i was getting this berror when cargo build-sbf or anchor build ..:

cargo build-sbf error: failed to parse lock file at: /home/anrchsun/devs/ana-cain/Cargo.lock

but if you all could read carefully the solution was given in error message:

Caused by: lock file version 4 requires -Znext-lockfile-bump

so i ran :slight_smile:

cargo build-sbf -- -Znext-lockfile-bump

and everything worked fine... Compiling borsh v0.9.3 Compiling anchor-attribute-access-control v0.30.1 Compiling anchor-attribute-account v0.30.1 Compiling anchor-attribute-error v0.30.1 Compiling anchor-attribute-event v0.30.1 Compiling anchor-attribute-constant v0.30.1 Compiling anchor-derive-serde v0.30.1 Compiling anchor-attribute-program v0.30.1 Compiling anchor-derive-accounts v0.30.1 ^[[B Building [=======================> ] 165/169: solana-program, solana-program Compiling anchor-lang v0.30.1 Compiling ana-chain v0.0.0 (/home/anrchsun/devs/ana-cain/program) Finished release [optimized] target(s) in 1m 31s..