Dec 19 21:46:54.138 INFO checking Swoorup/rtasks against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 21:46:54.139 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-4/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/Swoorup/rtasks:/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 21:46:54.421 INFO [stdout] d9942e5bb4df20f2eaa5432c8b3d41f00e3a0e65b16ef570b53065b5828fc783
Dec 19 21:46:54.423 INFO running `"docker" "start" "-a" "d9942e5bb4df20f2eaa5432c8b3d41f00e3a0e65b16ef570b53065b5828fc783"`
Dec 19 21:46:55.135 INFO [stderr]     Checking futures v0.1.25
Dec 19 21:46:58.456 INFO [stderr]     Checking tokio-executor v0.1.5
Dec 19 21:46:58.456 INFO [stderr]     Checking tokio-io v0.1.9
Dec 19 21:46:58.456 INFO [stderr]     Checking futures-cpupool v0.1.8
Dec 19 21:46:58.460 INFO [stderr]     Checking want v0.0.6
Dec 19 21:46:59.448 INFO [stderr]     Checking tokio-threadpool v0.1.7
Dec 19 21:46:59.448 INFO [stderr]     Checking tokio-timer v0.2.7
Dec 19 21:46:59.448 INFO [stderr]     Checking tokio-current-thread v0.1.3
Dec 19 21:47:01.222 INFO [stderr]     Checking tokio-codec v0.1.1
Dec 19 21:47:01.222 INFO [stderr]     Checking tokio-reactor v0.1.6
Dec 19 21:47:01.222 INFO [stderr]     Checking tokio-async-await v0.1.4
Dec 19 21:47:01.222 INFO [stderr]     Checking h2 v0.1.12
Dec 19 21:47:03.003 INFO [stderr]     Checking tokio-fs v0.1.3
Dec 19 21:47:03.777 INFO [stderr]     Checking tokio-uds v0.2.2
Dec 19 21:47:03.780 INFO [stderr]     Checking tokio-tcp v0.1.2
Dec 19 21:47:03.780 INFO [stderr]     Checking tokio-udp v0.1.2
Dec 19 21:47:05.981 INFO [stderr]     Checking tokio v0.1.11
Dec 19 21:47:08.380 INFO [stderr]     Checking hyper v0.12.11
Dec 19 21:47:12.355 INFO [stderr]     Checking ctr_test v0.1.0 (/opt/crater/workdir)
Dec 19 21:47:15.301 INFO [stderr] warning: unreachable expression
Dec 19 21:47:15.301 INFO [stderr]   --> src/echo_client.rs:43:5
Dec 19 21:47:15.301 INFO [stderr]    |
Dec 19 21:47:15.301 INFO [stderr] 43 |     Ok(())
Dec 19 21:47:15.301 INFO [stderr]    |     ^^^^^^
Dec 19 21:47:15.308 INFO [stderr]    |
Dec 19 21:47:15.308 INFO [stderr]    = note: #[warn(unreachable_code)] on by default
Dec 19 21:47:15.308 INFO [stderr] 
Dec 19 21:47:15.392 INFO [stderr] warning: variable does not need to be mutable
Dec 19 21:47:15.392 INFO [stderr]   --> src/echo_client.rs:30:13
Dec 19 21:47:15.393 INFO [stderr]    |
Dec 19 21:47:15.393 INFO [stderr] 30 |         let mut input = input.replace("\n", "\0");
Dec 19 21:47:15.393 INFO [stderr]    |             ----^^^^^
Dec 19 21:47:15.393 INFO [stderr]    |             |
Dec 19 21:47:15.393 INFO [stderr]    |             help: remove this `mut`
Dec 19 21:47:15.394 INFO [stderr]    |
Dec 19 21:47:15.394 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 21:47:15.394 INFO [stderr] 
Dec 19 21:47:15.414 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 21:47:15.414 INFO [stderr]   --> src/chat.rs:64:13
Dec 19 21:47:15.415 INFO [stderr]    |
Dec 19 21:47:15.415 INFO [stderr] 64 |             await!(lines_tx.send_async(line));
Dec 19 21:47:15.415 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:47:15.415 INFO [stderr]    |
Dec 19 21:47:15.415 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 21:47:15.415 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 21:47:15.415 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 19 21:47:15.415 INFO [stderr] 
Dec 19 21:47:15.580 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 21:47:15.580 INFO [stderr]   --> src/chat.rs:64:13
Dec 19 21:47:15.580 INFO [stderr]    |
Dec 19 21:47:15.580 INFO [stderr] 64 |             await!(lines_tx.send_async(line));
Dec 19 21:47:15.580 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:47:15.580 INFO [stderr]    |
Dec 19 21:47:15.580 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 21:47:15.580 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 21:47:15.580 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 19 21:47:15.580 INFO [stderr] 
Dec 19 21:47:15.852 INFO [stderr] warning: unreachable expression
Dec 19 21:47:15.852 INFO [stderr]   --> src/echo_client.rs:43:5
Dec 19 21:47:15.852 INFO [stderr]    |
Dec 19 21:47:15.852 INFO [stderr] 43 |     Ok(())
Dec 19 21:47:15.852 INFO [stderr]    |     ^^^^^^
Dec 19 21:47:15.852 INFO [stderr]    |
Dec 19 21:47:15.852 INFO [stderr]    = note: #[warn(unreachable_code)] on by default
Dec 19 21:47:15.852 INFO [stderr] 
Dec 19 21:47:15.861 INFO [stderr] warning: variable does not need to be mutable
Dec 19 21:47:15.861 INFO [stderr]   --> src/echo_client.rs:30:13
Dec 19 21:47:15.861 INFO [stderr]    |
Dec 19 21:47:15.861 INFO [stderr] 30 |         let mut input = input.replace("\n", "\0");
Dec 19 21:47:15.861 INFO [stderr]    |             ----^^^^^
Dec 19 21:47:15.861 INFO [stderr]    |             |
Dec 19 21:47:15.861 INFO [stderr]    |             help: remove this `mut`
Dec 19 21:47:15.861 INFO [stderr]    |
Dec 19 21:47:15.861 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 21:47:15.861 INFO [stderr] 
Dec 19 21:47:15.929 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.94s
Dec 19 21:47:17.068 INFO running `"docker" "inspect" "d9942e5bb4df20f2eaa5432c8b3d41f00e3a0e65b16ef570b53065b5828fc783"`
Dec 19 21:47:17.447 INFO running `"docker" "rm" "-f" "d9942e5bb4df20f2eaa5432c8b3d41f00e3a0e65b16ef570b53065b5828fc783"`
Dec 19 21:47:17.868 INFO [stdout] d9942e5bb4df20f2eaa5432c8b3d41f00e3a0e65b16ef570b53065b5828fc783