There seems to be a problem with the reports plugin

2015-04-16 00:04:32,583 [pool-1-thread-22217] ERROR com.pmease.quickbuild.DefaultBuildEngine - Error processing build request.
    com.pmease.quickbuild.plugin.report.engine.exception.DatabaseException: Open database [/xxx/builds/432446/reports/jira/DEFAULT] failed. Database status [No active connections].
        at com.pmease.quickbuild.plugin.report.engine.datastore.DbStore.open(DbStore.java:355)
        at com.pmease.quickbuild.plugin.report.engine.metadata.ReportCategory.saveReport(ReportCategory.java:367)
        at com.pmease.quickbuild.plugin.report.engine.metadata.ReportCategory.saveReport(ReportCategory.java:379)
        at com.pmease.quickbuild.plugin.tracker.core.contribution.IssuesBuildListener.buildFinished(IssuesBuildListener.java:147)
        at com.pmease.quickbuild.DefaultBuildEngine.run(DefaultBuildEngine.java:654)
        at com.pmease.quickbuild.DefaultBuildEngine.process(DefaultBuildEngine.java:379)
        at com.pmease.quickbuild.DefaultBuildEngine.access$000(DefaultBuildEngine.java:130)
        at com.pmease.quickbuild.DefaultBuildEngine$2.run(DefaultBuildEngine.java:1081)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
        at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
        at java.util.concurrent.FutureTask.run(FutureTask.java:166)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:722)
    Caused by: com.pmease.quickbuild.plugin.report.engine.exception.DatabaseException: Unable to get connection from database url: jdbc:h2:/xxx/builds/432446/reports/jira/DEFAULT/jira
        at com.pmease.quickbuild.plugin.report.engine.datastore.ConnectionManager.getConnection(ConnectionManager.java:25)
        at com.pmease.quickbuild.plugin.report.engine.datastore.DbStore.getConnection(DbStore.java:384)
        at com.pmease.quickbuild.plugin.report.engine.datastore.DbStore.open(DbStore.java:308)
        ... 13 more
    Caused by: org.h2.jdbc.JdbcSQLException: Out of memory. [90108-175]
        at org.h2.message.DbException.getJdbcSQLException(DbException.java:332)
        at org.h2.message.DbException.get(DbException.java:161)
        at org.h2.message.DbException.convert(DbException.java:278)
        at org.h2.engine.Database.openDatabase(Database.java:274)
        at org.h2.engine.Database.<init>(Database.java:239)
        at org.h2.engine.Engine.openSession(Engine.java:58)
        at org.h2.engine.Engine.openSession(Engine.java:162)
        at org.h2.engine.Engine.createSessionAndValidate(Engine.java:141)
        at org.h2.engine.Engine.createSession(Engine.java:124)
        at org.h2.engine.Engine.createSession(Engine.java:30)
        at org.h2.engine.SessionRemote.connectEmbeddedOrServer(SessionRemote.java:323)
        at org.h2.jdbc.JdbcConnection.<init>(JdbcConnection.java:105)
        at org.h2.jdbc.JdbcConnection.<init>(JdbcConnection.java:90)
        at org.h2.Driver.connect(Driver.java:73)
        at java.sql.DriverManager.getConnection(DriverManager.java:579)
        at java.sql.DriverManager.getConnection(DriverManager.java:221)
        at com.pmease.quickbuild.plugin.report.engine.datastore.ConnectionManager.getConnection(ConnectionManager.java:23)
        ... 15 more
    Caused by: java.lang.OutOfMemoryError: unable to create new native thread
        at org.h2.engine.Database.openDatabase(Database.java:261)
        ... 28 more