[rust] add chrono 0.4.2

Change-Id: I60306a0c0ae7ebaa74a91c5e4eef0d255f3f4fff
diff --git a/rustc_deps/Cargo.lock b/rustc_deps/Cargo.lock
index 2cc6e2a..077310a 100644
--- a/rustc_deps/Cargo.lock
+++ b/rustc_deps/Cargo.lock
@@ -384,6 +384,7 @@
  "byteorder 1.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "bytes 0.4.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "cc 1.0.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "chrono 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "clap 2.31.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "crossbeam 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "encode_unicode 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
diff --git a/rustc_deps/Cargo.toml b/rustc_deps/Cargo.toml
index 88652de..6bddc36 100644
--- a/rustc_deps/Cargo.toml
+++ b/rustc_deps/Cargo.toml
@@ -15,6 +15,7 @@
 byteorder = { version = "1", features = ["i128"] }
 bytes = "0.4.7"
 cc = "1"
+chrono = "0.4.2"
 clap = "2.29"
 crossbeam = "0.3.2"
 encode_unicode = "0.1.3"