Clear Compilation Error

data.sql

DROP TABLE videos;
DROP TABLE video_releases;
DROP TABLE actors;
DROP TABLE performances;

CREATE TABLE videos (
    id            integer NOT NULL,
    title         varchar(40) NOT NULL
);

CREATE TABLE video_releases (
    id             integer NOT NULL,
    releaseable_id integer NOT NULL,
    title          varchar(40) NOT NULL
);

CREATE TABLE actors (
    id            integer NOT NULL,
    name          varchar(40) NOT NULL
);

CREATE TABLE performances (
    video_id      integer NOT NULL,
    actor_id      integer NOT NULL
);

INSERT INTO videos VALUES (1, 'Video Title');
INSERT INTO video_releases VALUES (1, 1, 'Video Release');
INSERT INTO actors VALUES (1, 'Joe Bob');
INSERT INTO performances VALUES (1, 1);

test.cr

require "clear"

Clear::SQL.init("postgres://russ@localhost:5432/association-test")

class Video
  include Clear::Model

  self.table = "videos"

  with_serial_pkey

  column id : Int64, primary: true
  column title : String

  has_many performances : Performance, foreign_key: :video_id
  has_many actors : Actor, through: Performance, foreign_key: :actor_id, own_key: :video_id
  has_many video_releases : VideoRelease, foreign_key: :releaseable_id
end

class VideoRelease
  include Clear::Model

  self.table = "video_releases"

  with_serial_pkey

  column id : Int64, primary: true
  column title : String

  belongs_to video : Video, foreign_key: :releaseable_id
end

class Actor
  include Clear::Model

  self.table = "actors"

  with_serial_pkey

  column id : Int64, primary: true
  column name : String

  has_many performances : Performance, foreign_key: :actor_id
  has_many videos : Video, through: Performance, foreign_key: :video_id, own_key: :actor_id
end

class Performance
  include Clear::Model

  self.table = "performances"

  belongs_to actor : Actor
  belongs_to video : Video, primary: true
end

puts VideoRelease.query.with_video(&.with_actors).first.inspect