Unexpected I/O log

*** System report during mod_ping_SUITE:server_ping_pong/1 in server_ping 2022-03-03 10:34:33.205 ***
=CRASH REPORT==== 3-Mar-2022::10:34:33.204774 ===
  crasher:
    initial call: gen_event:init_it/6
    pid: <0.28358.0>
    registered_name: []
    exception exit: {#Ref<0.464009624.3337355266.105290>,3029637,ok,
                     [{mod_ping_SUITE,server_ping_pong}],
                     []}
      in function  gen_event:terminate_server/4 (gen_event.erl, line 397)
    ancestors: [<0.28351.0>]
    message_queue_len: 0
    messages: []
    links: []
    dictionary: []
    trap_exit: true
    status: running
    heap_size: 10958
    stack_size: 28
    reductions: 4307
  neighbours:

*** System report during mod_ping_SUITE:server_ping_pong/1 in server_ping 2022-03-03 10:34:33.205 ***
=CRASH REPORT==== 3-Mar-2022::10:34:33.204787 ===
  crasher:
    initial call: gen_event:init_it/6
    pid: <0.28365.0>
    registered_name: []
    exception exit: {#Ref<0.464009624.3337355266.105290>,3029637,ok,
                     [{mod_ping_SUITE,server_ping_pong}],
                     []}
      in function  gen_event:terminate_server/4 (gen_event.erl, line 397)
    ancestors: [<0.28351.0>]
    message_queue_len: 0
    messages: []
    links: []
    dictionary: []
    trap_exit: true
    status: running
    heap_size: 376
    stack_size: 28
    reductions: 239
  neighbours:

*** System report during mod_ping_SUITE:server_ping_pong/1 in server_ping_kill 2022-03-03 10:34:49.601 ***
=CRASH REPORT==== 3-Mar-2022::10:34:49.601140 ===
  crasher:
    initial call: gen_event:init_it/6
    pid: <0.28488.0>
    registered_name: []
    exception exit: {#Ref<0.464009624.3337617409.70680>,3032982,ok,
                     [{mod_ping_SUITE,server_ping_pong}],
                     []}
      in function  gen_event:terminate_server/4 (gen_event.erl, line 397)
    ancestors: [<0.28474.0>]
    message_queue_len: 0
    messages: []
    links: []
    dictionary: []
    trap_exit: true
    status: running
    heap_size: 376
    stack_size: 28
    reductions: 239
  neighbours:

*** System report during mod_ping_SUITE:server_ping_pong/1 in server_ping_kill 2022-03-03 10:34:49.601 ***
=CRASH REPORT==== 3-Mar-2022::10:34:49.601139 ===
  crasher:
    initial call: gen_event:init_it/6
    pid: <0.28481.0>
    registered_name: []
    exception exit: {#Ref<0.464009624.3337617409.70680>,3032982,ok,
                     [{mod_ping_SUITE,server_ping_pong}],
                     []}
      in function  gen_event:terminate_server/4 (gen_event.erl, line 397)
    ancestors: [<0.28474.0>]
    message_queue_len: 0
    messages: []
    links: []
    dictionary: []
    trap_exit: true
    status: running
    heap_size: 10958
    stack_size: 28
    reductions: 4342
  neighbours: