try fix

core/state/database.go

@@ -251,7 +251,7 @@ func (db *CachingDB) ReaderEIP7928(stateRoot common.Hash, accessList map[common.
 	// Construct the state reader with background prefetching
 	pr := newPrefetchStateReader(r, accessList, threads)
 
-	return newReader(db.codedb.Reader(), pr), nil
+	return newReaderWithPrefetch(db.codedb.Reader(), pr, pr), nil
 }
 
 // OpenTrie opens the main account trie at a specific root hash.

core/state/reader.go

@@ -529,6 +529,7 @@ func (r *stateReaderWithStats) GetStateStats() StateReaderStats {
 type reader struct {
 	ContractCodeReader
 	StateReader
+	PrefetcherMetricer
 }
 
 // newReader constructs a reader with the supplied code reader and state reader.
@@ -539,6 +540,14 @@ func newReader(codeReader ContractCodeReader, stateReader StateReader) *reader {
 	}
 }
 
+func newReaderWithPrefetch(codeReader ContractCodeReader, stateReader StateReader, metricer PrefetcherMetricer) *reader {
+	return &reader{
+		ContractCodeReader: codeReader,
+		StateReader:        stateReader,
+		PrefetcherMetricer: metricer,
+	}
+}
+
 // GetCodeStats returns the statistics of code access.
 func (r *reader) GetCodeStats() ContractCodeReaderStats {
 	if stater, ok := r.ContractCodeReader.(ContractCodeReaderStater); ok {

core/state/reader_eip_7928.go

@@ -139,6 +139,11 @@ func newPrefetchStateReaderInternal(reader StateReader, tasks []*fetchTask, nThr
 	return r
 }
 
+func (r *prefetchStateReader) Metrics() PrefetchMetrics {
+	// TODO (jwasinger) actually implement this
+	return PrefetchMetrics{}
+}
+
 func (r *prefetchStateReader) Close() {
 	r.closeOnce.Do(func() {
 		close(r.term)