error in `make check`

[Uuq114]

Hello, I ran make check on server just like said in README, but it got error in restart. Could you give me some hints to solve this problem?
Below is detailed info:

# user @ pm1 in ~/sjj/mini-DMTCP-master [22:19:57] 
$ make check              
rm -rf libckpt.so ckpt.o memoryMap_miniDMTCP.bin hello hello.o restart
gcc -c -g -fno-stack-protector -Wall -Werror -fPIC -o ckpt.o ckpt.c
gcc -shared -g -fno-stack-protector -o libckpt.so ckpt.o
gcc -c -g -fno-stack-protector -Wall -Werror -fpic -o hello.o hello.c
gcc -g -fno-stack-protector -o hello hello.o
gcc -g -fno-stack-protector -static -Wl,-Ttext-segment=5000000 -Wl,-Tdata=5100000 -Wl,-Tbss=5200000 -o restart restart.c
(sleep 3 && kill -12 `pgrep -n hello` && sleep 2 && pkill -9 hello) &
LD_PRELOAD=`pwd`/libckpt.so ./hello
0 1 2 3 
caught this
4 5 6 Killed
makefile:26: recipe for target 'check' failed
make: *** [check] Error 137