Github user bzz commented on the issue: https://github.com/apache/zeppelin/pull/1282 All build failures are in zeppelin-web, while NPM dependency installation ``` INFO] bower@1.7.2 node_modules/bower [INFO] ââââââ¬Ã¢â⬠semver-utils@1.1.1 [ERROR] npm ERR! argv "/home/travis/build/apache/zeppelin/zeppelin-web/node/node" "/home/travis/build/apache/zeppelin/zeppelin-web/node/node_modules/npm/bin/npm-cli.js" "install" "--color=false" [ERROR] npm ERR! node v0.12.13 [ERROR] npm ERR! npm v2.15.0 [ERROR] [ERROR] npm ERR! Callback called more than once. [ERROR] npm ERR! [ERROR] npm ERR! If you need help, you may report this error at: [ERROR] npm ERR! <https://github.com/npm/npm/issues> [ERROR] [ERROR] npm ERR! Please include the following file with any support request: [ERROR] npm ERR! /home/travis/build/apache/zeppelin/zeppelin-web/npm-debug.log [INFO] ------------------------------------------------------------------------ ``` @jongyoul if you want to debug it in this PR - we could add `cat zeppelin-web/npm-debug.lo` to [.travis.yaml](https://github.com/apache/zeppelin/blob/master/.travis.yml#L98) If not, this patch looks great to me and solves the issue, so we can merge and handle web in separate JIRA issue. @jongyoul what do you think?
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