Tests pass on one agent and don't pass on another

Hello,

I have 2 agents connected to my TeamCity server, and on one agent all the tests pass without a problem. On the other, tests fail with strange error:
java.lang.IllegalStateException: No TestRunnerAdaptor found, @BeforeSuite has not been called
    at org.jboss.arquillian.testng.Arquillian.verifyTestRunnerAdaptorHasBeenSet(Arquillian.java:246)
    at org.jboss.arquillian.testng.Arquillian.arquillianBeforeClass(Arquillian.java:101)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:74)
    at org.testng.internal.Invoker.invokeConfigurationMethod(Invoker.java:525)
    at org.testng.internal.Invoker.invokeConfigurations(Invoker.java:202)
    at org.testng.internal.Invoker.invokeConfigurations(Invoker.java:130)
    at org.testng.internal.TestMethodWorker.invokeBeforeClassMethods(TestMethodWorker.java:173)
    at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:105)
    at org.testng.TestRunner.runWorkers(TestRunner.java:1147)
    at org.testng.TestRunner.privateRun(TestRunner.java:749)
    at org.testng.TestRunner.run(TestRunner.java:600)
    at org.testng.SuiteRunner.runTest(SuiteRunner.java:317)
    at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:312)
    at org.testng.SuiteRunner.privateRun(SuiteRunner.java:274)
    at org.testng.SuiteRunner.run(SuiteRunner.java:223)
    at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
    at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86)
    at org.testng.TestNG.runSuitesSequentially(TestNG.java:1039)
    at org.testng.TestNG.runSuitesLocally(TestNG.java:964)
    at org.testng.TestNG.run(TestNG.java:900)
    at org.apache.maven.surefire.testng.TestNGExecutor.run(TestNGExecutor.java:77)
    at org.apache.maven.surefire.testng.TestNGDirectoryTestSuite.executeMulti(TestNGDirectoryTestSuite.java:189)
    at org.apache.maven.surefire.testng.TestNGDirectoryTestSuite.execute(TestNGDirectoryTestSuite.java:105)
    at org.apache.maven.surefire.testng.TestNGProvider.invoke(TestNGProvider.java:117)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray2(ReflectionUtils.java:208)
    at org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:159)
    at org.apache.maven.surefire.booter.ProviderFactory.invokeProvider(ProviderFactory.java:87)
    at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:153)
    at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:95)

Both agents run on ubuntu machines and use the same java. I even tried to run the build by hand on the agent where it fails, and run by hand it passes.

The only difference between agents I've found is that on one of them (the faulty one) there are environment variables set like:

I removed environment variables from buildAgent/conf/buildAgent.properties and restarted the agent, but I still can see them in TeamCity->Agents->Agent->Agent Parameters->Environment Variables

And there is different system property "file.encoding" on the agents. Where do you set this?