Cypress crashing on Linux > System limit for number of file watchers reached 'package.json'

Hi, daily user of Cypress here. Just found this corner case where Cypress.js is crashing.

Steps to reproduce

Not exactly sure but overall this is the scenario.

1. Open a bunch of processes which subscribe to package.json changes. In my case: two WebStorm windows & react build tools
2. Open Cypress, open the project directory and run all tests in Chrome
3. Cypress will crash right after opening Chrome with the following output:

Cypress process output

 {
  errno: -28,
  syscall: 'watch',
  code: 'ENOSPC',
  path: '/home/jake/DEV/dedupe-refresh/package.json',
  filename: '/home/jake/DEV/dedupe-refresh/package.json'
}
Error: ENOSPC: System limit for number of file watchers reached, watch '/home/jake/DEV/dedupe-refresh/package.json'
    at FSWatcher.start (internal/fs/watchers.js:165:26)
    at Object.watch (fs.js:1329:11)
    at createFsWatchInstance (/home/jake/.cache/Cypress/4.3.0/Cypress/resources/app/packages/server/node_modules/watchify/node_modules/chokidar/lib/nodefs-handler.js:38:15)
    at setFsWatchListener (/home/jake/.cache/Cypress/4.3.0/Cypress/resources/app/packages/server/node_modules/watchify/node_modules/chokidar/lib/nodefs-handler.js:81:15)
    at FSWatcher.NodeFsHandler._watchWithNodeFs (/home/jake/.cache/Cypress/4.3.0/Cypress/resources/app/packages/server/node_modules/watchify/node_modules/chokidar/lib/nodefs-handler.js:233:14)
    at FSWatcher.NodeFsHandler._handleFile (/home/jake/.cache/Cypress/4.3.0/Cypress/resources/app/packages/server/node_modules/watchify/node_modules/chokidar/lib/nodefs-handler.js:262:21)
    at FSWatcher.<anonymous> (/home/jake/.cache/Cypress/4.3.0/Cypress/resources/app/packages/server/node_modules/watchify/node_modules/chokidar/lib/nodefs-handler.js:495:21)
    at callback (/home/jake/.cache/Cypress/4.3.0/Cypress/resources/app/packages/server/node_modules/graceful-fs/polyfills.js:289:20)
    at FSReqCallback.oncomplete (fs.js:159:5)

GET /__cypress/tests?p=cypress/support/index.js-271 - - ms - -
GET /__cypress/tests?p=cypress/integration/2.rwandaAllDedupes.test.js-101 - - ms - -
GET /__cypress/tests?p=cypress/integration/1.filterOptions.test.js-697 - - ms - -
/home/jake/.cache/Cypress/4.3.0/Cypress/Cypress --no-sandbox -- --cwd /home/jake/DEV/dedupe-refresh[19436]: ../../third_party/electron_node/src/node_platform.cc:449:std::shared_ptr<PerIsolatePlatformData> node::NodePlatform::ForIsolate(v8::Isolate *): Assertion `data' failed.
The Test Runner unexpectedly exited via a exit event with signal SIGABRT

Please search Cypress documentation for possible solutions:

https://on.cypress.io

Check if there is a GitHub issue describing this crash:

https://github.com/cypress-io/cypress/issues

Consider opening a new issue.

----------

Platform: linux (Ubuntu Linux - 19.10)
Cypress Version: 4.3.0

System

Ubuntu 19.10 Cypress 4.3.0 node.js v12.16.1

---

Thanks! I love cypress. Let me know if I can provide more info.

[jakub-bao]

Also, FYI, I have file watching explicitly disabled in cypress.json, but it’s still crashing:

{
  "baseUrl": "http://localhost:3003",
  "watchForFileChanges": false,
  "defaultCommandTimeout": 10000
}

[berviantoleo]

Hi,

I think I meet the same problem that the options for disabling file watch do not work (it’s happened at 7.7.0):

https://github.com/berviantoleo/react-multi-crop/runs/3018043472?check_suite_focus=true

Since my configuration like this:

https://github.com/berviantoleo/react-multi-crop/blob/master/examples/demo/cypress.json

But it’s fine when at 7.6.0:

https://github.com/berviantoleo/react-multi-crop/runs/2958413049?check_suite_focus=true