 [info] ::String::replace_range
   8: ruff_server::edit::text_document::TextDocument::apply_changes
   9: ruff_server::edit::notebook::NotebookDocument::update
  10: ruff_server::session::index::Index::update_notebook_document
  11: <ruff_server::server::api::notifications::did_change_notebook::DidChangeNotebook as ruff_server::server::api::traits::SyncNotificationHandler>::run
  12: core::ops::function::FnOnce::call_once{{vtable.shim}}
  13: std::sys::backtrace::__rust_begin_short_backtrace
  14: core::ops::function::FnOnce::call_once{{vtable.shim}}
  15: std::sys::pal::unix::thread::Thread::new::thread_start
  16: <unknown>
  17: <unknown>


2025-01-01 16:51:57.918 [info] panicked at /root/.cargo/registry/src/index.crates.io-6f17d22bba15001f/jod-thread-0.1.2/src/lib.rs:33:22:
called `Result::unwrap()` on an `Err` value: Any { .. }

2025-01-01 16:51:57.918 [info]    0: ruff_server::server::Server::run::{{closure}}
   1: std::panicking::rust_panic_with_hook
   2: std::panicking::begin_panic_handler::{{closure}}
  
2025-01-01 16:51:57.918 [info]  3: std::sys::backtrace::__rust_end_short_backtrace
   4: rust_begin_unwind
   5: core::panicking::panic_fmt
   6: core::result::unwrap_failed
   7: ruff_server::
2025-01-01 16:51:57.918 [info] server::Server::run
   8: ruff::run
   9: ruff::main
  10: std::sys::backtrace::__rust_begin_short_backtrace
  11: std::rt::lang_start::
2025-01-01 16:51:57.919 [info] {{closure}}
  12: std::rt::lang_start_internal
  13: main
  14: <unknown>
  15: __libc_start_main
  16: <unknown>


2025-01-01 16:51:57.923 [info] [Info  - 4:51:57 PM] Connection to server got closed. Server will restart.
2025-01-01 16:51:57.923 [info] true

[dhruvmanila]

Thanks for sharing the traceback. I'm thinking of updating the panic hook to somehow be able to include additional information especially the request and the payload that triggered the panic. That would really help in debugging panics in general. I'm sure if that's possible but I'm going to try to do that today.