C:\Users\Shroom\Desktop\BuildCraft-6.1.x>gradlew setupDecompWorkspace

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Searge, ProfMobius, Fesh0r,
R4wk, ZeuX, IngisKahn
MCP Data version : unknown

:extractUserDev UP-TO-DATE
:getAssetsIndex
:getAssets
:copyAssets
:extractNatives UP-TO-DATE
:genSrgs SKIPPED
:downloadMcpTools UP-TO-DATE
:downloadClient SKIPPED
:downloadServer SKIPPED
:mergeJars SKIPPED
:deobfuscateJar SKIPPED
:decompile SKIPPED
:processSources SKIPPED
:remapJar SKIPPED
:extractMinecraftSrc SKIPPED
:recompMinecraft SKIPPED
:repackMinecraft SKIPPED
:setupDecompWorkspace

BUILD SUCCESSFUL

Total time: 15.154 secs
C:\Users\Shroom\Desktop\BuildCraft-6.1.x>gradlew build

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Searge, ProfMobius, Fesh0r,
R4wk, ZeuX, IngisKahn
MCP Data version : unknown

:compileApiJava UP-TO-DATE
:processApiResources UP-TO-DATE
:apiClasses UP-TO-DATE
:apiJar UP-TO-DATE
:sourceMainJava UP-TO-DATE
:compileJava UP-TO-DATE
:processResources UP-TO-DATE
:classes UP-TO-DATE
:deobfJar UP-TO-DATE
:jar
:javadoc UP-TO-DATE
:javadocJar UP-TO-DATE
:compileTestJava UP-TO-DATE
:processTestResources UP-TO-DATE
:testClasses UP-TO-DATE
:test UP-TO-DATE
:extractUserDev UP-TO-DATE
:genSrgs SKIPPED
:reobf
:sourceJar UP-TO-DATE
:assemble
:checkstyleApi UP-TO-DATE
:checkstyleMain
[ant:checkstyle] C:\Users\Shroom\Desktop\BuildCraft-6.1.x\common\buildcraft\Buil
dCraftSilicon.java:47: Wrong order for 'buildcraft.core.robots.boards.BoardRobot
CarrierNBT' import.
[ant:checkstyle] C:\Users\Shroom\Desktop\BuildCraft-6.1.x\common\buildcraft\core
\inventory\filters\PassThroughStackFilter.java:20:24: Unnecessary parentheses ar
ound return value.
:checkstyleMain FAILED

FAILURE: Build failed with an exception.

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

  Checkstyle rule violations were found. See the report at: file:///C:/Users/Shr
  oom/Desktop/BuildCraft-6.1.x/build/reports/checkstyle/main.xml

• 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: 22.838 secs

C:\Users\Shroom\Desktop\BuildCraft-6.1.x>^A

looks like there is a checkstyle error in the current state, open the gradle.build file and remove the checkstyle, that should enable it to build

ok hks