Originally reported here: https://github.com/rust-lang/rust/pull/48986#issuecomment-374094440 Looks like this happens only when a built-in command is a prefix of external one? That is, `cargo fmt` works, `cargo install-update` fails.
Originally reported here: rust-lang/rust#48986 (comment)
Looks like this happens only when a built-in command is a prefix of external one? That is,
cargo fmtworks,cargo install-updatefails.