Solr not starting. Any idea why?

 bundle exec rake sunspot:solr:start
DEPRECATION WARNING: Support for Rails < 4.1.0 will be dropped. (called from warn at /Users/http://ift.tt/1S0t6XL)
Connecting to database specified by database.yml
Removing stale PID file at [file in solr file...]
Successfully started Solr ...

$ ps aux | grep solr
jeffrey.wan     59427   0.1  0.1  5099980  14924   ??  S    Thu03PM  12:39.85 /usr/bin/java -server -Xss256k -Xms512m -Xmx512m -XX:NewRatio=3 -XX:SurvivorRatio=4 -XX:TargetSurvivorRatio=90 -XX:MaxTenuringThreshold=8 -XX:+UseConcMarkSweepGC -XX:+UseParNewGC -XX:ConcGCThreads=4 -XX:ParallelGCThreads=4 -XX:+CMSScavengeBeforeRemark -XX:PretenureSizeThreshold=64m -XX:+UseCMSInitiatingOccupancyOnly -XX:CMSInitiatingOccupancyFraction=50 -XX:CMSMaxAbortablePrecleanTime=6000 -XX:+CMSParallelRemarkEnabled -XX:+ParallelRefProcEnabled -verbose:gc -XX:+PrintHeapAtGC -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintGCTimeStamps -XX:+PrintTenuringDistribution -XX:+PrintGCApplicationStoppedTime -Xloggc:/Users/jeffrey.wan/.rbenv/versions/2.1.6/lib/ruby/gems/2.1.0/gems/sunspot_solr-2.2.4/solr/server/logs/solr_gc.log -Djetty.port=8982 -DSTOP.PORT=7982 -DSTOP.KEY=solrrocks -Duser.timezone=UTC -Djetty.home=/Users/http://ift.tt/1S0t6XN -Dsolr.solr.home=/Users/http://ift.tt/1VuWgE0 -Dsolr.install.dir=/Users/http://ift.tt/1S0t6qW -jar start.jar --module=http
jeffrey.wan      9004   0.0  0.0  2434840    772 s002  S+   10:06AM   0:00.00 grep solr

The processes don't show a solr process. Any idea why?

This is my sunspot.yml:

production:
  solr:
    hostname: localhost
    port: 8983
    log_level: WARNING
    # read_timeout: 2
    # open_timeout: 0.5

development:
  solr:
    hostname: localhost
    port: 8982
    log_level: INFO
    solr_home: solr
    path: /solr/collection1


test:
  solr:
    hostname: localhost
    port: 8981
    log_level: WARNING