Segcache integration test is flaky within MacOS CI

[swlynch99]

The segcache integration test regularly fails for unrelated PRs in CI. #58 has marked this test as ignored. Once this issue is resolved that should be removed.

The test failure tends to look like this

2023-02-06T15:24:31.495+00:00 INFO [admin] running admin on: 127.0.0.1:9999
2023-02-06T15:24:31.495+00:00 INFO [server::listener] running server on: 0.0.0.0:12321

2023-02-06T15:24:41.584+00:00 INFO [integration::common] testing: get miss
2023-02-06T15:24:41.586+00:00 INFO [integration::common] status: passed

2023-02-06T15:24:41.586+00:00 INFO [integration::common] testing: gets miss
2023-02-06T15:24:41.667+00:00 INFO [integration::common] status: passed

2023-02-06T15:24:41.667+00:00 INFO [integration::common] testing: set and get
2023-02-06T15:24:41.888+00:00 INFO [integration::common] status: passed

2023-02-06T15:24:41.888+00:00 INFO [integration::common] testing: cas not_found
2023-02-06T15:24:41.990+00:00 INFO [integration::common] status: passed

2023-02-06T15:24:41.990+00:00 INFO [integration::common] testing: cas exists
2023-02-06T15:24:42.433+00:00 INFO [integration::common] status: passed

2023-02-06T15:24:42.433+00:00 INFO [integration::common] testing: cas stored
2023-02-06T15:24:42.653+00:00 ERROR [integration::common] expected: [86, 65, 76, 85, 69, 32, 52, 32, 48, 32, 49, 13, 10, 48, 13, 10, 69, 78, 68, 13, 10]
2023-02-06T15:24:42.653+00:00 ERROR [integration::common] received: [69, 78, 68, 13, 10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
thread 'main' panicked at 'status: failed
', src/server/segcache/tests/common.rs:249:17
stack backtrace:
   0:        0x106555d08 - std::backtrace_rs::backtrace::libunwind::trace::h310cbd77a7d2ae59
                               at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
   1:        0x106555d08 - std::backtrace_rs::backtrace::trace_unsynchronized::h5768bae568840507
                               at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:        0x106555d08 - std::sys_common::backtrace::_print_fmt::hd104a205649a2ffb
                               at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405/library/std/src/sys_common/backtrace.rs:65:5
   3:        0x106555d08 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h521420ec33f3769d
                               at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405/library/std/src/sys_common/backtrace.rs:44:22
   4:        0x1064d829a - core::fmt::write::h694a0d7c23f57ada
                               at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405/library/core/src/fmt/mod.rs:1208:17
   5:        0x10652f92c - std::io::Write::write_fmt::h1920a3973ad439e5
                               at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405/library/std/src/io/mod.rs:1682:15
   6:        0x106559baa - std::sys_common::backtrace::_print::h75582c4ed1a04abb
                               at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405/library/std/src/sys_common/backtrace.rs:47:5
   7:        0x106559baa - std::sys_common::backtrace::print::hef1aa4dbdc07ee06
                               at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405/library/std/src/sys_common/backtrace.rs:34:9
   8:        0x1065597d3 - std::panicking::default_hook::{{closure}}::h529701a1070b4ce0
                               at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405/library/std/src/panicking.rs:267:22
   9:        0x10655a820 - std::panicking::default_hook::hfeeab2c667b2d7c2
                               at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405/library/std/src/panicking.rs:286:9
  10:        0x10655a820 - std::panicking::rust_panic_with_hook::h1b5245192f90251d
                               at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405/library/std/src/panicking.rs:688:13
  11:        0x10655a2e8 - std::panicking::begin_panic_handler::{{closure}}::h3658f3a9566379d4
                               at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405/library/std/src/panicking.rs:577:13
  12:        0x10655a278 - std::sys_common::backtrace::__rust_end_short_backtrace::h9e01645d962f8882
                               at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405/library/std/src/sys_common/backtrace.rs:137:18
  13:        0x10655a242 - rust_begin_unwind
                               at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405/library/std/src/panicking.rs:575:5
  14:        0x1066725b3 - core::panicking::panic_fmt::h0097ad8ec0b07517
                               at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405/library/core/src/panicking.rs:64:14
  15:        0x1064b91b2 - integration::common::test::h11d917b82d2bf915
  16:        0x1064b9a68 - integration::common::tests::hc09557e5b6bd7830
                               at /Users/runner/work/pelikan/pelikan/src/server/segcache/tests/common.rs:56:5
  17:        0x1064b9a68 - integration::main::hc13071f0434bfd2d
                               at /Users/runner/work/pelikan/pelikan/src/server/segcache/tests/integration.rs:28:5
  18:        0x1064b6826 - core::ops::function::FnOnce::call_once::h5eb64975d91e601d
                               at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405/library/core/src/ops/function.rs:507:5
  19:        0x1064b6826 - std::sys_common::backtrace::__rust_begin_short_backtrace::h5a471b2b99bf64a3
                               at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405/library/std/src/sys_common/backtrace.rs:121:18
  20:        0x1064bbf9c - _main

[hderms]

yeah we can reopen if it ends up not fixing it for some reason