--- once_cell-1.3.0/Cargo.toml 2020-01-14T17:46:39+00:00 +++ once_cell-1.3.0/Cargo.toml 2020-01-15T00:57:23.465074+00:00 @@ -52,7 +52,7 @@ name = "test_synchronization" required-features = ["std"] [dependencies.parking_lot] -version = "0.9.0" +version = "0.10.0" optional = true default_features = false [dev-dependencies.crossbeam-utils]