Buildbot failure in Wildebeest Builder on whole buildset

[buildbot@builder.wildebeest.org]

The Buildbot has detected a failed build on builder whole buildset while building libabigail.
Full details are available at:
    https://builder.wildebeest.org/buildbot/#builders/17/builds/40

Buildbot URL: https://builder.wildebeest.org/buildbot/

Worker for this Build: centos-aarch64

Build Reason: <unknown>
Blamelist: Xiao Jia via libabigail <libabigail@sourceware.org>

BUILD FAILED: failed 'autoreconf -f ...' (failure)

Sincerely,
 -The Buildbot