History of err 1 change

In src/cli/ui.rs, lines 187–189 on c2d790f9fa9545028cb6ea29223212bdf4fab3e4719e6f942f60c21896917ac3. 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.