[JIRA] (JENKINS-42709) Unable to build Jenkins with Java 8 set as target version

[msz...@wp.pl (JIRA)]

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Marcin Zajączkowski created an issue   Jenkins / JENKINS-42709 Unable to build Jenkins with Java 8 set as target version Issue Type: Bug Assignee: Unassigned Components: core Created: 2017/Mar/13 9:39 AM Environment: Jenkins 2.49, master as of 2017-03-12 Priority: Minor Reporter: Marcin Zajączkowski Playing with some Java 8 related improvements in Jenkins I've noticed that Jenkins cannot be built with Java 8 set as desired source/target level and it looks somehow tricky. [INFO] --- maven-compiler-plugin:3.0:compile (default-compile) @ jenkins-core --- [INFO] Changes detected - recompiling the module! [INFO] Compiling 1048 source files to /home/foo/Code/jenkins/core/target/classes [INFO] ------------------------------------------------------------- [ERROR] COMPILATION ERROR : [INFO] ------------------------------------------------------------- [ERROR] /home/foo/Code/jenkins/core/src/main/java/hudson/model/User.java:[658,22] error: method fromJobs in class RunList<R#2> cannot be applied to given types; [ERROR]   required: Iterable<? extends J#1>   found: Iterable<Job>   reason: inferred type does not conform to lower bound(s)     inferred: J#2     lower bound(s): T,Job   where J#1,R#1,R#2,J#2,R#3,T are type-variables:     J#1 extends Job<J#1,R#1> declared in method <J#1,R#1>fromJobs(Iterable<? extends J#1>)     R#1 extends Run<J#1,R#1> declared in method <J#1,R#1>fromJobs(Iterable<? extends J#1>)     R#2 extends Run declared in class RunList     J#2 extends Job<J#2,R#3>     R#3 extends Run<J#2,R#3>     T extends J#2 /home/foo/Code/jenkins/core/src/main/java/hudson/model/Computer.java:[781,22] error: method fromJobs in class RunList<R#2> cannot be applied to given types; [INFO] 2 errors [INFO] ------------------------------------------------------------- [INFO] ------------------------------------------------------------------------ [INFO] Reactor Summary: [INFO] [INFO] Jenkins main module ................................ SUCCESS [  2.169 s] [INFO] Jenkins cli ........................................ SUCCESS [  3.655 s] [INFO] Jenkins core ....................................... FAILURE [ 35.684 s] [INFO] Jenkins war ........................................ SKIPPED [INFO] Tests for Jenkins core ............................. SKIPPED [INFO] ------------------------------------------------------------------------ [INFO] BUILD FAILURE   As migration to Java 8 is getting closer and closer it would be good to have it solved. Add Comment   This message was sent by Atlassian JIRA (v7.3.0#73011-sha1:3c73d0e) -- You received this message because you are subscribed to the Google Groups "Jenkins Issues" group. To unsubscribe from this group and stop receiving emails from it, send an email to jenkinsci-issues+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.