Database Migration Fails on SQL Server 2012 in 2008 compat mode

In "fecru-2.10.4\sql\SQLSERVER2008\schema" tables_81.sql: the following line creates a PK index (of 1128 bytes) 228 bytes larger than SQL Server's limit of 900 bytes.

create table cru_recently_visited (cru_user_name nvarchar(255) not null, cru_item_type nvarchar(80) not null, cru_entity_id nvarchar(255) not null, cru_last_viewed numeric(19,0) not null, primary key (cru_user_name, cru_item_type, cru_entity_id));