Downloading Profile Data From Detailed Query Page Fails with 500

[rylev]

Visiting a detailed query page and trying to download the profile data in some form other than "raw" fails with a 500.

To Reporduce

• Go to https://perf.rust-lang.org/detailed-query.html?commit=714be566bc534eb3fda0665a281f12b58ab61f0c&benchmark=externs-debug&run_name=incr-unchanged
• Click on one of the profile data links at the top of the page (e.g., "flamegraph")
• It will 500

This does not seem to happen for all detailed query pages.

[lqd]

IIUC this is related to rustc's recent update of measureme, whose format is not compatible with the previous format. The analyzeme, crox and flamegraph tools currently used in rustc-perf are using the older format. The goal of PR #788 is to make it possible to use either versions depending on the format of the recorded profile.

Until that is completed, raw downloads still work (as they are not processed by the analyzeme tools) so you can, say, compute the flamegraph locally, but the flamegraph, crox json, and speedscope and FF profiler links on the detailed query pages won't work.

[Mark-Simulacrum]

Yep, that's correct. I've been busy with other projects these last few weeks unfortunately so haven't found the time to focus on this, but hopefully that'll clear up soon.

[tgnottingham]

Fixed by #978. Technically doesn't support the old self-profile format, but that's probably not going to be an issue very often. If it becomes one, we can reopen.