4.4.0-138.164) is not available, but a newer one is (4.4.0-142.168). We redirected you there.
/usr/bin/sfood-graph is in snakefood 1.4-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/bin/../share/snakefood/sfood-graph