Ugh, this error is so annoying!

Man, every time. EVERY TIME, I deal with the same problem. Here's the error log:

  
Executing gradle command: cleanCache clean setupDecompWorkspace --refresh-dependencies
Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation.  All rights reserved.
C:\Pylo\MCreator175>cd forge
C:\Pylo\MCreator175\forge>SET "JAVA_HOME=C:\Pylo\MCreator175\jdk32\"
C:\Pylo\MCreator175\forge>SET JAVA_EXE=%JAVA_HOME%\bin\java.exe
C:\Pylo\MCreator175\forge>SET PATH=%JAVA_HOME%\bin\;%PATH%
C:\Pylo\MCreator175\forge>gradlew -Dorg.gradle.jvmargs="-Xms512m -Xmx1024m" cleanCache clean setupDecompWorkspace --refresh-dependencies
This mapping 'snapshot_20161220' was designed for MC 1.11! Use at your own peril.
#################################################
         ForgeGradle 2.2-SNAPSHOT-d13a6c8       
  https://github.com/MinecraftForge/ForgeGradle 
#################################################
               Powered by MCP unknown              
             http://modcoderpack.com            
         by: Searge, ProfMobius, Fesh0r,        
         R4wk, ZeuX, IngisKahn, bspkrs          
#################################################
:cleanCache FAILED
FAILURE: Build failed with an exception.
BUILD FAILED
* WhatExecution failed for task ':cleanCache'.
 went wrong:
> Unable to delete file: C:\Users\Loney\.gradle\caches\minecraft\net\minecraft\minecraft_server\1.11.2\minecraft_server-1.11.2.jar
Total time: 24.901 secs
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
C:\Pylo\MCreator175\forge>
Task completed with return code 0 in 25561 millisecond