[Webkit-unassigned] [Bug 158137] W3C Web Platform Tests occasionally flake on the bots (Web Platform Test server fails?)

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=158137

--- Comment #4 from youenn fablet <youennf at gmail.com> ---
The error seems indeed located in wpt server.

Looking at the log, the server starts at some point to return 404 to URLs pointing to files that should exist (resources/testharnessreport.js, existing IDB test files).

The request handler is FileHandler (https://github.com/w3c/wptserve/blob/22c2f947fafa07ce26d381bf5215714067c41ae6/wptserve/handlers.py)
Whenever this part of code is raising OSError or IOError, it is converted to a 404 HTTP response.

Logging these errors may help getting additional information.
I can prepare a patch to add that logging, something like "self.logger.error(traceback.format_exc())" after line 148 in "handlers.py"

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