☝ Buildbot (Sourceware): gcc - worker cannot substantiate (master)

[builder--- via Gcc-testresults]

A build exception has been detected on builder gcc-fedora-x86_64 while building 
gcc.

Full details are available at:
    https://builder.sourceware.org/buildbot/#/builders/159/builds/14501

Build state: worker cannot substantiate
Revision: (unknown)
Worker: bbo1-2
Build Reason: (unknown)
Blamelist: Sandra Loosemore <sloosem...@baylibre.com>

Steps:

- 0: worker_preparation ( exception )
    Logs:
        - err.text: 
https://builder.sourceware.org/buildbot/#/builders/159/builds/14501/steps/0/logs/err_text
        - err.html: 
https://builder.sourceware.org/buildbot/#/builders/159/builds/14501/steps/0/logs/err_html