Adjust to breaking change rust-lang/rust#26728
Adjust to breaking change rust-lang/rust#26728

novocaine/rust-cpython,tempbottle/rust-cpython,ehiggs/rust-cpython,naufraghi/rust-cpython,dgrunwald/rust-cpython,eneas193933/rust-cpython,fivejjs/rust-cpython,naufraghi/rust-cpython,dgrunwald/rust-cpython,naufraghi/rust-cpython