Downgrade Gemfile.lock

Gemfile.lock

@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    ssh_scan (0.0.43)
+    ssh_scan (0.0.44)
       bcrypt_pbkdf (= 1.0.1)
       bindata (= 2.4.3)
       ed25519 (= 1.2.4)
@@ -23,7 +23,7 @@ GEM
       thor (>= 0.19.4, < 2.0)
       tins (~> 1.6)
     diff-lcs (1.4.4)
-    docile (1.4.0)
+    docile (1.3.5)
     ed25519 (1.2.4)
     json (2.5.1)
     method_source (0.9.2)
@@ -55,17 +55,17 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.7.0)
     rspec-support (3.7.1)
-    rubocop (1.15.0)
+    rubocop (1.12.1)
       parallel (~> 1.10)
       parser (>= 3.0.0.0)
       rainbow (>= 2.2.2, < 4.0)
       regexp_parser (>= 1.8, < 3.0)
       rexml
-      rubocop-ast (>= 1.5.0, < 2.0)
+      rubocop-ast (>= 1.2.0, < 2.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 1.4.0, < 3.0)
-    rubocop-ast (1.5.0)
-      parser (>= 3.0.1.1)
+    rubocop-ast (1.4.1)
+      parser (>= 2.7.1.5)
     ruby-progressbar (1.11.0)
     simplecov (0.16.1)
       docile (~> 1.1)