diff --git a/chain/sync_test.go b/chain/sync_test.go
index 9240dea21..5964d18c8 100644
--- a/chain/sync_test.go
+++ b/chain/sync_test.go
@@ -73,7 +73,7 @@ func prepSyncTest(t testing.TB, h int) *syncTestUtil {
 
 	g, err := gen.NewGenerator()
 	if err != nil {
-		t.Fatal(err)
+		t.Fatalf("%+v", err)
 	}
 
 	ctx, cancel := context.WithCancel(context.Background())
diff --git a/go.mod b/go.mod
index e8570aace..c0a670362 100644
--- a/go.mod
+++ b/go.mod
@@ -20,7 +20,7 @@ require (
 	github.com/filecoin-project/go-data-transfer v0.0.0-20191219005021-4accf56bd2ce
 	github.com/filecoin-project/go-fil-markets v0.0.0-20200114015428-74d100f305f8
 	github.com/filecoin-project/go-paramfetch v0.0.1
-	github.com/filecoin-project/go-sectorbuilder v0.0.2-0.20200123134702-99304d8411ed
+	github.com/filecoin-project/go-sectorbuilder v0.0.2-0.20200123143044-d9cc96c53c55
 	github.com/filecoin-project/go-statestore v0.1.0
 	github.com/gbrlsnchs/jwt/v3 v3.0.0-beta.1
 	github.com/go-ole/go-ole v1.2.4 // indirect
diff --git a/go.sum b/go.sum
index 1dc1f5668..dc41267e3 100644
--- a/go.sum
+++ b/go.sum
@@ -117,8 +117,8 @@ github.com/filecoin-project/go-paramfetch v0.0.0-20200102181131-b20d579f2878/go.
 github.com/filecoin-project/go-paramfetch v0.0.1 h1:gV7bs5YaqlgpGFMiLxInGK2L1FyCXUE0rimz4L7ghoE=
 github.com/filecoin-project/go-paramfetch v0.0.1/go.mod h1:fZzmf4tftbwf9S37XRifoJlz7nCjRdIrMGLR07dKLCc=
 github.com/filecoin-project/go-sectorbuilder v0.0.1/go.mod h1:3OZ4E3B2OuwhJjtxR4r7hPU9bCfB+A+hm4alLEsaeDc=
-github.com/filecoin-project/go-sectorbuilder v0.0.2-0.20200123134702-99304d8411ed h1:XBuYbMEzBePbN8ks0P8BDOOo0KJxcseFP8ggDjsb+sk=
-github.com/filecoin-project/go-sectorbuilder v0.0.2-0.20200123134702-99304d8411ed/go.mod h1:ahsryULdwYoZ94K09HcfqX3QBwevWVldENSV/EdCbNg=
+github.com/filecoin-project/go-sectorbuilder v0.0.2-0.20200123143044-d9cc96c53c55 h1:XChPRKPZL+/N6a3ccLmjCJ7JrR+SFLFJDllv0BkxW4I=
+github.com/filecoin-project/go-sectorbuilder v0.0.2-0.20200123143044-d9cc96c53c55/go.mod h1:ahsryULdwYoZ94K09HcfqX3QBwevWVldENSV/EdCbNg=
 github.com/filecoin-project/go-statestore v0.1.0 h1:t56reH59843TwXHkMcwyuayStBIiWBRilQjQ+5IiwdQ=
 github.com/filecoin-project/go-statestore v0.1.0/go.mod h1:LFc9hD+fRxPqiHiaqUEZOinUJB4WARkRfNl10O7kTnI=
 github.com/fsnotify/fsnotify v1.4.7 h1:IXs+QLmnXW2CcXuY+8Mzv/fWEsPGWxqefPtCP5CnV9I=
diff --git a/storage/sbmock/sbmock.go b/storage/sbmock/sbmock.go
index b8ca9b69e..f28df2395 100644
--- a/storage/sbmock/sbmock.go
+++ b/storage/sbmock/sbmock.go
@@ -207,6 +207,10 @@ func (sb *SBMock) GetPath(string, string) (string, error) {
 	panic("nyi")
 }
 
+func (sb *SBMock) CanCommit(sectorID uint64) (bool, error) {
+	return true, nil
+}
+
 func (sb *SBMock) WorkerStats() sectorbuilder.WorkerStats {
 	panic("nyi")
 }