[BUG] samply record rustup check fails with error slice index starts at 8 but ends at 0

[Matt711]

Running the example command in the README gives me the following error.

$ RUST_BACKTRACE=full samply record rustup check
thread '<unnamed>' panicked at /home/nfs/mmurray/.cargo/registry/src/index.crates.io-6f17d22bba15001f/samply-0.12.0/src/linux/perf_event.rs:39:72:
slice index starts at 8 but ends at 0
stack backtrace:
   0:     0xb285f587ae6c - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h00b09a4bf39b2d85
   1:     0xb285f58a0374 - core::fmt::write::h7ceb4b8480f8c249
   2:     0xb285f5876bc8 - std::io::Write::write_fmt::h85dd460e8a217df7
   3:     0xb285f587ad20 - std::sys::backtrace::BacktraceLock::print::h9a7ef9a5429d1e7e
   4:     0xb285f587bc3c - std::panicking::default_hook::{{closure}}::h0c27709af3f8d4c6
   5:     0xb285f587ba84 - std::panicking::default_hook::h896b14ac97871c98
   6:     0xb285f587c270 - std::panicking::rust_panic_with_hook::h660add0bcc8a80ea
   7:     0xb285f587c0c4 - std::panicking::begin_panic_handler::{{closure}}::h83d17f92f6c8c9b6
   8:     0xb285f587b368 - std::sys::backtrace::__rust_end_short_backtrace::hab5cb706f3ff2287
   9:     0xb285f587bd84 - rust_begin_unwind
  10:     0xb285f534de8c - core::panicking::panic_fmt::h8267c22f618f324d
  11:     0xb285f58a7534 - core::slice::index::slice_index_order_fail::do_panic::runtime::h12c3554b7d8096dc
  12:     0xb285f534e24c - core::slice::index::slice_index_order_fail::h6b2fdbc9a3c4f969
  13:     0xb285f542e58c - samply::linux::perf_event::EventRef::get::h4b6d02b538ee1504
  14:     0xb285f54950b0 - <alloc::vec::Vec<T,A> as alloc::vec::spec_extend::SpecExtend<T,I>>::spec_extend::hdb59c6bb3a41b9af
  15:     0xb285f53c3554 - samply::linux::perf_group::PerfGroup::consume_events::h7d8de9b2f701f856
  16:     0xb285f53607ec - samply::linux::profiler::run_profiler::h4734d1927aec828d
  17:     0xb285f535141c - std::sys::backtrace::__rust_begin_short_backtrace::h62d2d4fb01261e82
  18:     0xb285f5416b34 - core::ops::function::FnOnce::call_once{{vtable.shim}}::ha469c73f2e0ae4cf
  19:     0xb285f5880e28 - std::sys::pal::unix::thread::Thread::new::thread_start::hd1bb28d1647e61f1
  20:     0xf9f24493d5c8 - start_thread
                               at ./nptl/pthread_create.c:442:8
  21:     0xf9f2449a5edc - thread_start
                               at ./misc/../sysdeps/unix/sysv/linux/aarch64/clone.S:79
  22:                0x0 - <unknown>
stable-aarch64-unknown-linux-gnu - Up to date : 1.84.0 (9fc6b4312 2025-01-07)
rustup - Up to date : 1.27.1
thread 'main' panicked at /home/nfs/mmurray/.cargo/registry/src/index.crates.io-6f17d22bba15001f/samply-0.12.0/src/linux/profiler.rs:200:10:
called `Result::unwrap()` on an `Err` value: "SendError(..)"
stack backtrace:
   0:     0xb285f587ae6c - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h00b09a4bf39b2d85
   1:     0xb285f58a0374 - core::fmt::write::h7ceb4b8480f8c249
   2:     0xb285f5876bc8 - std::io::Write::write_fmt::h85dd460e8a217df7
   3:     0xb285f587ad20 - std::sys::backtrace::BacktraceLock::print::h9a7ef9a5429d1e7e
   4:     0xb285f587bc3c - std::panicking::default_hook::{{closure}}::h0c27709af3f8d4c6
   5:     0xb285f587ba84 - std::panicking::default_hook::h896b14ac97871c98
   6:     0xb285f587c270 - std::panicking::rust_panic_with_hook::h660add0bcc8a80ea
   7:     0xb285f587c0c4 - std::panicking::begin_panic_handler::{{closure}}::h83d17f92f6c8c9b6
   8:     0xb285f587b368 - std::sys::backtrace::__rust_end_short_backtrace::hab5cb706f3ff2287
   9:     0xb285f587bd84 - rust_begin_unwind
  10:     0xb285f534de8c - core::panicking::panic_fmt::h8267c22f618f324d
  11:     0xb285f534e1f0 - core::result::unwrap_failed::hfb7b21611a75dc75
  12:     0xb285f535dd2c - samply::linux::profiler::start_recording::h60b2ad585476822d
  13:     0xb285f5432064 - samply::main::hab6443e7ce7d34db
  14:     0xb285f535156c - std::sys::backtrace::__rust_begin_short_backtrace::h84a90e64c5392a0f
  15:     0xb285f54af230 - std::rt::lang_start::{{closure}}::h8eba915c090c2439
  16:     0xb285f58703c4 - std::rt::lang_start_internal::h647ceeb55972e3a5
  17:     0xb285f5439064 - main
  18:     0xf9f2448e73fc - __libc_start_call_main
                               at ./csu/../sysdeps/nptl/libc_start_call_main.h:58:16
  19:     0xf9f2448e74cc - __libc_start_main_impl
                               at ./csu/../csu/libc-start.c:392:3
  20:     0xb285f534e4f0 - _start
  21:                0x0 - <unknown>