Dec 17 18:38:52.892 INFO checking nooberfsh/heartbeat against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 18:38:52.892 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-5/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/nooberfsh/heartbeat:/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 18:38:53.225 INFO [stdout] f169e4375fe2ea4861709aeeb8fc8055f3b206a234a71a351e42107c4d59bc3a
Dec 17 18:38:53.230 INFO running `"docker" "start" "-a" "f169e4375fe2ea4861709aeeb8fc8055f3b206a234a71a351e42107c4d59bc3a"`
Dec 17 18:38:54.675 INFO [stderr]     Checking tokio-io v0.1.3
Dec 17 18:38:55.512 INFO [stderr]     Checking tokio-core v0.1.10
Dec 17 18:38:56.719 INFO [stderr]     Checking test-tokio v0.1.0 (/opt/crater/workdir)
Dec 17 18:38:56.966 INFO [stderr] warning: unused import: `tokio_io::AsyncRead`
Dec 17 18:38:56.966 INFO [stderr]   --> src/main.rs:19:5
Dec 17 18:38:56.966 INFO [stderr]    |
Dec 17 18:38:56.966 INFO [stderr] 19 | use tokio_io::AsyncRead;
Dec 17 18:38:56.966 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 17 18:38:56.966 INFO [stderr]    |
Dec 17 18:38:56.966 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 17 18:38:56.966 INFO [stderr] 
Dec 17 18:38:56.966 INFO [stderr] warning: unused import: `tokio_io::AsyncRead`
Dec 17 18:38:56.966 INFO [stderr]   --> src/main.rs:19:5
Dec 17 18:38:56.966 INFO [stderr]    |
Dec 17 18:38:56.966 INFO [stderr] 19 | use tokio_io::AsyncRead;
Dec 17 18:38:56.966 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 17 18:38:56.972 INFO [stderr]    |
Dec 17 18:38:56.972 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 17 18:38:56.972 INFO [stderr] 
Dec 17 18:38:57.091 INFO [stderr] warning: method is never used: `conns_num`
Dec 17 18:38:57.091 INFO [stderr]    --> src/main.rs:103:5
Dec 17 18:38:57.091 INFO [stderr]     |
Dec 17 18:38:57.091 INFO [stderr] 103 |     fn conns_num(&self) -> usize {
Dec 17 18:38:57.091 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 18:38:57.091 INFO [stderr]     |
Dec 17 18:38:57.091 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 17 18:38:57.091 INFO [stderr] 
Dec 17 18:38:57.091 INFO [stderr] warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
Dec 17 18:38:57.091 INFO [stderr]  --> src/main.rs:1:12
Dec 17 18:38:57.091 INFO [stderr]   |
Dec 17 18:38:57.091 INFO [stderr] 1 | #![feature(conservative_impl_trait)]
Dec 17 18:38:57.092 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 18:38:57.092 INFO [stderr]   |
Dec 17 18:38:57.092 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 17 18:38:57.092 INFO [stderr] 
Dec 17 18:38:57.092 INFO [stderr] warning: method is never used: `conns_num`
Dec 17 18:38:57.092 INFO [stderr]    --> src/main.rs:103:5
Dec 17 18:38:57.092 INFO [stderr]     |
Dec 17 18:38:57.092 INFO [stderr] 103 |     fn conns_num(&self) -> usize {
Dec 17 18:38:57.092 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 18:38:57.092 INFO [stderr]     |
Dec 17 18:38:57.092 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 17 18:38:57.092 INFO [stderr] 
Dec 17 18:38:57.092 INFO [stderr] warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
Dec 17 18:38:57.092 INFO [stderr]  --> src/main.rs:1:12
Dec 17 18:38:57.092 INFO [stderr]   |
Dec 17 18:38:57.092 INFO [stderr] 1 | #![feature(conservative_impl_trait)]
Dec 17 18:38:57.092 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 18:38:57.092 INFO [stderr]   |
Dec 17 18:38:57.092 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 17 18:38:57.092 INFO [stderr] 
Dec 17 18:38:57.141 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.53s
Dec 17 18:38:57.736 INFO running `"docker" "inspect" "f169e4375fe2ea4861709aeeb8fc8055f3b206a234a71a351e42107c4d59bc3a"`
Dec 17 18:38:58.026 INFO running `"docker" "rm" "-f" "f169e4375fe2ea4861709aeeb8fc8055f3b206a234a71a351e42107c4d59bc3a"`
Dec 17 18:38:58.231 INFO [stdout] f169e4375fe2ea4861709aeeb8fc8055f3b206a234a71a351e42107c4d59bc3a