diff -r 717686c5e461 -r 326fdce22fb2 rust/hg-cpython/src/dagops.rs
--- a/rust/hg-cpython/src/dagops.rs	Fri Jul 12 11:08:31 2019 +0200
+++ b/rust/hg-cpython/src/dagops.rs	Tue Jul 02 17:15:03 2019 +0200
@@ -9,10 +9,12 @@
 //! `hg-core` package.
 //!
 //! From Python, this will be seen as `mercurial.rustext.dagop`
-use crate::conversion::{py_set, rev_pyiter_collect};
-use cindex::Index;
+use crate::{
+    cindex::Index,
+    conversion::{py_set, rev_pyiter_collect},
+    exceptions::GraphError,
+};
 use cpython::{PyDict, PyModule, PyObject, PyResult, Python};
-use exceptions::GraphError;
 use hg::dagops;
 use hg::Revision;
 use std::collections::HashSet;