update clippy submodule

updates to cafef7b

src/Cargo.lock

@@ -296,12 +296,14 @@ version = "0.0.212"
 dependencies = [
  "cargo_metadata 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "clippy-mini-macro-test 0.2.0",
+ "clippy_dev 0.0.1",
  "clippy_lints 0.0.212",
  "compiletest_rs 0.3.13 (registry+https://github.com/rust-lang/crates.io-index)",
  "derive-new 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-workspace-hack 1.0.0",
+ "rustc_tools_util 0.1.0",
  "semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.75 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.75 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -311,6 +313,16 @@ dependencies = [
 name = "clippy-mini-macro-test"
 version = "0.2.0"
 
+[[package]]
+name = "clippy_dev"
+version = "0.0.1"
+dependencies = [
+ "clap 2.32.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "itertools 0.7.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "clippy_lints"
 version = "0.0.212"
@@ -2361,6 +2373,10 @@ dependencies = [
  "serialize 0.0.0",
 ]
 
+[[package]]
+name = "rustc_tools_util"
+version = "0.1.0"
+
 [[package]]
 name = "rustc_traits"
 version = "0.0.0"