Build Fail

[DabFace]

This mapping 'snapshot_20161220' was designed for MC 1.11! Use at your own peril.
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ForgeGradle 2.2-SNAPSHOT-d13a6c8
https://github.com/MinecraftForge/ForgeGradle
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Powered by MCP unknown
http://modcoderpack.com
by: Searge, ProfMobius, Fesh0r,
R4wk, ZeuX, IngisKahn, bspkrs
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:deobfCompileDummyTask
:getVersionJson
:extractUserdev UP-TO-DATE
:downloadClient SKIPPED
:downloadServer SKIPPED
:splitServerJar SKIPPED
:mergeJars SKIPPED
:applyBinaryPatches SKIPPED
:deobfProvidedDummyTask
:extractDependencyATs SKIPPED
:extractMcpData SKIPPED
:extractMcpMappings SKIPPED
:genSrgs SKIPPED
:deobfMcMCP SKIPPED
:sourceApiJava UP-TO-DATE
:compileApiJava UP-TO-DATE
:processApiResources UP-TO-DATE
:apiClasses UP-TO-DATE
:sourceMainJava UP-TO-DATE
:compileJava FAILED

FAILURE: Build failed with an exception.

• What went wrong:
  Execution failed for task ':compileJava'.

Could not find tools.jar

• 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: 14.784 secs

help 👍 me

[utkabobr]

You're using old build.gradle, download latest from the repo

[DabFace]

how? i am a noob in this :P

[utkabobr]

@DabFace just download a new zip from the master branch and replace your build.gradle with build.gradle from archive