Started by an SCM change
[EnvInject] - Loading node environment variables.
Building in workspace /var/lib/jenkins/jobs/IC2_110/workspace
 > git rev-parse --is-inside-work-tree # timeout=10
Fetching changes from the remote Git repository
 > git config remote.origin.url /var/lib/gitolite/repositories/IC2.git # timeout=10
Fetching upstream changes from /var/lib/gitolite/repositories/IC2.git
 > git --version # timeout=10
 > git fetch --tags --progress /var/lib/gitolite/repositories/IC2.git +refs/heads/*:refs/remotes/origin/*
 > git rev-parse refs/remotes/origin/110^{commit} # timeout=10
 > git rev-parse refs/remotes/origin/refs/heads/110^{commit} # timeout=10
Checking out Revision 21d37465ad965c03bb21488daae3f23ebdd56e92 (refs/remotes/origin/110)
 > git config core.sparsecheckout # timeout=10
 > git checkout -f 21d37465ad965c03bb21488daae3f23ebdd56e92
Commit message: "Fix mining laser not firing when looking straight up or down (#2329)"
 > git rev-list --no-walk 54200eab3821fc3b0a6a775fcb2e6840a8e900ec # timeout=10
 > git tag -a -f -m Jenkins Build #257 jenkins-IC2_110-257 # timeout=10
[workspace] $ /bin/sh -xe /tmp/jenkins4116247564099733899.sh
+ /bin/bash -c BUILD_SUFFIX=ex110 ./gradlew clean setupCIWorkspace build uploadArchives
Version 2.6.257-ex110
This mapping 'snapshot_20160518' was designed for MC 1.9.4! 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           
#################################################
:clean
:extractMcpMappings SKIPPED
:deobfCompileDeobfDepTask0 SKIPPED
:deobfCompileRemapDepSourcesTask1 SKIPPED
:deobfCompileDummyTask
:getVersionJson
:extractUserdev UP-TO-DATE
:downloadClient SKIPPED
:downloadServer SKIPPED
:splitServerJar SKIPPED
:mergeJars SKIPPED
:applyBinaryPatches SKIPPED
:deobfProvidedDummyTask
:extractDependencyATs SKIPPED
:extractMcpData SKIPPED
:genSrgs SKIPPED
:deobfMcMCP SKIPPED
:setupCiWorkspace
:sourceApiJava
:compileApiJava UP-TO-DATE
:processApiResources UP-TO-DATE
:apiClasses UP-TO-DATE
:sourceMainJava
:compileJavawarning: [options] bootstrap class path not set in conjunction with -source 1.6
/var/lib/jenkins/jobs/IC2_110/workspace/build/sources/main/java/ic2/core/block/TileEntityInventory.java:193: error: cannot find symbol
		if (stack.isEmpty()) {
		         ^
  symbol:   method isEmpty()
  location: variable stack of type ItemStack
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
1 error
1 warning
 FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':compileJava'.
> 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: 34.03 secs
Build step 'Execute shell' marked build as failure
Archiving artifacts
Finished: FAILURE