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1.96 beta rustdoc regression: "... is a virtual manifest, but this command requires running against an actual package in this workspace" #155992

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1.96 beta rustdoc regression: "... is a virtual manifest, but this command requires running against an actual package in this workspace"#155992
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C-bugCategory: This is a bug.I-prioritizeIssue needs a team member to assess the impact. Will be replaced by P-{low,medium,high,critical}T-cargoRelevant to the cargo team, which will review and decide on the PR/issue.T-infraRelevant to the infrastructure team, which will review and decide on the PR/issue.T-rustdocRelevant to the rustdoc team, which will review and decide on the PR/issue.needs-triageThis issue may need triage. Remove when done. See docs forge.rust-lang.org/release/issue-triagingregression-from-stable-to-stablePerformance or correctness regression from one stable version to another.
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1.96.0

Description

@theemathas
theemathas
opened on Apr 30, 2026

Regression found by the 1.96 beta rustdoc crater run.

[INFO] [stderr] error: manifest path `/opt/rustwide/workdir/Cargo.toml` is a virtual manifest, but this command requires running against an actual package in this workspace

https://crater-reports.s3.amazonaws.com/beta-1.96-rustdoc-2/beta-2026-04-21/gh/catuhana.dirpc/log.txt

For comparison, here's the logs for the run using the 1.95 stable compiler: https://crater-reports.s3.amazonaws.com/beta-1.96-rustdoc-2/1.95.0/gh/catuhana.dirpc/log.txt

Activity

  1. theemathas
    added
    T-rustdocRelevant to the rustdoc team, which will review and decide on the PR/issue.
    regression-from-stable-to-betaPerformance or correctness regression from stable to beta.
    T-cargoRelevant to the cargo team, which will review and decide on the PR/issue.
    C-bugCategory: This is a bug.
    on Apr 30, 2026
  2. rustbot
    added
    needs-triageThis issue may need triage. Remove when done. See docs forge.rust-lang.org/release/issue-triaging
    I-prioritizeIssue needs a team member to assess the impact. Will be replaced by P-{low,medium,high,critical}
    on Apr 30, 2026
  3. theemathas
    added
    T-infraRelevant to the infrastructure team, which will review and decide on the PR/issue.
    on Apr 30, 2026
  4. theemathas
    added a parent issue on Apr 30, 2026

  5. weihanglo commented on May 4, 2026

    @weihanglo
    weihanglo
    on May 4, 2026
    Member

    crater-reports.s3.amazonaws.com/beta-1.96-rustdoc-2/beta-2026-04-21/gh/catuhana.dirpc/log.txt

    Were they the same script? Look like the second one run additionally a cargo rustdoc.

  6. theemathas commented on May 4, 2026

    @theemathas
    theemathas
    on May 4, 2026
    ContributorAuthor

    @weihanglo It is possible that this is a Crater bug. See discussion on zulip

  7. cuviper
    added this to the 1.96.0 milestone on May 26, 2026
  8. Mark-Simulacrum
    added
    regression-from-stable-to-stablePerformance or correctness regression from one stable version to another.
    and removed
    regression-from-stable-to-betaPerformance or correctness regression from stable to beta.
    on Jul 3, 2026
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    C-bugCategory: This is a bug.I-prioritizeIssue needs a team member to assess the impact. Will be replaced by P-{low,medium,high,critical}T-cargoRelevant to the cargo team, which will review and decide on the PR/issue.T-infraRelevant to the infrastructure team, which will review and decide on the PR/issue.T-rustdocRelevant to the rustdoc team, which will review and decide on the PR/issue.needs-triageThis issue may need triage. Remove when done. See docs forge.rust-lang.org/release/issue-triagingregression-from-stable-to-stablePerformance or correctness regression from one stable version to another.

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