[utils] Warn on runtime_error when waiting for SSH

Transitioning away from generic runtime errors to signal normal SSH
waiting conditions by warning when they are caught, but still retrying
for the time being.

src/utils/utils.cpp

@@ -79,10 +79,11 @@ QString find_autostart_target(const QString& subdir, const QString& autostart_fi
 }
 
 template <typename ExceptionT>
-mp::utils::TimeoutAction log_and_retry(const ExceptionT& e, const mp::VirtualMachine* vm)
+mp::utils::TimeoutAction log_and_retry(const ExceptionT& e, const mp::VirtualMachine* vm,
+                                       mpl::Level log_level = mpl::Level::trace)
 {
     assert(vm);
-    mpl::log(mpl::Level::trace, vm->vm_name, e.what());
+    mpl::log(log_level, vm->vm_name, e.what());
     return mp::utils::TimeoutAction::retry;
 };
 } // namespace
@@ -348,6 +349,10 @@ void mp::utils::wait_until_ssh_up(VirtualMachine* virtual_machine, std::chrono::
         {
             return log_and_retry(e, virtual_machine);
         }
+        catch (const std::runtime_error& e) // transitioning away from catching generic runtime errors
+        {                                   // TODO remove once we're confident this is an anomaly
+            return log_and_retry(e, virtual_machine, mpl::Level::warning);
+        }
     };
 
     auto on_timeout = [virtual_machine] {