from nightly tests:

echo "## Bake OFI/VERBS:"
rm -f /dev/shm/foo.dat
bake-mkpool -s 60G /dev/shm/foo.dat
mpirun -f $COBALT_NODEFILE -n 2 numactl -N 1 -m 1 ./bake-p2p-bw -x 16777216 -m 34359738368 \
                  -n "verbs://" -p /dev/shm/foo.dat -c 1

The test appears to complete without errors and reports a result, but upon shutdown gives this error:

    # HG -- Error -- [...]/src/mercury_core.c:1167
 # hg_core_finalize(): HG addrs must be freed before finalizing HG (2048 remaining)
# HG -- Error -- [...]/src/mercury_core.c:3471
 # HG_Core_finalize(): Cannot finalize HG core layer
# HG -- Error -- [...]/src/mercury.c:1009
 # HG_Finalize(): Could not finalize HG core class

spack version: 0.13.4-1029-e8b6c40b3

==> 15 installed packages
-- linux-rhel7-haswell / gcc@8.2.0 ------------------------------
argobots@1.0rc2
bake@0.4
libfabric@1.9.0
libnl@3.3.0
libpciaccess@0.13.5
libuuid@1.0.3
libxml2@2.9.1
margo@0.6.1
mercury@master
mvapich2@2.3.2
ncurses@5.9
pmdk@1.8
rdma-core@20
ssg@0.4.1
zlib@1.2.7

This "HG addrs must be freed" error message looks a lot like an error message from last week, but as you can see from the packages, we have already picked up that fix (mercury@master).

This error shows up on bebop, cooley, and theta