ActiveRecord::JDBCError: org.postgresql.util.PSQLException: ERROR: column "read_only" cannot be cast automatically to type boolean
  Hint: Specify a USING expression to perform the conversion.: ALTER TABLE "classifications" ALTER COLUMN "read_only" TYPE booleanarjdbc/jdbc/RubyJdbcConnection.java:547:in `execute'
/Users/dberger/Repositories/manageiq-djberg96/vmdb/db/migrate/20101216235159_fix_boolean_columns_in_classifications.rb:21:in `up'
ActiveRecord::StatementInvalid: ActiveRecord::JDBCError: org.postgresql.util.PSQLException: ERROR: column "read_only" cannot be cast automatically to type boolean
  Hint: Specify a USING expression to perform the conversion.: ALTER TABLE "classifications" ALTER COLUMN "read_only" TYPE boolean
arjdbc/jdbc/RubyJdbcConnection.java:547:in `execute'
/Users/dberger/Repositories/manageiq-djberg96/vmdb/db/migrate/20101216235159_fix_boolean_columns_in_classifications.rb:21:in `up'
ActiveRecord::JDBCError: org.postgresql.util.PSQLException: ERROR: column "read_only" cannot be cast automatically to type boolean
  Hint: Specify a USING expression to perform the conversion.
arjdbc/jdbc/RubyJdbcConnection.java:547:in `execute'
/Users/dberger/Repositories/manageiq-djberg96/vmdb/db/migrate/20101216235159_fix_boolean_columns_in_classifications.rb:21:in `up'
Tasks: TOP => evm:db:reset => db:migrate
(See full trace by running task with --trace)