Unexpected I/O log

*** System report during mod_ping_SUITE:server_ping_pong/1 in server_ping 2024-04-10 12:54:03.146 ***
=CRASH REPORT==== 10-Apr-2024::12:54:03.146120 ===
  crasher:
    initial call: gen_event:init_it/6
    pid: <0.69355.0>
    registered_name: []
    exception exit: {#Ref<0.588786523.1032060929.225228>,5031264,ok,
                     [{mod_ping_SUITE,server_ping_pong}],
                     []}
      in function  gen_event:terminate_server/4 (gen_event.erl, line 592)
    ancestors: [<0.69350.0>]
    message_queue_len: 0
    messages: []
    links: []
    dictionary: []
    trap_exit: true
    status: running
    heap_size: 10958
    stack_size: 28
    reductions: 4514
  neighbours:

*** System report during mod_ping_SUITE:server_ping_pong/1 in server_ping 2024-04-10 12:54:03.146 ***
=CRASH REPORT==== 10-Apr-2024::12:54:03.146151 ===
  crasher:
    initial call: gen_event:init_it/6
    pid: <0.69362.0>
    registered_name: []
    exception exit: {#Ref<0.588786523.1032060929.225228>,5031264,ok,
                     [{mod_ping_SUITE,server_ping_pong}],
                     []}
      in function  gen_event:terminate_server/4 (gen_event.erl, line 592)
    ancestors: [<0.69350.0>]
    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 2024-04-10 12:54:28.526 ***
=CRASH REPORT==== 10-Apr-2024::12:54:28.525967 ===
  crasher:
    initial call: gen_event:init_it/6
    pid: <0.69456.0>
    registered_name: []
    exception exit: {#Ref<0.588786523.1032060929.230241>,5033291,ok,
                     [{mod_ping_SUITE,server_ping_pong}],
                     []}
      in function  gen_event:terminate_server/4 (gen_event.erl, line 592)
    ancestors: [<0.69451.0>]
    message_queue_len: 0
    messages: []
    links: []
    dictionary: []
    trap_exit: true
    status: running
    heap_size: 6772
    stack_size: 28
    reductions: 5109
  neighbours:

*** System report during mod_ping_SUITE:server_ping_pong/1 in server_ping_kill 2024-04-10 12:54:28.526 ***
=CRASH REPORT==== 10-Apr-2024::12:54:28.525978 ===
  crasher:
    initial call: gen_event:init_it/6
    pid: <0.69463.0>
    registered_name: []
    exception exit: {#Ref<0.588786523.1032060929.230241>,5033291,ok,
                     [{mod_ping_SUITE,server_ping_pong}],
                     []}
      in function  gen_event:terminate_server/4 (gen_event.erl, line 592)
    ancestors: [<0.69451.0>]
    message_queue_len: 0
    messages: []
    links: []
    dictionary: []
    trap_exit: true
    status: running
    heap_size: 233
    stack_size: 28
    reductions: 210
  neighbours: