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Merged
merged 1 commit into from
Oct 8, 2020
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Upgrade to tracing-subscriber 0.2.13 #77678

merged 1 commit into from
Oct 8, 2020

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jyn514
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@jyn514 jyn514 commented Oct 7, 2020

The primary motivation is to get the changes from
tokio-rs/tracing#990. Example output:

$ RUSTDOC_LOG=debug rustdoc +rustc2
warning: some trace filter directives would enable traces that are disabled statically
 | `debug` would enable the DEBUG level for all targets
 = note: the static max level is `info`
 = help: to enable DEBUG logging, remove the `max_level_info` feature

r? @Mark-Simulacrum
cc @hawkw ❤️

@jyn514 jyn514 added the T-bootstrap Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap) label Oct 7, 2020
@rust-highfive rust-highfive added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Oct 7, 2020
@jyn514 jyn514 changed the title Upgrade to tracing 0.2.13 Upgrade to tracing-subscriber 0.2.13 Oct 7, 2020
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jyn514 commented Oct 7, 2020

This found a bug in the test suite!


---- [ui] ui/issues/issue-18075.rs stdout ----
normalized stderr:
warning: some trace filter directives would enable traces that are disabled statically
 | `rustc::middle=debug` would enable the DEBUG level for the `rustc::middle` target
 = note: the static max level is `info`
 = help: to enable DEBUG logging, remove the `max_level_info` feature

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Looking at that test, the proposed change makes it useless, and it could just be deleted. I think we should do that.

(#18075 is the issue it was tracking, and that issue looks unlikely to reoccur anyway).

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jyn514 commented Oct 7, 2020

I could change it to rustc_middle=info instead if that helps - that would have effectively the previous behavior but without the warning from tracing.

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I don't think that helps personally, the test is just likely no longer useful. We can prune it.

@jyn514
Upgrade to tracing 0.2.13
8b22d07 
The primary motivation is to get the changes from
tokio-rs/tracing#990. Example output:

```
$ RUSTDOC_LOG=debug rustdoc +rustc2
warning: some trace filter directives would enable traces that are disabled statically
 | `debug` would enable the DEBUG level for all targets
 = note: the static max level is `info`
 = help: to enable DEBUG logging, remove the `max_level_info` feature
```

- Remove useless test

  This was testing for an ICE when passing `RUST_LOG=rustc_middle`.  I
  noticed it because it started giving the tracing warning (because tests
  are not run with debug-logging enabled). Since this bug seems unlikely
  to re-occur, I just removed it altogether.
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jyn514 commented Oct 8, 2020

Ok, I removed the unhelpful test.

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I think this is good -- @bors r+

That said, it would be great if searching for max_level_info or "some trace filter directives would enable traces that are disabled statically" in CONTRIBUTING.md or rustc-dev-guide would immediately yield results on what to do -- right now that message is likely helpful in the sense that you know you have a problem, but you still don't know what to do to fix it :)

Maybe we could include those two things in the config.toml.example by the debug-logging flag, too, which would make ripgrep in the repository for them yield something useful too.

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bors commented Oct 8, 2020

📌 Commit 8b22d07 has been approved by Mark-Simulacrum

@bors bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Oct 8, 2020
@jyn514 jyn514 mentioned this pull request Oct 8, 2020
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bors commented Oct 8, 2020

⌛ Testing commit 8b22d07 with merge ccea570...

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bors commented Oct 8, 2020

☀️ Test successful - checks-actions, checks-azure
Approved by: Mark-Simulacrum
Pushing ccea570 to master...

@bors bors added the merged-by-bors This PR was explicitly merged by bors. label Oct 8, 2020
@bors bors merged commit ccea570 into rust-lang:master Oct 8, 2020
@rustbot rustbot added this to the 1.49.0 milestone Oct 8, 2020
@jyn514 jyn514 deleted the tracing branch October 8, 2020 15:54
Dylan-DPC-zz pushed a commit to Dylan-DPC-zz/rust that referenced this pull request Oct 8, 2020
@Dylan-DPC
Rollup merge of rust-lang#77701 - jyn514:debug-logging, r=Mark-Simula…
4b99066 
…crum

Make `max_log_info` easily greppable (for figuring out why debug logging is disabled)

Follow-up to rust-lang#77678 (comment). I'll make a PR to the dev-guide shortly changing `debug = true` to `debug-logging = true` and using this text.

Ideally wouldn't be merged before rust-lang#77678, but it practice it won't hurt anything.

r? @Mark-Simulacrum
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