Adjust for changed representation of box expressions in AST
Adjust for changed representation of box expressions in AST

SingingTree/rustfmt,flutterhash/rustfmt,graydon/rust,SingingTree/rustfmt,aidancully/rust,graydon/rust,graydon/rust,Emilgardis/rustfmt,studoot/rustfmt,Emilgardis/rustfmt,rust-lang/rustfmt,studoot/rustfmt,rust-lang/rustfmt,aidancully/rust,aidancully/rust,graydon/rust,graydon/rust,aidancully/rust,aidancully/rust,graydon/rust,aidancully/rust