Bump caps to 0.5.1. Add x32 to CI for cross-builds and Tier 3 list in README

Author: nabijaczleweli

.cirrus.yml

@@ -157,6 +157,10 @@ task:
     - name: Linux s390x
       env:
         TARGET: s390x-unknown-linux-gnu
+    - name: Linux x32
+      env:
+        TARGET: x86_64-unknown-linux-gnux32
+        CHECK_TESTS: true
     - name: NetBSD x86_64
       env:
         TARGET: x86_64-unknown-netbsd

Cargo.toml

@@ -46,7 +46,7 @@ tempfile = "3.0.5"
 semver = "0.9.0"
 
 [target.'cfg(any(target_os = "android", target_os = "linux"))'.dev-dependencies]
-caps = "0.3.1"
+caps = "0.5.1"
 
 [target.'cfg(target_os = "freebsd")'.dev-dependencies]
 sysctl = "0.1"

README.md

@@ -83,6 +83,7 @@ Tier 2:
 Tier 3:
   * x86_64-fuchsia
   * x86_64-unknown-redox
+  * x86_64-unknown-linux-gnux32
 
 ## Usage