Tutorial fails on Micronaut 2.1.0 with Java 8

[ellipticview]

Environment:
Windows 10
Micronaut Version: 2.1.0
java version "1.8.0_261"
Java(TM) SE Runtime Environment (build 1.8.0_261-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.261-b12, mixed mode)

Followed the instructions, step 2, 3, 4. (did not download or clone from github).

Step 5: > Task :test FAILED. test results age shows:

org.gradle.api.internal.tasks.testing.TestSuiteExecutionException: Could not execute test class 'example.micronaut.CompleteSpec'.
Caused by: java.lang.UnsupportedClassVersionError: example/micronaut/CompleteSpec has been compiled by a more recent version of the Java Runtime (class file version 55.0), this version of the Java Runtime only recognizes class file versions up to 52.0
	at java.lang.ClassLoader.defineClass1(Native Method)

Step 6:

> Task :run FAILED
Error: A JNI error has occurred, please check your installation and try again
Exception in thread "main" java.lang.UnsupportedClassVersionError: example/micronaut/Application has been compiled by a more recent version of the Java Runtime (class file version 55.0), this version of the Java Runtime only recognizes class file versions up to 52.0
        at java.lang.ClassLoader.defineClass1(Native Method)

Interestingly: If I download the zip, cd into folder complete and then run "gradlew test" this does not produce the error above. The test completes without errors.

gradlew run lists errors (see below) but does start up. The browser however displays a json message "Page not found"

> Task :run
08:07:03,531 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Could NOT find resource [logback-test.xml]
08:07:03,532 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Could NOT find resource [logback.groovy]
08:07:03,532 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Found resource [logback.xml] at [file:/C:/_1_Projects/Micronaut/creating-your-first-micronaut-app-groovy-master/complete/build/resources/main/logback.xml]
08:07:03,594 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - debug attribute not set
08:07:03,596 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - About to instantiate appender of type [ch.qos.logback.core.ConsoleAppender]
08:07:03,604 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - Naming appender as [STDOUT]
08:07:03,611 |-INFO in ch.qos.logback.core.joran.action.NestedComplexPropertyIA - Assuming default type [ch.qos.logback.classic.encoder.PatternLayoutEncoder] for [encoder] property
08:07:03,656 |-INFO in ch.qos.logback.core.ConsoleAppender[STDOUT] - Enabling JANSI WindowsAnsiOutputStream for the console.
08:07:03,657 |-WARN in ch.qos.logback.core.ConsoleAppender[STDOUT] - Failed to create WindowsAnsiOutputStream. Falling back on the default stream. ch.qos.logback.core.util.DynamicClassLoadingException: Failed to instantiate type org.fusesource.jansi.WindowsAnsiOutputStream
        at ch.qos.logback.core.util.DynamicClassLoadingException: Failed to instantiate type org.fusesource.jansi.WindowsAnsiOutputStream
        at      at ch.qos.logback.core.util.OptionHelper.instantiateByClassNameAndParameter(OptionHelper.java:69)
        at      at ch.qos.logback.core.util.OptionHelper.instantiateByClassNameAndParameter(OptionHelper.java:40)
        at      at ch.qos.logback.core.ConsoleAppender.getTargetStreamForWindows(ConsoleAppender.java:88)
        at      at ch.qos.logback.core.ConsoleAppender.start(ConsoleAppender.java:79)
        at      at ch.qos.logback.core.joran.action.AppenderAction.end(AppenderAction.java:90)
        at      at ch.qos.logback.core.joran.spi.Interpreter.callEndAction(Interpreter.java:309)
        at      at ch.qos.logback.core.joran.spi.Interpreter.endElement(Interpreter.java:193)
        at      at ch.qos.logback.core.joran.spi.Interpreter.endElement(Interpreter.java:179)
        at      at ch.qos.logback.core.joran.spi.EventPlayer.play(EventPlayer.java:62)
        at      at ch.qos.logback.core.joran.GenericConfigurator.doConfigure(GenericConfigurator.java:165)
        at      at ch.qos.logback.core.joran.GenericConfigurator.doConfigure(GenericConfigurator.java:152)
        at      at ch.qos.logback.core.joran.GenericConfigurator.doConfigure(GenericConfigurator.java:110)
        at      at ch.qos.logback.core.joran.GenericConfigurator.doConfigure(GenericConfigurator.java:53)
        at      at ch.qos.logback.classic.util.ContextInitializer.configureByResource(ContextInitializer.java:75)
        at      at ch.qos.logback.classic.util.ContextInitializer.autoConfig(ContextInitializer.java:150)
        at      at org.slf4j.impl.StaticLoggerBinder.init(StaticLoggerBinder.java:84)
        at      at org.slf4j.impl.StaticLoggerBinder.<clinit>(StaticLoggerBinder.java:55)
        at      at org.slf4j.LoggerFactory.bind(LoggerFactory.java:150)
        at      at org.slf4j.LoggerFactory.performInitialization(LoggerFactory.java:124)
        at      at org.slf4j.LoggerFactory.getILoggerFactory(LoggerFactory.java:412)
        at      at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:357)
        at      at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:383)
        at      at io.micronaut.runtime.Micronaut.<clinit>(Micronaut.java:44)
        at      at example.micronaut.Application.main(Application.groovy:9)
Caused by: java.lang.ClassNotFoundException: org.fusesource.jansi.WindowsAnsiOutputStream
        at      at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
        at      at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
        at      at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:355)
        at      at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
        at      at ch.qos.logback.core.util.OptionHelper.instantiateByClassNameAndParameter(OptionHelper.java:56)
        at      ... 23 common frames omitted
08:07:03,657 |-INFO in ch.qos.logback.classic.joran.action.RootLoggerAction - Setting level of ROOT logger to INFO
08:07:03,657 |-INFO in ch.qos.logback.core.joran.action.AppenderRefAction - Attaching appender named [STDOUT] to Logger[ROOT]
08:07:03,658 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - End of configuration.
08:07:03,659 |-INFO in ch.qos.logback.classic.joran.JoranConfigurator@8bd1b6a - Registering current configuration as safe fallback point

08:07:06.118 [main] INFO  io.micronaut.runtime.Micronaut - Startup completed in 2454ms. Server Running: http://localhost:8080
<==========---> 80% EXECUTING [6m 3s]
> :run