fix cargo test

cargo doesn't like pkg names that start with numbers now apparently and the the tmpdirs we used were likely to be that. So explicitly set a name.

projects/rust-lang.org/cargo/package.yml

@@ -54,7 +54,7 @@ build:
 
 test:
   script: |
-    cargo init .
+    cargo init . --name xyz_tea_fixture
     echo 'fn main() {println!("Hello World!");}' >src/main.rs
     cargo clippy
     cargo run