throw error if checkpointing missing file

go/pkg/repository/repository.go

@@ -396,6 +396,9 @@ func CopyToTempDir(localPath string, includePath string) (tempDir string, err er
 	// then copy the ones that match the includePath.
 	// TODO(andreas): only scan files in the includePath
 	filesToCopy, err := getListOfFilesToPut(localPath, tempDir)
+	if err != nil {
+		return "", err
+	}
 	count := 0
 	for _, file := range filesToCopy {
 
@@ -424,6 +427,10 @@ func CopyToTempDir(localPath string, includePath string) (tempDir string, err er
 		count += 1
 	}
 
+	if count == 0 {
+		return "", fmt.Errorf("No files matched '%s' in %s", includePath, localPath)
+	}
+
 	console.Debug("Copied %d files to temporary directory (took %.3f seconds)", count, time.Since(start).Seconds())
 
 	return tempDir, err

go/pkg/repository/repository_test.go

@@ -202,4 +202,8 @@ func TestCopyToTempDir(t *testing.T) {
 	contents, err = ioutil.ReadFile(path.Join(tempDir, "my/folder/bar"))
 	require.NoError(t, err)
 	require.Equal(t, "bar", string(contents))
+
+	// with missing file
+	_, err = CopyToTempDir(dir, "not-existing")
+	require.Error(t, err)
 }

python/tests/test_experiment.py

@@ -530,6 +530,9 @@ def test_create_project_options(
             with open("keepsake.yaml", "w") as f:
                 f.write("repository: file://.keepsake/")
 
+        with open("foo.txt", "w") as f:
+            f.write("hello world")
+
         project = Project(repository=repo, directory=directory)
 
         if exception: