gem - What does 'Don't know how to build task 'bootstrap' mean? -

I was trying to make merry while following the instructions. On the move 'Rake Mani', I got several warnings and a failure notice A sample of production is as follows:

Warning: org / dynalang / dynalink / monomorphiccollect site. Class (org / dynalang / dynalink: monomorphiccollectite class.): Newer than the major version 51 50, the top version supported by the highest compiler, it is recommended that the compiler be upgraded. Note: Users use / override an excluded API or Java / Amar / SRC / Meg / Amar / Dunnbootstrap.java. Note: recompiled with exclute: exclusion for details. 4 Warning Building Jar: / Users / Pal / Dewi / Interesting / Amariah / Jawalib / Amarna- Bootstrap. Rack aborted! How to make the work 'bootstrap' is not known

How should I start troubleshooting this? For example, which compiler should be upgraded, and how can it be done?

This problem has been fixed by the master, so you should be able to master and just fine creation should do .

If you are deliberately using an old tree, then there is another option for making gem:

  Rock jar: bootstrap gem build mirah gemspec   
 Your error message is being received because before the Charles: Gem function incorrectly refers to "Jar: Bootstrap" as "Bootstrap".