Weird error message on current directory deletion

I tried the following:

1. dfx start --background
2. Remove current directory.

I expected to see this happen: a nice error message and DFX quitting.

Instead, this happened:

Oct 14 03:45:44.915 CRIT s:/n:/ic_state_manager/ic_state_manager Failed to make a checkpoint @9200: IoError { path: "/home/porton/Projects/join-proxy-motoko/.dfx/network/local/state/replicated_state/f3e0a9711469429c3d961cd911fea7495e3919476b8d5de66cba203f05d9a734/tip", message: "Failed to rename scratchpad to checkpoint 9200", io_err: Os { code: 2, kind: NotFound, message: "No such file or directory" } }

thread 'tokio-runtime-worker' panicked at rs/state_manager/src/lib.rs:2338:13:
Failed to make a checkpoint @9200: IoError { path: "/home/porton/Projects/join-proxy-motoko/.dfx/network/local/state/replicated_state/f3e0a9711469429c3d961cd911fea7495e3919476b8d5de66cba203f05d9a734/tip", message: "Failed to rename scratchpad to checkpoint 9200", io_err: Os { code: 2, kind: NotFound, message: "No such file or directory" } }
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
Oct 14 03:45:44.926 CRIT s:/n:/ic_state_manager/ic_state_manager Failed to make a checkpoint @9199: IoError { path: "/home/porton/Projects/join-proxy-motoko/.dfx/network/local/state/replicated_state/a6dfc52868e089ed1e5e5484e117df14d0f76fe21bde22e7555ed6a02f999124/tip", message: "Failed to rename scratchpad to checkpoint 9199", io_err: Os { code: 2, kind: NotFound, message: "No such file or directory" } }

Meta

dfx --version:

dfx 0.29.0

Start by reproducing the failure with dfx start --background, then inspect rs/state_manager/src/lib.rs:2338:13, where the reported panic occurs. Trace how the missing current-directory state is handled and identify how dfx should report the failure and quit cleanly; done means the panic and raw checkpoint errors are replaced by the intended error behavior.