Handle non-TTY `wandb.errors.UsageError` (#5839)

utils/loggers/__init__.py

@@ -24,7 +24,10 @@ try:
 
     assert hasattr(wandb, '__version__')  # verify package import not local dir
     if pkg.parse_version(wandb.__version__) >= pkg.parse_version('0.12.2') and RANK in [0, -1]:
-        wandb_login_success = wandb.login(timeout=30)
+        try:
+            wandb_login_success = wandb.login(timeout=30)
+        except wandb.errors.UsageError:  # known non-TTY terminal issue
+            wandb_login_success = False
         if not wandb_login_success:
             wandb = None
 except (ImportError, AssertionError):