#ifndef BANDIT_DEFAULT_FAILURE_FORMATTER_H
#define BANDIT_DEFAULT_FAILURE_FORMATTER_H

namespace bandit { namespace detail {

  struct default_failure_formatter : public failure_formatter
  {
    std::string format(const assertion_exception& err) const
    {
      std::stringstream ss;
      if(err.file_name().size())
      {
        ss << err.file_name();

        if(err.line_number())
        {
          ss << ":" << err.line_number();
        }

        ss << ": ";
      }

      ss << std::endl << err.what();

      return ss.str();
    }
  };
}}

#endif

#ifndef BANDIT_DEFAULT_FAILURE_FORMATTER_H
#define BANDIT_DEFAULT_FAILURE_FORMATTER_H

namespace bandit { namespace detail {

  struct default_failure_formatter : public failure_formatter
  {
    std::string format(const assertion_exception& err) const
    {
      std::stringstream ss;
      if(err.file_name().size())
      {
        ss << err.file_name();

        if(err.line_number())
        {
          ss << ":" << err.line_number();
        }

        ss << ": ";
      }

      ss << err.what();

      return ss.str();
    }
  };
}}

#endif

--- 
+++ 
@@ -20,7 +20,7 @@
         ss << ": ";
       }
 
-      ss << err.what();
+      ss << std::endl << err.what();
 
       return ss.str();
     }
Add line break in default error formatter
