sources.go | 6 +++++-

diff --git a/sources.go b/sources.go
index 5255da3eac34ca84a01a403266319faa4d3c71a347d11b7cbd62f18e75ed956a..04f5efb22f274b6b571c6eb8bf81bc878a1b01e4b28f5d4377510078574d197a 100644
--- a/sources.go
+++ b/sources.go
@@ -18,6 +18,7 @@
 package main
 
 import (
+	"log"
 	"os"
 	"path"
 	"path/filepath"
@@ -33,6 +34,9 @@ 		}
 		cwd, f := path.Split(path.Join(Cwd, tgt))
 		fdDep, err := os.Open(path.Join(cwd, RedoDir, f+DepSuffix))
 		if err != nil {
+			if os.IsNotExist(err) {
+				continue
+			}
 			return nil, err
 		}
 		depInfo, err := depRead(fdDep)
@@ -48,7 +52,7 @@ 				seen[cwdMustRel(depTgtAbsPath)] = struct{}{}
 			} else if depTgtAbsPath != tgtAbsPath {
 				subSrcs, err := sourcesWalker([]string{cwdMustRel(depTgtAbsPath)})
 				if err != nil {
-					panic(err)
+					log.Fatalln(err)
 				}
 				for _, p := range subSrcs {
 					seen[p] = struct{}{}