Dec 12 03:08:37.617 INFO checking DogLi/mio_test against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 03:08:37.617 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-3/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/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 03:08:38.072 INFO [stdout] d29da6ed0c62c829b77dba9d43f489bddd0e5ac3fad5b4e44c9be5e25d933486
Dec 12 03:08:38.084 INFO running `"docker" "start" "-a" "d29da6ed0c62c829b77dba9d43f489bddd0e5ac3fad5b4e44c9be5e25d933486"`
Dec 12 03:08:39.923 INFO [stderr] usermod: no changes
Dec 12 03:08:40.081 INFO [stderr]     Checking memchr v0.1.11
Dec 12 03:08:40.100 INFO [stderr]     Checking thread-id v2.0.0
Dec 12 03:08:40.718 INFO [stderr]     Checking aho-corasick v0.5.3
Dec 12 03:08:41.068 INFO [stderr]     Checking thread_local v0.2.7
Dec 12 03:08:42.230 INFO [stderr]     Checking regex v0.1.80
Dec 12 03:08:44.701 INFO [stderr]     Checking env_logger v0.3.5
Dec 12 03:08:45.654 INFO [stderr]     Checking mio_test v0.1.0 (/source)
Dec 12 03:08:48.464 INFO [stderr] warning: unused `#[macro_use]` import
Dec 12 03:08:48.464 INFO [stderr]  --> src/client.rs:2:1
Dec 12 03:08:48.464 INFO [stderr]   |
Dec 12 03:08:48.464 INFO [stderr] 2 | #[macro_use] extern crate log;
Dec 12 03:08:48.464 INFO [stderr]   | ^^^^^^^^^^^^
Dec 12 03:08:48.480 INFO [stderr]   |
Dec 12 03:08:48.480 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 03:08:48.480 INFO [stderr] 
Dec 12 03:08:48.701 INFO [stderr] warning: unused variable: `n`
Dec 12 03:08:48.701 INFO [stderr]   --> src/client.rs:17:12
Dec 12 03:08:48.701 INFO [stderr]    |
Dec 12 03:08:48.701 INFO [stderr] 17 |         Ok(n) => {
Dec 12 03:08:48.701 INFO [stderr]    |            ^ help: consider using `_n` instead
Dec 12 03:08:48.701 INFO [stderr]    |
Dec 12 03:08:48.701 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 12 03:08:48.701 INFO [stderr] 
Dec 12 03:08:48.878 INFO [stderr] warning: unused `#[macro_use]` import
Dec 12 03:08:48.878 INFO [stderr]  --> src/client.rs:2:1
Dec 12 03:08:48.878 INFO [stderr]   |
Dec 12 03:08:48.878 INFO [stderr] 2 | #[macro_use] extern crate log;
Dec 12 03:08:48.878 INFO [stderr]   | ^^^^^^^^^^^^
Dec 12 03:08:48.878 INFO [stderr]   |
Dec 12 03:08:48.878 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 03:08:48.878 INFO [stderr] 
Dec 12 03:08:48.984 INFO [stderr] warning: unused variable: `n`
Dec 12 03:08:48.984 INFO [stderr]   --> src/client.rs:17:12
Dec 12 03:08:48.984 INFO [stderr]    |
Dec 12 03:08:48.984 INFO [stderr] 17 |         Ok(n) => {
Dec 12 03:08:48.984 INFO [stderr]    |            ^ help: consider using `_n` instead
Dec 12 03:08:48.984 INFO [stderr]    |
Dec 12 03:08:48.984 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 12 03:08:48.984 INFO [stderr] 
Dec 12 03:08:49.891 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.94s
Dec 12 03:08:49.898 INFO [stderr] su: No module specific data is present
Dec 12 03:08:51.176 INFO running `"docker" "inspect" "d29da6ed0c62c829b77dba9d43f489bddd0e5ac3fad5b4e44c9be5e25d933486"`
Dec 12 03:08:51.512 INFO running `"docker" "rm" "-f" "d29da6ed0c62c829b77dba9d43f489bddd0e5ac3fad5b4e44c9be5e25d933486"`
Dec 12 03:08:51.904 INFO [stdout] d29da6ed0c62c829b77dba9d43f489bddd0e5ac3fad5b4e44c9be5e25d933486