migrating to ruby 1.9.3 from 1.8.7

error while running the specs with 1.9.3

-sh-4.2$ bundle exec rspec spec/ > /home/local/PENNYWISE/venkatab/Desktop/specs_193.txt
/usr/local/rvm/gems/ruby-1.9.3-p0@redzone/gems/systemu-2.2.0/lib/systemu.rb:29: Use RbConfig instead of obsolete and deprecated Config.
/usr/local/rvm/gems/ruby-1.9.3-p0@redzone/gems/soap4r-1.5.8/lib/xsd/charset.rb:13: warning: variable $KCODE is no longer effective
/usr/local/rvm/gems/ruby-1.9.3-p0@redzone/gems/activesupport-3.0.10/lib/active_support/dependencies.rb:239:in `block in require': iconv will be deprecated in the future, use String#encode instead.
/usr/local/rvm/gems/ruby-1.9.3-p0@redzone/gems/soap4r-1.5.8/lib/soap/property.rb:68: warning: encoding option is ignored - u
/usr/local/rvm/gems/ruby-1.9.3-p0@redzone/gems/soap4r-1.5.8/lib/soap/property.rb:69: warning: encoding option is ignored - u
/usr/local/rvm/gems/ruby-1.9.3-p0@redzone/gems/soap4r-1.5.8/lib/soap/property.rb:70: warning: encoding option is ignored - u
DEPRECATION WARNING: Base#before_validation has been deprecated, please use Base.before_validation :method instead. (called from <class:DartAd> at /home/local/PENNYWISE/venkatab/Desktop/work_space/redzone-latest-updated/app/models/dart_ad.rb:9)
DEPRECATION WARNING: Base#before_validation has been deprecated, please use Base.before_validation :method instead. (called from <class:NeuronAd> at /home/local/PENNYWISE/venkatab/Desktop/work_space/redzone-latest-updated/app/models/neuron_ad.rb:90)
/usr/local/rvm/gems/ruby-1.9.3-p0@redzone/gems/activerecord-3.0.10/lib/active_record/attribute_methods/read.rb:89: warning: redefining `object_id' may cause serious problems
/usr/local/rvm/gems/ruby-1.9.3-p0@redzone/gems/activesupport-3.0.10/lib/active_support/dependencies.rb:235:in `load': /home/local/PENNYWISE/venkatab/Desktop/work_space/redzone-latest-updated/spec/models/payable_spec.rb:144: syntax error, unexpected ',', expecting tASSOC (SyntaxError)
..., :custom_dimensions => {"Low", "Male"})
...                               ^
/home/local/PENNYWISE/venkatab/Desktop/work_space/redzone-latest-updated/spec/models/payable_spec.rb:144: syntax error, unexpected '}', expecting keyword_end
...m_dimensions => {"Low", "Male"})
...                               ^
	from /usr/local/rvm/gems/ruby-1.9.3-p0@redzone/gems/activesupport-3.0.10/lib/active_support/dependencies.rb:235:in `block in load'
	from /usr/local/rvm/gems/ruby-1.9.3-p0@redzone/gems/activesupport-3.0.10/lib/active_support/dependencies.rb:227:in `load_dependency'
	from /usr/local/rvm/gems/ruby-1.9.3-p0@redzone/gems/activesupport-3.0.10/lib/active_support/dependencies.rb:235:in `load'
	from /usr/local/rvm/gems/ruby-1.9.3-p0@redzone/gems/rspec-core-2.8.0/lib/rspec/core/configuration.rb:698:in `block in load_spec_files'
	from /usr/local/rvm/gems/ruby-1.9.3-p0@redzone/gems/rspec-core-2.8.0/lib/rspec/core/configuration.rb:698:in `map'
	from /usr/local/rvm/gems/ruby-1.9.3-p0@redzone/gems/rspec-core-2.8.0/lib/rspec/core/configuration.rb:698:in `load_spec_files'
	from /usr/local/rvm/gems/ruby-1.9.3-p0@redzone/gems/rspec-core-2.8.0/lib/rspec/core/command_line.rb:22:in `run'
	from /usr/local/rvm/gems/ruby-1.9.3-p0@redzone/gems/rspec-core-2.8.0/lib/rspec/core/runner.rb:80:in `run_in_process'
	from /usr/local/rvm/gems/ruby-1.9.3-p0@redzone/gems/rspec-core-2.8.0/lib/rspec/core/runner.rb:69:in `run'
	from /usr/local/rvm/gems/ruby-1.9.3-p0@redzone/gems/rspec-core-2.8.0/lib/rspec/core/runner.rb:10:in `block in autorun'