It's available online: https://doc.rust-lang.org/book/second-edition/ , a publisher that didn't believe in digital sharing that also agreed to publish it would be a little... surprising.
You're welcome; this was important to me. In addition, No Starch's commitment to letting the book be generally freely available on doc.rust-lang.org was mandatory, and they are awesome enough to be supportive of that :)
Thank you for your efforts. I purchased the book today!