[BUG] - `nix run` testnet node produces 'Obsolete Node' upon reaching Babbage era

[aleeusgr]

Internal/External External

Area Other Any other topic (Delegation, Ranking, ...).

Summary Testnet node stops sync, produces error:

[nixos:cardano.node.ErrorPolicy:Notice:122] [2022-09-22 06:57:28.40 UTC] IP 184.169.196.177:3001 ErrorPolicySuspendCons
umer (Just (ConnectionExceptionTrace (SubscriberError {seType = SubscriberParallelConnectionCancelled, seMessage = "Par
allel connection cancelled", seStack = []}))) 1s                                                                       

[nixos:cardano.node.DnsSubscription:Error:11344] [2022-09-22 06:57:28.71 UTC] Domain: "relays-new.cardano-testnet.iohkd
ev.io" Application Exception: 3.72.26.163:3001 HeaderError (At (Block {blockPointSlot = SlotNo 64387391, blockPointHash
 = f58545f02a8961b17256a888ea2722bcf60fd4fe25e317daa96c6391048d97f2})) (HeaderEnvelopeError (OtherHeaderEnvelopeError (
HardForkEnvelopeErrFromEra S (S (S (S (S (Z (WrapEnvelopeErr {unwrapEnvelopeErr = ObsoleteNode 7 6}))))))))) (Tip (Slot
No 64385272) 404c38a2e2e4e7cf0533d40f4fe9ef60eaeea8abd369121ec3e12525d210291a (BlockNo 3734358)) (Tip (SlotNo 69460497)
 aa997f71791a8c9631a8be1d4adb743c63fb8b0ef3215d3e59b4cb6b1c082759 (BlockNo 3846609))                                   

[nixos:cardano.node.ErrorPolicy:Warning:122] [2022-09-22 06:57:28.71 UTC] IP 3.72.26.163:3001 ErrorPolicySuspendPeer (J
ust (ApplicationExceptionTrace (HeaderError (At (Block {blockPointSlot = SlotNo 64387391, blockPointHash = f58545f02a89
61b17256a888ea2722bcf60fd4fe25e317daa96c6391048d97f2})) (HeaderEnvelopeError (OtherHeaderEnvelopeError (HardForkEnvelop
eErrFromEra S (S (S (S (S (Z (WrapEnvelopeErr {unwrapEnvelopeErr = ObsoleteNode 7 6}))))))))) (Tip (SlotNo 64385272) 40
4c38a2e2e4e7cf0533d40f4fe9ef60eaeea8abd369121ec3e12525d210291a (BlockNo 3734358)) (Tip (SlotNo 69460497) aa997f71791a8c
9631a8be1d4adb743c63fb8b0ef3215d3e59b4cb6b1c082759 (BlockNo 3846609))))) 200s 200s 

Steps to reproduce Steps to reproduce the behavior:

1. Follow the guide: https://github.com/input-output-hk/cardano-node/blob/master/doc/getting-started/building-the-node-using-nix.md
2. nix run github:input-output-hk/cardano-node#testnet/node
3. Wait till Babbage
4. See error

Expected behavior cardano-cli query tip should produce 100% at some point.

System info (please complete the following information):

• OS Name: Linux nixos
• OS Version 5.15.68
• Node version (output of cardano-node --version) Starting: exec /nix/store/4j41g12vfal71mry6ajni0jmjhk4fw0y-cardano-node-exe-cardano-node-1.36.0/bin/cardano-node
• CLI version (output of cardano-cli --version) cardano-cli 1.36.0 - linux-x86_64 - ghc-8.10 git rev a5724ad19066a547aa16b50c1e5ed8d4a3797d09

[aleeusgr]

https://cardano.stackexchange.com/questions/8942/configuring-nix-cardano-node-for-pre-production-preview