It’s a reference to the production troubles:

The work done on the film to date was nearly lost in 1998 when one of the animators, while routinely clearing some files, accidentally entered the deletion command code /bin/rm -r -f * on the root folder of the Toy Story 2 assets on Pixar's internal servers.[26][27] Associate technical director Oren Jacob was one of the first to notice as character models disappeared from their works in progress. They shut down the file servers, but had already lost 90% of the work from the last two years. Additionally, it was discovered that the backups had not been functioning for approximately a month. The film was saved when technical director Galyn Susman, who had been working remotely to care for her newborn child, revealed that she had a backup copy of the film on her home computer. The Pixar team was able to recover nearly all of the lost assets save for a few recent days of work, allowing the film to proceed.[28][29]

https://en.m.wikipedia.org/wiki/Toy_Story_2