History of main 1 change

In crates/hub/build.rs, lines 4–20 on 6a17805583532833680cc1bf30cc7c63cd4c6778aa3532b30dd8528f54b481fa. 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 4,20:crates/hub/build.rs.