History of err 1 change

In src/cli/ui.rs, lines 174–176 on b4fa2bc1ca6aabed7a2a89cc41b8d9b83993164eba99008d2a1bd74374784dce. 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 174,176:src/cli/ui.rs.