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Unstable Feature Usage Metrics #129485

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Unstable Feature Usage Metrics#129485
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A-metricsArea: MetricsC-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCT-compilerRelevant to the compiler team, which will review and decide on the PR/issue.T-langRelevant to the language teamT-libsRelevant to the library team, which will review and decide on the PR/issue.

Description

@yaahc
yaahc
opened on Aug 23, 2024

Unstable Feature Usage Metrics

Track unstable feature usage trends by Rust users.

Motivation

  • Support feature stabilization prioritization.
  • Helping teams know which unstable features to invest their energy into.
  • Evaluating how representative crates.io is as a sample of the rust ecosystem (will we see different patterns in crates.io feature usage vs private feature usage?)

Context

Steps / History (PROVISIONAL)

  • define the format the metrics will be stored in
  • add flag to dump unstable feature status metrics (what features exist, if they're stable or not, both for library and lang/compiler, tidy may already support this for lib features)
  • add flag to enable unstable feature usage metrics in the compiler
  • front end to display reports based on gathered usage and status metrics
  • back end to save metrics data from published crates.io crates (private data should be anonymous and stored separately once we have established the ability to gather that in a statistically relevant volume)
  • integrate with docs.rs to have it gather metrics and upload them to the backend while building newly uploaded crate versions

Activity

  1. yaahc
    added
    T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.
    A-metricsArea: Metrics
    on Aug 23, 2024
  2. rustbot
    added
    needs-triageThis issue may need triage. Remove when done. See docs forge.rust-lang.org/release/issue-triaging
    on Aug 23, 2024
  3. fmease
    added
    C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFC
    and removed
    needs-triageThis issue may need triage. Remove when done. See docs forge.rust-lang.org/release/issue-triaging
    on Aug 23, 2024
  4. matthiaskrgr
    added a commit that references this issue on Nov 21, 2024

    Rollup merge of rust-lang#130236 - yaahc:unstable-feature-usage, r=es…

    fe5403f
  5. rust-timer
    added a commit that references this issue on Nov 21, 2024

    Unrolled build for rust-lang#130236

    b1aadfd
  6. jhpratt
    added a commit that references this issue on Feb 4, 2025

    Rollup merge of rust-lang#135844 - yaahc:tidy-feature-status-dump, r=…

    648fd0e
  7. rust-timer
    added a commit that references this issue on Feb 4, 2025

    Unrolled build for rust-lang#135844

    b691044

  8. yaahc commented on Mar 3, 2025

    @yaahc
    yaahc
    on Mar 3, 2025
    MemberAuthor

    As mentioned in rust-lang/goals#260 (comment), I need to have more detailed discussions with t-libs and t-lang to discuss specifics of unstable feature usage metrics and the precise questions t-libs and t-lang would likely like to use this data to answer.

    @rustbot labels +I-libs-nominated +T-libs +I-lang-nominated +T-lang

    Related conversation: https://rust-lang.zulipchat.com/#narrow/channel/131828-t-compiler/topic/unstable.20feature.20usage.20metrics

  9. rustbot
    added
    I-lang-nominatedNominated for discussion during a lang team meeting.
    I-libs-nominatedNominated for discussion during a libs team meeting.
    T-langRelevant to the language team
    T-libsRelevant to the library team, which will review and decide on the PR/issue.
    on Mar 3, 2025
  10. jieyouxu
    added 2 commits that reference this issue on Mar 5, 2025

    Rollup merge of rust-lang#137827 - yaahc:timestamp-metrics, r=estebank

    ad4f724

    Rollup merge of rust-lang#137827 - yaahc:timestamp-metrics, r=estebank

    0f6565b
  11. compiler-errors
    added a commit that references this issue on Mar 6, 2025

    Rollup merge of rust-lang#137827 - yaahc:timestamp-metrics, r=estebank

    234a68f
  12. rust-timer
    added a commit that references this issue on Mar 7, 2025

    Unrolled build for rust-lang#137827

    bcba4b0
  13. lnicola
    added a commit that references this issue on Mar 10, 2025

    Rollup merge of #137827 - yaahc:timestamp-metrics, r=estebank

    c58270c
  14. github-actions
    added a commit that references this issue on Mar 11, 2025

    Rollup merge of #137827 - yaahc:timestamp-metrics, r=estebank

    b54f4bf
  15. traviscross
    removed
    I-lang-nominatedNominated for discussion during a lang team meeting.
    on Mar 12, 2025
  16. m-ou-se
    removed
    I-libs-nominatedNominated for discussion during a libs team meeting.
    on Apr 23, 2025
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    A-metricsArea: MetricsC-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCT-compilerRelevant to the compiler team, which will review and decide on the PR/issue.T-langRelevant to the language teamT-libsRelevant to the library team, which will review and decide on the PR/issue.

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