Unexpected I/O log

*** System report during mod_ping_SUITE:server_ping_pong/1 in server_ping 2024-02-26 22:46:04.749 ***
=CRASH REPORT==== 26-Feb-2024::22:46:04.749265 ===
  crasher:
    initial call: gen_event:init_it/6
    pid: <0.35452.0>
    registered_name: []
    exception exit: {#Ref<0.1363501864.1236008961.22336>,5031028,ok,
                     [{mod_ping_SUITE,server_ping_pong}],
                     []}
      in function  gen_event:terminate_server/4 (gen_event.erl, line 580)
    ancestors: [<0.35447.0>]
    message_queue_len: 0
    messages: []
    links: []
    dictionary: []
    trap_exit: true
    status: running
    heap_size: 10958
    stack_size: 28
    reductions: 4502
  neighbours:

*** System report during mod_ping_SUITE:server_ping_pong/1 in server_ping 2024-02-26 22:46:04.749 ***
=CRASH REPORT==== 26-Feb-2024::22:46:04.749270 ===
  crasher:
    initial call: gen_event:init_it/6
    pid: <0.35459.0>
    registered_name: []
    exception exit: {#Ref<0.1363501864.1236008961.22336>,5031028,ok,
                     [{mod_ping_SUITE,server_ping_pong}],
                     []}
      in function  gen_event:terminate_server/4 (gen_event.erl, line 580)
    ancestors: [<0.35447.0>]
    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 2024-02-26 22:46:30.121 ***
=CRASH REPORT==== 26-Feb-2024::22:46:30.121476 ===
  crasher:
    initial call: gen_event:init_it/6
    pid: <0.35553.0>
    registered_name: []
    exception exit: {#Ref<0.1363501864.1236008961.28020>,5029635,ok,
                     [{mod_ping_SUITE,server_ping_pong}],
                     []}
      in function  gen_event:terminate_server/4 (gen_event.erl, line 580)
    ancestors: [<0.35548.0>]
    message_queue_len: 0
    messages: []
    links: []
    dictionary: []
    trap_exit: true
    status: running
    heap_size: 10958
    stack_size: 28
    reductions: 4498
  neighbours:

*** System report during mod_ping_SUITE:server_ping_pong/1 in server_ping_kill 2024-02-26 22:46:30.121 ***
=CRASH REPORT==== 26-Feb-2024::22:46:30.121478 ===
  crasher:
    initial call: gen_event:init_it/6
    pid: <0.35560.0>
    registered_name: []
    exception exit: {#Ref<0.1363501864.1236008961.28020>,5029635,ok,
                     [{mod_ping_SUITE,server_ping_pong}],
                     []}
      in function  gen_event:terminate_server/4 (gen_event.erl, line 580)
    ancestors: [<0.35548.0>]
    message_queue_len: 0
    messages: []
    links: []
    dictionary: []
    trap_exit: true
    status: running
    heap_size: 233
    stack_size: 28
    reductions: 210
  neighbours: