Upgrade graceful-fs module to a recent version - node.js

Question

i've a docker container from node:6 official image.
I'd like trying this project: https://github.com/mozilla/fxa-webrtc-idp
node version is 6.9.5
npm version is 3.10.10
when i exec npm test, this is what appairs:
root#3be6ee5c1ab6:/fxa-webrtc-idp# npm test
npm info it worked if it ends with ok
npm info using npm#3.10.10
npm info using node#v6.9.5
npm info lifecycle fxa-webrtc-idp#0.64.0~pretest: fxa-webrtc-idp#0.64.0
npm info lifecycle fxa-webrtc-idp#0.64.0~test: fxa-webrtc-idp#0.64.0
> fxa-webrtc-idp#0.64.0 test /fxa-webrtc-idp
> LOG_LEVEL=error grunt test --node-env=test
(node:354) fs: re-evaluating native module sources is not supported. If you are using the graceful-fs module, please update it to a more recent version.
Running "copyright:app" (copyright) task
Running "eslint:files" (eslint) task
Running "mochaTest:test" (mochaTest) task
the route /sign
✓ returns a 401 when the request is not authenticated
✓ returns a signed assertion when the request is authenticated
the route /
✓ should return version information
the route /__version__
✓ should return version information
4 passing (44ms)
Running "mochaTest:coverage" (mochaTest) task
Coverage Summary:
Name Stmts Miss Cover Missing
-----------------------------------------------------------
lib/app.js 22 0 100%
lib/logging/summary.js 14 3 79% 14,30,31
lib/routes/index.js 1 0 100%
lib/routes/oauthBegin.js 7 2 71% 20,25
lib/routes/oauthComplete.js 8 2 75% 18,24
lib/routes/sign.js 10 0 100%
lib/routes/verify.js 16 9 44% 14,23,26,27,29,31,32,35,37
lib/routes/version.js 52 8 85% 34,35,47,48,60,61,74,75
===========================================================
TOTAL 130 24 82%
Running "mochaTest:travis-cov" (mochaTest) task
Coverage: 81%
Code coverage below threshold: 81 < 95
Execution Time (2017-02-08 11:46:19 UTC)
loading tasks 1s ▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇ 58%
eslint:files 432ms ▇▇▇▇▇▇▇▇▇▇▇▇ 25%
mochaTest:test 287ms ▇▇▇▇▇▇▇▇ 16%
Total 1.8s
npm info lifecycle fxa-webrtc-idp#0.64.0~test: Failed to exec test script
npm ERR! Test failed. See above for more details.
When i exec npm ls graceful-fs this is what appairs:
root#3be6ee5c1ab6:/fxa-webrtc-idp# npm ls graceful-fs
npm info it worked if it ends with ok
npm info using npm#3.10.10
npm info using node#v6.9.5
fxa-webrtc-idp#0.64.0 /fxa-webrtc-idp
+-- grunt#0.4.5
| `-- glob#3.1.21
| `-- graceful-fs#1.2.3
+-- grunt-conventional-changelog#5.0.0
| `-- conventional-changelog#0.5.3
| `-- read-pkg#1.1.0
| +-- load-json-file#1.1.0
| | `-- graceful-fs#4.1.11
| `-- path-type#1.1.0
| `-- graceful-fs#4.1.11
+-- grunt-eslint#17.3.1
| `-- eslint#1.10.3
| `-- file-entry-cache#1.3.1
| `-- flat-cache#1.2.2
| `-- graceful-fs#4.1.11
+-- grunt-jscs#2.7.0
| `-- jscs#2.9.0
| `-- babel-jscs#2.0.5
| `-- babel-core#5.8.38
| +-- output-file-sync#1.1.2
| | `-- graceful-fs#4.1.11
| `-- regenerator#0.8.40
| `-- commoner#0.10.8
| `-- graceful-fs#4.1.11
+-- grunt-nodemon#0.4.1
| `-- nodemon#1.11.0
| +-- chokidar#1.6.1
| | `-- readdirp#2.1.0
| | `-- graceful-fs#4.1.11
| `-- update-notifier#0.5.0
| `-- configstore#1.4.0
| +-- graceful-fs#4.1.11
| `-- write-file-atomic#1.3.1
| `-- graceful-fs#4.1.11
`-- grunt-nsp#2.1.2
`-- nsp#2.0.1
`-- nodesecurity-npm-utils#3.0.0
`-- silent-npm-registry-client#1.0.0
`-- npm-registry-client#6.3.3
`-- graceful-fs#3.0.8
npm info ok
How can i solve my problem? Thanks for the support

Answer 1

Try upgrading your npm. It might help, like it did for me with similar kind of error. Please run below command and
npm install npm#latest -g