diff -r b8ba46c97cdd -r fe7d2cf0b429 rust/hg-core/Cargo.toml
--- a/rust/hg-core/Cargo.toml	Fri Mar 06 17:51:03 2020 +0100
+++ b/rust/hg-core/Cargo.toml	Fri Mar 06 17:51:24 2020 +0100
@@ -21,6 +21,7 @@
 regex = "1.1.0"
 twox-hash = "1.5.0"
 same-file = "1.0.6"
+crossbeam = "0.7.3"
 
 [dev-dependencies]
 clap = "*"