Dec 19 21:36:34.893 INFO checking TinyKitten/MWA-Rust against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 21:36:34.893 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-5/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/TinyKitten/MWA-Rust:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 21:36:35.044 INFO [stdout] 98c3c4818953bbd9828333dcdc112988b6b238ef52e84f25ebe21a38ac987241
Dec 19 21:36:35.046 INFO running `"docker" "start" "-a" "98c3c4818953bbd9828333dcdc112988b6b238ef52e84f25ebe21a38ac987241"`
Dec 19 21:36:35.940 INFO [stderr]     Checking rand_core v0.2.0-pre.0
Dec 19 21:36:35.940 INFO [stderr]     Checking serde_json v1.0.17
Dec 19 21:36:35.944 INFO [stderr]     Checking rust-crypto v0.2.36
Dec 19 21:36:35.946 INFO [stderr]    Compiling serde_derive v1.0.55
Dec 19 21:36:35.946 INFO [stderr]     Checking hyper v0.10.13
Dec 19 21:36:35.946 INFO [stderr]     Checking scan_fmt v0.1.3
Dec 19 21:36:37.021 INFO [stderr]     Checking rand v0.5.0-pre.2
Dec 19 21:36:45.843 INFO [stderr]     Checking iron v0.6.0
Dec 19 21:36:45.843 INFO [stderr]     Checking bson v0.10.0
Dec 19 21:36:46.648 INFO [stderr] error[E0119]: conflicting implementations of trait `middleware::BeforeMiddleware` for type `std::sync::Arc<_>`:
Dec 19 21:36:46.649 INFO [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/iron-0.6.0/src/middleware/mod.rs:416:1
Dec 19 21:36:46.649 INFO [stderr]     |
Dec 19 21:36:46.649 INFO [stderr] 399 | / impl<F> BeforeMiddleware for F
Dec 19 21:36:46.650 INFO [stderr] 400 | | where F: Send + Sync + 'static + Fn(&mut Request) -> IronResult<()> {
Dec 19 21:36:46.650 INFO [stderr] 401 | |     fn before(&self, req: &mut Request) -> IronResult<()> {
Dec 19 21:36:46.650 INFO [stderr] 402 | |         (*self)(req)
Dec 19 21:36:46.650 INFO [stderr] 403 | |     }
Dec 19 21:36:46.650 INFO [stderr] 404 | | }
Dec 19 21:36:46.651 INFO [stderr]     | |_- first implementation here
Dec 19 21:36:46.651 INFO [stderr] ...
Dec 19 21:36:46.651 INFO [stderr] 416 |   impl<T> BeforeMiddleware for Arc<T> where T: BeforeMiddleware {
Dec 19 21:36:46.651 INFO [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `std::sync::Arc<_>`
Dec 19 21:36:46.652 INFO [stderr]     |
Dec 19 21:36:46.652 INFO [stderr]     = note: downstream crates may implement trait `std::ops::FnOnce<(&mut request::Request<'_, '_>,)>` for type `std::sync::Arc<_>`
Dec 19 21:36:46.652 INFO [stderr]     = note: downstream crates may implement trait `std::ops::Fn<(&mut request::Request<'_, '_>,)>` for type `std::sync::Arc<_>`
Dec 19 21:36:46.652 INFO [stderr] 
Dec 19 21:36:46.652 INFO [stderr] error[E0119]: conflicting implementations of trait `middleware::AfterMiddleware` for type `std::sync::Arc<_>`:
Dec 19 21:36:46.653 INFO [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/iron-0.6.0/src/middleware/mod.rs:443:1
Dec 19 21:36:46.653 INFO [stderr]     |
Dec 19 21:36:46.653 INFO [stderr] 426 | / impl<F> AfterMiddleware for F
Dec 19 21:36:46.653 INFO [stderr] 427 | | where F: Send + Sync + 'static + Fn(&mut Request, Response) -> IronResult<Response> {
Dec 19 21:36:46.654 INFO [stderr] 428 | |     fn after(&self, req: &mut Request, res: Response) -> IronResult<Response> {
Dec 19 21:36:46.654 INFO [stderr] 429 | |         (*self)(req, res)
Dec 19 21:36:46.654 INFO [stderr] 430 | |     }
Dec 19 21:36:46.654 INFO [stderr] 431 | | }
Dec 19 21:36:46.655 INFO [stderr]     | |_- first implementation here
Dec 19 21:36:46.655 INFO [stderr] ...
Dec 19 21:36:46.655 INFO [stderr] 443 |   impl<T> AfterMiddleware for Arc<T> where T: AfterMiddleware {
Dec 19 21:36:46.655 INFO [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `std::sync::Arc<_>`
Dec 19 21:36:46.656 INFO [stderr]     |
Dec 19 21:36:46.656 INFO [stderr]     = note: downstream crates may implement trait `std::ops::FnOnce<(&mut request::Request<'_, '_>, response::Response)>` for type `std::sync::Arc<_>`
Dec 19 21:36:46.656 INFO [stderr]     = note: downstream crates may implement trait `std::ops::Fn<(&mut request::Request<'_, '_>, response::Response)>` for type `std::sync::Arc<_>`
Dec 19 21:36:46.656 INFO [stderr] 
Dec 19 21:36:46.740 INFO [stderr] error: aborting due to 2 previous errors
Dec 19 21:36:46.741 INFO [stderr] 
Dec 19 21:36:46.741 INFO [stderr] For more information about this error, try `rustc --explain E0119`.
Dec 19 21:36:46.757 INFO [stderr] error: Could not compile `iron`.
Dec 19 21:36:46.757 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 19 21:36:54.079 INFO [stderr] error: build failed
Dec 19 21:36:57.378 INFO running `"docker" "inspect" "98c3c4818953bbd9828333dcdc112988b6b238ef52e84f25ebe21a38ac987241"`
Dec 19 21:36:57.646 INFO running `"docker" "rm" "-f" "98c3c4818953bbd9828333dcdc112988b6b238ef52e84f25ebe21a38ac987241"`
Dec 19 21:36:58.020 INFO [stdout] 98c3c4818953bbd9828333dcdc112988b6b238ef52e84f25ebe21a38ac987241