details.set_len(entry.m_cDetails as usize);

thread '<unnamed>' (18460) panicked at /rustc/ed61e7d7e242494fb7057f2657300d9e77bb4fcb\library\alloc\src\vec\mod.rs:2013:9:
unsafe precondition(s) violated: Vec::set_len requires that new_len <= capacity()

This indicates a bug in the program. This Undefined Behavior check is optional, and cannot be relied on for safety.
stack backtrace:
   0:     0x7ff78c77d662 - std::backtrace_rs::backtrace::win64::trace
                               at /rustc/ed61e7d7e242494fb7057f2657300d9e77bb4fcb/library\std\src\..\..\backtrace\src\backtrace\win64.rs:85
   1:     0x7ff78c77d662 - std::backtrace_rs::backtrace::trace_unsynchronized
                               at /rustc/ed61e7d7e242494fb7057f2657300d9e77bb4fcb/library\std\src\..\..\backtrace\src\backtrace\mod.rs:66
   2:     0x7ff78c77d662 - std::sys::backtrace::_print_fmt
                               at /rustc/ed61e7d7e242494fb7057f2657300d9e77bb4fcb/library\std\src\sys\backtrace.rs:66
   3:     0x7ff78c77d662 - std::sys::backtrace::impl$0::print::impl$0::fmt
                               at /rustc/ed61e7d7e242494fb7057f2657300d9e77bb4fcb/library\std\src\sys\backtrace.rs:39
   4:     0x7ff78c78a66a - core::fmt::rt::Argument::fmt
                               at /rustc/ed61e7d7e242494fb7057f2657300d9e77bb4fcb/library\core\src\fmt\rt.rs:173
   5:     0x7ff78c78a66a - core::fmt::write
                               at /rustc/ed61e7d7e242494fb7057f2657300d9e77bb4fcb/library\core\src\fmt\mod.rs:1468
   6:     0x7ff78c757fae - std::io::default_write_fmt
                               at /rustc/ed61e7d7e242494fb7057f2657300d9e77bb4fcb/library\std\src\io\mod.rs:639
   7:     0x7ff78c757fae - std::io::Write::write_fmt<std::sys::stdio::windows::Stderr>
                               at /rustc/ed61e7d7e242494fb7057f2657300d9e77bb4fcb/library\std\src\io\mod.rs:1954
   8:     0x7ff78c76a425 - std::sys::backtrace::BacktraceLock::print
                               at /rustc/ed61e7d7e242494fb7057f2657300d9e77bb4fcb/library\std\src\sys\backtrace.rs:42
   9:     0x7ff78c76fbc9 - std::panicking::default_hook::closure$0
                               at /rustc/ed61e7d7e242494fb7057f2657300d9e77bb4fcb/library\std\src\panicking.rs:301
  10:     0x7ff78c76f9b8 - std::panicking::default_hook
                               at /rustc/ed61e7d7e242494fb7057f2657300d9e77bb4fcb/library\std\src\panicking.rs:328
  11:     0x7ff78c77050b - std::panicking::panic_with_hook
                               at /rustc/ed61e7d7e242494fb7057f2657300d9e77bb4fcb/library\std\src\panicking.rs:834
  12:     0x7ff78c7702a2 - std::panicking::panic_handler::closure$0
                               at /rustc/ed61e7d7e242494fb7057f2657300d9e77bb4fcb/library\std\src\panicking.rs:700
  13:     0x7ff78c76a62f - std::sys::backtrace::__rust_end_short_backtrace<std::panicking::panic_handler::closure_env$0,never$>
                               at /rustc/ed61e7d7e242494fb7057f2657300d9e77bb4fcb/library\std\src\sys\backtrace.rs:174
  14:     0x7ff78c754afe - std::panicking::panic_handler
                               at /rustc/ed61e7d7e242494fb7057f2657300d9e77bb4fcb/library\std\src\panicking.rs:698
  15:     0x7ff78c8febd5 - core::panicking::panic_nounwind_fmt
                               at /rustc/ed61e7d7e242494fb7057f2657300d9e77bb4fcb/library\core\src\intrinsics\mod.rs:2435
  16:     0x7ff78b9a1dc7 - alloc::vec::impl$1::set_len::precondition_check
                               at /rustc/ed61e7d7e242494fb7057f2657300d9e77bb4fcb\library\core\src\ub_checks.rs:72
  17:     0x7ff78bc1fce8 - alloc::vec::Vec<i32,alloc::alloc::Global>::set_len<i32,alloc::alloc::Global>
                               at /rustc/ed61e7d7e242494fb7057f2657300d9e77bb4fcb\library\alloc\src\vec\mod.rs:2013
  18:     0x7ff78b9d71dd - steamworks::user_stats::impl$0::download_leaderboard_entries::closure$0<steamworks::ClientManager,app::fetch_leaderboard::closure_env$3>
                               at C:\Users\andrei\.cargo\git\checkouts\steamworks-rs-ff4e63136d772f64\a0b0f97\src\user_stats.rs:209
  19:     0x7ff78baa620e - steamworks::callback::register_call_result::closure$0<steamworks_sys::LeaderboardScoresDownloaded_t,steamworks::user_stats::impl$0::download_leaderboard_entries::closure_env$0<steamworks::ClientManager,app::fetch_leaderboard::closure_env$3>,steamworks::Cli
                               at C:\Users\andrei\.cargo\git\checkouts\steamworks-rs-ff4e63136d772f64\a0b0f97\src\callback.rs:72
  20:     0x7ff78baaa25a - core::ops::function::FnOnce::call_once<steamworks::callback::register_call_result::closure_env$0<steamworks_sys::LeaderboardScoresDownloaded_t,steamworks::user_stats::impl$0::download_leaderboard_entries::closure_env$0<steamworks::ClientManager,app::fetch_
                               at /rustc/ed61e7d7e242494fb7057f2657300d9e77bb4fcb\library\core\src\ops\function.rs:250
  21:     0x7ff78bc02974 - alloc::boxed::impl$29::call_once<tuple$<ptr_mut$<core::ffi::c_void>,bool>,dyn$<core::ops::function::FnOnce<tuple$<ptr_mut$<core::ffi::c_void>,bool>,assoc$<Output,tuple$<> > >,core::marker::Send>,alloc::alloc::Global>
                               at /rustc/ed61e7d7e242494fb7057f2657300d9e77bb4fcb\library\alloc\src\boxed.rs:1985
  22:     0x7ff78ba2088b - steamworks::Client<steamworks::ClientManager>::run_callbacks<steamworks::ClientManager>
                               at C:\Users\andrei\.cargo\git\checkouts\steamworks-rs-ff4e63136d772f64\a0b0f97\src\lib.rs:246
  23:     0x7ff78baf010c - app::main::closure$0::closure$2
                               at C:\Users\andrei\Desktop\mathbits-next\src-tauri\src\main.rs:363
  24:     0x7ff78bc50a1e - core::hint::black_box
                               at /rustc/ed61e7d7e242494fb7057f2657300d9e77bb4fcb\library\core\src\hint.rs:472
  25:     0x7ff78bc50a1e - std::sys::backtrace::__rust_begin_short_backtrace<app::main::closure$0::closure_env$2,tuple$<> >
                               at /rustc/ed61e7d7e242494fb7057f2657300d9e77bb4fcb\library\std\src\sys\backtrace.rs:158
  26:     0x7ff78bc193f0 - std::thread::impl$0::spawn_unchecked_::closure$1::closure$0<app::main::closure$0::closure_env$2,tuple$<> >
                               at /rustc/ed61e7d7e242494fb7057f2657300d9e77bb4fcb\library\std\src\thread\mod.rs:559
  27:     0x7ff78bc5d651 - core::panic::unwind_safe::impl$25::call_once<tuple$<>,std::thread::impl$0::spawn_unchecked_::closure$1::closure_env$0<app::main::closure$0::closure_env$2,tuple$<> > >
                               at /rustc/ed61e7d7e242494fb7057f2657300d9e77bb4fcb\library\core\src\panic\unwind_safe.rs:274
  28:     0x7ff78bc7ecc0 - std::panicking::catch_unwind::do_call<core::panic::unwind_safe::AssertUnwindSafe<std::thread::impl$0::spawn_unchecked_::closure$1::closure_env$0<app::main::closure$0::closure_env$2,tuple$<> > >,tuple$<> >
                               at /rustc/ed61e7d7e242494fb7057f2657300d9e77bb4fcb\library\std\src\panicking.rs:590
  29:     0x7ff78bc19893 - std::thread::impl$0::spawn_unchecked_::closure$1::closure$0::closure$0<app::main::closure$0::closure_env$2,tuple$<> >
  30:     0x7ff78bc18923 - std::panicking::catch_unwind
                               at /rustc/ed61e7d7e242494fb7057f2657300d9e77bb4fcb\library\std\src\panicking.rs:553
  31:     0x7ff78bc18923 - std::panic::catch_unwind
                               at /rustc/ed61e7d7e242494fb7057f2657300d9e77bb4fcb\library\std\src\panic.rs:359
  32:     0x7ff78bc18923 - std::thread::impl$0::spawn_unchecked_::closure$1<app::main::closure$0::closure_env$2,tuple$<> >
                               at /rustc/ed61e7d7e242494fb7057f2657300d9e77bb4fcb\library\std\src\thread\mod.rs:557
  33:     0x7ff78baa9b0e - core::ops::function::FnOnce::call_once<std::thread::impl$0::spawn_unchecked_::closure_env$1<app::main::closure$0::closure_env$2,tuple$<> >,tuple$<> >
                               at /rustc/ed61e7d7e242494fb7057f2657300d9e77bb4fcb\library\core\src\ops\function.rs:250
  34:     0x7ff78c762fdd - alloc::boxed::impl$29::call_once
                               at /rustc/ed61e7d7e242494fb7057f2657300d9e77bb4fcb/library\alloc\src\boxed.rs:1985
  35:     0x7ff78c762fdd - alloc::boxed::impl$29::call_once
                               at /rustc/ed61e7d7e242494fb7057f2657300d9e77bb4fcb/library\alloc\src\boxed.rs:1985
  36:     0x7ff78c762fdd - std::sys::thread::windows::impl$0::new::thread_start
                               at /rustc/ed61e7d7e242494fb7057f2657300d9e77bb4fcb/library\std\src\sys\thread\windows.rs:60
  37:     0x7ffd38fbe8d7 - BaseThreadInitThunk
  38:     0x7ffd3988c53c - RtlUserThreadStart
thread caused non-unwinding panic. aborting.
\ ELIFECYCLE  Command failed with exit code 3221226505.