`histogram::standard::tests::downsample` is flaky

[swlynch99]

This test seems to be flaky and has been failing on a bunch of unrelated PRs so I am disabling it. This issue is meant to track that it's disabled so it can be reenabled later on.

Error message and backtrace emitted when the test fails

test standard::tests::downsample ... FAILED

failures:

---- standard::tests::downsample stdout ----
thread 'standard::tests::downsample' panicked at histogram\src\standard.rs:384:17:
assertion failed: e < error
stack backtrace:
   0:     0x7ff7e184cb83 - std::sys_common::backtrace::_print::impl$0::fmt
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library\std\src\sys_common\backtrace.rs:44
   1:     0x7ff7e186b80d - core::fmt::rt::Argument::fmt
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library\core\src\fmt\rt.rs:142
   2:     0x7ff7e186b80d - core::fmt::write
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library\core\src\fmt\mod.rs:1120
   3:     0x7ff7e1849261 - std::io::Write::write_fmt<alloc::vec::Vec<u8,alloc::alloc::Global> >
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library\std\src\io\mod.rs:1762
   4:     0x7ff7e184c98a - std::sys_common::backtrace::_print
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library\std\src\sys_common\backtrace.rs:47
   5:     0x7ff7e184c98a - std::sys_common::backtrace::print
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library\std\src\sys_common\backtrace.rs:34
   6:     0x7ff7e184f4c9 - std::panicking::default_hook::closure$1
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library\std\src\panicking.rs:272
   7:     0x7ff7e184f114 - std::panicking::default_hook
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library\std\src\panicking.rs:289
   8:     0x7ff7e17fc1f0 - alloc::boxed::impl$49::call
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library\alloc\src\boxed.rs:2021
   9:     0x7ff7e17fc1f0 - test::test_main::closure$0
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library\test\src\lib.rs:138
  10:     0x7ff7e184f9e3 - alloc::boxed::impl$49::call
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library\alloc\src\boxed.rs:2021
  11:     0x7ff7e184f9e3 - std::panicking::rust_panic_with_hook
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library\std\src\panicking.rs:783
  12:     0x7ff7e184f84b - std::panicking::begin_panic_handler::closure$0
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library\std\src\panicking.rs:649
  13:     0x7ff7e184d479 - std::sys_common::backtrace::__rust_end_short_backtrace<std::panicking::begin_panic_handler::closure_env$0,never$>
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library\std\src\sys_common\backtrace.rs:170
  14:     0x7ff7e184f594 - std::panicking::begin_panic_handler
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library\std\src\panicking.rs:645
  15:     0x7ff7e18754c7 - core::panicking::panic_fmt
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library\core\src\panicking.rs:72
  16:     0x7ff7e1875582 - core::panicking::panic
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library\core\src\panicking.rs:127
  17:     0x7ff7e17b7bd7 - histogram::standard::tests::downsample
                               at D:\a\rustcommon\rustcommon\histogram\src\standard.rs:384
  18:     0x7ff7e17b74a8 - histogram::standard::tests::downsample::closure$0
                               at D:\a\rustcommon\rustcommon\histogram\src\standard.rs:349
  19:     0x7ff7e1795492 - core::ops::function::FnOnce::call_once<histogram::standard::tests::downsample::closure_env$0,tuple$<> >
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112\library\core\src\ops\function.rs:250
  20:     0x7ff7e18030cf - core::ops::function::FnOnce::call_once
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library\core\src\ops\function.rs:250
  21:     0x7ff7e18030cf - test::__rust_begin_short_backtrace<enum2$<core::result::Result<tuple$<>,alloc::string::String> >,enum2$<core::result::Result<tuple$<>,alloc::string::String> > (*)()>
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library\test\src\lib.rs:628
  22:     0x7ff7e1801b43 - test::run_test_in_process::closure$0
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library\test\src\lib.rs:651
  23:     0x7ff7e1801b43 - core::panic::unwind_safe::impl$23::call_once
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library\core\src\panic\unwind_safe.rs:272
  24:     0x7ff7e1801b43 - std::panicking::try::do_call
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library\std\src\panicking.rs:552
  25:     0x7ff7e1801b43 - std::panicking::try
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library\std\src\panicking.rs:516
  26:     0x7ff7e1801b43 - std::panic::catch_unwind
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library\std\src\panic.rs:142
  27:     0x7ff7e1801b43 - test::run_test_in_process
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library\test\src\lib.rs:651
  28:     0x7ff7e1801b43 - test::run_test::closure$0
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library\test\src\lib.rs:574
  29:     0x7ff7e17c086a - test::run_test::closure$1
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library\test\src\lib.rs:602
  30:     0x7ff7e17c086a - std::sys_common::backtrace::__rust_begin_short_backtrace<test::run_test::closure_env$1,tuple$<> >
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library\std\src\sys_common\backtrace.rs:154
  31:     0x7ff7e17c6590 - std::thread::impl$0::spawn_unchecked_::closure$1::closure$0
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library\std\src\thread\mod.rs:529
  32:     0x7ff7e17c6590 - core::panic::unwind_safe::impl$23::call_once
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library\core\src\panic\unwind_safe.rs:272
  33:     0x7ff7e17c6590 - std::panicking::try::do_call
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library\std\src\panicking.rs:552
  34:     0x7ff7e17c6590 - std::panicking::try
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library\std\src\panicking.rs:516
  35:     0x7ff7e17c6590 - std::panic::catch_unwind
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library\std\src\panic.rs:142
  36:     0x7ff7e17c6590 - std::thread::impl$0::spawn_unchecked_::closure$1
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library\std\src\thread\mod.rs:528
  37:     0x7ff7e17c6590 - core::ops::function::FnOnce::call_once<std::thread::impl$0::spawn_unchecked_::closure_env$1<test::run_test::closure_env$1,tuple$<> >,tuple$<> >
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library\core\src\ops\function.rs:250
  38:     0x7ff7e185b62c - std::sys::windows::thread::impl$0::new::thread_start
                               at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library\std\src\sys\windows\thread.rs:58
  39:     0x7ffd781a4de0 - BaseThreadInitThunk
  40:     0x7ffd798ded9b - RtlUserThreadStart


failures:
    standard::tests::downsample