Unexpected I/O log

*** System report during mod_ping_SUITE:server_ping_pong/1 in server_ping 2024-01-15 12:06:03.438 ***
=CRASH REPORT==== 15-Jan-2024::12:06:03.438342 ===
  crasher:
    initial call: gen_event:init_it/6
    pid: <0.2623.1>
    registered_name: []
    exception exit: {#Ref<0.1446065327.353370113.259524>,5035494,ok,
                     [{mod_ping_SUITE,server_ping_pong}],
                     []}
      in function  gen_event:terminate_server/4 (gen_event.erl, line 580)
    ancestors: [<0.2618.1>]
    message_queue_len: 0
    messages: []
    links: []
    dictionary: []
    trap_exit: true
    status: running
    heap_size: 10958
    stack_size: 28
    reductions: 4575
  neighbours:

*** System report during mod_ping_SUITE:server_ping_pong/1 in server_ping 2024-01-15 12:06:03.438 ***
=CRASH REPORT==== 15-Jan-2024::12:06:03.438350 ===
  crasher:
    initial call: gen_event:init_it/6
    pid: <0.2630.1>
    registered_name: []
    exception exit: {#Ref<0.1446065327.353370113.259524>,5035494,ok,
                     [{mod_ping_SUITE,server_ping_pong}],
                     []}
      in function  gen_event:terminate_server/4 (gen_event.erl, line 580)
    ancestors: [<0.2618.1>]
    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 2024-01-15 12:06:28.844 ***
=CRASH REPORT==== 15-Jan-2024::12:06:28.844752 ===
  crasher:
    initial call: gen_event:init_it/6
    pid: <0.2730.1>
    registered_name: []
    exception exit: {#Ref<0.1446065327.353632257.1581>,5038185,ok,
                     [{mod_ping_SUITE,server_ping_pong}],
                     []}
      in function  gen_event:terminate_server/4 (gen_event.erl, line 580)
    ancestors: [<0.2718.1>]
    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 2024-01-15 12:06:28.845 ***
=CRASH REPORT==== 15-Jan-2024::12:06:28.844752 ===
  crasher:
    initial call: gen_event:init_it/6
    pid: <0.2723.1>
    registered_name: []
    exception exit: {#Ref<0.1446065327.353632257.1581>,5038185,ok,
                     [{mod_ping_SUITE,server_ping_pong}],
                     []}
      in function  gen_event:terminate_server/4 (gen_event.erl, line 580)
    ancestors: [<0.2718.1>]
    message_queue_len: 0
    messages: []
    links: []
    dictionary: []
    trap_exit: true
    status: running
    heap_size: 10958
    stack_size: 28
    reductions: 4593
  neighbours: