Removing old versions

Author: dbrrt

.github/workflows/rust-test.yml

@@ -24,7 +24,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        rust-version: ["1.70", "1.75", "stable", "beta", "nightly"]
+        rust-version: ["stable", "beta", "nightly"]
 
     steps:
     - name: Checkout code

rust/Cargo.toml

@@ -29,6 +29,7 @@ zerovec = "0.9"
 yoke = "0.6"
 zerofrom = "0.1"
 displaydoc = "0.2"
+synstructure = "0.12"
 
 [dev-dependencies]
 tokio-test = "0.4"