Revert "update simplecov"

This reverts commit 01ca86de8b02ef7db222eb5db2598762ba9a516b.

Gemfile.lock

@@ -2,7 +2,7 @@ GEM
   remote: https://rubygems.org/
   specs:
     diff-lcs (1.3)
-    docile (1.3.2)
+    docile (1.1.5)
     json (2.3.0)
     rake (13.0.1)
     rdoc (6.2.1)
@@ -20,10 +20,11 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.9.0)
     rspec-support (3.9.2)
-    simplecov (0.18.5)
-      docile (~> 1.1)
-      simplecov-html (~> 0.11)
-    simplecov-html (0.12.2)
+    simplecov (0.15.0)
+      docile (~> 1.1.0)
+      json (>= 1.8, < 3)
+      simplecov-html (~> 0.10.0)
+    simplecov-html (0.10.2)
     syntax (1.2.2)
     yard (0.9.24)
 

spec/build_tests_spec.rb

@@ -133,7 +133,6 @@ SimpleCov.start do
     !(src.filename[SimpleCov.root])
   end
   formatter(MyFormatter)
-  SimpleCov.print_error_status = false
 end
 # force color off
 ENV["TERM"] = nil