Fix import-postgres/run-postgres-vacuum failures being suppressed

We were only reporting failures for when the async task didn't finish.
We also need to report a failure for when the task finished, but
returned a non-zero exit code.

roles/matrix-postgres/tasks/import_postgres.yml

@@ -108,5 +108,5 @@
   async: "{{ postgres_import_wait_time }}"
   poll: 10
   register: matrix_postgres_import_postgres_command_result
-  failed_when: not matrix_postgres_import_postgres_command_result.finished
+  failed_when: not matrix_postgres_import_postgres_command_result.finished or matrix_postgres_import_postgres_command_result.rc != 0
   changed_when: matrix_postgres_import_postgres_command_result.finished and matrix_postgres_import_postgres_command_result.rc == 0

roles/matrix-postgres/tasks/run_vacuum.yml

@@ -79,7 +79,7 @@
   async: "{{ postgres_vacuum_wait_time }}"
   poll: 10
   register: matrix_postgres_synapse_vacuum_result
-  failed_when: not matrix_postgres_synapse_vacuum_result.finished
+  failed_when: not matrix_postgres_synapse_vacuum_result.finished or matrix_postgres_synapse_vacuum_result.rc != 0
   changed_when: matrix_postgres_synapse_vacuum_result.finished and matrix_postgres_synapse_vacuum_result.rc == 0
 
 # Intentionally show the results

roles/matrix-synapse/tasks/rust-synapse-compress-state/compress_room.yml

@@ -21,7 +21,7 @@
   async: "{{ matrix_synapse_rust_synapse_compress_state_compress_room_time }}"
   poll: 10
   register: matrix_synapse_rust_synapse_compress_state_compress_room_command_result
-  failed_when: not matrix_synapse_rust_synapse_compress_state_compress_room_command_result.finished
+  failed_when: not matrix_synapse_rust_synapse_compress_state_compress_room_command_result.finished or matrix_synapse_rust_synapse_compress_state_compress_room_command_result.rc != 0
   changed_when: matrix_synapse_rust_synapse_compress_state_compress_room_command_result.finished and matrix_synapse_rust_synapse_compress_state_compress_room_command_result.rc == 0
 
 - ansible.builtin.debug: