Ran Static analysis on my project and saw some collateral information that I thought I'd pass on.
I realize this is older code but probably still applies.

• OHHTTPStubs/OHHTTPStubs/Sources/OHHTTPStubs.m:46:1: Property of mutable type 'NSMutableArray' has 'copy' attribute; an immutable object will be stored instead

Memory error Group

• OHHTTPStubs/OHHTTPStubs/Sources/Mocktail/OHHTTPStubs+Mocktail.m:44:9: nil returned from a method that is expected to return a non-null value

• OHHTTPStubs/OHHTTPStubs/Sources/Mocktail/OHHTTPStubs+Mocktail.m:103:9: nil returned from a method that is expected to return a non-null value

• OHHTTPStubs/OHHTTPStubs/Sources/OHHTTPStubsResponse.m:153:12: nil passed to a callee that requires a non-null 1st parameter

New Issue Checklist

• [NO ] I have tried with the latest version of OHHTTPStubs
• [YES ] I have read the README
• [ N/A] I have read the Using the right Swift Version of OHHTTPStubs for your project section
• [NO ] I have searched in the existing issues
• [ N/A] I have read the OHHTTPStubs wiki to see if there wasn't a detailed page talking about my issue

Environment

• version of OHHTTPStubs: [LIB VERSION HERE]
• integration method you are using:
  • Cocoapods
  • Carthage
  • submodule
  • [X ] other (*Built into our Project from sources)
• version of the tool you use: [5.1.0]

There is no ill issue seen with OHTTPStubs. This is just FYI in case you wish to investigate.
I realize this is an older version. I can't update and try again.