Dec 19 21:46:54.338 INFO checking Swoorup/rtasks against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 21:46:54.338 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-0/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 21:46:54.518 INFO [stdout] 23b0b81d9d970cb627ab0128242ab37cebed2000a4e84b0e01cdd6fda5926835
Dec 19 21:46:54.518 INFO running `"docker" "start" "-a" "23b0b81d9d970cb627ab0128242ab37cebed2000a4e84b0e01cdd6fda5926835"`
Dec 19 21:46:55.550 INFO [stderr]     Checking futures v0.1.25
Dec 19 21:46:58.564 INFO [stderr]     Checking tokio-io v0.1.9
Dec 19 21:46:58.564 INFO [stderr]     Checking tokio-executor v0.1.5
Dec 19 21:46:58.564 INFO [stderr]     Checking want v0.0.6
Dec 19 21:46:58.564 INFO [stderr]     Checking futures-cpupool v0.1.8
Dec 19 21:46:59.778 INFO [stderr]     Checking tokio-threadpool v0.1.7
Dec 19 21:46:59.778 INFO [stderr]     Checking tokio-current-thread v0.1.3
Dec 19 21:46:59.778 INFO [stderr]     Checking tokio-timer v0.2.7
Dec 19 21:47:00.940 INFO [stderr]     Checking tokio-reactor v0.1.6
Dec 19 21:47:00.940 INFO [stderr]     Checking tokio-codec v0.1.1
Dec 19 21:47:00.940 INFO [stderr]     Checking tokio-async-await v0.1.4
Dec 19 21:47:00.940 INFO [stderr]     Checking h2 v0.1.12
Dec 19 21:47:03.480 INFO [stderr]     Checking tokio-fs v0.1.3
Dec 19 21:47:04.312 INFO [stderr]     Checking tokio-tcp v0.1.2
Dec 19 21:47:04.312 INFO [stderr]     Checking tokio-udp v0.1.2
Dec 19 21:47:04.329 INFO [stderr]     Checking tokio-uds v0.2.2
Dec 19 21:47:06.474 INFO [stderr]     Checking tokio v0.1.11
Dec 19 21:47:09.378 INFO [stderr]     Checking hyper v0.12.11
Dec 19 21:47:13.892 INFO [stderr]     Checking ctr_test v0.1.0 (/opt/crater/workdir)
Dec 19 21:47:16.784 INFO [stderr] warning: unreachable expression
Dec 19 21:47:16.784 INFO [stderr]   --> src/echo_client.rs:43:5
Dec 19 21:47:16.784 INFO [stderr]    |
Dec 19 21:47:16.784 INFO [stderr] 43 |     Ok(())
Dec 19 21:47:16.784 INFO [stderr]    |     ^^^^^^
Dec 19 21:47:16.784 INFO [stderr]    |
Dec 19 21:47:16.784 INFO [stderr]    = note: #[warn(unreachable_code)] on by default
Dec 19 21:47:16.784 INFO [stderr] 
Dec 19 21:47:16.905 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 21:47:16.905 INFO [stderr]   --> src/chat.rs:64:13
Dec 19 21:47:16.905 INFO [stderr]    |
Dec 19 21:47:16.905 INFO [stderr] 64 |             await!(lines_tx.send_async(line));
Dec 19 21:47:16.905 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:47:16.905 INFO [stderr]    |
Dec 19 21:47:16.905 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 21:47:16.905 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 21:47:16.905 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 21:47:16.905 INFO [stderr] 
Dec 19 21:47:17.000 INFO [stderr] warning: variable does not need to be mutable
Dec 19 21:47:17.000 INFO [stderr]   --> src/echo_client.rs:30:13
Dec 19 21:47:17.000 INFO [stderr]    |
Dec 19 21:47:17.000 INFO [stderr] 30 |         let mut input = input.replace("\n", "\0");
Dec 19 21:47:17.000 INFO [stderr]    |             ----^^^^^
Dec 19 21:47:17.000 INFO [stderr]    |             |
Dec 19 21:47:17.000 INFO [stderr]    |             help: remove this `mut`
Dec 19 21:47:17.000 INFO [stderr]    |
Dec 19 21:47:17.000 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 21:47:17.000 INFO [stderr] 
Dec 19 21:47:17.340 INFO [stderr] warning: unreachable expression
Dec 19 21:47:17.340 INFO [stderr]   --> src/echo_client.rs:43:5
Dec 19 21:47:17.340 INFO [stderr]    |
Dec 19 21:47:17.340 INFO [stderr] 43 |     Ok(())
Dec 19 21:47:17.340 INFO [stderr]    |     ^^^^^^
Dec 19 21:47:17.340 INFO [stderr]    |
Dec 19 21:47:17.340 INFO [stderr]    = note: #[warn(unreachable_code)] on by default
Dec 19 21:47:17.340 INFO [stderr] 
Dec 19 21:47:17.456 INFO [stderr] warning: variable does not need to be mutable
Dec 19 21:47:17.456 INFO [stderr]   --> src/echo_client.rs:30:13
Dec 19 21:47:17.456 INFO [stderr]    |
Dec 19 21:47:17.456 INFO [stderr] 30 |         let mut input = input.replace("\n", "\0");
Dec 19 21:47:17.456 INFO [stderr]    |             ----^^^^^
Dec 19 21:47:17.456 INFO [stderr]    |             |
Dec 19 21:47:17.456 INFO [stderr]    |             help: remove this `mut`
Dec 19 21:47:17.456 INFO [stderr]    |
Dec 19 21:47:17.456 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 21:47:17.456 INFO [stderr] 
Dec 19 21:47:17.544 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 21:47:17.544 INFO [stderr]   --> src/chat.rs:64:13
Dec 19 21:47:17.544 INFO [stderr]    |
Dec 19 21:47:17.544 INFO [stderr] 64 |             await!(lines_tx.send_async(line));
Dec 19 21:47:17.544 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:47:17.544 INFO [stderr]    |
Dec 19 21:47:17.544 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 21:47:17.544 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 21:47:17.544 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 21:47:17.544 INFO [stderr] 
Dec 19 21:47:17.873 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.50s
Dec 19 21:47:18.553 INFO running `"docker" "inspect" "23b0b81d9d970cb627ab0128242ab37cebed2000a4e84b0e01cdd6fda5926835"`
Dec 19 21:47:18.862 INFO running `"docker" "rm" "-f" "23b0b81d9d970cb627ab0128242ab37cebed2000a4e84b0e01cdd6fda5926835"`
Dec 19 21:47:19.109 INFO [stdout] 23b0b81d9d970cb627ab0128242ab37cebed2000a4e84b0e01cdd6fda5926835