Diagnose contile dev env failures

[pjenvey]

Last week the contile dev env returned errors (but now it's working), let's take a look at logs and determine what was going wrong.

Dependent on more access to the project issue1708566

curl -v \
    -H User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:72.0) Gecko/20100101 Firefox/72.0 \
    https://contile-dev.topsites.nonprod.cloudops.mozgcp.net/v1/tiles?country=US&placement=newtab

[jrconlin]

Hrm. Is there a log message we should capture here in case it falls out of sentry?

[pjenvey]

This is no longer happening, when it did happen on the 16th we saw these errors in the logs:

msg: "Internal Server Error: HandlerError { kind: Reqwest(reqwest::Error { kind: Decode, source: Error("missing field `tiles`", line: 1, column: 2) }), backtrace:    0: contile::web::handlers::get_tiles::{{closure}}
   1: <actix_web::handler::HandlerServiceResponse<T,R> as core::future::future::Future>::poll
   2: <actix_web::handler::ExtractResponse<T,S> as core::future::future::Future>::poll
   3: <futures_util::future::future::map::Map<Fut,F> as core::future::future::Future>::poll
   4: <futures_util::future::future::Map<Fut,F> as core::future::future::Future>::poll
   5: <core::pin::Pin<P> as core::future::future::Future>::poll
   6: <futures_util::future::either::Either<A,B> as core::future::future::Future>::poll
   7: <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll
   8: <futures_util::future::future::map::Map<Fut,F> as core::future::future::Future>::poll
   9: <futures_util::future::try_future::try_flatten::TryFlatten<Fut,<Fut as futures_core::future::TryFuture>::Ok> as core::future::future::Future>::poll
  10: <futures_util::future::try_future::AndThen<Fut1,Fut2,F> as core::future::future::Future>::poll
  11: <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll
  12: actix_http::h1::dispatcher::InnerDispatcher<T,S,B,X,U>::poll_response
  13: <actix_http::h1::dispatcher::Dispatcher<T,S,B,X,U> as core::future::future::Future>::poll
  14: <actix_service::and_then::AndThenServiceResponse<A,B> as core::future::future::Future>::poll
  15: <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll
  16: <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
  17: tokio::runtime::task::harness::Harness<T,S>::poll
  18: std::thread::local::LocalKey<T>::with
  19: tokio::task::local::LocalSet::tick
  20: <tokio::task::local::RunUntil<T> as core::future::future::Future>::poll
  21: <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll
  22: std::thread::local::LocalKey<T>::with
  23: tokio::macros::scoped_tls::ScopedKey<T>::set
  24: tokio::runtime::basic_scheduler::BasicScheduler<P>::block_on
  25: tokio::runtime::context::enter
  26: std::sys_common::backtrace::__rust_begin_short_backtrace
  27: core::ops::function::FnOnce::call_once{{vtable.shim}}
  28: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
             at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/alloc/src/boxed.rs:1307:9
      <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
             at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/alloc/src/boxed.rs:1307:9
      std::sys::unix::thread::Thread::new::thread_start
             at /rustc/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/std/src/sys/unix/thread.rs:71:17
  29: start_thread
  30: clone

I'm closing this and logging a new issue for this stack trace.