set as binary before gsub

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52387 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 2 insertions, 2 deletions

diff --git a/test/lib/envutil.rb b/test/lib/envutil.rb
index 723bfdda06..4faeabb995 100644
--- a/test/lib/envutil.rb
+++ b/test/lib/envutil.rb
@@ -330,11 +330,11 @@ module Test
           full_message << "pid #{pid}"
           full_message << " killed by #{sigdesc}" if sigdesc
           if out and !out.empty?
-            full_message << "\n#{out.gsub(/^/, '| ')}"
+            full_message << "\n#{out.b.gsub(/^/, '| ')}"
             full_message << "\n" if /\n\z/ !~ full_message
           end
           if log
-            full_message << "\n#{log.gsub(/^/, '| ')}"
+            full_message << "\n#{log.b.gsub(/^/, '| ')}"
           end
           full_message
         end