update rust/cargo

Cargo.lock

@@ -456,7 +456,6 @@ source = "git+https://github.com/smoltcp-rs/smoltcp.git#bdfa44270e9c59b3095b555c
 dependencies = [
  "bitflags",
  "byteorder",
- "log",
  "managed",
 ]
 

Cargo.toml

@@ -11,9 +11,8 @@ cortex-m = "0.6.2"
 cortex-m-rt = "0.6.12"
 embedded-hal = "0.2.4"
 stm32h7xx-hal = {version = "0.7.1", features = [ "stm32h743v", "rt", "unproven", "ethernet", "phy_lan8742a" ] }
-smoltcp = { version = "0.6.0", default-features = false, features = [ "ethernet", "proto-ipv4", "proto-ipv6", "socket-tcp", "log" ] }
+smoltcp = { version = "0.6.0", default-features = false, features = [ "ethernet", "proto-ipv4", "proto-ipv6", "socket-tcp" ] }
 nb = "1.0.0"
-
 embedded-nal = "0.1.0"
 minimq = { git = "https://github.com/quartiq/minimq.git", branch = "master" }
 heapless = "0.5.6"