Swap to better format macro
Swap to better format macro

This'll make it easier to not forget to switch back to format! when it
gets updated.

jmesmon/rust-postgres,sfackler/rust-postgres,achanda/rust-postgres,ddrmanxbxfr/rust-postgres,jmesmon/rust-postgres,sfackler/rust-postgres,ddrmanxbxfr/rust-postgres,achanda/rust-postgres,tempbottle/rust-postgres,tempbottle/rust-postgres