Compilation failed with Ruby 2.1.0

[freiden]

The gem can't be installed with Ruby 2.1.0.
I'm using a ubuntu 12.04 LTS and rbenv

Here are the log from the gem_make.out:

/home/myhome/.rbenv/versions/2.1.0/bin/ruby extconf.rb
checking for rb_iseq_location_t in vm_core.h... no
checking for vm_core.h... no
checking for rb_iseq_location_t in vm_core.h... no
checking for vm_core.h... no
Makefile creation failed

No source for ruby-2.1.0-p0 provided with debugger-ruby_core_source gem.

*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers. Check the mkmf.log file for more details. You may
need configuration options.

Provided configuration options:
--with-opt-dir
--without-opt-dir
--with-opt-include
--without-opt-include=${opt-dir}/include
--with-opt-lib
--without-opt-lib=${opt-dir}/lib
--with-make-prog
--without-make-prog
--srcdir=.
--curdir
--ruby=/home/myhome/.rbenv/versions/2.1.0/bin/ruby

extconf failed, exit code 1

[tmm1]

Fixed in v0.3.3