node-gyp error

[fengyh13]

• Version: v6.9.1
• Platform: Linux testServer 3.13.0-100-generic Support io.js Dockerfile or Docker Repo #147-Ubuntu SMP Tue Oct 18 16:48:51 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
• Subsystem: mosca

gyp ERR! build error
gyp ERR! stack Error: make failed with exit code: 2
gyp ERR! stack at ChildProcess.onExit (/usr/lib/node_modules/npm/node_modules/node-gyp/lib/build.js:276:23)
gyp ERR! stack at emitTwo (events.js:106:13)
gyp ERR! stack at ChildProcess.emit (events.js:191:7)
gyp ERR! stack at Process.ChildProcess._handle.onexit (internal/child_process.js:215:12)
gyp ERR! System Linux 3.13.0-100-generic
gyp ERR! command "/usr/bin/nodejs" "/usr/lib/node_modules/npm/node_modules/node-gyp/bin/node-gyp.js" "rebuild"
gyp ERR! cwd /opt/project/secretchat_server/node_modules/ascoltatori/node_modules/zmq
gyp ERR! node -v v6.9.1
gyp ERR! node-gyp -v v3.4.0
gyp ERR! not ok

============================split line====================================
gyp ERR! build error
gyp ERR! stack Error: make failed with exit code: 2
gyp ERR! stack at ChildProcess.onExit (/usr/lib/node_modules/npm/node_modules/node-gyp/lib/build.js:276:23)
gyp ERR! stack at emitTwo (events.js:106:13)
gyp ERR! stack at ChildProcess.emit (events.js:191:7)
gyp ERR! stack at Process.ChildProcess._handle.onexit (internal/child_process.js:215:12)
gyp ERR! System Linux 3.13.0-100-generic
gyp ERR! command "/usr/bin/nodejs" "/usr/lib/node_modules/npm/node_modules/node-gyp/bin/node-gyp.js" "rebuild"
gyp ERR! cwd /opt/project/secretchat_server/node_modules/zmq
gyp ERR! node -v v6.9.1
gyp ERR! node-gyp -v v3.4.0
gyp ERR! not ok

[mscdex]

node-gyp issues should be posted over on the node-gyp issue tracker. FWIW the actual error comes before the output you've shown, on the console.