spawnSync tests failed on arm64 in ci job
spawnSync tests on arm64 in ci job were failed with TIMEOUT in https://jenkins-iojs.nodesource.com/job/iojs+any-pr+multi/nodes=iojs-armv8-ubuntu1404/234/console and related tests using spawnSync were also failed as discussed in #1028 .
CC: @bnoordhuis