Proxy::Proxies undecodable storage on Polkadot

[liamaharon]

https://github.com/polkadot-fellows/runtimes/actions/runs/7553599023/job/20564716569?pr=137

Looking into it

[liamaharon]

There's just a single problematic proxy, introduced here https://polkadot.subscan.io/extrinsic/300532-3 with key 0x1809d78346727a0ef58c0fa03bafa3231d885dcfb277f185f2d8e62a5f290c854d2d16b4be62d0e00e6de68b13b82479fbe988ab9ecb16bad446b67b993cdd9198cd41c7c6259c49.

My best guess is somehow it's in the old format used prior to paritytech/polkadot-sdk@cf4c744, and somehow the migration introduced at that commit did not apply to this key. I'll confirm tomorrow.

[liamaharon]

The above hypothesis is correct.

The proxy was not migrated correctly because the SudoBalances proxy type was removed from the runtime, rendering the proxy undecodable before it was able to be migrated. I am able to decode the proxy on this branch: liamaharon@23c9e98

I have opened a PR to simply remove these proxies from storage, since the account they originate from is an old admin acc, which has also become dormant. Could update the pr to instead properly migrate the proxy to the current format if deemed worth the time, but I doubt it..

[liamaharon]

Opened referenda to remove instead of via a migration https://polkadot.polkassembly.io/referenda/440

[liamaharon]

Referendum passed and confirmed all state decodes.

[bkontur]

very cool, also check-migrations for Kusama and Polkadot finally passed:
https://github.com/polkadot-fellows/runtimes/actions/runs/7802169560/job/21278977168?pr=137
https://github.com/polkadot-fellows/runtimes/actions/runs/7802169560/job/21278977603?pr=137