Release v0.8.49 broke dlang's Buildkite CI

[Geod24]

Seeing persistent failures to vibe.d since today. I'm pretty certain it comes from v0.8.49.
Failures example: https://buildkite.com/dlang/dmd/builds/12112

Config vibe.d+libevent-test

+ cd tests/vibe.web.web.auth
  | + dub --compiler=dmd --build-mode=separate
[...]
  | eventcore 0.8.49: target for configuration "epoll" is up to date.
[...]
  | vibe-d:web 0.9.0-alpha.2: target for configuration "library" is up to date.
  | tests ~master: building configuration "application"...
[...]
  | Running ./tests
  | [main(----) INF] Listening for requests on http://127.0.0.1:37378/
  | core.exception.AssertError@source/app.d(39): Error writing data to socket.
  | ----------------
  | ??:? _d_assert_msg [0x9fabd6]
  | source/app.d:39 nothrow @safe void app._sharedStaticCtor_L17_C1().__lambda1().test(immutable(char)[], immutable(char)[], vibe.http.status.HTTPStatus) [0x7b27d7]
  | source/app.d:45 nothrow @safe void app._sharedStaticCtor_L17_C1().__lambda1() [0x7b23bc]
  | ../../../.dub/packages/vibe-core-1.8.1/vibe-core/source/vibe/core/task.d:653 void vibe.core.task.TaskFuncInfo.set!(void delegate() @safe).set(ref void delegate() @safe).callDelegate(ref vibe.core.task.TaskFuncInfo) [0x7cee5b]
  | ../../../.dub/packages/vibe-core-1.8.1/vibe-core/source/vibe/core/task.d:674 void vibe.core.task.TaskFuncInfo.call() [0x964941]
  | ../../../.dub/packages/vibe-core-1.8.1/vibe-core/source/vibe/core/task.d:400 nothrow void vibe.core.task.TaskFiber.run() [0x963b64]
  | ??:? void core.thread.fiber.Fiber.run() [0xa5f325]
  | ??:? fiber_entryPoint [0xa5f20a]
  | Program exited with code -6
  | 🚨 Error: The command exited with status 2

Same test failing with vibe.d+vibe-core.

[Geod24]

By the way Buildkite already excludes a few tests because they are spurious, maybe it could use someone familiar to take a look at it, see if some can be removed (or added) now: https://github.com/dlang/ci/blob/master/buildkite/build_project.sh

[Geod24]

Fixed, thanks!