refactor: move env/osstr imports to avoid warnings
refactor: move env/osstr imports to avoid warnings

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