So I'm finally getting around to updating for 1.8, and I'm getting a strange error I don't know how to fix. Anytime I edit the file it lists

extractMinecraftSrc

just overwrites it

 

I tried using both the current recommended build and the latest (build 1412), and tried using

gradlew clean cleanCache

beforehand.

 

****************************
Powered By MCP:             
http://mcp.ocean-labs.de/   
Searge, ProfMobius, Fesh0r, 
R4wk, ZeuX, IngisKahn, bspkrs
MCP Data version : snapshot_20141130
****************************
:extractMcpData

...

:recompMinecraftC:\Users\Chase\Downloads\forge-1.8-11.14.1.1412-src\build\tmp\recompSrc\net\minecraftforge\fml\common\ObfuscationReflectionHelper.java:36: type parameters of <T>T cannot be determined; no unique maximal instance exists for type variable T with upper bounds T,java.lang.Object
            return ReflectionHelper.getPrivateValue(classToAccess, instance, fieldIndex);
                                                   ^
C:\Users\Chase\Downloads\forge-1.8-11.14.1.1412-src\build\tmp\recompSrc\net\minecraftforge\fml\common\ObfuscationReflectionHelper.java:61: type parameters of <T>T cannot be determined; no unique maximal instance exists for type variable T with upper bounds T,java.lang.Object
            return ReflectionHelper.getPrivateValue(classToAccess, instance, remapFieldNames(classToAccess.getName(),fieldNames));
                                                   ^
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Note: Some input files use unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
2 errors
FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':recompMinecraft'.
> 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: 9 mins 16.213 secs

 

GitHub says those lines were last modified on Jul 22, 2012, and I know I've done this since then... So I'm clueless as to how to fix this. Any ideas?

It's worked fine for me before as well, but even a copy of what I use for 1.7 isn't working anymore.

 

I'm using 1.7.0_03.