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

[builder--- via Gcc-testresults]

A build exception has been detected on builder gcc-fullest-debian-amd64 while 
building gcc.

Full details are available at:
    https://builder.sourceware.org/buildbot/#/builders/312/builds/1772

Build state: worker cannot substantiate
Revision: (unknown)
Worker: x3d1
Build Reason: (unknown)
Blamelist: Harish Sadineni <harish.sadin...@windriver.com>, Torbjörn SVENSSON 
<torbjorn.svens...@foss.st.com>

Steps:

- 0: worker_preparation ( exception )
    Logs:
        - err.text: 
https://builder.sourceware.org/buildbot/#/builders/312/builds/1772/steps/0/logs/err_text
        - err.html: 
https://builder.sourceware.org/buildbot/#/builders/312/builds/1772/steps/0/logs/err_html