Upgrade minimum Rust version to 1.70.0. (#1198)

.github/workflows/ci.yml

@@ -46,7 +46,7 @@ jobs:
         # Test against the oldest supported version.
         # Test against beta Rust to get early warning of any problems that might occur with the upcoming Rust release.
         # Order: oldest Rust to newest Rust.
-        rust: [1.65.0, stable, beta]
+        rust: [1.70.0, stable, beta]
 
         # Test with no features, default features ("") and all except UI tests.
         # Order: fewest features to most features.
@@ -66,7 +66,7 @@ jobs:
     runs-on: ubuntu-20.04
     strategy:
       matrix:
-        rust: [1.65.0, stable, beta]
+        rust: [1.70.0, stable, beta]
         features: ["hsm", "hsm,hsm-tests-kmip"]
     steps:
     - name: Checkout repository
@@ -112,7 +112,7 @@ jobs:
     runs-on: ubuntu-20.04
     strategy:
       matrix:
-        rust: [1.65.0, stable, beta]
+        rust: [1.70.0, stable, beta]
         features: ["hsm,hsm-tests-pkcs11"]
     steps:
     - name: Checkout repository

Cargo.toml

@@ -3,7 +3,7 @@
 name = "krill"
 version = "0.14.5-dev"
 edition = "2018"
-rust-version = "1.65"
+rust-version = "1.70"
 authors = ["NLnet Labs <rpki-team@nlnetlabs.nl>"]
 description = "Resource Public Key Infrastructure (RPKI) daemon"
 homepage = "https://www.nlnetlabs.nl/projects/rpki/krill/"