Doesn't work with threaded maven

[blast-hardcheese]

mvn -T 1C reportedly results in the following traceback, with the overall failure: java.lang.AssertionError : I am not a chatild of my parent

[ERROR] Failed to generate client
com.twilio.guardrail.CodegenFailedException
    at com.twilio.guardrail.AbstractGuardrailCodegenMojo.$anonfun$guardrailTask$4 (AbstractGuardrailCodegenMojo.scala:181)
    at com.twilio.guardrail.TargetError.fold (Target.scala:108)
    at com.twilio.guardrail.AbstractGuardrailCodegenMojo.guardrailTask (AbstractGuardrailCodegenMojo.scala:194)
    at com.twilio.guardrail.AbstractGuardrailCodegenMojo.execute (AbstractGuardrailCodegenMojo.scala:141)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:137)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:210)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:156)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:148)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
    at org.apache.maven.lifecycle.internal.builder.multithreaded.MultiThreadedBuilder$1.call (MultiThreadedBuilder.java:190)
    at org.apache.maven.lifecycle.internal.builder.multithreaded.MultiThreadedBuilder$1.call (MultiThreadedBuilder.java:186)
    at java.util.concurrent.FutureTask.run (FutureTask.java:264)
    at java.util.concurrent.Executors$RunnableAdapter.call (Executors.java:515)
    at[ a1mERROR] Erva.ror: Eutil.crrooncr attemptingurrent.FutureTa tosk. proruncess /Users/kpavlov/work (it[1mFutureT/mask.javessa:2aging/a64-service/core-modules/a2p-integratm)i
 on-impl/src/  main/resources/number-pool-service.oas3.yml:
java.lang.AssertionError : I am not a chatild of my parent.
        at com.tilio.guardrail.SwaggerUtil$.$anonfun$typeName$15(Swag[mger jUtil.scalaava.util.concurrent.Thr:296)
        at com.twilio.guardrail.Target$$anon$1.flatMap(Target.scala:37)
  ead      at com.twiliPoolExeco.utor.runWorkerguardrail.Targe (ThreadPoolExecutor.java:1130)t$$anon$1.flatMap(Target.scala:27)
          ...
        at com.twilio.guardrail.SwaggerUtil$.$anonfun$typeName$3(SwaggerUtil.scala:269)
        at com.twilio.guardrail.Target$$anon$1.flatMap(Target.scala:37)
        at
     com.twilio.guardrail.Target$$anon$1.flatMap(Target.scala:27)
          ...
        at com.twilio.guardrail.SwaggerUtil$.typeName(SwaggerUtil.scala:268)
        at com.twilio.guardrail.ProtocolGeneraator$.$anonfun$fromEnum$18(Proto[mco java.util.concurrent.ThreadPoolExeculGenerator.scala:149)
  tor$Worker.run      at com.twilio.guardra (ThreadPoolExecutor.java:630)
il.Target$$anon$1.flatMap(Target.    scala:37)
        at com.twilio.gurdr[1matail.Targ jet$$anoavan$1.flatMap.la(Target.scala:27)ng.Thread.run
          ...
     (   Thr ead.java:832)at com.twilio.guardrail.ProtocolG
enerator$.$anonfun$fromEnum$17(ProtocolGenerator.scala:148)
        at com.twilio.guardrail.Target$$anon$1.flatMap(Target.scala:37)
        at com.twilio.guardrail.Target$$anon$1.flatMap(Target.scala:27)
          ...
        at com.twilio.guardrail.ProtocolGenerator$.fromEnum(ProtocolGenerator.scala:147)
        at com.twilio.guardrail.ProtocolGenerator$.$anonfun$fromSwagger$20(ProtocolGenerator.scala:726)
        at com.twilio.guardrail.core.HighPriorityTrackerSyntax$RefineEitherSyntax.$anonfun$orRefine$2(Tracker.scala:115)
          ...
        at com.twilio.guardrail.core.HighPriorityTrackerSyntax$RefineEitherSyntax.$anonfun$orRefine$1(Tracker.scala:117)
          ...
        at com.twilio.guardrail.core.HighPriorityTrackerSyntax$RefineEitherSyntax.orRefine(Tracker.scala:118)
        at com.twilio.guardrail.ProtocolGenerator$.$anonfun$fromSwagger$7(ProtocolGenerator.scala:724)
          ...
        at com.twilio.guardrail.ProtocolGenerator$.$anonfun$fromSwagger$6(ProtocolGenerator.scala:685)
        at com.twilio.guardrail.Target$$anon$1.flatMap(Target.scala:37)
        at com.twilio.guardrail.Target$$anon$1.flatMap(Target.scala:27)
          ...
        at com.twilio.guardrail.ProtocolGenerator$.$anonfun$fromSwagger$4(ProtocolGenerator.scala:684)
        at com.twilio.guardrail.Target$$anon$1.flatMap(Target.scala:37)
        at com.twilio.guardrail.Target$$anon$1.flatMap(Target.scala:27)
          ...
        at com.twilio.guardrail.ProtocolGenerator$.$anonfun$fromSwagger$3(ProtocolGenerator.scala:683)
        at com.twilio.guardrail.Target$$anon$1.flatMap(Target.scala:37)
        at com.twilio.guardrail.Target$$anon$1.flatMap(Target.scala:27)
          ...
        at com.twilio.guardrail.ProtocolGenerator$.fromSwagger(ProtocolGenerator.scala:681)
        at com.twilio.guardrail.Common$.prepareDefinitions(Common.scala:48)
        at com.twilio.guardrail.core.CoreTermInterp.$anonfun$processArgSet$18(CoreTermInterp.scala:217)
        at com.twilio.guardrail.Target$$anon$1.flatMap(Target.scala:37)
        at com.twilio.guardrail.Target$$anon$1.flatMap(Target.scala:27)
          ...
        at com.twilio.guardrail.core.CoreTermInterp.$anonfun$processArgSet$17(CoreTermInterp.scala:215)
        at com.twilio.guardrail.Target$$anon$1.flatMap(Target.scala:37)
        at com.twilio.guardrail.Target$$anon$1.flatMap(Target.scala:27)
          ...
        at com.twilio.guardrail.core.CoreTermInterp.$anonfun$processArgSet$16(CoreTermInterp.scala:214)
        at com.twilio.guardrail.ReadSwagger$.$anonfun$readSwagger$2(ReadSwagger.scala:23)
        at com.twilio.guardrail.Target$$anon$1.flatMap(Target.scala:37)
        at com.twilio.guardrail.Target$$anon$1.flatMap(Target.scala:27)
          ...
        at com.twilio.guardrail.ReadSwagger$.readSwagger(ReadSwagger.scala:23)
        at com.twilio.guardrail.CLICommon.$anonfun$guardrailRunner$3(CLI.scala:171)
          ...
        at com.twilio.guardrail.CLICommon.$anonfun$guardrailRunner$2(CLI.scala:168)
        at com.twilio.guardrail.Target$$anon$1.flatMap(Target.scala:37)
        at com.twilio.guardrail.Target$$anon$1.flatMap(Target.scala:27)
          ...
        at com.twilio.guardrail.CLICommon.$anonfun$guardrailRunner$1(CLI.scala:168)
        at com.twilio.guardrail.AbstractGuardrailCodegenMojo.guardrailTask(AbstractGuardrailCodegenMojo.scala:158)
        at com.twilio.guardrail.AbstractGuardrailCodegenMojo.execute(AbstractGuardrailCodegenMojo.scala:141)
          ...