• request creation of a new job, Maven-style
• in the Build Triggers section, check Poll SCM
• put * * * * * in the Schedule section
• press Save
  Result appears just below the Schedule text area.

<<
Status Code: 500
Exception:
Stacktrace:

java.lang.ArrayIndexOutOfBoundsException: 4
at hudson.scheduler.CronTab.checkSanity(CronTab.java:105)
at hudson.scheduler.CronTabList.checkSanity(CronTabList.java:40)
at hudson.triggers.TimerTrigger$DescriptorImpl$1.check(TimerTrigger.java:62)
at hudson.util.FormFieldValidator.process(FormFieldValidator.java:55)
at hudson.triggers.TimerTrigger$DescriptorImpl.doCheck(TimerTrigger.java:59)
at sun.reflect.GeneratedMethodAccessor162.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.kohsuke.stapler.Function$InstanceFunction.invoke(Function.java:103)
at org.kohsuke.stapler.Function.bindAndinvoke(Function.java:57)
at org.kohsuke.stapler.MetaClass$1.doDispatch(MetaClass.java:69)
at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:30)
at org.kohsuke.stapler.Stapler.invoke(Stapler.java:365)
at org.kohsuke.stapler.MetaClass$9.doDispatch(MetaClass.java:248)
at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:30)
at org.kohsuke.stapler.Stapler.invoke(Stapler.java:365)
at org.kohsuke.stapler.Stapler.invoke(Stapler.java:301)
at org.kohsuke.stapler.Stapler.service(Stapler.java:98)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:45)
at winstone.ServletConfiguration.execute(ServletConfiguration.java:249)
at winstone.RequestDispatcher.forward(RequestDispatcher.java:335)
at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:378)
at hudson.security.HudsonFilter.doFilter(HudsonFilter.java:88)
at winstone.FilterConfiguration.execute(FilterConfiguration.java:195)
at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:368)
at winstone.RequestDispatcher.forward(RequestDispatcher.java:333)
at winstone.RequestHandlerThread.processRequest(RequestHandlerThread.java:244)
at winstone.RequestHandlerThread.run(RequestHandlerThread.java:150)
at java.lang.Thread.run(Unknown Source)
>>