0 info it worked if it ends with ok 1 verbose cli [ '/usr/local/Cellar/node/8.0.0_1/bin/node', 1 verbose cli '/usr/local/bin/npm', 1 verbose cli 'rm', 1 verbose cli '-g', 1 verbose cli 'polymer-cli' ] 2 info using npm@5.0.2 3 info using node@v8.0.0 4 silly install loadCurrentTree 5 silly install readGlobalPackageData 6 silly install loadIdealTree 7 silly install cloneCurrentTreeToIdealTree 8 silly install loadShrinkwrap 9 silly uninstall loadAllDepsIntoIdealTree 10 silly install loadAllDepsIntoIdealTree 11 error cb() never called! 12 error This is an error with npm itself. Please report this error at: 13 error