Unexpected I/O log

*** System report during mod_ping_SUITE:server_ping_pong/1 in server_ping 2024-03-18 13:06:19.987 ***
=CRASH REPORT==== 18-Mar-2024::13:06:19.987162 ===
  crasher:
    initial call: gen_event:init_it/6
    pid: <0.68890.0>
    registered_name: []
    exception exit: {#Ref<0.2721660540.3953917953.1454>,5048253,ok,
                     [{mod_ping_SUITE,server_ping_pong}],
                     []}
      in function  gen_event:terminate_server/4 (gen_event.erl, line 580)
    ancestors: [<0.68885.0>]
    message_queue_len: 0
    messages: []
    links: []
    dictionary: []
    trap_exit: true
    status: running
    heap_size: 6772
    stack_size: 28
    reductions: 5236
  neighbours:

*** System report during mod_ping_SUITE:server_ping_pong/1 in server_ping 2024-03-18 13:06:19.987 ***
=CRASH REPORT==== 18-Mar-2024::13:06:19.987193 ===
  crasher:
    initial call: gen_event:init_it/6
    pid: <0.68897.0>
    registered_name: []
    exception exit: {#Ref<0.2721660540.3953917953.1454>,5048253,ok,
                     [{mod_ping_SUITE,server_ping_pong}],
                     []}
      in function  gen_event:terminate_server/4 (gen_event.erl, line 580)
    ancestors: [<0.68885.0>]
    message_queue_len: 0
    messages: []
    links: []
    dictionary: []
    trap_exit: true
    status: running
    heap_size: 233
    stack_size: 28
    reductions: 210
  neighbours:

*** System report during mod_ping_SUITE:server_ping_pong/1 in server_ping_kill 2024-03-18 13:06:45.712 ***
=CRASH REPORT==== 18-Mar-2024::13:06:45.712230 ===
  crasher:
    initial call: gen_event:init_it/6
    pid: <0.68990.0>
    registered_name: []
    exception exit: {#Ref<0.2721660540.3953131522.235433>,5047277,ok,
                     [{mod_ping_SUITE,server_ping_pong}],
                     []}
      in function  gen_event:terminate_server/4 (gen_event.erl, line 580)
    ancestors: [<0.68985.0>]
    message_queue_len: 0
    messages: []
    links: []
    dictionary: []
    trap_exit: true
    status: running
    heap_size: 10958
    stack_size: 28
    reductions: 4914
  neighbours:

*** System report during mod_ping_SUITE:server_ping_pong/1 in server_ping_kill 2024-03-18 13:06:45.712 ***
=CRASH REPORT==== 18-Mar-2024::13:06:45.712239 ===
  crasher:
    initial call: gen_event:init_it/6
    pid: <0.68997.0>
    registered_name: []
    exception exit: {#Ref<0.2721660540.3953131522.235433>,5047277,ok,
                     [{mod_ping_SUITE,server_ping_pong}],
                     []}
      in function  gen_event:terminate_server/4 (gen_event.erl, line 580)
    ancestors: [<0.68985.0>]
    message_queue_len: 0
    messages: []
    links: []
    dictionary: []
    trap_exit: true
    status: running
    heap_size: 233
    stack_size: 28
    reductions: 210
  neighbours: