⇒  jekyll import tumblr --url http://blog.devalias.net --format md --grab_images true --add_highlights true --rewrite_urls true -t
       Deprecation: The 'url' setting can only be set in your config files.
Fetching http://blog.devalias.net/api/read/json/?num=50&start=0
Page: 1 - Posts: 50
Fetching http://blog.devalias.net/api/read/json/?num=50&start=50
Page: 2 - Posts: 0
Configuration file: none

/Users/devalias/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/jekyll-import-0.10.0/lib/jekyll-import/importers/tumblr.rb:211:in `block in rewrite_urls_and_redirects': uninitialized constant Jekyll::Post (NameError)
    from /Users/devalias/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/jekyll-import-0.10.0/lib/jekyll-import/importers/tumblr.rb:206:in `map'
    from /Users/devalias/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/jekyll-import-0.10.0/lib/jekyll-import/importers/tumblr.rb:206:in `rewrite_urls_and_redirects'
    from /Users/devalias/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/jekyll-import-0.10.0/lib/jekyll-import/importers/tumblr.rb:61:in `process'
    from /Users/devalias/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/jekyll-import-0.10.0/lib/jekyll-import/importer.rb:23:in `run'
    from /Users/devalias/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/jekyll-import-0.10.0/lib/jekyll-import.rb:26:in `block (3 levels) in add_importer_commands'
    from /Users/devalias/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/mercenary-0.3.5/lib/mercenary/command.rb:220:in `block in execute'
    from /Users/devalias/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/mercenary-0.3.5/lib/mercenary/command.rb:220:in `each'
    from /Users/devalias/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/mercenary-0.3.5/lib/mercenary/command.rb:220:in `execute'
    from /Users/devalias/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/mercenary-0.3.5/lib/mercenary/program.rb:42:in `go'
    from /Users/devalias/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/mercenary-0.3.5/lib/mercenary.rb:19:in `program'
    from /Users/devalias/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/jekyll-3.1.1/bin/jekyll:13:in `<top (required)>'
    from /Users/devalias/.rbenv/versions/2.3.0/bin/jekyll:23:in `load'
    from /Users/devalias/.rbenv/versions/2.3.0/bin/jekyll:23:in `<main>'