title: Tests pass at REPL, fail on command line with lein test
body: <p>If I run <code>lein test</code> from within my project's directory, I get odd errors like this:</p>
  
  <p><code>Exception in thread "main" java.lang.ClassNotFoundException: clojure.set</code></p>
  
  <p>I use <code>clojure.set</code> in one place in my app.</p>
  
  <p>If I try to run just a single test defined in <code>deftest</code> from the command line, then I get that it cannot find the test on the classpath.</p>
  
  <p>If I run <code>(run-tests)</code> from the REPL, everything passes.</p>
  
  <p>I'd like to be able to run from command line if possible. Can anyone advise what is the issue?</p>