Dec 05 10:23:28.083 INFO checking mio-utun-0.6.19 against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 05 10:23:28.083 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-0/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/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 05 10:23:28.539 INFO [stdout] 061491f1219a5a1b07ac5783a93c5badd6d7ed9a3f2fd87eccf7b99bcebb2bf0
Dec 05 10:23:28.545 INFO running `"docker" "start" "-a" "061491f1219a5a1b07ac5783a93c5badd6d7ed9a3f2fd87eccf7b99bcebb2bf0"`
Dec 05 10:23:29.056 INFO [stderr] usermod: no changes
Dec 05 10:23:29.119 INFO [stderr]     Checking mio-utun v0.6.19 (/source)
Dec 05 10:23:31.734 INFO [stderr] warning: unused import: `Write`
Dec 05 10:23:31.734 INFO [stderr]  --> tests/echo.rs:4:21
Dec 05 10:23:31.734 INFO [stderr]   |
Dec 05 10:23:31.734 INFO [stderr] 4 | use std::io::{self, Write, Read};
Dec 05 10:23:31.734 INFO [stderr]   |                     ^^^^^
Dec 05 10:23:31.734 INFO [stderr]   |
Dec 05 10:23:31.734 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 05 10:23:31.734 INFO [stderr] 
Dec 05 10:23:31.734 INFO [stderr] warning: unused import: `std::io::ErrorKind::WouldBlock`
Dec 05 10:23:31.734 INFO [stderr]  --> tests/echo.rs:5:5
Dec 05 10:23:31.734 INFO [stderr]   |
Dec 05 10:23:31.734 INFO [stderr] 5 | use std::io::ErrorKind::WouldBlock;
Dec 05 10:23:31.734 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 10:23:31.734 INFO [stderr] 
Dec 05 10:23:31.734 INFO [stderr] warning: unused macro definition
Dec 05 10:23:31.734 INFO [stderr]   --> tests/echo.rs:10:1
Dec 05 10:23:31.734 INFO [stderr]    |
Dec 05 10:23:31.734 INFO [stderr] 10 | / macro_rules! t {
Dec 05 10:23:31.734 INFO [stderr] 11 | |     ($e:expr) => (match $e {
Dec 05 10:23:31.734 INFO [stderr] 12 | |         Ok(e) => e,
Dec 05 10:23:31.734 INFO [stderr] 13 | |         Err(e) => panic!("{} failed with {}", stringify!($e), e),
Dec 05 10:23:31.734 INFO [stderr] 14 | |     })
Dec 05 10:23:31.734 INFO [stderr] 15 | | }
Dec 05 10:23:31.735 INFO [stderr]    | |_^
Dec 05 10:23:31.735 INFO [stderr]    |
Dec 05 10:23:31.735 INFO [stderr]    = note: #[warn(unused_macros)] on by default
Dec 05 10:23:31.735 INFO [stderr] 
Dec 05 10:23:31.793 INFO [stderr] warning: constant item is never used: `SERVER`
Dec 05 10:23:31.793 INFO [stderr]   --> tests/echo.rs:19:5
Dec 05 10:23:31.793 INFO [stderr]    |
Dec 05 10:23:31.793 INFO [stderr] 19 |     const SERVER: Token = Token(0);
Dec 05 10:23:31.793 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 10:23:31.793 INFO [stderr]    |
Dec 05 10:23:31.793 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 05 10:23:31.793 INFO [stderr] 
Dec 05 10:23:31.823 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.75s
Dec 05 10:23:31.830 INFO [stderr] su: No module specific data is present
Dec 05 10:23:32.411 INFO running `"docker" "inspect" "061491f1219a5a1b07ac5783a93c5badd6d7ed9a3f2fd87eccf7b99bcebb2bf0"`
Dec 05 10:23:32.689 INFO running `"docker" "rm" "-f" "061491f1219a5a1b07ac5783a93c5badd6d7ed9a3f2fd87eccf7b99bcebb2bf0"`
Dec 05 10:23:33.047 INFO [stdout] 061491f1219a5a1b07ac5783a93c5badd6d7ed9a3f2fd87eccf7b99bcebb2bf0