History of signature_line 1 change

In src/main.rs, lines 81–87 on b288cd254343a8c981e7c891d9cbd4472d208a1cb643e9be69c71c479b4c3fa8. 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 81,87:src/main.rs.