CTest error warp-serial: memory access violation

[tartarini]

running on branh master with
ctest -VV -L serial

error is obtained:

`
test 2
Start 2: warp-serial

2: Test command: /home/tartarini/DEVELOPMENT/INSIGNEO/pFIRE/bin/test_warp
2: Test timeout computed to be: 9.99988e+06
2: --------------------------------------------------------------------------
2: [[40699,1],0]: A high-performance Open MPI point-to-point messaging module
2: was unable to find any relevant network interfaces:
2:
2: Module: OpenFabrics (openib)
2: Host: cse-server-sheffield-ac-uk
2:
2: Another transport will be used instead, although this may result in
2: lower performance.
2:
2: NOTE: You can disable this warning by setting the MCA parameter
2: btl_base_warn_component_unused to 0.
2: --------------------------------------------------------------------------
2: Running on 1 processes
2: Running 2 test cases...
2: Iteration 0
2: unknown location(0): fatal error: in "indexing/uniform_warp": memory access violation at address: 0xffffffff019fc9a4: no mapping at fault address
2: /home/tartarini/DEVELOPMENT/INSIGNEO/pFIRE/unit_test/test_warp.cpp(117): last checkpoint
2:
'