Cypress run won’t finish, stuck while making connection to Chrome

[filiphric]

Current behavior:

I’m getting error: Cypress failed to make a connection to the Chrome DevTools Protocol after retrying during my tests. Usually happens during one of last tests (probably the last). I have multiple Cypress projects, happens on all of them. Tests are running in parallel, on Chrome.

Test code to reproduce

Issue happens quite randomly, I’m sorry, but I cannot really give a reproducible example, since this happens in CI only. Sending screenshots.

Versions

Cypress 4.0.2
CI: Bitbucket Pipelines
Image: cypress/browsers:node13.6.0-chrome80-ff72

[jennifer-shehane]

Oof, yeah, these are difficult to track down.

@flotwig will cases like this get any benefit from #6532 or is this a whole new case again?

[bsodmike]

@filiphric Can you also try running with DEBUG=cypress:*? Thanks!

[filiphric]

Here it is:

 Running:  polls/survey.js                                                               (38 of 43)
  Estimated: 11 seconds
  cypress:server:run about to run spec { spec: { name: 'polls/survey.js', relative: 'tests/polls/survey.js', absolute: '/opt/atlassian/pipelines/agent/build/regression-wall/tests/polls/survey.js' }, isHeadless: true, browser: { name: 'chrome', family: 'chromium', channel: 'stable', displayName: 'Chrome', version: '80.0.3987.87', path: 'google-chrome', majorVersion: 80, isHeadless: true, isHeaded: false } } +273ms
  cypress:server:run video recording has been enabled. video: true +0ms
  cypress:server:video capture started { command: 'ffmpeg -n 20 /root/.cache/Cypress/4.0.2/Cypress/resources/app/packages/server/node_modules/@ffmpeg-installer/linux-x64/ffmpeg -f image2pipe -use_wallclock_as_timestamps 1 -i pipe:0 -y -vcodec libx264 -preset ultrafast /opt/atlassian/pipelines/agent/build/regression-wall/videos/polls/survey.js.mp4' } +296ms
  cypress:server:run waiting for socket to connect and browser to launch... +23ms
  cypress:server:run waiting for socket connection... { id: 'vq2u9' } +0ms
  cypress:server:run setting Chrome properties { shouldWriteVideo: true } +1ms
  cypress:server:open_project resetting project state, preparing to launch browser +30s
  cypress:server:project resetting project instance /opt/atlassian/pipelines/agent/build/regression-wall +1s
  cypress:proxy:http:util:buffers resetting buffers +6s
  cypress:server:server Setting remoteAuth undefined +3s
  cypress:network:cors Parsed URL { port: '443', tld: 'com', domain: 'slido-staging' } +4s
  cypress:server:server Setting remoteOrigin https://sli.do +0ms
  cypress:server:server Setting remoteHostAndPort { port: '443', tld: 'com', domain: 'slido-staging' } +0ms
  cypress:server:server Setting remoteDocDomain sli.do +0ms
  cypress:server:server Getting remote state: { auth: undefined, props: { port: '443', tld: 'com', domain: 'slido-staging' }, origin: 'https://sli.do', strategy: 'http', visiting: false, domainName: 'sli.do', fileServer: null } +0ms
  cypress:server:open_project launching browser: { name: 'chrome', family: 'chromium', channel: 'stable', displayName: 'Chrome', version: '80.0.3987.87', path: 'google-chrome', majorVersion: 80, isHeadless: true, isHeaded: false }, spec: tests/polls/survey.js +1ms
  cypress:server:browsers getBrowserLauncher { browser: { name: 'chrome', family: 'chromium', channel: 'stable', displayName: 'Chrome', version: '80.0.3987.87', path: 'google-chrome', majorVersion: 80, isHeadless: true, isHeaded: false } } +427ms
  cypress:server:browsers opening browser { name: 'chrome', family: 'chromium', channel: 'stable', displayName: 'Chrome', version: '80.0.3987.87', path: 'google-chrome', majorVersion: 80, isHeadless: true, isHeaded: false } +0ms
  cypress:server:browsers:chrome reading chrome preferences... { userDir: '/root/.config/Cypress/cy/production/browsers/chrome-stable/run-192', CHROME_PREFERENCE_PATHS: { default: 'Default/Preferences', defaultSecure: 'Default/Secure Preferences', localState: 'Local State' } } +446ms
  cypress:server:video capture stderr log { message: 'ffmpeg version N-47683-g0e8eb07980-static https://johnvansickle.com/ffmpeg/  Copyright (c) 2000-2018 the FFmpeg developers' } +3ms
  cypress:server:video capture stderr log { message: '  built with gcc 6.3.0 (Debian 6.3.0-18+deb9u1) 20170516' } +0ms
  cypress:server:video capture stderr log { message: '  configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc-6 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gray --enable-libaom --enable-libfribidi --enable-libass --enable-libvmaf --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librubberband --enable-libsoxr --enable-libspeex --enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzimg' } +0ms
  cypress:server:video capture stderr log { message: '  libavutil      56. 24.101 / 56. 24.101' } +0ms
  cypress:server:video capture stderr log { message: '  libavcodec     58. 42.100 / 58. 42.100' } +0ms
  cypress:server:video capture stderr log { message: '  libavformat    58. 24.100 / 58. 24.100' } +0ms
  cypress:server:video capture stderr log { message: '  libavdevice    58.  6.101 / 58.  6.101' } +0ms
  cypress:server:video capture stderr log { message: '  libavfilter     7. 46.101 /  7. 46.101' } +0ms
  cypress:server:video capture stderr log { message: '  libswscale      5.  4.100 /  5.  4.100' } +0ms
  cypress:server:video capture stderr log { message: '  libswresample   3.  4.100 /  3.  4.100' } +0ms
  cypress:server:video capture stderr log { message: '  libpostproc    55.  4.100 / 55.  4.100' } +0ms
  cypress:server:plugins plugin event registered? { event: 'before:browser:launch', isRegistered: false } +29s
  cypress:server:browsers:chrome chrome is running headlessly, not installing extension +5ms
  cypress:server:appdata path: /root/.config/Cypress/cy/production/extensions +29s
  cypress:server:browsers:chrome launching in chrome with debugging port {
  url: 'https://sli.do/__/#/tests/integration/polls/survey.js',
   args: [
    '--test-type',
    '--ignore-certificate-errors',
    '--start-maximized',
    '--silent-debugger-extension-api',
    '--no-default-browser-check',
    '--no-first-run',
    '--noerrdialogs',
    '--enable-fixed-layout',
    '--disable-popup-blocking',
    '--disable-password-generation',
    '--disable-save-password-bubble',
    '--disable-single-click-autofill',
    '--disable-prompt-on-repos',
    '--disable-background-timer-throttling',
    '--disable-renderer-backgrounding',
    '--disable-renderer-throttling',
    '--disable-restore-session-state',
    '--disable-translate',
    '--disable-new-profile-management',
    '--disable-new-avatar-menu',
    '--allow-insecure-localhost',
    '--reduce-security-for-testing',
    '--enable-automation',
    '--disable-device-discovery-notifications',
    '--disable-infobars',
    '--autoplay-policy=no-user-gesture-required',
    '--disable-site-isolation-trials',
    '--metrics-recording-only',
    '--disable-prompt-on-repost',
    '--disable-hang-monitor',
    '--disable-sync',
    '--disable-web-resources',
    '--safebrowsing-disable-auto-update',
    '--safebrowsing-disable-download-protection',
    '--disable-client-side-phishing-detection',
    '--disable-component-update',
    '--disable-default-apps',
    '--use-fake-ui-for-media-stream',
    '--use-fake-device-for-media-stream',
    '--disable-ipc-flooding-protection',
    '--disable-backgrounding-occluded-window',
    '--disable-breakpad',
    '--password-store=basic',
    '--use-mock-keychain',
    '--disable-gpu',
    '--no-sandbox',
    '--proxy-server=http://localhost:34615',
    '--proxy-bypass-list=<-loopback>',
    '--headless',
    '--remote-debugging-port=39999',
    '--remote-debugging-address=127.0.0.1',
    '--user-data-dir=/root/.config/Cypress/cy/production/browsers/chrome-stable/run-192',
    '--disk-cache-dir=/root/.config/Cypress/cy/production/browsers/chrome-stable/run-192/CypressCache'
  ],
  port: 39999
} +0ms
cypress:launcher launching browser { name: 'chrome', family: 'chromium', channel: 'stable', displayName: 'Chrome', version: '80.0.3987.87', path: 'google-chrome', majorVersion: 80, isHeadless: true, isHeaded: false } to open about:blank +30s
  cypress:launcher spawning browser { name: 'chrome', family: 'chromium', channel: 'stable', displayName: 'Chrome', version: '80.0.3987.87', path: 'google-chrome', majorVersion: 80, isHeadless: true, isHeaded: false } with args about:blank --test-type --ignore-certificate-errors --start-maximized --silent-debugger-extension-api --no-default-browser-check --no-first-run --noerrdialogs --enable-fixed-layout --disable-popup-blocking --disable-password-generation --disable-save-password-bubble --disable-single-click-autofill --disable-prompt-on-repos --disable-background-timer-throttling --disable-renderer-backgrounding --disable-renderer-throttling --disable-restore-session-state --disable-translate --disable-new-profile-management --disable-new-avatar-menu --allow-insecure-localhost --reduce-security-for-testing --enable-automation --disable-device-discovery-notifications --disable-infobars --autoplay-policy=no-user-gesture-required --disable-site-isolation-trials --metrics-recording-only --disable-prompt-on-repost --disable-hang-monitor --disable-sync --disable-web-resources --safebrowsing-disable-auto-update --safebrowsing-disable-download-protection --disable-client-side-phishing-detection --disable-component-update --disable-default-apps --use-fake-ui-for-media-stream --use-fake-device-for-media-stream --disable-ipc-flooding-protection --disable-backgrounding-occluded-window --disable-breakpad --password-store=basic --use-mock-keychain --disable-gpu --no-sandbox --proxy-server=http://localhost:34615 --proxy-bypass-list=<-loopback> --headless --remote-debugging-port=39999 --remote-debugging-address=127.0.0.1 --user-data-dir=/root/.config/Cypress/cy/production/browsers/chrome-stable/run-192 --disk-cache-dir=/root/.config/Cypress/cy/production/browsers/chrome-stable/run-192/CypressCache +0ms
  cypress:server:browsers:chrome connecting to Chrome remote interface at random port 39999 +21ms
  cypress:server:protocol Getting WS connection to CRI on port 39999 +30s
  cypress:network:connect received error on connect, retrying { iteration: 0, delay: 100, err: Error: connect ECONNREFUSED 127.0.0.1:39999     at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1056:14) { errno: 'ECONNREFUSED', code: 'ECONNREFUSED', syscall: 'connect', address: '127.0.0.1', port: 39999 } } +4s
  cypress:network:connect received error on connect, retrying { iteration: 1, delay: 100, err: Error: connect ECONNREFUSED 127.0.0.1:39999     at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1056:14) { errno: 'ECONNREFUSED', code: 'ECONNREFUSED', syscall: 'connect', address: '127.0.0.1', port: 39999 } } +102ms
  cypress:network:connect received error on connect, retrying { iteration: 2, delay: 100, err: Error: connect ECONNREFUSED 127.0.0.1:39999     at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1056:14) { errno: 'ECONNREFUSED', code: 'ECONNREFUSED', syscall: 'connect', address: '127.0.0.1', port: 39999 } } +102ms
  cypress:network:connect received error on connect, retrying { iteration: 3, delay: 100, err: Error: connect ECONNREFUSED 127.0.0.1:39999     at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1056:14) { errno: 'ECONNREFUSED', code: 'ECONNREFUSED', syscall: 'connect', address: '127.0.0.1', port: 39999 } } +101ms
  cypress:network:connect received error on connect, retrying { iteration: 4, delay: 100, err: Error: connect ECONNREFUSED 127.0.0.1:39999     at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1056:14) { errno: 'ECONNREFUSED', code: 'ECONNREFUSED', syscall: 'connect', address: '127.0.0.1', port: 39999 } } +101ms
  cypress:network:connect received error on connect, retrying { iteration: 5, delay: 100, err: Error: connect ECONNREFUSED 127.0.0.1:39999     at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1056:14) { errno: 'ECONNREFUSED', code: 'ECONNREFUSED', syscall: 'connect', address: '127.0.0.1', port: 39999 } } +102ms
  cypress:network:connect received error on connect, retrying { iteration: 6, delay: 100, err: Error: connect ECONNREFUSED 127.0.0.1:39999     at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1056:14) { errno: 'ECONNREFUSED', code: 'ECONNREFUSED', syscall: 'connect', address: '127.0.0.1', port: 39999 } } +103ms
  cypress:network:connect received error on connect, retrying { iteration: 7, delay: 100, err: Error: connect ECONNREFUSED 127.0.0.1:39999     at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1056:14) { errno: 'ECONNREFUSED', code: 'ECONNREFUSED', syscall: 'connect', address: '127.0.0.1', port: 39999 } } +106ms
  cypress:network:connect received error on connect, retrying { iteration: 8, delay: 100, err: Error: connect ECONNREFUSED 127.0.0.1:39999     at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1056:14) { errno: 'ECONNREFUSED', code: 'ECONNREFUSED', syscall: 'connect', address: '127.0.0.1', port: 39999 } } +101ms
  cypress:network:connect received error on connect, retrying { iteration: 9, delay: 100, err: Error: connect ECONNREFUSED 127.0.0.1:39999     at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1056:14) { errno: 'ECONNREFUSED', code: 'ECONNREFUSED', syscall: 'connect', address: '127.0.0.1', port: 39999 } } +103ms
  cypress:network:connect received error on connect, retrying { iteration: 10, delay: 500, err: Error: connect ECONNREFUSED 127.0.0.1:39999     at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1056:14) { errno: 'ECONNREFUSED', code: 'ECONNREFUSED', syscall: 'connect', address: '127.0.0.1', port: 39999 } } +101ms
  cypress:network:connect received error on connect, retrying { iteration: 11, delay: 500, err: Error: connect ECONNREFUSED 127.0.0.1:39999     at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1056:14) { errno: 'ECONNREFUSED', code: 'ECONNREFUSED', syscall: 'connect', address: '127.0.0.1', port: 39999 } } +501ms
  cypress:network:connect received error on connect, retrying { iteration: 12, delay: 500, err: Error: connect ECONNREFUSED 127.0.0.1:39999     at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1056:14) { errno: 'ECONNREFUSED', code: 'ECONNREFUSED', syscall: 'connect', address: '127.0.0.1', port: 39999 } } +501ms
  cypress:network:connect received error on connect, retrying { iteration: 13, delay: 500, err: Error: connect ECONNREFUSED 127.0.0.1:39999     at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1056:14) { errno: 'ECONNREFUSED', code: 'ECONNREFUSED', syscall: 'connect', address: '127.0.0.1', port: 39999 } } +501ms
  cypress:server:util:process_profiler current & mean memory and CPU usage by process group:
  cypress:server:util:process_profiler ┌─────────┬───────────────────┬──────────────┬─────────────────┬────────────┬────────────────┬──────────┬──────────────┬─────────────┐
  cypress:server:util:process_profiler │ (index) │       group       │ processCount │      pids       │ cpuPercent │ meanCpuPercent │ memRssMb │ meanMemRssMb │ maxMemRssMb │
  cypress:server:util:process_profiler ├─────────┼───────────────────┼──────────────┼─────────────────┼────────────┼────────────────┼──────────┼──────────────┼─────────────┤
  cypress:server:util:process_profiler │    0    │     'cypress'     │      1       │      '192'      │   15.32    │      8.16      │  357.09  │    323.73    │   385.18    │
  cypress:server:util:process_profiler │    1    │ 'electron-shared' │      3       │ '204, 362, 387' │     0      │      0.06      │  140.2   │    143.83    │    340.4    │
  cypress:server:util:process_profiler │    2    │     'plugin'      │      1       │      '442'      │     0      │       0        │  73.74   │    73.76     │    74.75    │
  cypress:server:util:process_profiler │    3    │     'ffmpeg'      │      1       │     '1901'      │     0      │      2.2       │  13.13   │     54.7     │   176.23    │
  cypress:server:util:process_profiler │    4    │      'other'      │      2       │  '1926, 1927'   │     0      │      0.1       │   3.32   │     6.49     │    86.53    │
  cypress:server:util:process_profiler │    5    │      'TOTAL'      │      8       │       '-'       │   15.32    │     19.74      │  587.48  │   1125.07    │   1475.57   │
  cypress:server:util:process_profiler └─────────┴───────────────────┴──────────────┴─────────────────┴────────────┴────────────────┴──────────┴──────────────┴─────────────┘ +10s
  cypress:network:connect received error on connect, retrying { iteration: 14, delay: 500, err: Error: connect ECONNREFUSED 127.0.0.1:39999     at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1056:14) { errno: 'ECONNREFUSED', code: 'ECONNREFUSED', syscall: 'connect', address: '127.0.0.1', port: 39999 } } +501ms
  cypress:network:connect received error on connect, retrying { iteration: 15, delay: 500, err: Error: connect ECONNREFUSED 127.0.0.1:39999     at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1056:14) { errno: 'ECONNREFUSED', code: 'ECONNREFUSED', syscall: 'connect', address: '127.0.0.1', port: 39999 } } +501ms
  cypress:network:connect received error on connect, retrying { iteration: 16, delay: 500, err: Error: connect ECONNREFUSED 127.0.0.1:39999     at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1056:14) { errno: 'ECONNREFUSED', code: 'ECONNREFUSED', syscall: 'connect', address: '127.0.0.1', port: 39999 } } +502ms
  cypress:network:connect received error on connect, retrying { iteration: 17, delay: 500, err: Error: connect ECONNREFUSED 127.0.0.1:39999     at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1056:14) { errno: 'ECONNREFUSED', code: 'ECONNREFUSED', syscall: 'connect', address: '127.0.0.1', port: 39999 } } +502ms
Failed to connect to Chrome, retrying in 1 second (attempt 18/32)
  cypress:network:connect received error on connect, retrying { iteration: 18, delay: 1000, err: Error: connect ECONNREFUSED 127.0.0.1:39999     at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1056:14) { errno: 'ECONNREFUSED', code: 'ECONNREFUSED', syscall: 'connect', address: '127.0.0.1', port: 39999 } } +503ms
Failed to connect to Chrome, retrying in 1 second (attempt 19/32)
  cypress:network:connect received error on connect, retrying { iteration: 19, delay: 1000, err: Error: connect ECONNREFUSED 127.0.0.1:39999     at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1056:14) { errno: 'ECONNREFUSED', code: 'ECONNREFUSED', syscall: 'connect', address: '127.0.0.1', port: 39999 } } +1s
Failed to connect to Chrome, retrying in 1 second (attempt 20/32)
  cypress:network:connect received error on connect, retrying { iteration: 20, delay: 1000, err: Error: connect ECONNREFUSED 127.0.0.1:39999     at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1056:14) { errno: 'ECONNREFUSED', code: 'ECONNREFUSED', syscall: 'connect', address: '127.0.0.1', port: 39999 } } +1s
Failed to connect to Chrome, retrying in 1 second (attempt 21/32)
  cypress:network:connect received error on connect, retrying { iteration: 21, delay: 1000, err: Error: connect ECONNREFUSED 127.0.0.1:39999     at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1056:14) { errno: 'ECONNREFUSED', code: 'ECONNREFUSED', syscall: 'connect', address: '127.0.0.1', port: 39999 } } +1s
Failed to connect to Chrome, retrying in 1 second (attempt 22/32)
  cypress:network:connect received error on connect, retrying { iteration: 22, delay: 1000, err: Error: connect ECONNREFUSED 127.0.0.1:39999     at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1056:14) { errno: 'ECONNREFUSED', code: 'ECONNREFUSED', syscall: 'connect', address: '127.0.0.1', port: 39999 } } +1s
Failed to connect to Chrome, retrying in 1 second (attempt 23/32)
cypress:network:connect received error on connect, retrying { iteration: 23, delay: 1000, err: Error: connect ECONNREFUSED 127.0.0.1:39999     at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1056:14) { errno: 'ECONNREFUSED', code: 'ECONNREFUSED', syscall: 'connect', address: '127.0.0.1', port: 39999 } } +1s
  cypress:network:connect received error on connect, retrying { iteration: 24, delay: 1000, err: Error: connect ECONNREFUSED 127.0.0.1:39999     at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1056:14) { errno: 'ECONNREFUSED', code: 'ECONNREFUSED', syscall: 'connect', address: '127.0.0.1', port: 39999 } } +1s
Failed to connect to Chrome, retrying in 1 second (attempt 24/32)
Failed to connect to Chrome, retrying in 1 second (attempt 25/32)
  cypress:network:connect received error on connect, retrying { iteration: 25, delay: 1000, err: Error: connect ECONNREFUSED 127.0.0.1:39999     at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1056:14) { errno: 'ECONNREFUSED', code: 'ECONNREFUSED', syscall: 'connect', address: '127.0.0.1', port: 39999 } } +1s
Failed to connect to Chrome, retrying in 1 second (attempt 26/32)
  cypress:network:connect received error on connect, retrying { iteration: 26, delay: 1000, err: Error: connect ECONNREFUSED 127.0.0.1:39999     at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1056:14) { errno: 'ECONNREFUSED', code: 'ECONNREFUSED', syscall: 'connect', address: '127.0.0.1', port: 39999 } } +1s
  cypress:server:util:process_profiler current & mean memory and CPU usage by process group:
  cypress:server:util:process_profiler ┌─────────┬───────────────────┬──────────────┬─────────────────┬────────────┬────────────────┬──────────┬──────────────┬─────────────┐
  cypress:server:util:process_profiler │ (index) │       group       │ processCount │      pids       │ cpuPercent │ meanCpuPercent │ memRssMb │ meanMemRssMb │ maxMemRssMb │
  cypress:server:util:process_profiler ├─────────┼───────────────────┼──────────────┼─────────────────┼────────────┼────────────────┼──────────┼──────────────┼─────────────┤
  cypress:server:util:process_profiler │    0    │     'cypress'     │      1       │      '192'      │    0.2     │      7.88      │  356.4   │    324.89    │   385.18    │
  cypress:server:util:process_profiler │    1    │ 'electron-shared' │      3       │ '204, 362, 387' │     0      │      0.06      │  140.2   │    143.71    │    340.4    │
  cypress:server:util:process_profiler │    2    │     'plugin'      │      1       │      '442'      │     0      │       0        │  73.74   │    73.76     │    74.75    │
  cypress:server:util:process_profiler │    3    │     'ffmpeg'      │      1       │     '1901'      │     0      │      2.12      │  13.13   │    53.16     │   176.23    │
  cypress:server:util:process_profiler │    4    │      'other'      │      2       │  '1979, 1980'   │     0      │      0.1       │   3.47   │     6.38     │    86.53    │
  cypress:server:util:process_profiler │    5    │      'TOTAL'      │      8       │       '-'       │    0.2     │     19.04      │  586.94  │   1105.85    │   1475.57   │
  cypress:server:util:process_profiler └─────────┴───────────────────┴──────────────┴─────────────────┴────────────┴────────────────┴──────────┴──────────────┴─────────────┘ +10s
Failed to connect to Chrome, retrying in 1 second (attempt 27/32)
  cypress:network:connect received error on connect, retrying { iteration: 27, delay: 1000, err: Error: connect ECONNREFUSED 127.0.0.1:39999     at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1056:14) { errno: 'ECONNREFUSED', code: 'ECONNREFUSED', syscall: 'connect', address: '127.0.0.1', port: 39999 } } +1s
Failed to connect to Chrome, retrying in 1 second (attempt 28/32)
  cypress:network:connect received error on connect, retrying { iteration: 28, delay: 1000, err: Error: connect ECONNREFUSED 127.0.0.1:39999     at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1056:14) { errno: 'ECONNREFUSED', code: 'ECONNREFUSED', syscall: 'connect', address: '127.0.0.1', port: 39999 } } +1s
Failed to connect to Chrome, retrying in 1 second (attempt 29/32)
  cypress:network:connect received error on connect, retrying { iteration: 29, delay: 1000, err: Error: connect ECONNREFUSED 127.0.0.1:39999     at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1056:14) { errno: 'ECONNREFUSED', code: 'ECONNREFUSED', syscall: 'connect', address: '127.0.0.1', port: 39999 } } +1s
Failed to connect to Chrome, retrying in 1 second (attempt 30/32)
  cypress:network:connect received error on connect, retrying { iteration: 30, delay: 1000, err: Error: connect ECONNREFUSED 127.0.0.1:39999     at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1056:14) { errno: 'ECONNREFUSED', code: 'ECONNREFUSED', syscall: 'connect', address: '127.0.0.1', port: 39999 } } +1s
Failed to connect to Chrome, retrying in 1 second (attempt 31/32)
  cypress:network:connect received error on connect, retrying { iteration: 31, delay: 1000, err: Error: connect ECONNREFUSED 127.0.0.1:39999     at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1056:14) { errno: 'ECONNREFUSED', code: 'ECONNREFUSED', syscall: 'connect', address: '127.0.0.1', port: 39999 } } +1s
Failed to connect to Chrome, retrying in 1 second (attempt 32/32)
  cypress:network:connect received error on connect, retrying { iteration: 32, delay: 1000, err: Error: connect ECONNREFUSED 127.0.0.1:39999     at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1056:14) { errno: 'ECONNREFUSED', code: 'ECONNREFUSED', syscall: 'connect', address: '127.0.0.1', port: 39999 } } +1s
  cypress:network:connect retries exhausted, bubbling up error { iteration: 33, err: Error: connect ECONNREFUSED 127.0.0.1:39999     at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1056:14) { errno: 'ECONNREFUSED', code: 'ECONNREFUSED', syscall: 'connect', address: '127.0.0.1', port: 39999 } } +1s
  cypress:server:protocol failed to connect to CDP { connectOpts: { host: '127.0.0.1', port: 39999, getDelayMsForRetry: [Function: getDelayMsForRetry] }, err: Error: Cypress failed to make a connection to the Chrome DevTools Protocol after retrying for 20 seconds. This usually indicates there was a problem opening the Chrome browser. The CDP port requested was 39999. Error details: Error: connect ECONNREFUSED 127.0.0.1:39999 at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1056:14) at get (/root/.cache/Cypress/4.0.2/Cypress/resources/app/packages/server/lib/errors.js:344:11) at Object.throwErr [as throw] (/root/.cache/Cypress/4.0.2/Cypress/resources/app/packages/server/lib/errors.js:359:11) at /root/.cache/Cypress/4.0.2/Cypress/resources/app/packages/server/lib/browsers/protocol.js:95:17 at tryCatcher (/root/.cache/Cypress/4.0.2/Cypress/resources/app/packages/server/node_modules/bluebird/js/release/util.js:16:23) at Promise._settlePromiseFromHandler (/root/.cache/Cypress/4.0.2/Cypress/resources/app/packages/server/node_modules/bluebird/js/release/promise.js:547:31) at Promise._settlePromise (/root/.cache/Cypress/4.0.2/Cypress/resources/app/packages/server/node_modules/bluebird/js/release/promise.js:604:18) at Promise._settlePromise0 (/root/.cache/Cypress/4.0.2/Cypress/resources/app/packages/server/node_modules/bluebird/js/release/promise.js:649:10) at Promise._settlePromises (/root/.cache/Cypress/4.0.2/Cypress/resources/app/packages/server/node_modules/bluebird/js/release/promise.js:725:18) at _drainQueueStep (/root/.cache/Cypress/4.0.2/Cypress/resources/app/packages/server/node_modules/bluebird/js/release/async.js:93:12) at _drainQueue (/root/.cache/Cypress/4.0.2/Cypress/resources/app/packages/server/node_modules/bluebird/js/release/async.js:86:9) at Async._drainQueues (/root/.cache/Cypress/4.0.2/Cypress/resources/app/packages/server/node_modules/bluebird/js/release/async.js:102:5) at Immediate.Async.drainQueues [as _onImmediate] (/root/.cache/Cypress/4.0.2/Cypress/resources/app/packages/server/node_modules/bluebird/js/release/async.js:15:14)     at processImmediate (internal/timers.js:439:21) { isCypressErr: true, type: 'CDP_COULD_NOT_CONNECT', details: undefined } } +20s
  cypress:server:cypress exiting with err Error: Cypress failed to make a connection to the Chrome DevTools Protocol after retrying for 20 seconds.
This usually indicates there was a problem opening the Chrome browser.
The CDP port requested was 39999.
Error details:
Error: connect ECONNREFUSED 127.0.0.1:39999
    at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1056:14)

    at get (/root/.cache/Cypress/4.0.2/Cypress/resources/app/packages/server/lib/errors.js:344:11)
    at Object.throwErr [as throw] (/root/.cache/Cypress/4.0.2/Cypress/resources/app/packages/server/lib/errors.js:359:11)
    at /root/.cache/Cypress/4.0.2/Cypress/resources/app/packages/server/lib/browsers/protocol.js:95:17
    at tryCatcher (/root/.cache/Cypress/4.0.2/Cypress/resources/app/packages/server/node_modules/bluebird/js/release/util.js:16:23)
    at Promise._settlePromiseFromHandler (/root/.cache/Cypress/4.0.2/Cypress/resources/app/packages/server/node_modules/bluebird/js/release/promise.js:547:31)
    at Promise._settlePromise (/root/.cache/Cypress/4.0.2/Cypress/resources/app/packages/server/node_modules/bluebird/js/release/promise.js:604:18)
    at Promise._settlePromise0 (/root/.cache/Cypress/4.0.2/Cypress/resources/app/packages/server/node_modules/bluebird/js/release/promise.js:649:10)
    at Promise._settlePromises (/root/.cache/Cypress/4.0.2/Cypress/resources/app/packages/server/node_modules/bluebird/js/release/promise.js:725:18)
    at _drainQueueStep (/root/.cache/Cypress/4.0.2/Cypress/resources/app/packages/server/node_modules/bluebird/js/release/async.js:93:12)
    at _drainQueue (/root/.cache/Cypress/4.0.2/Cypress/resources/app/packages/server/node_modules/bluebird/js/release/async.js:86:9)
    at Async._drainQueues (/root/.cache/Cypress/4.0.2/Cypress/resources/app/packages/server/node_modules/bluebird/js/release/async.js:102:5)
    at Immediate.Async.drainQueues [as _onImmediate] (/root/.cache/Cypress/4.0.2/Cypress/resources/app/packages/server/node_modules/bluebird/js/release/async.js:15:14)
    at processImmediate (internal/timers.js:439:21)
 {
  isCypressErr: true,
  type: 'CDP_COULD_NOT_CONNECT',
  details: undefined
} +5m
Cypress failed to make a connection to the Chrome DevTools Protocol after retrying for 20 seconds.
This usually indicates there was a problem opening the Chrome browser.
The CDP port requested was 39999.
Error details:
Error: connect ECONNREFUSED 127.0.0.1:39999
    at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1056:14)
  cypress:server:cypress calling exit 1 +1ms
  cypress:server:cypress about to exit with code 1 +0ms
2020-02-24T19:00:53.240Z cypress:cli child event fired { event: 'exit', code: 1, signal: null }
2020-02-24T19:00:53.240Z cypress:cli child event fired { event: 'close', code: 1, signal: null }
2020-02-24T19:00:53.240Z cypress:cli Stopping Xvfb
[percy] stopping percy...
[percy] waiting for 0 snapshots to complete...
[percy] done.

[adomyaty55foundry]

@jennifer-shehane

Reporting in, I'm running into the same issue. using WSL 2 on Windows

`Title: Error launching browser

Message: Cypress failed to make a connection to the Chrome DevTools Protocol after retrying for 20 seconds.

This usually indicates there was a problem opening the Chrome browser.

The CDP port requested was 36647.

Error details:

Error: connect ECONNREFUSED 127.0.0.1:36647
at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1056:14)

Stack trace:

Error: Cypress failed to make a connection to the Chrome DevTools Protocol after retrying for 20 seconds.

This usually indicates there was a problem opening the Chrome browser.

The CDP port requested was �[33m36647�[39m.

Error details:

Error: connect ECONNREFUSED 127.0.0.1:36647
    at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1056:14)

    at get (/home/adomyaty/.cache/Cypress/4.1.0/Cypress/resources/app/packages/server/lib/errors.js:344:11)
    at Object.throwErr [as throw] (/home/adomyaty/.cache/Cypress/4.1.0/Cypress/resources/app/packages/server/lib/errors.js:359:11)
    at /home/adomyaty/.cache/Cypress/4.1.0/Cypress/resources/app/packages/server/lib/browsers/protocol.js:95:17
    at tryCatcher (/home/adomyaty/.cache/Cypress/4.1.0/Cypress/resources/app/packages/server/node_modules/bluebird/js/release/util.js:16:23)
    at Promise._settlePromiseFromHandler (/home/adomyaty/.cache/Cypress/4.1.0/Cypress/resources/app/packages/server/node_modules/bluebird/js/release/promise.js:547:31)
    at Promise._settlePromise (/home/adomyaty/.cache/Cypress/4.1.0/Cypress/resources/app/packages/server/node_modules/bluebird/js/release/promise.js:604:18)
    at Promise._settlePromise0 (/home/adomyaty/.cache/Cypress/4.1.0/Cypress/resources/app/packages/server/node_modules/bluebird/js/release/promise.js:649:10)
    at Promise._settlePromises (/home/adomyaty/.cache/Cypress/4.1.0/Cypress/resources/app/packages/server/node_modules/bluebird/js/release/promise.js:725:18)
    at _drainQueueStep (/home/adomyaty/.cache/Cypress/4.1.0/Cypress/resources/app/packages/server/node_modules/bluebird/js/release/async.js:93:12)
    at _drainQueue (/home/adomyaty/.cache/Cypress/4.1.0/Cypress/resources/app/packages/server/node_modules/bluebird/js/release/async.js:86:9)
    at Async._drainQueues (/home/adomyaty/.cache/Cypress/4.1.0/Cypress/resources/app/packages/server/node_modules/bluebird/js/release/async.js:102:5)
    at Immediate.Async.drainQueues [as _onImmediate] (/home/adomyaty/.cache/Cypress/4.1.0/Cypress/resources/app/packages/server/node_modules/bluebird/js/release/async.js:15:14)
    at processImmediate (internal/timers.js:439:21)

Let me know if DEBUG is needed as well and I can provide. FYI this problem only happens when running chrome. Headless works fine. I had this problem since Cypress 3.8 or so after upgrading to 4.1 issue still persists. It working before 3.8 as far as I recall

[limonte]

This issue is the follow-up for #6053 and its fix #6133 (cc @bahmutov)

happened for me as well, here's the build: https://github.com/sweetalert2/sweetalert2/commit/7d31830a6f7a9757e6a9efff56087f8501cd0e84/checks?check_suite_id=504036788

[filiphric]

I have another issue which might be related and shed some more light on this (or maybe not). I tried grouping my tests and calling runs using module api like this:

allGroups.forEach(group => {
  run(group); // function that calls cypress.run() and sets up config, so that each group has correct group name
});

Side note: my tests were not grouped like this when I opened the issue.

While running on multiple machines, several of them errored, but some of them finished without problems. I suspect there might be a problematic moment at the time one function finishes, and other starts.

snippet from debug, end of the run:

cypress:server:util:process_profiler current & mean memory and CPU usage by process group:
  cypress:server:util:process_profiler ┌─────────┬───────────────────┬──────────────┬────────────────────┬────────────┬────────────────┬──────────┬──────────────┬─────────────┐
  cypress:server:util:process_profiler │ (index) │       group       │ processCount │        pids        │ cpuPercent │ meanCpuPercent │ memRssMb │ meanMemRssMb │ maxMemRssMb │
  cypress:server:util:process_profiler ├─────────┼───────────────────┼──────────────┼────────────────────┼────────────┼────────────────┼──────────┼──────────────┼─────────────┤
  cypress:server:util:process_profiler │    0    │     'cypress'     │      1       │       '1086'       │   13.94    │      6.06      │  269.65  │    304.46    │   387.55    │
  cypress:server:util:process_profiler │    1    │ 'electron-shared' │      3       │ '1099, 1643, 1729' │     0      │       0        │  140.39  │    129.08    │   140.39    │
  cypress:server:util:process_profiler │    2    │     'plugin'      │      1       │       '1897'       │     0      │      0.23      │  83.49   │    140.98    │   549.96    │
  cypress:server:util:process_profiler │    3    │      'other'      │      2       │    '4675, 4678'    │     0      │       0        │   3.38   │     3.41     │    3.46     │
  cypress:server:util:process_profiler │    4    │      'TOTAL'      │      7       │        '-'         │   13.94    │      9.59      │  496.91  │    867.74    │   1493.33   │
  cypress:server:util:process_profiler └─────────┴───────────────────┴──────────────┴────────────────────┴────────────┴────────────────┴──────────┴──────────────┴─────────────┘ +10s
  cypress:server:cypress about to exit with code 0 +1m
2020-03-18T08:47:27.183Z cypress:cli child event fired { event: 'exit', code: 0, signal: null }
2020-03-18T08:47:27.183Z cypress:cli child event fired { event: 'close', code: 0, signal: null }
2020-03-18T08:47:27.183Z cypress:cli Stopping Xvfb
[1095:0318/084727.183888:ERROR:electron_browser_main_parts.cc(199)] X IO error received (X server probably went away)
[1606:0318/084727.184901:ERROR:x11_util.cc(109)] X IO error received (X server probably went away)
[1095:0318/084727.192208:WARNING:gpu_process_host.cc(1166)] The GPU process has crashed 1 time(s)
2020-03-18T08:47:27.277Z cypress:cli child event fired { event: 'exit', code: 1, signal: null }

then I deleted the forEach loop, problem went away, although I’m still experiencing issue I’m mentioning at the beginning of this thread from time to time.

[tipsey]

Ubuntu 19, Chromium, Version 80.0.3987.149 (Official Build) snap (64-bit)
-hosts file is only 127.0.0.1 #commented out everything else
Title: Error launching browser

Message: Cypress failed to make a connection to the Chrome DevTools Protocol after retrying for 20 seconds.

This usually indicates there was a problem opening the Chrome browser.

The CDP port requested was 36771.

Error details:

Error: connect ECONNREFUSED 127.0.0.1:36771
at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1128:14)

Stack trace:

Error: Cypress failed to make a connection to the Chrome DevTools Protocol after retrying for 20 seconds.

This usually indicates there was a problem opening the Chrome browser.

The CDP port requested was �[33m36771�[39m.

Error details:

Error: connect ECONNREFUSED 127.0.0.1:36771
    at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1128:14)

    at get (/home/sqa/.cache/Cypress/4.2.0/Cypress/resources/app/packages/server/lib/errors.js:348:11)
    at Object.throwErr [as throw] (/home/sqa/.cache/Cypress/4.2.0/Cypress/resources/app/packages/server/lib/errors.js:363:11)
    at /home/sqa/.cache/Cypress/4.2.0/Cypress/resources/app/packages/server/lib/browsers/protocol.js:95:17
    at tryCatcher (/home/sqa/.cache/Cypress/4.2.0/Cypress/resources/app/packages/server/node_modules/bluebird/js/release/util.js:16:23)
    at Promise._settlePromiseFromHandler (/home/sqa/.cache/Cypress/4.2.0/Cypress/resources/app/packages/server/node_modules/bluebird/js/release/promise.js:547:31)
    at Promise._settlePromise (/home/sqa/.cache/Cypress/4.2.0/Cypress/resources/app/packages/server/node_modules/bluebird/js/release/promise.js:604:18)
    at Promise._settlePromise0 (/home/sqa/.cache/Cypress/4.2.0/Cypress/resources/app/packages/server/node_modules/bluebird/js/release/promise.js:649:10)
    at Promise._settlePromises (/home/sqa/.cache/Cypress/4.2.0/Cypress/resources/app/packages/server/node_modules/bluebird/js/release/promise.js:725:18)
    at _drainQueueStep (/home/sqa/.cache/Cypress/4.2.0/Cypress/resources/app/packages/server/node_modules/bluebird/js/release/async.js:93:12)
    at _drainQueue (/home/sqa/.cache/Cypress/4.2.0/Cypress/resources/app/packages/server/node_modules/bluebird/js/release/async.js:86:9)
    at Async._drainQueues (/home/sqa/.cache/Cypress/4.2.0/Cypress/resources/app/packages/server/node_modules/bluebird/js/release/async.js:102:5)
    at Immediate.Async.drainQueues [as _onImmediate] (/home/sqa/.cache/Cypress/4.2.0/Cypress/resources/app/packages/server/node_modules/bluebird/js/release/async.js:15:14)
    at processImmediate (internal/timers.js:439:21)

[noor-tg]

@tipsey same config . how to fix it ?

[tipsey]

I think the problem on Ubuntu 19 is Chromium is installed via SNAP process. Cypress works on Electron and Firefox(Beta) but I don't want to try a Deb install on Ubuntu because it may break future Chromium releases. I found a Link to do this but don't want to toast my Ubunut: https://shevchuk.co/notes/2019/12/13/install-chromium-on-ubuntu-1910-from-debian-instead-of-snap

[tipsey]

@tipsey same config . how to fix it ?

I think the problem on Ubuntu 19 is Chromium is installed via SNAP process. Cypress works on Electron and Firefox(Beta) but I don't want to try a Deb install on Ubuntu because it may break future Chromium releases. I found a Link to do this but don't want to toast my Ubunut: https://shevchuk.co/notes/2019/12/13/install-chromium-on-ubuntu-1910-from-debian-instead-of-snap

[lonewarrior556]

I have the same problem when I do cypress open

:~$ lsb_release -d
Description:	Ubuntu 18.04.3 LTS

:~$ chromium --version
Chromium 80.0.3987.163 snap

:~$ which chromium
/snap/bin/chromium

what's interesting is the tests run fine doing cypress run --headed

[leorigon]

Same problem here, a downgrade to 4.2.0 can solve it?