Dart plugin doesn't install in CLion but works elsewhere

I've downloaded the Dart plugin 143.1566 and installed it successfully in PyCharm.  https://plugins.jetbrains.com/plugin/6351

Now I am trying the CLion evaluation version and installing the same plugin gives the error message "Plugin 'Dart' is incompatible with this installation".

The Dart plugin page (link above) lists CLion as a supported platform. Is this because I'm using CLion evaluation or is the Dart plugin actually not supported in CLion?