node-inspector/node-inspector

I'm installing node-inspector with npm inside an organisation with corporate proxy. I have configured the proxy settings for npm, but still the installation for nod-inspector is failing.

attaching the debug log below, please help with suggestions:
0 info it worked if it ends with ok
1 verbose cli [ 'C:\Program Files\nodejs\node.exe',
1 verbose cli 'C:\Users\Administrator\AppData\Roaming\npm\node_modules\npm\bin\npm-cli.js',
1 verbose cli 'install',
1 verbose cli 'node-inspector',
1 verbose cli '--save',
1 verbose cli '-g' ]
2 info using npm@3.10.9
3 info using node@v4.2.4
4 silly loadCurrentTree Starting
5 silly install loadCurrentTree
6 silly install readGlobalPackageData
7 silly fetchPackageMetaData node-inspector
8 silly fetchNamedPackageData node-inspector
9 silly mapToRegistry name node-inspector
10 silly mapToRegistry using default registry
11 silly mapToRegistry registry https://registry.npmjs.org/
12 silly mapToRegistry data Result {
12 silly mapToRegistry raw: 'node-inspector',
12 silly mapToRegistry scope: null,
12 silly mapToRegistry escapedName: 'node-inspector',
12 silly mapToRegistry name: 'node-inspector',
12 silly mapToRegistry rawSpec: '',
12 silly mapToRegistry spec: 'latest',
12 silly mapToRegistry type: 'tag' }
13 silly mapToRegistry uri https://registry.npmjs.org/node-inspector
14 verbose request uri https://registry.npmjs.org/node-inspector
15 verbose request no auth needed
16 info attempt registry request try #1 at 2:25:31 PM
17 verbose request using bearer token for auth
18 verbose request id c3ad1f8f54ee2ba7
19 http request GET https://registry.npmjs.org/node-inspector
20 http 200 https://registry.npmjs.org/node-inspector
21 verbose headers { server: 'CouchDB/1.5.0 (Erlang OTP/R16B03)',
21 verbose headers etag: '"BNGT0I0UB4ZBMYHKTJ3K06OTU"',
21 verbose headers 'content-type': 'application/json',
21 verbose headers 'content-encoding': 'gzip',
21 verbose headers 'cache-control': 'max-age=300',
21 verbose headers 'transfer-encoding': 'chunked',
21 verbose headers 'accept-ranges': 'bytes',
21 verbose headers date: 'Mon, 07 Nov 2016 08:55:31 GMT',
21 verbose headers via: '1.1 varnish',
21 verbose headers connection: 'close',
21 verbose headers 'x-served-by': 'cache-sin6922-SIN',
21 verbose headers 'x-cache': 'MISS',
21 verbose headers 'x-cache-hits': '0',
21 verbose headers 'x-timer': 'S1478508931.602628,VS0,VE273',
21 verbose headers vary: 'Accept-Encoding' }
22 silly get cb [ 200,
22 silly get { server: 'CouchDB/1.5.0 (Erlang OTP/R16B03)',
22 silly get etag: '"BNGT0I0UB4ZBMYHKTJ3K06OTU"',
22 silly get 'content-type': 'application/json',
22 silly get 'content-encoding': 'gzip',
22 silly get 'cache-control': 'max-age=300',
22 silly get 'transfer-encoding': 'chunked',
22 silly get 'accept-ranges': 'bytes',
22 silly get date: 'Mon, 07 Nov 2016 08:55:31 GMT',
22 silly get via: '1.1 varnish',
22 silly get connection: 'close',
22 silly get 'x-served-by': 'cache-sin6922-SIN',
22 silly get 'x-cache': 'MISS',
22 silly get 'x-cache-hits': '0',
22 silly get 'x-timer': 'S1478508931.602628,VS0,VE273',
22 silly get vary: 'Accept-Encoding' } ]
23 verbose get saving node-inspector to C:\Users\Administrator\AppData\Roaming\npm-cache\registry.npmjs.org\node-inspector.cache.json
24 verbose correctMkdir C:\Users\Administrator\AppData\Roaming\npm-cache correctMkdir not in flight; initializing
25 silly install normalizeTree
26 silly loadCurrentTree Finishing
27 silly loadIdealTree Starting
28 silly install loadIdealTree
29 silly cloneCurrentTree Starting
30 silly install cloneCurrentTreeToIdealTree
31 silly cloneCurrentTree Finishing
32 silly loadShrinkwrap Starting
33 silly install loadShrinkwrap
34 silly loadShrinkwrap Finishing
35 silly loadAllDepsIntoIdealTree Starting
36 silly install loadAllDepsIntoIdealTree
37 silly resolveWithNewModule node-inspector@0.12.8 checking installable status