Update to rust 1.51 with rustup, for zeroconf 0.4 which requires const generics.

Cargo.lock

@@ -2634,9 +2634,9 @@ dependencies = [
 
 [[package]]
 name = "zerocopy"
-version = "0.3.0"
+version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6580539ad917b7c026220c4b3f2c08d52ce54d6ce0dc491e66002e35388fab46"
+checksum = "ab9379fdcbd16727ce6f7f098154c35d303f092ba4c8e20719f584ad29b8aa47"
 dependencies = [
  "byteorder",
  "zerocopy-derive",

Cargo.toml

@@ -24,7 +24,7 @@ dirs = "3.0"
 indoc = "1.0"
 combine = "4.5"
 sled = "0.34"
-zerocopy = "0.3"
+zerocopy = "0.4"
 byteorder = "1.3"
 futures = "0.3"
 memmem = "0.1"

Dockerfile

@@ -1,8 +1,9 @@
 # Builder image with development dependencies.
 FROM bougyman/voidlinux:glibc as builder
 RUN xbps-install -Syu
-RUN xbps-install -Sy base-devel rust cargo cmake wget gnupg
+RUN xbps-install -Sy base-devel rustup cargo cmake wget gnupg
 RUN xbps-install -Sy openssl-devel libstdc++-devel
+RUN rustup-init -qy
 
 # Install tini for signal processing and zombie killing
 ENV TINI_VERSION v0.19.0
@@ -16,7 +17,7 @@ RUN chmod +x /usr/local/bin/tini
 RUN mkdir -p /root/src
 WORKDIR /root/src
 ADD . ./
-RUN cargo build --release
+RUN . /root/.cargo/env && cargo build --release
 
 # Final image
 FROM bougyman/voidlinux:tiny