--- a/third_party/rust/dtoa-short/.cargo-checksum.json
+++ b/third_party/rust/dtoa-short/.cargo-checksum.json
@@ -1,1 +1,1 @@
-{"files":{".cargo-ok":"e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855","Cargo.toml":"90c3a15876071be21dddea79c9f5ce5720a07d81e46200a63ee2618a11291724","src/lib.rs":"7335c26a60f0b58a6849a066e4d8998cd202431f5abf4fc06e4f112249fa6cdb"},"package":"fe6f727b406462fd57c95fed84d1b0dbfb5f0136fcac005adba9ea0367c05cc8"}
\ No newline at end of file
+{"files":{".cargo-ok":"e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855","Cargo.toml":"72a50a7572b499bcb5fe019d7eb60741e7ab5ade14c61bad1a4342a9792720a1","src/lib.rs":"efac1b36819fe8414df20b3fca2ebd1590d320075d0796996c63c8a87cdbee90"},"package":"068d4026697c1a18f0b0bb8cfcad1b0c151b90d8edb9bf4c235ad68128920d1d"}
\ No newline at end of file

--- a/third_party/rust/dtoa-short/Cargo.toml
+++ b/third_party/rust/dtoa-short/Cargo.toml
@@ -7,17 +7,17 @@
 #
 # If you believe there's an error in this file please file an
 # issue against the rust-lang/cargo repository. If you're
 # editing this file be aware that the upstream Cargo.toml
 # will likely look very different (and much more reasonable)
 
 [package]
 name = "dtoa-short"
-version = "0.3.0"
+version = "0.3.1"
 authors = ["Xidorn Quan <me@upsuper.org>"]
 include = ["src/*.rs", "Cargo.toml"]
 description = "Serialize float number and truncate to certain precision"
 keywords = ["float"]
 categories = ["value-formatting"]
 license = "MPL-2.0"
 repository = "https://github.com/upsuper/dtoa-short"
 [dependencies.dtoa]

--- a/third_party/rust/dtoa-short/src/lib.rs
+++ b/third_party/rust/dtoa-short/src/lib.rs
@@ -63,17 +63,17 @@ fn write_with_prec<W, V>(dest: &mut W, v
     let len = dtoa::write(&mut buf[1..], value).map_err(|_| fmt::Error)?;
     let (result, notation) = restrict_prec(&mut buf[0..len + 1], prec);
     dest.write_str(str::from_utf8(result).unwrap())?;
     Ok(notation)
 }
 
 fn restrict_prec(buf: &mut [u8], prec: usize) -> (&[u8], Notation) {
     let len = buf.len();
-    debug_assert!(len <= BUFFER_SIZE, "dtoa may have changed its buffer size");
+    debug_assert!(len <= BUFFER_SIZE + 1, "dtoa may have changed its buffer size");
     // Put a leading zero to capture any carry.
     debug_assert!(buf[0] == b'\0', "Caller must prepare an empty byte for us");
     buf[0] = b'0';
     // Remove the sign for now. We will put it back at the end.
     let sign = match buf[1] {
         s @ b'+' | s @ b'-' => {
             buf[1] = b'0';
             Some(s)

--- a/toolkit/library/gtest/rust/Cargo.lock
+++ b/toolkit/library/gtest/rust/Cargo.lock
@@ -278,17 +278,17 @@ dependencies = [
 ]
 
 [[package]]
 name = "cssparser"
 version = "0.21.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cssparser-macros 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "dtoa-short 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "dtoa-short 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "itoa 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "matches 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "phf 0.7.21 (registry+https://github.com/rust-lang/crates.io-index)",
  "procedural-masquerade 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)",
  "smallvec 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "syn 0.11.11 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -384,17 +384,17 @@ dependencies = [
 
 [[package]]
 name = "dtoa"
 version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "dtoa-short"
-version = "0.3.0"
+version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "dtoa 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "dwrote"
 version = "0.4.0"
@@ -1661,17 +1661,17 @@ dependencies = [
 "checksum core-text 6.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "16ce16d9ed00181016c11ff48e561314bec92bfbce9fe48f319366618d4e5de6"
 "checksum cssparser 0.21.2 (registry+https://github.com/rust-lang/crates.io-index)" = "05012fcdbdeb4c6f59f67db47c1f879929339274a691ee1fb90c26b297783629"
 "checksum cssparser-macros 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "079adec4af52bb5275eadd004292028c79eb3c5f5b4ee8086a36d4197032f6df"
 "checksum darling 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "9861a8495606435477df581bc858ccf15a3469747edf175b94a4704fd9aaedac"
 "checksum darling_core 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1486a8b00b45062c997f767738178b43219133dd0c8c826cb811e60563810821"
 "checksum darling_macro 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8a86ec160aa0c3dd492dd4a14ec8104ad8f1a9400a820624db857998cc1f80f9"
 "checksum dbghelp-sys 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "97590ba53bcb8ac28279161ca943a924d1fd4a8fb3fa63302591647c4fc5b850"
 "checksum dtoa 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "09c3753c3db574d215cba4ea76018483895d7bff25a31b49ba45db21c48e50ab"
-"checksum dtoa-short 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "fe6f727b406462fd57c95fed84d1b0dbfb5f0136fcac005adba9ea0367c05cc8"
+"checksum dtoa-short 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "068d4026697c1a18f0b0bb8cfcad1b0c151b90d8edb9bf4c235ad68128920d1d"
 "checksum dwrote 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "36e3b27cd0b8a68e00f07e8d8e1e4f4d8a6b8b873290a734f63bd56d792d23e1"
 "checksum either 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "18785c1ba806c258137c937e44ada9ee7e69a37e3c72077542cd2f069d78562a"
 "checksum encoding_c 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "93ec52324ca72f423237a413ca0e1c60654c8b3d0934fcd5fd888508dfcc4ba7"
 "checksum encoding_rs 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "6f0a39f0e2f497d3c2e6a5529a0ec4fc640084fa401493c640421673471f8b72"
 "checksum env_logger 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)" = "ed39959122ea027670b704fb70539f4286ddf4a49eefede23bf0b4b2a069ec03"
 "checksum error-chain 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d9435d864e017c3c6afeac1654189b06cdb491cf2ff73dbf0d73b0f292f42ff8"
 "checksum euclid 0.15.2 (registry+https://github.com/rust-lang/crates.io-index)" = "50c9e4c3b53de731815135191f0b77969bea953211b8bbd3cc3083a7b10e190e"
 "checksum fnv 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)" = "6cc484842f1e2884faf56f529f960cc12ad8c71ce96cc7abba0a067c98fee344"

--- a/toolkit/library/rust/Cargo.lock
+++ b/toolkit/library/rust/Cargo.lock
@@ -276,17 +276,17 @@ dependencies = [
 ]
 
 [[package]]
 name = "cssparser"
 version = "0.21.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cssparser-macros 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "dtoa-short 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "dtoa-short 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "itoa 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "matches 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "phf 0.7.21 (registry+https://github.com/rust-lang/crates.io-index)",
  "procedural-masquerade 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)",
  "smallvec 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "syn 0.11.11 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -382,17 +382,17 @@ dependencies = [
 
 [[package]]
 name = "dtoa"
 version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "dtoa-short"
-version = "0.3.0"
+version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "dtoa 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "dwrote"
 version = "0.4.0"
@@ -1648,17 +1648,17 @@ dependencies = [
 "checksum core-text 6.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "16ce16d9ed00181016c11ff48e561314bec92bfbce9fe48f319366618d4e5de6"
 "checksum cssparser 0.21.2 (registry+https://github.com/rust-lang/crates.io-index)" = "05012fcdbdeb4c6f59f67db47c1f879929339274a691ee1fb90c26b297783629"
 "checksum cssparser-macros 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "079adec4af52bb5275eadd004292028c79eb3c5f5b4ee8086a36d4197032f6df"
 "checksum darling 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "9861a8495606435477df581bc858ccf15a3469747edf175b94a4704fd9aaedac"
 "checksum darling_core 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1486a8b00b45062c997f767738178b43219133dd0c8c826cb811e60563810821"
 "checksum darling_macro 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8a86ec160aa0c3dd492dd4a14ec8104ad8f1a9400a820624db857998cc1f80f9"
 "checksum dbghelp-sys 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "97590ba53bcb8ac28279161ca943a924d1fd4a8fb3fa63302591647c4fc5b850"
 "checksum dtoa 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "09c3753c3db574d215cba4ea76018483895d7bff25a31b49ba45db21c48e50ab"
-"checksum dtoa-short 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "fe6f727b406462fd57c95fed84d1b0dbfb5f0136fcac005adba9ea0367c05cc8"
+"checksum dtoa-short 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "068d4026697c1a18f0b0bb8cfcad1b0c151b90d8edb9bf4c235ad68128920d1d"
 "checksum dwrote 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "36e3b27cd0b8a68e00f07e8d8e1e4f4d8a6b8b873290a734f63bd56d792d23e1"
 "checksum either 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "18785c1ba806c258137c937e44ada9ee7e69a37e3c72077542cd2f069d78562a"
 "checksum encoding_c 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "93ec52324ca72f423237a413ca0e1c60654c8b3d0934fcd5fd888508dfcc4ba7"
 "checksum encoding_rs 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "6f0a39f0e2f497d3c2e6a5529a0ec4fc640084fa401493c640421673471f8b72"
 "checksum env_logger 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)" = "ed39959122ea027670b704fb70539f4286ddf4a49eefede23bf0b4b2a069ec03"
 "checksum error-chain 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d9435d864e017c3c6afeac1654189b06cdb491cf2ff73dbf0d73b0f292f42ff8"
 "checksum euclid 0.15.2 (registry+https://github.com/rust-lang/crates.io-index)" = "50c9e4c3b53de731815135191f0b77969bea953211b8bbd3cc3083a7b10e190e"
 "checksum fnv 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)" = "6cc484842f1e2884faf56f529f960cc12ad8c71ce96cc7abba0a067c98fee344"