Brew services list gave me error

[ExsyDev]

brew config output

HOMEBREW_VERSION: 3.2.16
ORIGIN: https://github.com/Homebrew/brew
HEAD: 09b7ab2c1de3ab32f385aac922b2cd644fdd7c79
Last commit: 3 days ago
Core tap ORIGIN: https://github.com/Homebrew/homebrew-core
Core tap HEAD: 6d6a4aa9ba0d0f2688b07ea0df3d90a9a5f40f81
Core tap last commit: 77 minutes ago
Core tap branch: master
HOMEBREW_PREFIX: /opt/homebrew
HOMEBREW_CASK_OPTS: []
HOMEBREW_MAKE_JOBS: 8
Homebrew Ruby: 2.6.3 => /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/bin/ruby
CPU: octa-core 64-bit arm_firestorm_icestorm
Clang: 13.0.0 build 1300
Git: 2.30.1 => /Applications/Xcode.app/Contents/Developer/usr/bin/git
Curl: 7.64.1 => /usr/bin/curl
macOS: 11.6-arm64
CLT: 13.0.0.0.1.1630607135
Xcode: 13.0
Rosetta 2: false

brew doctor output

Your system is ready to brew.

• I ran brew update and am still able to reproduce my issue.
• I have resolved all warnings from brew doctor and that did not fix my problem.

What were you trying to do (and why)?

I try run brew services list for see services list.

What happened (include all command output)?

I get error after running command brew services list:

Error: undefined method `chomp' for nil:NilClass
/opt/homebrew/Library/Taps/homebrew/homebrew-services/lib/service/services_cli.rb:53:in `user_of_process'
/opt/homebrew/Library/Taps/homebrew/homebrew-services/lib/service/services_cli.rb:139:in `block in list'
/opt/homebrew/Library/Taps/homebrew/homebrew-services/lib/service/services_cli.rb:127:in `map'
/opt/homebrew/Library/Taps/homebrew/homebrew-services/lib/service/services_cli.rb:127:in `list'
/opt/homebrew/Library/Taps/homebrew/homebrew-services/lib/service/commands/list.rb:9:in `run'
/opt/homebrew/Library/Taps/homebrew/homebrew-services/cmd/services.rb:84:in `services'
/opt/homebrew/Library/Homebrew/brew.rb:129:in `<main>'

What did you expect to happen?

I happen see my services list.

Step-by-step reproduction instructions (by running brew commands)

Simple run command brew services list. 

Note: If I run command with sudo: sudo brew services list, then command working. But without sudo command is not work :(. Help me please

[carlocab]

Looks like the error comes from here:

        Utils.safe_popen_read("ps", "-o", "user", "-p", pid.to_s).lines.second.chomp

Changing this to

        Utils.popen_read("ps", "-o", "user", "-p", pid.to_s).lines.second&.chomp

will fix the error, but I'm not sure this is the intended behaviour.

Have you ever done sudo brew services start?

[ExsyDev]

Looks like the error comes from here:

        Utils.safe_popen_read("ps", "-o", "user", "-p", pid.to_s).lines.second.chomp

Changing this to

        Utils.popen_read("ps", "-o", "user", "-p", pid.to_s).lines.second&.chomp

will fix the error, but I'm not sure this is the intended behaviour.

Have you ever done sudo brew services start?

Yep. On install brew in first time everything worked well, and after update this bug began to appear

[MikeMcQuaid]

@SMillerDev any thoughts?

[SMillerDev]

I think if the patch from @carlocab works we should use it. (and add a test for it)

[ExsyDev]

@SMillerDev @MikeMcQuaid , I figured out why, this error happens after installing redis via brew. Try install redis and you see error after executing brew services list. If I remove redis from brew, then command brew services list working good.

[ExsyDev]

@SMillerDev there is no error now, but when I run brew services list my editor opening some files: https://imgur.com/a/VJC0P3i

How I can prevent this?

[SMillerDev]

It's hard to see which files your editor opened but I don't know what could be happening there. No code change in brew services tells anything to open a file.

[ExsyDev]

It's hard to see which files your editor opened but I don't know what could be happening there. No code change in brew services tells anything to open a file.

It was before even with that error

[SMillerDev]

if you run ps aux, does it show a list of running processes? If not, what does which ps say?

[ExsyDev]

if you run ps aux, does it show a list of running processes? If not, what does which ps say?

If I run ps aux, then my editor opening file aux and shows nothing. If I run which ps it says: /usr/local/bin/ps and does not open any files.

[SMillerDev]

Yeah, somehow your system ps command is being overwritten by your editor. I'll see if there is a way we can work around it, but I would recommend just removing /usr/local/bin/ps to get brew services working

[ExsyDev]

Yeah, somehow your system ps command is being overwritten by your editor. I'll see if there is a way we can work around it, but I would recommend just removing /usr/local/bin/ps to get brew services working

Yep. Now working good and does not open any files when I run brew services list. Thanks very much!