PocketIC - Rust -> Arc counter overflow ERROR

Developers
1

Hi,

i’m using PocketIC to test my rust based canister. I get a panicked but it doesn’t actually break the test. everything completes as normal. Wondering if this is something to be concerned about?

2024-08-18 22:42:10.970410511 UTC: [Canister a2cb4-hh777-77775-aaaba-cai] here in loop : Principal { len: 10, bytes: [255, 255, 255, 255, 255, 160, 0, 3, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0] }
2024-08-18 22:42:10.970410512 UTC: [Canister a2cb4-hh777-77775-aaaba-cai] Panicked at 'Arc counter overflow', /rustc/129f3b9964af4d4a709d1383930ade12dfe7c081/library/alloc/src/sync.rs:2843:13
2024-08-18 22:42:10.970410512 UTC: [Canister a2cb4-hh777-77775-aaaba-cai] Panicked at 'Arc counter overflow', /rustc/129f3b9964af4d4a709d1383930ade12dfe7c081/library/alloc/src/sync.rs:2843:13
2024-08-18 22:42:10.970410513 UTC: [Canister a2cb4-hh777-77775-aaaba-cai] here in loop : Principal { len: 10, bytes: [255, 255, 255, 255, 255, 160, 0, 4, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0] }

This error seems to happen when I upgrade my archive canisters from inside the main canister


pub async fn update_archive_canisters() -> Result<(), String> {
  let archive_canisters = read_state(|s| s.data.swaps.get_archive_canisters());
    let version = read_state(|s| s.data.version.clone());
    let test_mode = read_state(|s| s.env.is_test_mode());
    let mut current_auth_prins = read_state(|s| s.data.authorized_principals.clone());
    let this_canister_id = read_state(|s| s.env.canister_id());

    current_auth_prins.push(this_canister_id);
    trace(&format!("SWAP Canister :: init args version {}", version));

    let init_args = match
        Encode!(
            &(InitArgArchive {
                authorized_principals: current_auth_prins,
                test_mode: test_mode,
                version: version,
            })
        )
    {
        Ok(encoded_init_args) => encoded_init_args,
        Err(e) => {
            return Err(format!("ERROR : failed to create init args with error - {e}"));
        }
    };
    trace(&format!("here 1"));

    for archive in archive_canisters {
        let init_args = init_args.clone();
        let install_args = InstallCodeArgument {
            mode: CanisterInstallMode::Upgrade(None),
            canister_id: archive.canister_id,
            wasm_module: ARCHIVE_WASM.to_vec().clone(),
            arg: init_args.clone(),
        };
        trace(&format!("here in loop : {:?}", archive.canister_id));
        match install_code(install_args).await {
            Ok(()) => {
                debug!("SUCCESS : archive canister upgraded");
            }
            Err((code, msg)) => {
                trace(&format!("ERROR upgrading archive canister : {code:?} - {msg}"));
                ic_cdk::println!(
                    "ERROR : failed to install canister code for arhcive canister with error : {} - {}",
                    code as i32,
                    msg
                );
            }
        }
    }

    Ok(())
}
2

I tried running sequentially also, but i get the same error

3

So I wasn’t stopping and starting my canisters before upgrading