diff --git a/extern/sector-storage/sched_test.go b/extern/sector-storage/sched_test.go
index 2245c8a3f..77e674793 100644
--- a/extern/sector-storage/sched_test.go
+++ b/extern/sector-storage/sched_test.go
@@ -68,6 +68,10 @@ type schedTestWorker struct {
 	ignoreResources bool
 }
 
+func (s *schedTestWorker) DataCid(ctx context.Context, pieceSize abi.UnpaddedPieceSize, pieceData storage.Data) (storiface.CallID, error) {
+	panic("implement me")
+}
+
 func (s *schedTestWorker) SealPreCommit1(ctx context.Context, sector storage.SectorRef, ticket abi.SealRandomness, pieces []abi.PieceInfo) (storiface.CallID, error) {
 	panic("implement me")
 }
diff --git a/extern/sector-storage/teststorage_test.go b/extern/sector-storage/teststorage_test.go
index c825542ea..0c15fbf7b 100644
--- a/extern/sector-storage/teststorage_test.go
+++ b/extern/sector-storage/teststorage_test.go
@@ -23,6 +23,10 @@ type testExec struct {
 	apch chan chan apres
 }
 
+func (t *testExec) DataCid(ctx context.Context, pieceSize abi.UnpaddedPieceSize, pieceData storage.Data) (abi.PieceInfo, error) {
+	panic("implement me")
+}
+
 func (t *testExec) GenerateWinningPoSt(ctx context.Context, minerID abi.ActorID, sectorInfo []proof.ExtendedSectorInfo, randomness abi.PoStRandomness) ([]proof.PoStProof, error) {
 	panic("implement me")
 }