delete mode 100644 lib/std/debug/FormattedPanic.zig
 delete mode 100644 lib/std/debug/NoPanic.zig
 delete mode 100644 lib/std/debug/SimplePanic.zig
 create mode 100644 lib/std/debug/no_panic.zig
 create mode 100644 lib/std/debug/simple_panic.zig
 create mode 100644 test/cases/compile_errors/bad_panic_call_signature.zig
 create mode 100644 test/cases/compile_errors/bad_panic_generic_signature.zig
 delete mode 100644 test/cases/compile_errors/bad_panic_signature.zig
 create mode 100644 test/incremental/change_panic_handler_explicit