[!] Too many open files - fork failed (FastlaneCore::FastlanePtyError)

[vanniktech]

New Issue Checklist

• Updated fastlane to the latest version
• I read the Contribution Guidelines
• I read docs.fastlane.tools
• I searched for existing GitHub issues

Issue Description

/Users/niklas/.gem/ruby/3.3.0/gems/fastlane-2.219.0/fastlane_core/lib/fastlane_core/fastlane_pty.rb:31:in `spawn': [!] Too many open files - fork failed (FastlaneCore::FastlanePtyError)
	from /Users/niklas/.gem/ruby/3.3.0/gems/fastlane-2.219.0/fastlane_core/lib/fastlane_core/fastlane_pty.rb:31:in `spawn_with_pty'
	from /Users/niklas/.gem/ruby/3.3.0/gems/fastlane-2.219.0/fastlane_core/lib/fastlane_core/fastlane_pty.rb:24:in `spawn'
	from /Users/niklas/.gem/ruby/3.3.0/gems/fastlane-2.219.0/fastlane_core/lib/fastlane_core/command_executor.rb:46:in `execute'
	from /Users/niklas/.gem/ruby/3.3.0/gems/fastlane-2.219.0/screengrab/lib/screengrab/runner.rb:417:in `run_adb_command'
	from /Users/niklas/.gem/ruby/3.3.0/gems/fastlane-2.219.0/screengrab/lib/screengrab/runner.rb:280:in `run_tests_for_locale'
	from /Users/niklas/.gem/ruby/3.3.0/gems/fastlane-2.219.0/screengrab/lib/screengrab/runner.rb:260:in `block in run_tests'
	from /Users/niklas/.gem/ruby/3.3.0/gems/fastlane-2.219.0/screengrab/lib/screengrab/runner.rb:252:in `each'
	from /Users/niklas/.gem/ruby/3.3.0/gems/fastlane-2.219.0/screengrab/lib/screengrab/runner.rb:252:in `run_tests'
	from /Users/niklas/.gem/ruby/3.3.0/gems/fastlane-2.219.0/screengrab/lib/screengrab/runner.rb:70:in `run'
	from /Users/niklas/.gem/ruby/3.3.0/gems/fastlane-2.219.0/screengrab/lib/screengrab/commands_generator.rb:50:in `block (2 levels) in run'
	from /Users/niklas/.gem/ruby/3.3.0/gems/commander-4.6.0/lib/commander/command.rb:187:in `call'
	from /Users/niklas/.gem/ruby/3.3.0/gems/commander-4.6.0/lib/commander/command.rb:157:in `run'
	from /Users/niklas/.gem/ruby/3.3.0/gems/commander-4.6.0/lib/commander/runner.rb:444:in `run_active_command'
	from /Users/niklas/.gem/ruby/3.3.0/gems/fastlane-2.219.0/fastlane_core/lib/fastlane_core/ui/fastlane_runner.rb:124:in `run!'
	from /Users/niklas/.gem/ruby/3.3.0/gems/commander-4.6.0/lib/commander/delegates.rb:18:in `run!'
	from /Users/niklas/.gem/ruby/3.3.0/gems/fastlane-2.219.0/screengrab/lib/screengrab/commands_generator.rb:68:in `run'
	from /Users/niklas/.gem/ruby/3.3.0/gems/fastlane-2.219.0/screengrab/lib/screengrab/commands_generator.rb:20:in `start'
	from /Users/niklas/.gem/ruby/3.3.0/gems/fastlane-2.219.0/fastlane/lib/fastlane/cli_tools_distributor.rb:115:in `take_off'
	from /Users/niklas/.gem/ruby/3.3.0/gems/fastlane-2.219.0/bin/fastlane:23:in `<top (required)>'
	from /usr/local/bin/fastlane:23:in `load'
	from /usr/local/bin/fastlane:23:in `<main>'
/Users/niklas/.gem/ruby/3.3.0/gems/fastlane-2.219.0/fastlane_core/lib/fastlane_core/fastlane_pty.rb:31:in `spawn': Too many open files - fork failed (Errno::EMFILE)
	from /Users/niklas/.gem/ruby/3.3.0/gems/fastlane-2.219.0/fastlane_core/lib/fastlane_core/fastlane_pty.rb:31:in `spawn_with_pty'
	from /Users/niklas/.gem/ruby/3.3.0/gems/fastlane-2.219.0/fastlane_core/lib/fastlane_core/fastlane_pty.rb:24:in `spawn'
	from /Users/niklas/.gem/ruby/3.3.0/gems/fastlane-2.219.0/fastlane_core/lib/fastlane_core/command_executor.rb:46:in `execute'
	from /Users/niklas/.gem/ruby/3.3.0/gems/fastlane-2.219.0/screengrab/lib/screengrab/runner.rb:417:in `run_adb_command'
	from /Users/niklas/.gem/ruby/3.3.0/gems/fastlane-2.219.0/screengrab/lib/screengrab/runner.rb:280:in `run_tests_for_locale'
	from /Users/niklas/.gem/ruby/3.3.0/gems/fastlane-2.219.0/screengrab/lib/screengrab/runner.rb:260:in `block in run_tests'
	from /Users/niklas/.gem/ruby/3.3.0/gems/fastlane-2.219.0/screengrab/lib/screengrab/runner.rb:252:in `each'
	from /Users/niklas/.gem/ruby/3.3.0/gems/fastlane-2.219.0/screengrab/lib/screengrab/runner.rb:252:in `run_tests'
	from /Users/niklas/.gem/ruby/3.3.0/gems/fastlane-2.219.0/screengrab/lib/screengrab/runner.rb:70:in `run'
	from /Users/niklas/.gem/ruby/3.3.0/gems/fastlane-2.219.0/screengrab/lib/screengrab/commands_generator.rb:50:in `block (2 levels) in run'
	from /Users/niklas/.gem/ruby/3.3.0/gems/commander-4.6.0/lib/commander/command.rb:187:in `call'
	from /Users/niklas/.gem/ruby/3.3.0/gems/commander-4.6.0/lib/commander/command.rb:157:in `run'
	from /Users/niklas/.gem/ruby/3.3.0/gems/commander-4.6.0/lib/commander/runner.rb:444:in `run_active_command'
	from /Users/niklas/.gem/ruby/3.3.0/gems/fastlane-2.219.0/fastlane_core/lib/fastlane_core/ui/fastlane_runner.rb:124:in `run!'
	from /Users/niklas/.gem/ruby/3.3.0/gems/commander-4.6.0/lib/commander/delegates.rb:18:in `run!'
	from /Users/niklas/.gem/ruby/3.3.0/gems/fastlane-2.219.0/screengrab/lib/screengrab/commands_generator.rb:68:in `run'
	from /Users/niklas/.gem/ruby/3.3.0/gems/fastlane-2.219.0/screengrab/lib/screengrab/commands_generator.rb:20:in `start'
	from /Users/niklas/.gem/ruby/3.3.0/gems/fastlane-2.219.0/fastlane/lib/fastlane/cli_tools_distributor.rb:115:in `take_off'
	from /Users/niklas/.gem/ruby/3.3.0/gems/fastlane-2.219.0/bin/fastlane:23:in `<top (required)>'
	from /usr/local/bin/fastlane:23:in `load'
	from /usr/local/bin/fastlane:23:in `<main>'

I believe this is because I have many languages for screen grabbing:

locales(['bg', 'cs-CZ', 'da-DK', 'de-DE', 'el-GR', 'en-US', 'es-ES', 'et', 'fi-FI', 'fr-FR', 'hu-HU', 'id', 'it-IT', 'ja-JP', 'lt', 'lv', 'nl-NL', 'pl-PL', 'pt-BR', 'pt-PT', 'ro', 'ru-RU', 'sk', 'sl', 'sv-SE', 'tr-TR', 'uk', 'zh-CN', 'zh-TW'])

I just ran:

fastlane screengrab --device_type 'phone'

It failed when trying to grab the screenshots for ja-JP.

Environment

🚫 fastlane environment 🚫

Stack

Key	Value
OS	14.3.1
Ruby	3.3.0
Bundler?	false
Git	git version 2.44.0
Installation Source	/usr/local/bin/fastlane
Host	macOS 14.3.1 (23D60)
Ruby Lib Dir	/opt/homebrew/Cellar/ruby/3.3.0/lib
OpenSSL Version	OpenSSL 3.2.0 23 Nov 2023
Is contained	false
Is homebrew	false
Is installed via Fabric.app	false
Xcode Path	/Applications/Xcode.app/Contents/Developer/
Xcode Version	15.2
Swift Version	5.9.2

System Locale

Variable	Value
LANG	en_US.UTF-8	✅
LC_ALL	en_US.UTF-8	✅
LANGUAGE

fastlane files:

No Fastfile found

No Appfile found

fastlane gems

Gem	Version	Update-Status
fastlane	2.219.0	🚫 Update available

Loaded fastlane plugins:

No plugins Loaded

Loaded gems

Gem	Version
error_highlight	0.6.0
did_you_mean	1.6.3
syntax_suggest	2.0.0
public_suffix	5.0.5
addressable	2.8.6
artifactory	3.0.17
babosa	1.0.4
rexml	3.2.6
base64	0.2.0
CFPropertyList	3.0.7
colored	1.2
highline	2.0.3
commander	4.6.0
dotenv	2.8.1
emoji_regex	3.2.3
excon	0.110.0
faraday-em_http	1.0.0
faraday-em_synchrony	1.0.0
faraday-excon	1.1.0
faraday-httpclient	1.0.1
faraday-multipart	1.0.4
faraday-net_http	1.0.1
faraday-net_http_persistent	1.2.0
faraday-patron	1.0.0
faraday-rack	1.0.0
faraday-retry	1.0.3
ruby2_keywords	0.0.5
faraday	1.10.3
faraday_middleware	1.2.0
domain_name	0.6.20240107
http-cookie	1.0.5
faraday-cookie_jar	0.0.7
fastimage	2.3.1
gh_inspector	1.1.3
google-cloud-env	1.6.0
jwt	2.8.1
mini_magick	4.12.0
naturally	2.2.1
plist	3.7.1
rubyzip	2.3.2
security	0.1.3
simctl	1.6.10
terminal-notifier	2.0.0
unicode-display_width	2.5.0
terminal-table	3.0.2
tty-screen	0.8.2
tty-cursor	0.7.1
tty-spinner	0.9.3
word_wrap	1.0.0
atomos	0.1.3
claide	1.1.0
colored2	3.1.2
nanaimo	0.3.0
xcodeproj	1.24.0
rouge	2.0.7
xcpretty	0.3.0
xcpretty-travis-formatter	1.0.1
set	1.1.0
aws-eventstream	1.3.0
aws-sigv4	1.8.0
aws-partitions	1.927.0
jmespath	1.6.2
aws-sdk-core	3.195.0
aws-sdk-kms	1.80.0
aws-sdk-s3	1.149.1
bundler	2.5.6
nkf	0.2.0
multipart-post	2.4.1
httpclient	2.8.3
multi_json	1.15.0
signet	0.19.0
os	1.1.4
googleauth	1.8.1
mini_mime	1.1.5
retriable	3.1.2
trailblazer-option	0.1.2
declarative	0.0.20
uber	0.1.0
representable	3.2.0
google-apis-core	0.11.3
google-apis-androidpublisher_v3	0.54.0
google-apis-playcustomapp_v1	0.13.0
rake	13.2.1
digest-crc	0.6.5
google-apis-storage_v1	0.31.0
google-apis-iamcredentials_v1	0.17.0
google-cloud-errors	1.4.0
google-cloud-core	1.7.0
google-cloud-storage	1.47.0
json	2.7.2
optparse	0.5.0
forwardable	1.3.3
logger	1.6.0
pathname	0.3.0
shellwords	0.2.0
cgi	0.4.1
date	3.3.4
timeout	0.4.1
securerandom	0.3.1
cookiejar	0.3.4
eventmachine	1.2.7
em-socksify	0.3.2
http_parser.rb	0.8.0
em-http-request	1.1.7
resolv	0.3.0
openssl	3.2.0
digest	3.1.1
ipaddr	1.2.6
time	0.3.0
uri	0.13.0
stringio	3.1.0
open-uri	0.4.1
mutex_m	0.2.0
net-http	0.4.1
net-protocol	0.2.2
connection_pool	2.4.1
net-http-persistent	4.0.2
patron	0.13.3
english	0.8.0
erb	4.0.4
abbrev	0.1.2
tempfile	0.2.1
delegate	0.3.1
fileutils	1.7.2
tmpdir	0.2.0
singleton	0.2.0
open3	0.2.1
prettyprint	0.2.0
pp	0.5.0
find	0.2.0
ostruct	0.6.0
yaml	0.3.0
psych	5.1.2

generated on: 2024-05-14

[vanniktech]

fastlane is kinda stuck here. I can't even with one locale continue to try grabbing screenshots. Also re-creating the the entire simulator does not help so it must be something local on my machine.

[vanniktech]

It seems like setting ulimit -S -n 512 did the trick. Previously I had 256 when I executed: ulimit -a. However, 256 should be plenty. I only had this simulator running. Could it be that fastlane does not properly close opened files?