From 7b8e0d3477a798297d44083e354ba244776080f9 Mon Sep 17 00:00:00 2001
From: Daigo 3 Dango <zunda@users.noreply.github.com>
Date: Mon, 27 Jan 2020 00:06:34 -1000
Subject: [PATCH] Explicitly install rack gem (#12972)

Pin rack version to 2.0.8. Rack-2.1.0 and 2.1.1 are known to record error below upon requests to `/sidekiq`:

```
NoMethodError - undefined method `transform_keys' for #<ActionDispatch::Request::Session:0x...>
```
---
 Gemfile      | 1 +
 Gemfile.lock | 3 ++-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/Gemfile b/Gemfile
index daab71588..e0a4fb0d7 100644
--- a/Gemfile
+++ b/Gemfile
@@ -9,6 +9,7 @@ gem 'puma', '~> 4.3'
 gem 'rails', '~> 5.2.4'
 gem 'sprockets', '~> 3.7.2'
 gem 'thor', '~> 0.20'
+gem 'rack', '2.0.8'
 
 gem 'thwait', '~> 0.1.0'
 gem 'e2mmap', '~> 0.1.0'
diff --git a/Gemfile.lock b/Gemfile.lock
index 50bb61d75..80eec4208 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -441,7 +441,7 @@ GEM
     pundit (2.1.0)
       activesupport (>= 3.0.0)
     raabro (1.1.6)
-    rack (2.1.1)
+    rack (2.0.8)
     rack-attack (6.2.2)
       rack (>= 1.0, < 3)
     rack-cors (1.1.1)
@@ -749,6 +749,7 @@ DEPENDENCIES
   pry-rails (~> 0.3)
   puma (~> 4.3)
   pundit (~> 2.1)
+  rack (= 2.0.8)
   rack-attack (~> 6.2)
   rack-cors (~> 1.1)
   rails (~> 5.2.4)