Fixes for bad minimal-versions

Author: jonhoo

Cargo.toml

@@ -25,7 +25,7 @@ tls = ["rustls"]
 nom = "7"
 mysql_common = { version = "0.29.1", features = ["chrono"] }
 byteorder = "1"
-chrono = "0.4"
+chrono = "0.4.23"
 rustls = {version = "0.20.0", optional=true}
 
 [dev-dependencies]
@@ -41,3 +41,14 @@ native-tls = "0.2.8"
 
 [target.'cfg(unix)'.dev-dependencies]
 openssl = "0.10.38"
+
+# for minimal-versions
+[target.'cfg(any())'.dev-dependencies]
+flate2 = "1.0.13" # libz-sys 1.0.0 has problems
+tap = "1.0.1" # bitvec's wyz dependency needs this
+time = "0.3.1" # mysql_common needs this through chrono
+byteorder = "1.2.4" # mysql_common needs this
+rand = "0.3.14" # otherwise libc + winapi won't build
+async-trait = "0.1.9" # via tokio-postgtes via postgres
+twox-hash = "1.2.0" # via mysql
+bufstream = "0.1.3" # via mysql