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ICE in nightly: "Failed to get crate data for crate15" when proc-macro
references a dependency in a doc comment
#120909
Comments
searched nightlies: from nightly-2024-02-08 to nightly-2024-02-09 bisected with cargo-bisect-rustc v0.6.7Host triple: x86_64-unknown-linux-gnu cargo bisect-rustc --start=2024-02-08 --end=2024-02-09 This looks similar to #120830 |
Fixed in #121167. |
We're seeing this panic in our CI as well: https://github.com/aws/aws-lc/actions/runs/7962059507/job/21734658056?pr=1440#step:13:103
I'm working on reproducing it. |
resolve: Scale back unloading of speculatively loaded crates Fixes rust-lang#120830 and fixes rust-lang#120909 while still unblocking rust-lang#117772. I cannot reproduce https://github.com/parasyte/crash-rustc as an UI test for some reason, but I tested all the cases linked above manually.
resolve: Scale back unloading of speculatively loaded crates Fixes rust-lang#120830 and fixes rust-lang#120909 while still unblocking rust-lang#117772. I cannot reproduce https://github.com/parasyte/crash-rustc as an UI test for some reason, but I tested all the cases linked above manually.
Rollup merge of rust-lang#121167 - petrochenkov:unload2, r=wesleywiser resolve: Scale back unloading of speculatively loaded crates Fixes rust-lang#120830 and fixes rust-lang#120909 while still unblocking rust-lang#117772. I cannot reproduce https://github.com/parasyte/crash-rustc as an UI test for some reason, but I tested all the cases linked above manually.
Code
Minimal repro: https://github.com/parasyte/crash-rustc
This ICE needs a specific project setup with a
proc-macro
that has a doc-comment referencing one of its crate dependencies. The git repo above is a full example, but this will work, too:Cargo.toml
lib.rs
//! [`base64`]
The error only seems to happen with crates that do not contain hyphens in the name. I don't know, I haven't really dug into it.
base64
is a popular crate, it doesn't have any dependencies, and it exhibits the crash. The git repo above has a totally empty dependency namedcrashy
, so it doesn't really matter what the dependency itself contains.Meta
rustc --version --verbose
:Error output
Backtrace
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