☠ 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/14789

Build state: failed 'git diff ...' (failure)
Revision: 9a770e52028c010f31d86d0fed3635916f5852fd
Worker: bb1-1
Build Reason: (unknown)
Blamelist: Andreas Schwab <schwab@suse.de>, Andrew Pinski <quic_apinski@quicinc.com>, GCC Administrator <gccadmin@gcc.gnu.org>, Gaius Mulley <gaiusmod2@gmail.com>, Jakub Jelinek <jakub@redhat.com>, Kito Cheng <kito.cheng@sifive.com>, Martin Jambor <mjambor@suse.cz>, Nathaniel Shead <nathanieloshead@gmail.com>, Nicolas Boulenguez <nicolas@debian.org>, Owen Avery <powerboat9.gamer@gmail.com>, Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>, Richard Biener <rguenther@suse.de>, Richard Earnshaw <rearnsha@arm.com>, Stefan Schulze Frielinghaus <stefansf@gcc.gnu.org>, Tobias Burnus <tburnus@baylibre.com>, Tomasz Kamiński <tkaminsk@redhat.com>, Ville Voutilainen <ville.voutilainen@gmail.com>, Yuao Ma <c8ef@outlook.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/14789/steps/1/logs/stdio

- 2: autoregen.py ( success )
    Logs:
        - stdio: https://builder.sourceware.org/buildbot/#/builders/269/builds/14789/steps/2/logs/stdio

- 3: git diff ( success )
    Logs:
        - stdio: https://builder.sourceware.org/buildbot/#/builders/269/builds/14789/steps/3/logs/stdio

- 4: mkdir objdir ( success )
    Logs:
        - stdio: https://builder.sourceware.org/buildbot/#/builders/269/builds/14789/steps/4/logs/stdio

- 5: configure ( success )
    Logs:
        - stdio: https://builder.sourceware.org/buildbot/#/builders/269/builds/14789/steps/5/logs/stdio

- 6: make html ( warnings )
    Logs:
        - stdio: https://builder.sourceware.org/buildbot/#/builders/269/builds/14789/steps/6/logs/stdio
        - warnings (147): https://builder.sourceware.org/buildbot/#/builders/269/builds/14789/steps/6/logs/warnings__147_

- 7: make regenerate-opt-urls ( success )
    Logs:
        - stdio: https://builder.sourceware.org/buildbot/#/builders/269/builds/14789/steps/7/logs/stdio

- 8: git diff_1 ( failure )
    Logs:
        - stdio: https://builder.sourceware.org/buildbot/#/builders/269/builds/14789/steps/8/logs/stdio