Workaround rustc bug
Workaround rustc bug

There's an assert getting tripped in the metadata encoder

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