Dec 12 00:08:32.045 INFO checking Swoorup/rtasks against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 00:08:32.045 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-2/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +3a75e80557a103497cffbcab395a2f37061a77ea-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 12 00:08:32.502 INFO [stdout] 4256fb806b585bdda1c1ed74e0026928e7161824f8ed6f7d6c8e4e2fc50f527f
Dec 12 00:08:32.503 INFO running `"docker" "start" "-a" "4256fb806b585bdda1c1ed74e0026928e7161824f8ed6f7d6c8e4e2fc50f527f"`
Dec 12 00:08:33.376 INFO [stderr] usermod: no changes
Dec 12 00:08:33.588 INFO [stderr]     Checking futures v0.1.25
Dec 12 00:08:36.496 INFO [stderr]     Checking tokio-executor v0.1.5
Dec 12 00:08:36.496 INFO [stderr]     Checking tokio-io v0.1.9
Dec 12 00:08:36.496 INFO [stderr]     Checking want v0.0.6
Dec 12 00:08:36.496 INFO [stderr]     Checking futures-cpupool v0.1.8
Dec 12 00:08:38.255 INFO [stderr]     Checking tokio-threadpool v0.1.7
Dec 12 00:08:38.255 INFO [stderr]     Checking tokio-timer v0.2.7
Dec 12 00:08:38.255 INFO [stderr]     Checking tokio-current-thread v0.1.3
Dec 12 00:08:40.619 INFO [stderr]     Checking tokio-reactor v0.1.6
Dec 12 00:08:40.619 INFO [stderr]     Checking tokio-codec v0.1.1
Dec 12 00:08:40.619 INFO [stderr]     Checking tokio-async-await v0.1.4
Dec 12 00:08:40.619 INFO [stderr]     Checking h2 v0.1.12
Dec 12 00:08:43.540 INFO [stderr]     Checking tokio-fs v0.1.3
Dec 12 00:08:46.576 INFO [stderr]     Checking tokio-tcp v0.1.2
Dec 12 00:08:46.576 INFO [stderr]     Checking tokio-uds v0.2.2
Dec 12 00:08:46.576 INFO [stderr]     Checking tokio-udp v0.1.2
Dec 12 00:08:51.740 INFO [stderr]     Checking tokio v0.1.11
Dec 12 00:08:54.109 INFO [stderr]     Checking hyper v0.12.11
Dec 12 00:09:00.036 INFO [stderr]     Checking ctr_test v0.1.0 (/source)
Dec 12 00:09:13.642 INFO [stderr] warning: unreachable expression
Dec 12 00:09:13.642 INFO [stderr]   --> src/echo_client.rs:43:5
Dec 12 00:09:13.642 INFO [stderr]    |
Dec 12 00:09:13.642 INFO [stderr] 43 |     Ok(())
Dec 12 00:09:13.642 INFO [stderr]    |     ^^^^^^
Dec 12 00:09:13.673 INFO [stderr]    |
Dec 12 00:09:13.673 INFO [stderr]    = note: #[warn(unreachable_code)] on by default
Dec 12 00:09:13.673 INFO [stderr] 
Dec 12 00:09:13.844 INFO [stderr] warning: variable does not need to be mutable
Dec 12 00:09:13.844 INFO [stderr]   --> src/echo_client.rs:30:13
Dec 12 00:09:13.844 INFO [stderr]    |
Dec 12 00:09:13.845 INFO [stderr] 30 |         let mut input = input.replace("\n", "\0");
Dec 12 00:09:13.845 INFO [stderr]    |             ----^^^^^
Dec 12 00:09:13.845 INFO [stderr]    |             |
Dec 12 00:09:13.845 INFO [stderr]    |             help: remove this `mut`
Dec 12 00:09:13.864 INFO [stderr]    |
Dec 12 00:09:13.864 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 00:09:13.865 INFO [stderr] 
Dec 12 00:09:15.380 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 00:09:15.380 INFO [stderr]   --> src/chat.rs:64:13
Dec 12 00:09:15.380 INFO [stderr]    |
Dec 12 00:09:15.380 INFO [stderr] 64 |             await!(lines_tx.send_async(line));
Dec 12 00:09:15.380 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 00:09:15.380 INFO [stderr]    |
Dec 12 00:09:15.380 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 12 00:09:15.380 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 00:09:15.380 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 12 00:09:15.380 INFO [stderr] 
Dec 12 00:09:15.672 INFO [stderr] warning: unreachable expression
Dec 12 00:09:15.672 INFO [stderr]   --> src/echo_client.rs:43:5
Dec 12 00:09:15.672 INFO [stderr]    |
Dec 12 00:09:15.672 INFO [stderr] 43 |     Ok(())
Dec 12 00:09:15.672 INFO [stderr]    |     ^^^^^^
Dec 12 00:09:15.672 INFO [stderr]    |
Dec 12 00:09:15.672 INFO [stderr]    = note: #[warn(unreachable_code)] on by default
Dec 12 00:09:15.672 INFO [stderr] 
Dec 12 00:09:15.712 INFO [stderr] warning: variable does not need to be mutable
Dec 12 00:09:15.712 INFO [stderr]   --> src/echo_client.rs:30:13
Dec 12 00:09:15.712 INFO [stderr]    |
Dec 12 00:09:15.712 INFO [stderr] 30 |         let mut input = input.replace("\n", "\0");
Dec 12 00:09:15.712 INFO [stderr]    |             ----^^^^^
Dec 12 00:09:15.712 INFO [stderr]    |             |
Dec 12 00:09:15.712 INFO [stderr]    |             help: remove this `mut`
Dec 12 00:09:15.712 INFO [stderr]    |
Dec 12 00:09:15.712 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 00:09:15.712 INFO [stderr] 
Dec 12 00:09:16.064 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 00:09:16.064 INFO [stderr]   --> src/chat.rs:64:13
Dec 12 00:09:16.064 INFO [stderr]    |
Dec 12 00:09:16.064 INFO [stderr] 64 |             await!(lines_tx.send_async(line));
Dec 12 00:09:16.064 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 00:09:16.064 INFO [stderr]    |
Dec 12 00:09:16.064 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 12 00:09:16.064 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 00:09:16.064 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 12 00:09:16.064 INFO [stderr] 
Dec 12 00:09:16.211 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 42.80s
Dec 12 00:09:16.228 INFO [stderr] su: No module specific data is present
Dec 12 00:09:16.979 INFO running `"docker" "inspect" "4256fb806b585bdda1c1ed74e0026928e7161824f8ed6f7d6c8e4e2fc50f527f"`
Dec 12 00:09:17.286 INFO running `"docker" "rm" "-f" "4256fb806b585bdda1c1ed74e0026928e7161824f8ed6f7d6c8e4e2fc50f527f"`
Dec 12 00:09:17.656 INFO [stdout] 4256fb806b585bdda1c1ed74e0026928e7161824f8ed6f7d6c8e4e2fc50f527f