Unexpected I/O log

*** System report during mod_ping_SUITE:server_ping_pong/1 in server_ping 2024-04-15 16:56:43.794 ***
=CRASH REPORT==== 15-Apr-2024::16:56:43.794407 ===
  crasher:
    initial call: gen_event:init_it/6
    pid: <0.3803.2>
    registered_name: []
    exception exit: {#Ref<0.1876467631.2722365441.238495>,5037872,ok,
                     [{mod_ping_SUITE,server_ping_pong}],
                     []}
      in function  gen_event:terminate_server/4 (gen_event.erl, line 580)
    ancestors: [<0.3798.2>]
    message_queue_len: 0
    messages: []
    links: []
    dictionary: []
    trap_exit: true
    status: running
    heap_size: 10958
    stack_size: 28
    reductions: 4671
  neighbours:

*** System report during mod_ping_SUITE:server_ping_pong/1 in server_ping 2024-04-15 16:56:43.795 ***
=CRASH REPORT==== 15-Apr-2024::16:56:43.794453 ===
  crasher:
    initial call: gen_event:init_it/6
    pid: <0.3810.2>
    registered_name: []
    exception exit: {#Ref<0.1876467631.2722365441.238495>,5037872,ok,
                     [{mod_ping_SUITE,server_ping_pong}],
                     []}
      in function  gen_event:terminate_server/4 (gen_event.erl, line 580)
    ancestors: [<0.3798.2>]
    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 2024-04-15 16:57:09.309 ***
=CRASH REPORT==== 15-Apr-2024::16:57:09.309018 ===
  crasher:
    initial call: gen_event:init_it/6
    pid: <0.3903.2>
    registered_name: []
    exception exit: {#Ref<0.1876467631.2721841154.175640>,5050460,ok,
                     [{mod_ping_SUITE,server_ping_pong}],
                     []}
      in function  gen_event:terminate_server/4 (gen_event.erl, line 580)
    ancestors: [<0.3898.2>]
    message_queue_len: 0
    messages: []
    links: []
    dictionary: []
    trap_exit: true
    status: running
    heap_size: 6772
    stack_size: 28
    reductions: 5299
  neighbours:

*** System report during mod_ping_SUITE:server_ping_pong/1 in server_ping_kill 2024-04-15 16:57:09.309 ***
=CRASH REPORT==== 15-Apr-2024::16:57:09.309030 ===
  crasher:
    initial call: gen_event:init_it/6
    pid: <0.3911.2>
    registered_name: []
    exception exit: {#Ref<0.1876467631.2721841154.175640>,5050460,ok,
                     [{mod_ping_SUITE,server_ping_pong}],
                     []}
      in function  gen_event:terminate_server/4 (gen_event.erl, line 580)
    ancestors: [<0.3898.2>]
    message_queue_len: 0
    messages: []
    links: []
    dictionary: []
    trap_exit: true
    status: running
    heap_size: 233
    stack_size: 28
    reductions: 210
  neighbours: