2.1.1だけではなく2.1.0でもエラーが起きる
$ git diff Gemfile.lock
diff --git a/Gemfile.lock b/Gemfile.lock
index 26bc5b16a..0b171d0e9 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -438,7 +438,7 @@ GEM
pundit (2.1.0)
activesupport (>= 3.0.0)
raabro (1.1.6)
- rack (2.1.1)
+ rack (2.1.0)
rack-attack (6.2.2)
rack (>= 1.0, < 3)
rack-cors (1.1.1)
1行パッチでなおるわね
$ diff --git a/Gemfile.lock b/Gemfile.lock
index 26bc5b16a..0c5cdf7fd 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -438,7 +438,7 @@ 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)