Fail fast false + cosmetics

Signed-off-by: Francesco Guardiani <francescoguard@gmail.com>

.github/workflows/rust_tests.yml

@@ -10,9 +10,10 @@ on:
 
 jobs:
   build:
-    name: Run tests on ${{ matrix.toolchain }} ${{ matrix.target }}
+    name: ${{ matrix.toolchain }}/${{ matrix.target }}
     runs-on: ubuntu-latest
     strategy:
+      fail-fast: false
       matrix:
         toolchain:
           - stable
@@ -95,6 +96,7 @@ jobs:
     runs-on: ubuntu-latest
     needs: build
     strategy:
+      fail-fast: false
       matrix:
         target:
           - x86_64-unknown-linux-gnu