> gradlew build
****************************
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 R4wk, ZeuX, IngisKahn, bspkrs
 MCP Data version : unknown
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:compileApiJava UP-TO-DATE
:processApiResources UP-TO-DATE
:apiClasses UP-TO-DATE
:sourceMainJava UP-TO-DATE
:compileJava
warning: [options] bootstrap class path not set in conjunction with -source 1.6
G:\1\Work\MA\skyminecore\build\sources\java\skymine\redenergy\core\config\ConfigLoader.java:36: error: lambda expressions are not supported in -source 1.6
                fields.forEach(f -> {
                                 ^
  (use -source 8 or higher to enable lambda expressions)
1 error
1 warning
:compileJava FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':compileJava'.
> Compilation failed; see the compiler error output for details.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

BUILD FAILED

Total time: 7.361 secs