With latest poky/master, commit: eb0cb7e8234f5d2e5623406e9660be91cf52f65e, Can not get PRAUTO from remote PR service, i got the log:
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NOTE: package linux-libc-headers-3.4-r0: task do_package: Started
ERROR: Can NOT get PRAUTO from remote PR service
ERROR: Function failed: package_get_auto_pr
ERROR: Logfile of failure stored in: /home/build/poky/pr/tmp/work/i586-poky-linux/linux-libc-headers-3.4-r0/temp/log.do_package.356
NOTE: package linux-libc-headers-3.4-r0: task do_package: Failed
ERROR: Task 464 (/home/build/poky/meta/recipes-kernel/linux-libc-headers/linux-libc-headers_3.4.bb, do_package) failed with exit code '1'
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Stps are:
1. prepare 2 poky build environments
2. in one of the poky source, run "bitbake-prserv --start"
3. in the second poky source, set PRSERV_HOST to 127.0.0.1 and PRSERV_PORT to 8585
4. run "bitbake man" and then add following lines into man_${PV}.bb
#######
do_package_append() {
        bb.build.exec_func('do_test_prserv', d)
}

do_test_prserv() {
 echo "Test if PR service could work"
}
#######
5. re-run "bitbake man", task do_packge for recipe man should be re-run