18:27:47: Executing external task 'setupDecompWorkspace'...
This set of MCP mappings was designed for MC 1.8.8. Use at your own peril.
#################################################
         ForgeGradle 2.1-SNAPSHOT-8267717
  https://github.com/MinecraftForge/ForgeGradle
#################################################
               Powered by MCP unknown
             http://modcoderpack.com
         by: Searge, ProfMobius, Fesh0r,
         R4wk, ZeuX, IngisKahn, bspkrs
#################################################
:deobfCompileDummyTask
:deobfProvidedDummyTask
:getVersionJson
:extractUserdev
Download http://files.minecraftforge.net/maven/net/minecraftforge/forge/1.8.9-11.15.1.1722/forge-1.8.9-11.15.1.1722.pom
Download http://files.minecraftforge.net/maven/net/minecraftforge/forge/1.8.9-11.15.1.1722/forge-1.8.9-11.15.1.1722-userdev.jar
:extractDependencyATs SKIPPED
:extractMcpData
Download http://files.minecraftforge.net/maven/de/oceanlabs/mcp/mcp/1.8.9/mcp-1.8.9-srg.zip
:extractMcpMappings SKIPPED
:genSrgs
:downloadClient
:downloadServer
:splitServerJar
:mergeJars
:deobfMcSRG
Applying SpecialSource...
Applying Exceptor...
:decompileMc
Download https://libraries.minecraft.net/com/mojang/realms/1.7.58/realms-1.7.58.pom
Download https://libraries.minecraft.net/com/mojang/realms/1.7.58/realms-1.7.58.jar
:decompileMc FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':decompileMc'.
> Java heap space

* 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 mins 46.078 secs
Java heap space