Unexpected I/O log

*** System report during mod_ping_SUITE:server_ping_pong/1 in server_ping 2024-04-23 09:03:52.348 ***
=CRASH REPORT==== 23-Apr-2024::09:03:52.347966 ===
  crasher:
    initial call: gen_event:init_it/6
    pid: <0.2716.1>
    registered_name: []
    exception exit: {#Ref<0.3447338443.2555379713.38267>,5043054,ok,
                     [{mod_ping_SUITE,server_ping_pong}],
                     []}
      in function  gen_event:terminate_server/4 (gen_event.erl, line 580)
    ancestors: [<0.2711.1>]
    message_queue_len: 0
    messages: []
    links: []
    dictionary: []
    trap_exit: true
    status: running
    heap_size: 6772
    stack_size: 28
    reductions: 5289
  neighbours:

*** System report during mod_ping_SUITE:server_ping_pong/1 in server_ping 2024-04-23 09:03:52.348 ***
=CRASH REPORT==== 23-Apr-2024::09:03:52.347985 ===
  crasher:
    initial call: gen_event:init_it/6
    pid: <0.2723.1>
    registered_name: []
    exception exit: {#Ref<0.3447338443.2555379713.38267>,5043054,ok,
                     [{mod_ping_SUITE,server_ping_pong}],
                     []}
      in function  gen_event:terminate_server/4 (gen_event.erl, line 580)
    ancestors: [<0.2711.1>]
    message_queue_len: 0
    messages: []
    links: []
    dictionary: []
    trap_exit: true
    status: running
    heap_size: 233
    stack_size: 28
    reductions: 220
  neighbours:

*** System report during mod_ping_SUITE:server_ping_pong/1 in server_ping_kill 2024-04-23 09:04:17.746 ***
=CRASH REPORT==== 23-Apr-2024::09:04:17.746671 ===
  crasher:
    initial call: gen_event:init_it/6
    pid: <0.2817.1>
    registered_name: []
    exception exit: {#Ref<0.3447338443.2555379713.43334>,5031571,ok,
                     [{mod_ping_SUITE,server_ping_pong}],
                     []}
      in function  gen_event:terminate_server/4 (gen_event.erl, line 580)
    ancestors: [<0.2812.1>]
    message_queue_len: 0
    messages: []
    links: []
    dictionary: []
    trap_exit: true
    status: running
    heap_size: 10958
    stack_size: 28
    reductions: 4623
  neighbours:

*** System report during mod_ping_SUITE:server_ping_pong/1 in server_ping_kill 2024-04-23 09:04:17.747 ***
=CRASH REPORT==== 23-Apr-2024::09:04:17.746673 ===
  crasher:
    initial call: gen_event:init_it/6
    pid: <0.2824.1>
    registered_name: []
    exception exit: {#Ref<0.3447338443.2555379713.43334>,5031571,ok,
                     [{mod_ping_SUITE,server_ping_pong}],
                     []}
      in function  gen_event:terminate_server/4 (gen_event.erl, line 580)
    ancestors: [<0.2812.1>]
    message_queue_len: 0
    messages: []
    links: []
    dictionary: []
    trap_exit: true
    status: running
    heap_size: 233
    stack_size: 28
    reductions: 220
  neighbours: