Unexpected I/O log

*** System report during mod_ping_SUITE:server_ping_pong/1 in server_ping 2024-04-23 23:31:07.420 ***
=CRASH REPORT==== 23-Apr-2024::23:31:07.419914 ===
  crasher:
    initial call: gen_event:init_it/6
    pid: <0.64068.0>
    registered_name: []
    exception exit: {#Ref<0.3853204714.810549249.140901>,5031635,ok,
                     [{mod_ping_SUITE,server_ping_pong}],
                     []}
      in function  gen_event:terminate_server/4 (gen_event.erl, line 592)
    ancestors: [<0.64063.0>]
    message_queue_len: 0
    messages: []
    links: []
    dictionary: []
    trap_exit: true
    status: running
    heap_size: 6772
    stack_size: 28
    reductions: 5219
  neighbours:

*** System report during mod_ping_SUITE:server_ping_pong/1 in server_ping 2024-04-23 23:31:07.420 ***
=CRASH REPORT==== 23-Apr-2024::23:31:07.419961 ===
  crasher:
    initial call: gen_event:init_it/6
    pid: <0.64075.0>
    registered_name: []
    exception exit: {#Ref<0.3853204714.810549249.140901>,5031635,ok,
                     [{mod_ping_SUITE,server_ping_pong}],
                     []}
      in function  gen_event:terminate_server/4 (gen_event.erl, line 592)
    ancestors: [<0.64063.0>]
    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 2024-04-23 23:31:32.811 ***
=CRASH REPORT==== 23-Apr-2024::23:31:32.811074 ===
  crasher:
    initial call: gen_event:init_it/6
    pid: <0.64169.0>
    registered_name: []
    exception exit: {#Ref<0.3853204714.810549249.147351>,5032833,ok,
                     [{mod_ping_SUITE,server_ping_pong}],
                     []}
      in function  gen_event:terminate_server/4 (gen_event.erl, line 592)
    ancestors: [<0.64164.0>]
    message_queue_len: 0
    messages: []
    links: []
    dictionary: []
    trap_exit: true
    status: running
    heap_size: 6772
    stack_size: 28
    reductions: 5220
  neighbours:

*** System report during mod_ping_SUITE:server_ping_pong/1 in server_ping_kill 2024-04-23 23:31:32.811 ***
=CRASH REPORT==== 23-Apr-2024::23:31:32.811078 ===
  crasher:
    initial call: gen_event:init_it/6
    pid: <0.64176.0>
    registered_name: []
    exception exit: {#Ref<0.3853204714.810549249.147351>,5032833,ok,
                     [{mod_ping_SUITE,server_ping_pong}],
                     []}
      in function  gen_event:terminate_server/4 (gen_event.erl, line 592)
    ancestors: [<0.64164.0>]
    message_queue_len: 0
    messages: []
    links: []
    dictionary: []
    trap_exit: true
    status: running
    heap_size: 233
    stack_size: 28
    reductions: 210
  neighbours: