Error on rebuild : No child processes (Errno::ECHILD) from /pups/lib/pups/exec_command.rb:88:in `block in spawn'

Hi. wanted to install a plugin (data explorer) so I added the git line in my app.yml.
The rebuild failed:

2018-06-19 23:24:37.160 UTC [74] LOG:  shutting down
186:M 19 Jun 23:24:37.218 # User requested shutdown...
186:M 19 Jun 23:24:37.218 * Saving the final RDB snapshot before exiting.
2018-06-19 23:24:37.275 UTC [70] LOG:  database system is shut down
#<Thread:0x0000559a6007cd08@/pups/lib/pups/exec_command.rb:87 run> terminated wi
th exception (report_on_exception is true):
/pups/lib/pups/exec_command.rb:88:in `wait': No child processes (Errno::ECHILD)
        from /pups/lib/pups/exec_command.rb:88:in `block in spawn'
186:M 19 Jun 23:24:37.348 * DB saved on disk
186:M 19 Jun 23:24:37.348 # Redis is now ready to exit, bye bye...
#<Thread:0x0000559a6005d548@/pups/lib/pups/exec_command.rb:87 run> terminated wi
th exception (report_on_exception is true):
/pups/lib/pups/exec_command.rb:88:in `wait': No child processes (Errno::ECHILD)
        from /pups/lib/pups/exec_command.rb:88:in `block in spawn'

Pups::ExecError: cd /var/www/discourse && su discourse -c 'bundle exec rake db:m                                     igrate' failed with return #<Process::Status: pid 554 exit 1>
Location of failure: /pups/lib/pups/exec_command.rb:108:in `spawn'
exec failed with the params {"cd"=>"$home", "hook"=>"bundle_exec", "cmd"=>["su d                                     iscourse -c 'bundle install --deployment --verbose --without test --without deve                                     lopment --retry 3 --jobs 4'", "su discourse -c 'bundle exec rake db:migrate'", "
su discourse -c 'bundle exec rake assets:precompile'"]}
** FAILED TO BOOTSTRAP ** please scroll up and look for earlier error messages, 
there may be more than one

I thought it was maybe because of the plugin, so I removed it from my app.yml and rebuilt again, same error.
My Discourse works at this time, but I can’t rebuild and it may cause issues in the future so I need to resolve this.

Any idea how to fix it?

This is a known issue in our new image cc @falco @sam there is an error being reported as part of the rebuild, every time.


I see what this is:

Will sort out pups to allow for this.


Okay so nothing to do on my side, just waiting for an update I guess :slight_smile:


Oh the particular error you are seeing in the logs (which I just fixed) is unrelated.

bundle exec rake assets:precompile is failing for you which is usually due to plugins. I would try rebuilding again and triple check there are no plugins involved.


Yes it was because of a plugin. Weird, it didn’t cause this issue before.