resolve: Report more early resolution ambiguities for imports

[petrochenkov]

The new ambiguities are reported when the import's visibility is ambiguous and may depend on the resolution/expansion order.

[rustbot]

r? @lcnr

rustbot has assigned @lcnr.
They will have a look at your PR within the next two weeks and either review your PR or reassign to another reviewer.

Use r? to explicitly pick a reviewer

[petrochenkov]

@bors try

[petrochenkov]

@craterbot run mode=check-only p=1 crates=https://crater-reports.s3.amazonaws.com/pr-149145/retry-regressed-list.txt

[rust-bors]

☀️ Try build successful (CI)
Build commit: ce3348c (ce3348c21531b911ca5aadbbbe7ad63a1bc4c382, parent: 8202d110516c6bd87cee375e9a9b774db499015c)

[petrochenkov]

@craterbot run mode=check-only p=1 crates=https://crater-reports.s3.amazonaws.com/pr-149145/retry-regressed-list.txt

[craterbot]

👌 Experiment pr-149596 created and queued.
🤖 Automatically detected try build ce3348c
🔍 You can check out the queue and this experiment's details.

ℹ️ Crater is a tool to run experiments across parts of the Rust ecosystem. Learn more

[craterbot]

🚧 Experiment pr-149596 is now running

ℹ️ Crater is a tool to run experiments across parts of the Rust ecosystem. Learn more

[craterbot]

🎉 Experiment pr-149596 is completed!
📊 359 regressed and 0 fixed (3583 total)
📊 218 spurious results on the retry-regessed-list.txt, consider a retry¹ if this is a significant amount.
📰 Open the summary report.

⚠️ If you notice any spurious failure please add them to the denylist!
ℹ️ Crater is a tool to run experiments across parts of the Rust ecosystem. Learn more

Footnotes

1. re-run the experiment with crates=https://crater-reports.s3.amazonaws.com/pr-149596/retry-regressed-list.txt ↩

[rustbot]

This PR was rebased onto a different main commit. Here's a range-diff highlighting what actually changed.

Rebasing is a normal part of keeping PRs up to date, so no action is needed—this note is just to help reviewers.

[petrochenkov]

@bors try

[rust-bors]

☀️ Try build successful (CI)
Build commit: e617cc9 (e617cc9342f64b2efdd8eeb91834ef450a15825f, parent: 29e035e1728488dce5a03daa527ab1091d1cda47)