Running "cef-extract" task
Error: Command failed: [/home/user/download/brackets/src/brackets-shell/downloads/cef_binary_3.1547.1459_linux64_release.zip]
  End-of-central-directory signature not found.  Either this file is not
  a zipfile, or it constitutes one disk of a multi-part archive.  In the
  latter case the central directory and zipfile comment will be found on
  the last disk(s) of this archive.
unzip:  cannot find zipfile directory in one of /home/user/download/brackets/src/brackets-shell/downloads/cef_binary_3.1547.1459_linux64_release.zip or
        /home/user/download/brackets/src/brackets-shell/downloads/cef_binary_3.1547.1459_linux64_release.zip.zip, and cannot find /home/user/download/brackets/src/brackets-shell/downloads/cef_binary_3.1547.1459_linux64_release.zip.ZIP, period.

Warning: Task "cef-extract" failed. Use --force to continue.

Aborted due to warnings.
==> FEHLER: Ein Fehler geschah in build().
    Breche ab ...