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	Wed,  6 Mar 2019 02:48:52 +0000 (UTC)
Date: Wed, 6 Mar 2019 02:48:52 +0000
From: Eric Wong <e@80x24.org>
To: Stan Pitucha <stan.pitucha@envato.com>
Cc: unicorn-public@bogomips.org, Jeremy Evans <code@jeremyevans.net>
Subject: Re: Issues after 5.5.0 upgrade
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Stan Pitucha <stan.pitucha@envato.com> wrote:
> Hi, I'm running into two issues after an upgrade from 5.4.1 (a few

I only saw one issue (proposed fix below).
Did you forget to write about the other?

> previous versions worked just fine as well). I've got a rails 5.2 app
> started via:
> 
> bin/unicorn_rails -E development -c config/unicorn.rb
 
> With the minimal config.ru in place (require environment, run app), I get:
> 
> I, [2019-03-06T12:28:44.393406 #43714]  INFO -- : Refreshing Gem list
> ArgumentError: wrong number of arguments (given 0, expected 2)

It looks like the breakage was introduced in
commit 5985dd50a9bd72388dd5ca4886d6dffc083f87d4
("Support default_middleware configuration option")

Does this trivial change to unicorn_rails fix it for you?

diff --git a/bin/unicorn_rails b/bin/unicorn_rails
index ea4f822..558dd0b 100755
--- a/bin/unicorn_rails
+++ b/bin/unicorn_rails
@@ -136,7 +136,7 @@ def rails_builder(ru, op, daemonize)
     # Rails 3 includes a config.ru, use it if we find it after
     # working_directory is bound.
     ::File.exist?('config.ru') and
-      return Unicorn.builder('config.ru', op).call
+      return Unicorn.builder('config.ru', op)
 
     # Load Rails and (possibly) the private version of Rack it bundles.
     begin

If it's local, you can just edit
/Users/viraptor/.rbenv/versions/2.5.3/lib/ruby/gems/2.5.0/gems/unicorn-5.5.0/bin/unicorn_rails
No need to bother with building a gem.


Fwiw, "unicorn_rails" was only intended for Rails 1.x and 2.x.
Rails >= 3.x can use "unicorn" directly.  But "unicorn_rails"
still needs to be fixed on our end because I can't tolerate
breaking changes to existing deployment scripts.