virtual memory exhausted: Cannot allocate memory
make[2]: *** [lib/CMakeFiles/uhd.dir/usrp/multi_usrp.cpp.o] Error 1
make[1]: *** [lib/CMakeFiles/uhd.dir/all] Error 2
make: *** [all] Error 2
vagrant@vagrant-ubuntu-trusty-64:~/uhd/host/build$ make
[ 0%] Built target doxygen_docs
[ 3%] Built target man_page_gzips
[ 3%] Building CXX object lib/CMakeFiles/uhd.dir/usrp/multi_usrp.cpp.o
^Cmake[2]: *** [lib/CMakeFiles/uhd.dir/usrp/multi_usrp.cpp.o] Interrupt
make[1]: *** [lib/CMakeFiles/uhd.dir/all] Interrupt
make: *** [all] Interrupt