rust: pin memchr to ~2.3

2.4+ requires a newer version of Rust.

diff --git a/rust/Cargo.toml.in b/rust/Cargo.toml.in
index 1fdcdb5acf5d1a79139f820df888616911d7a3f1..c1b7e9d9ba5c2ad445366eb562e5648b6f844dc1 100644 (file)
--- a/rust/Cargo.toml.in
+++ b/rust/Cargo.toml.in
@@ -24,7 +24,7 @@ bitflags = "1.0"
 byteorder = "1.3"
 uuid = "0.8"
 crc = "1.8"
-memchr = "2.2"
+memchr = "~ 2.3"
 num = "0.2"
 num-derive = "0.2"
 num-traits = "0.2"