Dec 04 13:05:56.336 INFO checking nooberfsh/heartbeat against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 04 13:05:56.336 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-2/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/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 +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-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 04 13:05:56.711 INFO [stdout] 25f5f5c04b60f3affe17dc7e30ca251fc9a72dc649ac1fc796a423a02f99fad1
Dec 04 13:05:56.714 INFO running `"docker" "start" "-a" "25f5f5c04b60f3affe17dc7e30ca251fc9a72dc649ac1fc796a423a02f99fad1"`
Dec 04 13:05:57.252 INFO [stderr] usermod: no changes
Dec 04 13:05:57.348 INFO [stderr]     Checking iovec v0.1.1
Dec 04 13:05:57.348 INFO [stderr]     Checking net2 v0.2.31
Dec 04 13:05:57.749 INFO [stderr]     Checking bytes v0.4.5
Dec 04 13:05:58.109 INFO [stderr]     Checking mio v0.6.11
Dec 04 13:05:59.327 INFO [stderr]     Checking tokio-io v0.1.3
Dec 04 13:06:00.504 INFO [stderr]     Checking tokio-core v0.1.10
Dec 04 13:06:01.923 INFO [stderr]     Checking test-tokio v0.1.0 (/source)
Dec 04 13:06:02.723 INFO [stderr] warning: unused import: `tokio_io::AsyncRead`
Dec 04 13:06:02.723 INFO [stderr]   --> src/main.rs:19:5
Dec 04 13:06:02.723 INFO [stderr]    |
Dec 04 13:06:02.723 INFO [stderr] 19 | use tokio_io::AsyncRead;
Dec 04 13:06:02.723 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 04 13:06:02.723 INFO [stderr]    |
Dec 04 13:06:02.723 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 04 13:06:02.723 INFO [stderr] 
Dec 04 13:06:02.920 INFO [stderr] warning: method is never used: `conns_num`
Dec 04 13:06:02.920 INFO [stderr]    --> src/main.rs:103:5
Dec 04 13:06:02.920 INFO [stderr]     |
Dec 04 13:06:02.920 INFO [stderr] 103 |     fn conns_num(&self) -> usize {
Dec 04 13:06:02.920 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 13:06:02.920 INFO [stderr]     |
Dec 04 13:06:02.920 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 04 13:06:02.921 INFO [stderr] 
Dec 04 13:06:02.921 INFO [stderr] warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
Dec 04 13:06:02.921 INFO [stderr]  --> src/main.rs:1:12
Dec 04 13:06:02.921 INFO [stderr]   |
Dec 04 13:06:02.921 INFO [stderr] 1 | #![feature(conservative_impl_trait)]
Dec 04 13:06:02.921 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 13:06:02.921 INFO [stderr]   |
Dec 04 13:06:02.921 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 04 13:06:02.921 INFO [stderr] 
Dec 04 13:06:02.935 INFO [stderr] warning: unused import: `tokio_io::AsyncRead`
Dec 04 13:06:02.935 INFO [stderr]   --> src/main.rs:19:5
Dec 04 13:06:02.935 INFO [stderr]    |
Dec 04 13:06:02.935 INFO [stderr] 19 | use tokio_io::AsyncRead;
Dec 04 13:06:02.935 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 04 13:06:02.936 INFO [stderr]    |
Dec 04 13:06:02.936 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 04 13:06:02.936 INFO [stderr] 
Dec 04 13:06:03.083 INFO [stderr] warning: method is never used: `conns_num`
Dec 04 13:06:03.083 INFO [stderr]    --> src/main.rs:103:5
Dec 04 13:06:03.083 INFO [stderr]     |
Dec 04 13:06:03.083 INFO [stderr] 103 |     fn conns_num(&self) -> usize {
Dec 04 13:06:03.083 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 13:06:03.083 INFO [stderr]     |
Dec 04 13:06:03.083 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 04 13:06:03.083 INFO [stderr] 
Dec 04 13:06:03.083 INFO [stderr] warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
Dec 04 13:06:03.083 INFO [stderr]  --> src/main.rs:1:12
Dec 04 13:06:03.083 INFO [stderr]   |
Dec 04 13:06:03.083 INFO [stderr] 1 | #![feature(conservative_impl_trait)]
Dec 04 13:06:03.083 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 13:06:03.083 INFO [stderr]   |
Dec 04 13:06:03.083 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 04 13:06:03.083 INFO [stderr] 
Dec 04 13:06:03.105 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.83s
Dec 04 13:06:03.115 INFO [stderr] su: No module specific data is present
Dec 04 13:06:03.785 INFO running `"docker" "inspect" "25f5f5c04b60f3affe17dc7e30ca251fc9a72dc649ac1fc796a423a02f99fad1"`
Dec 04 13:06:04.133 INFO running `"docker" "rm" "-f" "25f5f5c04b60f3affe17dc7e30ca251fc9a72dc649ac1fc796a423a02f99fad1"`
Dec 04 13:06:04.295 INFO [stdout] 25f5f5c04b60f3affe17dc7e30ca251fc9a72dc649ac1fc796a423a02f99fad1