History of router 5 changes

In crates/oxy-server/src/lib.rs, lines 379–387 on e2a5edbf1395004a753dc161876e23b428cbdeaa1113cd0a0c13cd7775bdeb10. 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 379,387:crates/oxy-server/src/lib.rs.