History of err 1 change

In src/cli/ui.rs, lines 187–189 on da29defdcb979896472dc431b2ba7404a6eaa041f949f38c5ac64c7c89e3ea45. 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.