Drop FreeBSD 10 and add FreeBSD 13 image on Cirrus CI

Author: JohnTitor

.cirrus.yml

@@ -1,40 +1,41 @@
 task:
-  name: nightly x86_64-unknown-freebsd-10
+  name: stable x86_64-unknown-freebsd-11
   freebsd_instance:
-    image: freebsd-10-4-release-amd64
+    image: freebsd-11-4-release-amd64
   setup_script:
     - pkg install -y curl
     - curl https://sh.rustup.rs -sSf --output rustup.sh
-    - sh rustup.sh --default-toolchain nightly -y --profile=minimal
+    - sh rustup.sh -y --profile=minimal
     - . $HOME/.cargo/env
-    - rustup default nightly
+    - rustup default stable
   test_script:
     - . $HOME/.cargo/env
     - LIBC_CI=1 sh ci/run.sh x86_64-unknown-freebsd
+    - sh ci/run.sh x86_64-unknown-freebsd
 
 task:
-  name: stable x86_64-unknown-freebsd-11
+  name: nightly x86_64-unknown-freebsd-12
   freebsd_instance:
-    image: freebsd-11-4-release-amd64
+    image: freebsd-12-1-release-amd64
   setup_script:
     - pkg install -y curl
     - curl https://sh.rustup.rs -sSf --output rustup.sh
-    - sh rustup.sh -y --profile=minimal
+    - sh rustup.sh --default-toolchain nightly -y --profile=minimal
     - . $HOME/.cargo/env
-    - rustup default stable
+    - rustup default nightly
   test_script:
     - . $HOME/.cargo/env
     - LIBC_CI=1 sh ci/run.sh x86_64-unknown-freebsd
     - sh ci/run.sh x86_64-unknown-freebsd
 
 task:
-  name: nightly x86_64-unknown-freebsd-12
+  name: nightly x86_64-unknown-freebsd-13
   freebsd_instance:
-    image: freebsd-12-1-release-amd64
+    image: freebsd-13-0-current-amd64-v20201001
   setup_script:
     - pkg install -y curl
     - curl https://sh.rustup.rs -sSf --output rustup.sh
-    - sh rustup.sh --default-toolchain nightly -y --profile=minimal
+    - sh rustup.sh -y --profile=minimal
     - . $HOME/.cargo/env
     - rustup default nightly
   test_script: