tree be26af1fed02133f8be6aa0dcc76032129392ce2
parent ca5c75575ad2241c15d33a1d82d8e0b9522da321
author Haibo Huang <hhb@google.com> 1589842255 -0700
committer Haibo Huang <hhb@google.com> 1589842255 -0700

Upgrade rust/crates/once_cell to 1.4.0

Test: None
Change-Id: Ib5242a48f281cb07f5a42e8b430be7edfd421deb