Function execute 

pub fn execute(
    store: &Path,
    scratch_parent: &Path,
    target: &TargetContract,
    destination: &Path,
    embedder: &dyn Embedder,
    batch: usize,
) -> Result<ExecuteOutcome, MemoryError>

Diagnose, stage, lock, rebuild, release — the whole non-dry-run path.

A pre-existing journal at the derived workspace is resumed, provided it describes this exact source, fingerprint and target; anything else about it is a refusal, never an overwrite.

Errors

Returns crate::MemoryError when the regime resolution refuses, the destination holds data no journal accounts for, the journal describes a different migration, the lock is held or left from a crash, or the pass itself fails.