// instead of hard-coding this test
if entry.file_name() == "link_to_definition" {
cargo.env("RUSTDOCFLAGS", "-Zunstable-options --generate-link-to-definition");
// instead of hard-coding this test
if entry.file_name() == "link_to_definition" {
cargo.env("RUSTDOCFLAGS", "-Zunstable-options --generate-link-to-definition");