regression: ICE no resolution found for import

[INFO] [stdout] error: internal compiler error: no resolution for an import
[INFO] [stdout]  --> tests/config_handler_tests.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use hyper::StatusCode;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: delayed at compiler/rustc_ast_lowering/src/lib.rs:760:24

I am having trouble reproducing this issue. When I compiled ohttp-gateway on stable rust 1.90 on windows, I got the following error.

error[E0464]: multiple candidates for rlib dependency hyper found

Note that ohttp-gateway specifies two different versions for hyper, one in [dependencies], and one in [dev-dependencies].

I'm confused on how it compiled on stable in crater in the first place. Is there some odd setup I need?

Edit: I'm told that it compiles on stable in Linux? Weird.......

This does compile on stable on Linux, and ICEs on beta, but if you remove everything but the two conflicting deps, it does give the error about duplicated rlib's, both on stable and beta:

error[E0464]: multiple candidates for `rlib` dependency `hyper` found
 --> tests/config_handler_tests.rs:1:5
  |
1 | use hyper::StatusCode;
  |     ^^^^^
  |
  = note: candidate #1: /home/ash/Downloads/ohttp-gateway/target/debug/deps/libhyper-08a7d65fae167315.rlib
  = note: candidate #2: /home/ash/Downloads/ohttp-gateway/target/debug/deps/libhyper-a6c863e938beb4b9.rlib

My guess is: There's a preexisting bug in stable that fails to detect duplicate rlibs, but only in some conditions, and not on windows. This bug was previously hidden, and manifested as an ICE on beta due to some additional check performed.

here is bisect for this regression

searched nightlies: from nightly-2025-07-01 to nightly-2025-10-12
regressed nightly: nightly-2025-09-02
searched commit range: 07d246f...7aef4be
regressed commit: be4e9b7

bisected with cargo-bisect-rustc v0.6.10

Host triple: aarch64-unknown-linux-gnu
Reproduce with:

cargo bisect-rustc --start=2025-07-01 --end=2025-10-12 --regress=ice -- test --no-run

presumably #146004

Auto merge of #149273 - bjorn3:crate_locator_improvements, r=petroche…

Auto merge of rust-lang#149273 - bjorn3:crate_locator_improvements, r…

Auto merge of #149273 - bjorn3:crate_locator_improvements, r=petroche…

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regression: ICE no resolution found for import #147966

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regression: ICE no resolution found for import #147966

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theemathas commented on Oct 23, 2025

frogtd commented on Oct 23, 2025

theemathas commented on Oct 23, 2025

Kivooeo commented on Oct 24, 2025

Kivooeo commented on Oct 24, 2025

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