Show stdout from the compiler with json error mode #6674
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| Thanks for the pull request, and welcome! The Rust team is excited to review your changes, and you should hear from @alexcrichton (or someone else) soon. If any changes to this PR are deemed necessary, please add them as extra commits. This ensures that the reviewer can see what has changed since they last reviewed the code. Due to the way GitHub handles out-of-date commits, this should also make it reasonably obvious what issues have or haven't been addressed. Large or tricky changes may require several passes of review and changes. Please see the contribution instructions for more information. |
| This looks fine by me, thanks! Perhaps this should forward stdout to stdout, though? I think this may also want to go through the message-sending mechanism for the rest of Cargo as well to avoid messing up the progress bar perhaps? |
| JSON is emitted on |
| Also |
| Hm ok the progress bar is indeed just an existing bug it looks like. I still think though that we should preserve the output stream of the compiler. We switch json from stdout to stderr intentionally but that's more for Cargo's interface than anything else. |
| Fixing that code path to use |
ehuss added the S-waiting-on-author | @alexcrichton Wouldn't writing things to stdout would be a breaking change? It would break bootstrap at least since it expects only json. |
| Sounds like bootstrap should be updated then? |
| ☔ The latest upstream changes (presumably #6883) made this pull request unmergeable. Please resolve the merge conflicts. |
| stdout is now always forwarded to stdout via #6883. |
Add a RUSTC_TIME env var to time rust crates during bootstrap Blocked on rust-lang/cargo#6674 r? @michaelwoerister Example for rustc with #58507: ``` time: 0.460; rss: 94MB parsing time: 0.000; rss: 94MB attributes injection time: 0.000; rss: 94MB recursion limit time: 0.000; rss: 94MB crate injection time: 0.000; rss: 94MB plugin loading time: 0.000; rss: 94MB plugin registration time: 0.044; rss: 94MB pre ast expansion lint checks time: 1.999; rss: 316MB expand crate time: 0.000; rss: 316MB check unused macros time: 2.000; rss: 316MB expansion time: 0.000; rss: 316MB maybe building test harness time: 0.053; rss: 316MB AST validation time: 0.000; rss: 316MB maybe creating a macro crate time: 1.515; rss: 397MB name resolution time: 0.122; rss: 397MB complete gated feature checking time: 0.655; rss: 546MB lowering ast -> hir time: 0.136; rss: 550MB early lint checks time: 0.117; rss: 540MB validate hir map time: 0.606; rss: 540MB indexing hir time: 0.000; rss: 480MB load query result cache time: 0.000; rss: 478MB dep graph tcx init time: 0.000; rss: 478MB looking for entry point time: 0.001; rss: 478MB looking for plugin registrar time: 0.001; rss: 478MB looking for derive registrar time: 0.049; rss: 478MB loop checking time: 0.064; rss: 479MB attribute checking time: 0.166; rss: 484MB stability checking time: 0.699; rss: 566MB type collecting time: 0.006; rss: 566MB outlives testing time: 0.018; rss: 568MB impl wf inference time: 0.002; rss: 583MB unsafety checking time: 0.005; rss: 583MB orphan checking time: 0.227; rss: 583MB coherence checking time: 0.006; rss: 583MB variance testing time: 1.546; rss: 657MB wf checking time: 0.389; rss: 665MB item-types checking time: 13.999; rss: 837MB item-bodies checking time: 1.692; rss: 883MB rvalue promotion time: 0.067; rss: 883MB intrinsic checking time: 0.624; rss: 887MB match checking time: 0.246; rss: 889MB liveness checking time: 2.629; rss: 889MB misc checking time: 0.000; rss: 889MB borrow checking time: 16.754; rss: 1242MB MIR borrow checking time: 0.050; rss: 1242MB dumping chalk-like clauses time: 0.010; rss: 1242MB MIR effect checking time: 0.001; rss: 1242MB layout testing time: 0.829; rss: 1244MB privacy checking time: 0.183; rss: 1247MB death checking time: 0.100; rss: 1248MB unused lib feature checking time: 0.405; rss: 1250MB lint checking time: 1.518; rss: 1250MB misc checking time: 0.000; rss: 1250MB resolving dependency formats time: 2.928; rss: 1332MB write metadata time: 0.014; rss: 1332MB collecting roots time: 7.621; rss: 1488MB collecting mono items time: 7.635; rss: 1488MB monomorphization collection time: 0.557; rss: 1567MB codegen unit partitioning time: 27.971; rss: 2656MB codegen to LLVM IR time: 0.056; rss: 2656MB assert dep graph time: 0.000; rss: 2656MB serialize dep graph time: 195.414; rss: 2656MB codegen time: 0.000; rss: 329MB serialize work products time: 1.664; rss: 331MB running linker time: 1.965; rss: 331MB linking [RUSTC-TIMING] rustc test:false 950.103 ``` It doesn't really look like the times add up here.
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This allows using commands like
-Z time-passesandprintln!debugging in rustc.r? @alexcrichton