History of link 2 changes

In crates/hub/src/signin.rs, lines 315–325 on 8a48dd83017887dd6e31775ac1ad4684d223e9932110c29841b8eb63fbd21449. 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 315,325:crates/hub/src/signin.rs.