Update MSRV to 1.56 and current version to 1.59

This is needed to support Rust 2021 edition required by the latest versions of `ed25519` and `image` crates.

.github/workflows/ci.yml

@@ -77,19 +77,19 @@ jobs:
         include:
           # Currently used Rust version, same as in `rust-toolchain` file.
           - os: ubuntu-latest
-            rust: 1.54.0
+            rust: 1.59.0
             python: 3.9
           - os: windows-latest
-            rust: 1.54.0
+            rust: 1.59.0
             python: false # Python bindings compilation on Windows is not supported.
 
-          # Minimum Supported Rust Version = 1.51.0
+          # Minimum Supported Rust Version = 1.56.0
           #
           # Minimum Supported Python Version = 3.7
           # This is the minimum version for which manylinux Python wheels are
           # built.
           - os: ubuntu-latest
-            rust: 1.51.0
+            rust: 1.56.0
             python: 3.7
     runs-on: ${{ matrix.os }}
     steps:

Cargo.toml

@@ -2,9 +2,9 @@
 name = "deltachat"
 version = "1.76.0"
 authors = ["Delta Chat Developers (ML) <delta@codespeak.net>"]
-edition = "2018"
+edition = "2021"
 license = "MPL-2.0"
-resolver = "2"
+rust-version = "1.56"
 
 [profile.dev]
 debug = 0

rust-toolchain

@@ -1 +1 @@
-1.54.0
+1.59.0

scripts/docker-coredeps-arm64/deps/build_rust.sh

@@ -8,7 +8,7 @@ set -e -x
 #
 # Avoid using rustup here as it depends on reading /proc/self/exe and
 # has problems running under QEMU.
-RUST_VERSION=1.54.0
+RUST_VERSION=1.59.0
 
 curl "https://static.rust-lang.org/dist/rust-${RUST_VERSION}-$(uname -m)-unknown-linux-gnu.tar.gz" | tar xz
 cd "rust-${RUST_VERSION}-$(uname -m)-unknown-linux-gnu"

scripts/docker-coredeps/deps/build_rust.sh

@@ -8,7 +8,7 @@ set -e -x
 #
 # Avoid using rustup here as it depends on reading /proc/self/exe and
 # has problems running under QEMU.
-RUST_VERSION=1.54.0
+RUST_VERSION=1.59.0
 
 curl "https://static.rust-lang.org/dist/rust-${RUST_VERSION}-$(uname -m)-unknown-linux-gnu.tar.gz" | tar xz
 cd "rust-${RUST_VERSION}-$(uname -m)-unknown-linux-gnu"