Buildbot failure in include-what-you-use on ubuntu-20_04-builder

[buil...@include-what-you-use.org]

The Buildbot has detected a failed build on builder ubuntu-20_04-builder while building iwyu.
Full details are available at:
http://buildbot.include-what-you-use.org:8010/#builders/2/builds/305

Buildbot URL: http://buildbot.include-what-you-use.org:8010/

Worker for this Build: ubuntu-20_04-bot-ephemeral

Build Reason: <unknown>
Blamelist: Kim Gräsman <kim.g...@gmail.com>

BUILD FAILED: failed test IWYU (failure)

Sincerely,
-The Buildbot