rust-lang / rust-lang/rust

regression: reached recursion limit

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P-medium regression-from-stable-to-stable T-compiler
Dominant language
Rust
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Description

[INFO] [stdout] error: reached the recursion limit while instantiating `<(&mut combine::parser::sequence::Skip<combine::parser::combinator::Try<combine::parser::error::Expected<..., ...>>, ...>, ..., ...) as Parser<...>>::parse_mode::<...>`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/combine-4.6.2/src/parser/combinator.rs:236:15
[INFO] [stdout]     |
[INFO] [stdout] 236 |         match self.0.parse_mode(mode, input, state) {
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |

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First steps

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Research direction

Start with the linked Crater log and identify the reported Rust compiler version and failing Motoko parser case. Inspect the referenced combine-4.6.2 parser/combinator.rs:236:15 context, then look for a reproducible test case for the recursion-limit regression. Done means the failure is reproduced and its compiler impact or fix is documented.

Written by the indexing model from the issue text.

Assessment

Tech stack
rust
Domain
compilers
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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