History of err 1 change

In src/cli/ui.rs, lines 187–189 on bdddd0c53720d9ff6deb4beecb1a3a2107aeb4c0bdecb10e8bfdd8ec4613df7c. 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 187,189:src/cli/ui.rs.