Dec 11 12:34:34.271 INFO checking nooberfsh/heartbeat against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 11 12:34:34.271 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-2/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/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 +aa9aa79c3c583aab59ac9134542d60a780c35e2e-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 11 12:34:34.626 INFO [stdout] c6c30d16f68053cdc476cf6cc1427b6b588bd885a8bd0ef5bec2c2f56a07c439
Dec 11 12:34:34.630 INFO running `"docker" "start" "-a" "c6c30d16f68053cdc476cf6cc1427b6b588bd885a8bd0ef5bec2c2f56a07c439"`
Dec 11 12:34:35.848 INFO [stderr] usermod: no changes
Dec 11 12:34:36.044 INFO [stderr]     Checking test-tokio v0.1.0 (/source)
Dec 11 12:34:36.812 INFO [stderr] warning: unused import: `tokio_io::AsyncRead`
Dec 11 12:34:36.812 INFO [stderr]   --> src/main.rs:19:5
Dec 11 12:34:36.812 INFO [stderr]    |
Dec 11 12:34:36.812 INFO [stderr] 19 | use tokio_io::AsyncRead;
Dec 11 12:34:36.812 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 11 12:34:36.812 INFO [stderr]    |
Dec 11 12:34:36.812 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 11 12:34:36.812 INFO [stderr] 
Dec 11 12:34:37.048 INFO [stderr] warning: method is never used: `conns_num`
Dec 11 12:34:37.048 INFO [stderr]    --> src/main.rs:103:5
Dec 11 12:34:37.048 INFO [stderr]     |
Dec 11 12:34:37.048 INFO [stderr] 103 |     fn conns_num(&self) -> usize {
Dec 11 12:34:37.048 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 12:34:37.060 INFO [stderr]     |
Dec 11 12:34:37.060 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 11 12:34:37.060 INFO [stderr] 
Dec 11 12:34:37.060 INFO [stderr] warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
Dec 11 12:34:37.060 INFO [stderr]  --> src/main.rs:1:12
Dec 11 12:34:37.060 INFO [stderr]   |
Dec 11 12:34:37.060 INFO [stderr] 1 | #![feature(conservative_impl_trait)]
Dec 11 12:34:37.060 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 12:34:37.060 INFO [stderr]   |
Dec 11 12:34:37.060 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 11 12:34:37.060 INFO [stderr] 
Dec 11 12:34:37.060 INFO [stderr] warning: unused import: `tokio_io::AsyncRead`
Dec 11 12:34:37.060 INFO [stderr]   --> src/main.rs:19:5
Dec 11 12:34:37.060 INFO [stderr]    |
Dec 11 12:34:37.060 INFO [stderr] 19 | use tokio_io::AsyncRead;
Dec 11 12:34:37.060 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 11 12:34:37.060 INFO [stderr]    |
Dec 11 12:34:37.060 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 11 12:34:37.060 INFO [stderr] 
Dec 11 12:34:37.191 INFO [stderr] warning: method is never used: `conns_num`
Dec 11 12:34:37.192 INFO [stderr]    --> src/main.rs:103:5
Dec 11 12:34:37.192 INFO [stderr]     |
Dec 11 12:34:37.192 INFO [stderr] 103 |     fn conns_num(&self) -> usize {
Dec 11 12:34:37.192 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 12:34:37.192 INFO [stderr]     |
Dec 11 12:34:37.192 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 11 12:34:37.192 INFO [stderr] 
Dec 11 12:34:37.192 INFO [stderr] warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
Dec 11 12:34:37.192 INFO [stderr]  --> src/main.rs:1:12
Dec 11 12:34:37.192 INFO [stderr]   |
Dec 11 12:34:37.192 INFO [stderr] 1 | #![feature(conservative_impl_trait)]
Dec 11 12:34:37.192 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 12:34:37.192 INFO [stderr]   |
Dec 11 12:34:37.192 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 11 12:34:37.192 INFO [stderr] 
Dec 11 12:34:37.214 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.35s
Dec 11 12:34:37.225 INFO [stderr] su: No module specific data is present
Dec 11 12:34:38.374 INFO running `"docker" "inspect" "c6c30d16f68053cdc476cf6cc1427b6b588bd885a8bd0ef5bec2c2f56a07c439"`
Dec 11 12:34:38.656 INFO running `"docker" "rm" "-f" "c6c30d16f68053cdc476cf6cc1427b6b588bd885a8bd0ef5bec2c2f56a07c439"`
Dec 11 12:34:38.912 INFO [stdout] c6c30d16f68053cdc476cf6cc1427b6b588bd885a8bd0ef5bec2c2f56a07c439