History of unlink 1 change

In crates/hub/src/signin.rs, lines 271–278 on 1870e4fa98086468364a61d2fa556f7fe5913bccd31404c75d8836cb12097d6c. Every change that wrote or deleted one of these lines, or deleted a line from between them. Exact, because each line keeps its identity across edits; edits elsewhere in the file are not here. Also: oxy log -L 271,278:crates/hub/src/signin.rs.