☠ Buildbot (Sourceware): gcc-autoregen - failed 'git diff ...' (failure) (master)

[builder@sourceware.org]

A failed build has been detected on builder gcc-autoregen while building gcc.

Full details are available at:
    https://builder.sourceware.org/buildbot/#/builders/269/builds/14439

Build state: failed 'git diff ...' (failure)
Revision: 42046a0f5d29013b1c016ee92b28f819686ddcc0
Worker: bb1-2
Build Reason: (unknown)
Blamelist: Andrew MacLeod <amacleod@redhat.com>, Andrew Pinski <quic_apinski@quicinc.com>, David Malcolm <dmalcolm@redhat.com>, GCC Administrator <gccadmin@gcc.gnu.org>, Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>, H.J. Lu <hjl.tools@gmail.com>, Jonathan Wakely <jwakely@redhat.com>, Kwok Cheung Yeung <kcyeung@baylibre.com>, Owen Avery <powerboat9.gamer@gmail.com>, Philip Herron <herron.philip@googlemail.com>, Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>, Richard Biener <rguenther@suse.de>, Richard Sandiford <richard.sandiford@arm.com>, Uros Bizjak <ubizjak@gmail.com>, Yap Zhi Heng <yapzhhg@gmail.com>, Zhi Heng <yapzhhg@gmail.com>, hongtao.liu <hongtao.liu@intel.com>, liuhongt <hongtao.liu@intel.com>

Steps:

- 0: worker_preparation ( success )

- 1: git checkout ( success )
    Logs:
        - stdio: https://builder.sourceware.org/buildbot/#/builders/269/builds/14439/steps/1/logs/stdio

- 2: autoregen.py ( success )
    Logs:
        - stdio: https://builder.sourceware.org/buildbot/#/builders/269/builds/14439/steps/2/logs/stdio

- 3: git diff ( success )
    Logs:
        - stdio: https://builder.sourceware.org/buildbot/#/builders/269/builds/14439/steps/3/logs/stdio

- 4: mkdir objdir ( success )
    Logs:
        - stdio: https://builder.sourceware.org/buildbot/#/builders/269/builds/14439/steps/4/logs/stdio

- 5: configure ( success )
    Logs:
        - stdio: https://builder.sourceware.org/buildbot/#/builders/269/builds/14439/steps/5/logs/stdio

- 6: make html ( warnings )
    Logs:
        - stdio: https://builder.sourceware.org/buildbot/#/builders/269/builds/14439/steps/6/logs/stdio
        - warnings (145): https://builder.sourceware.org/buildbot/#/builders/269/builds/14439/steps/6/logs/warnings__145_

- 7: make regenerate-opt-urls ( success )
    Logs:
        - stdio: https://builder.sourceware.org/buildbot/#/builders/269/builds/14439/steps/7/logs/stdio

- 8: git diff_1 ( failure )
    Logs:
        - stdio: https://builder.sourceware.org/buildbot/#/builders/269/builds/14439/steps/8/logs/stdio