/usr/share/man/man3/slurm_job_will_run.3.gz is in libslurm-dev 14.03.9-5+deb8u2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/man/man3/slurm_allocate_resources.3.gz
/usr/share/man/man3/slurm_allocate_resources.3.gz