Do not look for external modules when the input is from stdin
Do not look for external modules when the input is from stdin

graydon/rust,aidancully/rust,aidancully/rust,graydon/rust,graydon/rust,aidancully/rust,rust-lang/rustfmt,graydon/rust,aidancully/rust,graydon/rust,aidancully/rust,rust-lang/rustfmt,SingingTree/rustfmt,SingingTree/rustfmt,aidancully/rust,graydon/rust