Thread 'Worker' panicked at "Bad offset"

rust-analyzer version: 0.4.1775-standalone

rustc version: rustc 1.74.1 (a28077b28 2023-12-04)

rust-analyzer suddenly showed a crash notification. Unfortunately it's unclear how I even triggered it or how I could reproduce it again. Maybe you can still glean something from the output.

Panic context:
> 
version: 0.4.1775-standalone
request: inlayHint/resolve InlayHint {
    position: Position {
        line: 174,
        character: 26,
    },
    label: LabelParts(
        [
            InlayHintLabelPart {
                value: "init:",
                tooltip: None,
                location: None,
                command: None,
            },
        ],
    ),
    kind: Some(
        Parameter,
    ),
    text_edits: None,
    tooltip: None,
    padding_left: Some(
        false,
    ),
    padding_right: Some(
        true,
    ),
    data: Some(
        Object {
            "file_id": Number(0),
        },
    ),
}

thread 'Worker' panicked at /github/home/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rowan-0.15.15/src/cursor.rs:751:9:
Bad offset: range 0..4584 offset 4602
stack backtrace:
   0: rust_begin_unwind
             at /rustc/a28077b28a02b92985b3a3faecf92813155f1ea1/library/std/src/panicking.rs:597:5
   1: core::panicking::panic_fmt
             at /rustc/a28077b28a02b92985b3a3faecf92813155f1ea1/library/core/src/panicking.rs:72:14
   2: rowan::cursor::SyntaxNode::token_at_offset
   3: ide::inlay_hints::inlay_hints
   4: salsa::Cancelled::catch
   5: ide::Analysis::inlay_hints
   6: rust_analyzer::handlers::request::handle_inlay_hints_resolve
   7: std::panicking::try
   8: core::ops::function::FnOnce::call_once{{vtable.shim}}
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
Panic context:
> 
version: 0.4.1775-standalone
request: inlayHint/resolve InlayHint {
    position: Position {
        line: 173,
        character: 30,
    },
    label: LabelParts(
        [
            InlayHintLabelPart {
                value: ": &&",
                tooltip: None,
                location: None,
                command: None,
            },
            InlayHintLabelPart {
                value: "PartNumber",
                tooltip: None,
                location: None,
                command: None,
            },
            InlayHintLabelPart {
                value: "",
                tooltip: None,
                location: None,
                command: None,
            },
        ],
    ),
    kind: Some(
        Type,
    ),
    text_edits: None,
    tooltip: None,
    padding_left: Some(
        false,
    ),
    padding_right: Some(
        false,
    ),
    data: Some(
        Object {
            "file_id": Number(0),
        },
    ),
}

thread 'Worker' panicked at /github/home/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rowan-0.15.15/src/cursor.rs:751:9:
Bad offset: range 0..4584 offset 4587
stack backtrace:
   0: rust_begin_unwind
             at /rustc/a28077b28a02b92985b3a3faecf92813155f1ea1/library/std/src/panicking.rs:597:5
   1: core::panicking::panic_fmt
             at /rustc/a28077b28a02b92985b3a3faecf92813155f1ea1/library/core/src/panicking.rs:72:14
   2: rowan::cursor::SyntaxNode::token_at_offset
   3: ide::inlay_hints::inlay_hints
   4: salsa::Cancelled::catch
   5: ide::Analysis::inlay_hints
   6: rust_analyzer::handlers::request::handle_inlay_hints_resolve
   7: std::panicking::try
   8: core::ops::function::FnOnce::call_once{{vtable.shim}}
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
[Error - 8:07:33 PM] Request inlayHint/resolve failed.
  Message: request handler panicked: Bad offset: range 0..4584 offset 4587
  Code: -32603 
Panic context:
> 
version: 0.4.1775-standalone
request: inlayHint/resolve InlayHint {
    position: Position {
        line: 173,
        character: 30,
    },
    label: LabelParts(
        [
            InlayHintLabelPart {
                value: ": &&",
                tooltip: None,
                location: None,
                command: None,
            },
            InlayHintLabelPart {
                value: "PartNumber",
                tooltip: None,
                location: None,
                command: None,
            },
            InlayHintLabelPart {
                value: "",
                tooltip: None,
                location: None,
                command: None,
            },
        ],
    ),
    kind: Some(
        Type,
    ),
    text_edits: None,
    tooltip: None,
    padding_left: Some(
        false,
    ),
    padding_right: Some(
        false,
    ),
    data: Some(
        Object {
            "file_id": Number(0),
        },
    ),
}

thread 'Worker' panicked at /github/home/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rowan-0.15.15/src/cursor.rs:751:9:
Bad offset: range 0..4584 offset 4587
stack backtrace:
   0: rust_begin_unwind
             at /rustc/a28077b28a02b92985b3a3faecf92813155f1ea1/library/std/src/panicking.rs:597:5
   1: core::panicking::panic_fmt
             at /rustc/a28077b28a02b92985b3a3faecf92813155f1ea1/library/core/src/panicking.rs:72:14
   2: rowan::cursor::SyntaxNode::token_at_offset
   3: ide::inlay_hints::inlay_hints
   4: salsa::Cancelled::catch
   5: ide::Analysis::inlay_hints
   6: rust_analyzer::handlers::request::handle_inlay_hints_resolve
   7: std::panicking::try
   8: core::ops::function::FnOnce::call_once{{vtable.shim}}
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
[Error - 8:07:33 PM] Request inlayHint/resolve failed.
  Message: request handler panicked: Bad offset: range 0..4584 offset 4587
  Code: -32603 
Panic context:
> 
version: 0.4.1775-standalone
request: inlayHint/resolve InlayHint {
    position: Position {
        line: 173,
        character: 30,
    },
    label: LabelParts(
        [
            InlayHintLabelPart {
                value: ": &&",
                tooltip: None,
                location: None,
                command: None,
            },
            InlayHintLabelPart {
                value: "PartNumber",
                tooltip: None,
                location: None,
                command: None,
            },
            InlayHintLabelPart {
                value: "",
                tooltip: None,
                location: None,
                command: None,
            },
        ],
    ),
    kind: Some(
        Type,
    ),
    text_edits: None,
    tooltip: None,
    padding_left: Some(
        false,
    ),
    padding_right: Some(
        false,
    ),
    data: Some(
        Object {
            "file_id": Number(0),
        },
    ),
}

thread 'Worker' panicked at /github/home/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rowan-0.15.15/src/cursor.rs:751:9:
Bad offset: range 0..4584 offset 4587
stack backtrace:
   0: rust_begin_unwind
             at /rustc/a28077b28a02b92985b3a3faecf92813155f1ea1/library/std/src/panicking.rs:597:5
   1: core::panicking::panic_fmt
             at /rustc/a28077b28a02b92985b3a3faecf92813155f1ea1/library/core/src/panicking.rs:72:14
   2: rowan::cursor::SyntaxNode::token_at_offset
   3: ide::inlay_hints::inlay_hints
   4: salsa::Cancelled::catch
   5: ide::Analysis::inlay_hints
   6: rust_analyzer::handlers::request::handle_inlay_hints_resolve
   7: std::panicking::try
   8: core::ops::function::FnOnce::call_once{{vtable.shim}}
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
[Error - 8:07:33 PM] Request inlayHint/resolve failed.
  Message: request handler panicked: Bad offset: range 0..4584 offset 4587
  Code: -32603 

Start with the reported inlayHint/resolve path through ide::inlay_hints and rust_analyzer::handlers::request::handle_inlay_hints_resolve, then inspect rowan's cursor.rs at line 751. The report has no reproduction steps or test location, so first determine how the reported offsets exceed the syntax-node range. Done means the request no longer panics with Bad offset for the affected case.