Hi alll,
I have a problem where I look in /diffusion/ and click any repo I could see:

Unhandled Exception ("CommandException")
COMMAND
hg log --template '{node}\1{branch}\2' --rev 'head()'

STDOUT
(empty)

STDERR
abort: Permission denied: /var/repo/3/.hg/requires

Phabricator was installed on CentOS 7
#uname -a
Linux localhost.localdomain 3.10.0-327.28.2.el7.x86_64 #1 SMP Wed Aug 3 11:11:39 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
#ls -l /var/repo/3/.hg/
-rwxrwxrwx. 1 root root 57 Aug 16 04:19 00changelog.i
-rw-rw-rw-. 1 root root 8 Aug 16 15:08 branch
-rw-rw-rw-. 1 root root 40 Aug 16 15:08 dirstate
-rwxrwxrwx. 1 root root 272 Aug 16 15:23 hgrc
-rwxrwxrwx. 1 root root 33 Aug 16 04:19 requires
drwxrwxrwx. 2 root root 14 Aug 16 15:06 store

#visudoDefaults env_reset
Defaults secure_path="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
root ALL=(ALL:ALL) NOPASSWD: ALL
daemon ALL=(ALL:ALL) NOPASSWD: ALL
%root ALL=(ALL) ALL
%sudo ALL=(ALL:ALL) ALL

ps ax | grep mysql | grep -v grep

954 ?        Ss     0:00 /bin/sh /usr/bin/mysqld_safe --basedir=/usr

1321 ? Sl 0:14 /usr/libexec/mysqld --basedir=/usr --datadir=/var/lib/mysql --plugin-dir=/usr/lib64/mysql/plugin --log-error=/var/log/mariadb/mariadb.log --pid-file=/var/run/mariadb/mariadb.pid --socket=/var/lib/mysql/mysql.sock

ps ax | grep php | grep -v grep

2028 pts/1 S 0:09 php /var/www/html/phabricator/scripts/daemon/phd-daemon
2030 ? Ss 0:10 php /var/www/html/libphutil/scripts/daemon/exec/exec_daemon.php PhabricatorRepositoryPullLocalDaemon
2031 ? Ss 0:04 php /var/www/html/libphutil/scripts/daemon/exec/exec_daemon.php PhabricatorTriggerDaemon
2032 ? Ss 0:06 php /var/www/html/libphutil/scripts/daemon/exec/exec_daemon.php PhabricatorTaskmasterDaemon

ps aux | grep phd

root 2028 0.1 2.7 379008 27644 pts/1 S 14:00 0:11 php /var/www/html/phabricator/scripts/daemon/phd-daemon