Removing vague i/o category
Removing vague i/o category

Susurrus/crates.io,rust-lang/crates.io,Susurrus/crates.io,rust-lang/crates.io,steveklabnik/crates.io,Susurrus/crates.io,steveklabnik/crates.io,Susurrus/crates.io,rust-lang/crates.io,steveklabnik/crates.io,steveklabnik/crates.io,rust-lang/crates.io