tests fail on Scala version that will soon become 2.13.0-M3

[SethTisue]

in recent 2.13 community build runs such as https://scala-ci.typesafe.com/view/scala-2.13.x/job/scala-2.13.x-integrate-community-build/919/consoleFull we see:

----------------------------------- Failures -----------------------------------
X test.utest.examples.TestPathTests.'testPath.'foo 10ms 
  utest.AssertionError: assert(implicitly[utest.framework.TestPath].value == Seq("testPath", "foo"))
    utest.asserts.Asserts$.assertImpl(Asserts.scala:114)
    test.utest.examples.TestPathTests$.$anonfun$tests$3(TestPathTests.scala:9)
X test.utest.FrameworkTests.'catchCastError 0ms 
  utest.NoSuchTestException: [ah]
    utest.TestRunner$.runAsync(TestRunner.scala:60)
    utest.TestRunner$.run(TestRunner.scala:124)
    test.utest.FrameworkTests$.$anonfun$tests$79(FrameworkTests.scala:232)
X test.utest.FrameworkTests.'testSelection 0ms 
  utest.NoSuchTestException: [A]
    utest.TestRunner$.runAsync(TestRunner.scala:60)
    utest.TestRunner$.run(TestRunner.scala:124)
    test.utest.FrameworkTests$.$anonfun$tests$84(FrameworkTests.scala:249)
X test.utest.FrameworkTests.'testPath.'foo 1ms 
  utest.AssertionError: assert(implicitly[utest.framework.TestPath] == TestPath(Seq("testPath", "foo
  ")))
    utest.asserts.Asserts$.assertImpl(Asserts.scala:114)
    test.utest.FrameworkTests$.$anonfun$tests$107(FrameworkTests.scala:294)

the problem is reproducible outside of dbuild at https://github.com/scalacommunitybuild/utest/tree/community-build-2.13 with ++2.13.0-pre-79e5101

(perhaps related, perhaps not: the eta-expansions I had to add in scalacommunitybuild/utest@99e30c5 seem suspicious to me; I'll talk to the team about whether this is intentional or not) (never mind, it's correct, nullary eta expansion was deprecated in 2.12.0 and is an error in 2.13)

[SethTisue]

2.13.0-M3 has been published

[SethTisue]

it's green again in recent 2.13 community build runs