NoMethodError (undefined method `find' for #<String:0x00000001198ffa60>)

[hrdwdmrbl]

NoMethodError (undefined method `find' for #<String:0x00000001198ffa60>):
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/rorvswild-1.5.13/lib/rorvswild/locator.rb:15:in `find_most_relevant_location'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/rorvswild-1.5.13/lib/rorvswild/locator.rb:10:in `find_most_relevant_file_and_line'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/rorvswild-1.5.13/lib/rorvswild/locator.rb:22:in `find_most_relevant_file_and_line_from_exception'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/rorvswild-1.5.13/lib/rorvswild/agent.rb:178:in `exception_to_hash'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/rorvswild-1.5.13/lib/rorvswild/agent.rb:111:in `push_exception'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/rorvswild-1.5.13/lib/rorvswild/agent.rb:77:in `rescue in measure_job'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/rorvswild-1.5.13/lib/rorvswild/agent.rb:76:in `measure_job'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/rorvswild-1.5.13/lib/rorvswild/plugin/active_job.rb:12:in `around_perform'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/activesupport-6.1.6/lib/active_support/callbacks.rb:126:in `instance_exec'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/activesupport-6.1.6/lib/active_support/callbacks.rb:126:in `block in run_callbacks'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/i18n-1.10.0/lib/i18n.rb:323:in `with_locale'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/activejob-6.1.6/lib/active_job/translation.rb:9:in `block (2 levels) in <module:Translation>'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/activesupport-6.1.6/lib/active_support/callbacks.rb:126:in `instance_exec'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/activesupport-6.1.6/lib/active_support/callbacks.rb:126:in `block in run_callbacks'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/activesupport-6.1.6/lib/active_support/core_ext/time/zones.rb:66:in `use_zone'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/activejob-6.1.6/lib/active_job/timezones.rb:9:in `block (2 levels) in <module:Timezones>'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/activesupport-6.1.6/lib/active_support/callbacks.rb:126:in `instance_exec'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/activesupport-6.1.6/lib/active_support/callbacks.rb:126:in `block in run_callbacks'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/activejob-6.1.6/lib/active_job/instrumentation.rb:21:in `block in instrument'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/activesupport-6.1.6/lib/active_support/notifications.rb:203:in `block in instrument'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/activesupport-6.1.6/lib/active_support/notifications/instrumenter.rb:24:in `instrument'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/activesupport-6.1.6/lib/active_support/notifications.rb:203:in `instrument'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/activejob-6.1.6/lib/active_job/instrumentation.rb:31:in `instrument'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/activejob-6.1.6/lib/active_job/instrumentation.rb:14:in `block (2 levels) in <module:Instrumentation>'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/activesupport-6.1.6/lib/active_support/callbacks.rb:126:in `instance_exec'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/activesupport-6.1.6/lib/active_support/callbacks.rb:126:in `block in run_callbacks'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/activejob-6.1.6/lib/active_job/logging.rb:22:in `block in tag_logger'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/activesupport-6.1.6/lib/active_support/tagged_logging.rb:99:in `block in tagged'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/activesupport-6.1.6/lib/active_support/tagged_logging.rb:37:in `tagged'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/activesupport-6.1.6/lib/active_support/tagged_logging.rb:99:in `tagged'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/activejob-6.1.6/lib/active_job/logging.rb:22:in `tag_logger'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/activejob-6.1.6/lib/active_job/logging.rb:15:in `block (2 levels) in <module:Logging>'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/activesupport-6.1.6/lib/active_support/callbacks.rb:126:in `instance_exec'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/activesupport-6.1.6/lib/active_support/callbacks.rb:126:in `block in run_callbacks'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/activesupport-6.1.6/lib/active_support/callbacks.rb:137:in `run_callbacks'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/activejob-6.1.6/lib/active_job/execution.rb:47:in `perform_now'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/activejob-6.1.6/lib/active_job/execution.rb:18:in `perform_now'
(irb):1:in `irb_binding'
/Users/marcbeaupre/.rvm/rubies/ruby-2.7.6/lib/ruby/2.7.0/irb/workspace.rb:114:in `eval'
/Users/marcbeaupre/.rvm/rubies/ruby-2.7.6/lib/ruby/2.7.0/irb/workspace.rb:114:in `evaluate'
/Users/marcbeaupre/.rvm/rubies/ruby-2.7.6/lib/ruby/2.7.0/irb/context.rb:459:in `evaluate'
/Users/marcbeaupre/.rvm/rubies/ruby-2.7.6/lib/ruby/2.7.0/irb.rb:541:in `block (2 levels) in eval_input'
/Users/marcbeaupre/.rvm/rubies/ruby-2.7.6/lib/ruby/2.7.0/irb.rb:704:in `signal_status'
/Users/marcbeaupre/.rvm/rubies/ruby-2.7.6/lib/ruby/2.7.0/irb.rb:538:in `block in eval_input'
/Users/marcbeaupre/.rvm/rubies/ruby-2.7.6/lib/ruby/2.7.0/irb/ruby-lex.rb:166:in `block (2 levels) in each_top_level_statement'
/Users/marcbeaupre/.rvm/rubies/ruby-2.7.6/lib/ruby/2.7.0/irb/ruby-lex.rb:151:in `loop'
/Users/marcbeaupre/.rvm/rubies/ruby-2.7.6/lib/ruby/2.7.0/irb/ruby-lex.rb:151:in `block in each_top_level_statement'
/Users/marcbeaupre/.rvm/rubies/ruby-2.7.6/lib/ruby/2.7.0/irb/ruby-lex.rb:150:in `catch'
/Users/marcbeaupre/.rvm/rubies/ruby-2.7.6/lib/ruby/2.7.0/irb/ruby-lex.rb:150:in `each_top_level_statement'
/Users/marcbeaupre/.rvm/rubies/ruby-2.7.6/lib/ruby/2.7.0/irb.rb:537:in `eval_input'
/Users/marcbeaupre/.rvm/rubies/ruby-2.7.6/lib/ruby/2.7.0/irb.rb:472:in `block in run'
/Users/marcbeaupre/.rvm/rubies/ruby-2.7.6/lib/ruby/2.7.0/irb.rb:471:in `catch'
/Users/marcbeaupre/.rvm/rubies/ruby-2.7.6/lib/ruby/2.7.0/irb.rb:471:in `run'
/Users/marcbeaupre/.rvm/rubies/ruby-2.7.6/lib/ruby/2.7.0/irb.rb:400:in `start'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/railties-6.1.6/lib/rails/commands/console/console_command.rb:70:in `start'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/railties-6.1.6/lib/rails/commands/console/console_command.rb:19:in `start'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/railties-6.1.6/lib/rails/commands/console/console_command.rb:102:in `perform'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/thor-1.2.1/lib/thor/command.rb:27:in `run'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/thor-1.2.1/lib/thor/invocation.rb:127:in `invoke_command'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/thor-1.2.1/lib/thor.rb:392:in `dispatch'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/railties-6.1.6/lib/rails/command/base.rb:69:in `perform'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/railties-6.1.6/lib/rails/command.rb:48:in `invoke'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/railties-6.1.6/lib/rails/commands.rb:18:in `<main>'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/bootsnap-1.12.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/bootsnap-1.12.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/zeitwerk-2.6.0/lib/zeitwerk/kernel.rb:35:in `require'
/Users/marcbeaupre/workspace/Horse/bin/rails:9:in `<main>'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/bootsnap-1.12.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:39:in `load'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/bootsnap-1.12.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:39:in `load'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/activesupport-6.1.6/lib/active_support/fork_tracker.rb:10:in `block in fork'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/activesupport-6.1.6/lib/active_support/fork_tracker.rb:8:in `fork'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/activesupport-6.1.6/lib/active_support/fork_tracker.rb:8:in `fork'
/Users/marcbeaupre/.rvm/gems/ruby-2.7.6/gems/activesupport-6.1.6/lib/active_support/fork_tracker.rb:27:in `fork'
/Users/marcbeaupre/.rvm/rubies/ruby-2.7.6/lib/ruby/2.7.0/rubygems/core_ext/kernel_require.rb:83:in `require'
/Users/marcbeaupre/.rvm/rubies/ruby-2.7.6/lib/ruby/2.7.0/rubygems/core_ext/kernel_require.rb:83:in `require'
-e:1:in `<main>'
Traceback (most recent call last):
        1: from (irb):1
NoMethodError (undefined method `find' for #<String:0x00000001198ffa60>)

[alexisbernard]

Thanks for the report. This error is a mistery for me, since Exception#backtrace_locations is supposed to return an array. I need to understand why the original backtrace is a string.

Could you provide me the type of the original exception please ? Is it possible that the method backtrace_locations of the original exception has been overridden ?

[hrdwdmrbl]

I honestly wish I knew what the original exception was! I throw a lot of ActiveResource::ClientError and ActiveResource::ServerError, but that's just a statistic. I was also doing work on my local machine and was connected to my production DB and that connection is always flaky, so I get a lot of ActiveRecord connection errors. But those are just guesses.

I did try to get a breakpoint into your code to debug it but wasn't successful. I did see that that method sometimes returns nil also. Seems like a truly buggy method! :(

[alexisbernard]

I have added a fallback to the old way in this case and some logging. Can you try to reproduce with the following version in your Gemfile please ?

gem "rorvswild", git: "https://github.com/BaseSecrete/rorvswild.git", ref: "42b66153ad0db9d7ab849e073604cec660f4d191"

If the error happens again, something should be printed by the following command grep -A 20 'Exception#backtrace_locations' log/development.log.

[hrdwdmrbl]

Alright. I'm a bit apprehensive about running special versions of the code but for a little while I'll try it. I was able to reproduce the error twice in a row but then it stopped happening...

[alexisbernard]

Do you have more details about the origin exception where backtrace_locations returns a string ?

[hrdwdmrbl]

@alexisbernard I do not and I do not know if I ever will again. If and when I do, I will surely let you know