Dec 04 13:40:29.844 INFO checking mtmccarthy/pop3 against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 13:40:29.844 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-2/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/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 +1df97983eb2057dc6a8f7eb364e263b51ae23230-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 13:40:30.205 INFO [stdout] eee10eda8d1a452385b6181a3d809858e69b17b635d63e7d52f1cb437f03a1a9
Dec 04 13:40:30.213 INFO running `"docker" "start" "-a" "eee10eda8d1a452385b6181a3d809858e69b17b635d63e7d52f1cb437f03a1a9"`
Dec 04 13:40:31.659 INFO [stderr] usermod: no changes
Dec 04 13:40:31.731 INFO [stderr]     Checking pop3 v0.1.0 (/source)
Dec 04 13:40:32.143 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 13:40:32.143 INFO [stderr]   --> src/pop3/pop3client.rs:16:5
Dec 04 13:40:32.143 INFO [stderr]    |
Dec 04 13:40:32.143 INFO [stderr] 16 |     stream.flush();
Dec 04 13:40:32.143 INFO [stderr]    |     ^^^^^^^^^^^^^^^
Dec 04 13:40:32.143 INFO [stderr]    |
Dec 04 13:40:32.143 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 04 13:40:32.143 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 13:40:32.143 INFO [stderr] 
Dec 04 13:40:32.143 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 13:40:32.143 INFO [stderr]   --> src/pop3/pop3client.rs:42:5
Dec 04 13:40:32.143 INFO [stderr]    |
Dec 04 13:40:32.143 INFO [stderr] 42 |     stream.write(b"STAT");
Dec 04 13:40:32.143 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
Dec 04 13:40:32.143 INFO [stderr]    |
Dec 04 13:40:32.143 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 13:40:32.143 INFO [stderr] 
Dec 04 13:40:32.355 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 13:40:32.355 INFO [stderr]   --> src/pop3/pop3client.rs:16:5
Dec 04 13:40:32.355 INFO [stderr]    |
Dec 04 13:40:32.355 INFO [stderr] 16 |     stream.flush();
Dec 04 13:40:32.355 INFO [stderr]    |     ^^^^^^^^^^^^^^^
Dec 04 13:40:32.355 INFO [stderr]    |
Dec 04 13:40:32.355 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 04 13:40:32.355 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 13:40:32.355 INFO [stderr] 
Dec 04 13:40:32.355 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 13:40:32.355 INFO [stderr]   --> src/pop3/pop3client.rs:42:5
Dec 04 13:40:32.355 INFO [stderr]    |
Dec 04 13:40:32.355 INFO [stderr] 42 |     stream.write(b"STAT");
Dec 04 13:40:32.355 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
Dec 04 13:40:32.355 INFO [stderr]    |
Dec 04 13:40:32.355 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 13:40:32.355 INFO [stderr] 
Dec 04 13:40:32.615 INFO [stderr] warning: unused import: `pop3::pop3::pop3client::send_stat`
Dec 04 13:40:32.615 INFO [stderr]  --> src/main.rs:4:5
Dec 04 13:40:32.615 INFO [stderr]   |
Dec 04 13:40:32.615 INFO [stderr] 4 | use pop3::pop3::pop3client::send_stat;
Dec 04 13:40:32.615 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 13:40:32.615 INFO [stderr]   |
Dec 04 13:40:32.615 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 13:40:32.615 INFO [stderr] 
Dec 04 13:40:32.615 INFO [stderr] warning: unused import: `std::io::prelude::*`
Dec 04 13:40:32.615 INFO [stderr]  --> src/main.rs:6:5
Dec 04 13:40:32.615 INFO [stderr]   |
Dec 04 13:40:32.615 INFO [stderr] 6 | use std::io::prelude::*;
Dec 04 13:40:32.615 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 04 13:40:32.615 INFO [stderr] 
Dec 04 13:40:32.683 INFO [stderr] warning: unused import: `pop3::pop3::pop3client::send_stat`
Dec 04 13:40:32.683 INFO [stderr]  --> src/main.rs:4:5
Dec 04 13:40:32.683 INFO [stderr]   |
Dec 04 13:40:32.683 INFO [stderr] 4 | use pop3::pop3::pop3client::send_stat;
Dec 04 13:40:32.683 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 13:40:32.683 INFO [stderr]   |
Dec 04 13:40:32.683 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 13:40:32.683 INFO [stderr] 
Dec 04 13:40:32.683 INFO [stderr] warning: unused import: `std::io::prelude::*`
Dec 04 13:40:32.683 INFO [stderr]  --> src/main.rs:6:5
Dec 04 13:40:32.683 INFO [stderr]   |
Dec 04 13:40:32.683 INFO [stderr] 6 | use std::io::prelude::*;
Dec 04 13:40:32.683 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 04 13:40:32.683 INFO [stderr] 
Dec 04 13:40:32.815 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.12s
Dec 04 13:40:32.815 INFO [stderr] su: No module specific data is present
Dec 04 13:40:33.707 INFO running `"docker" "inspect" "eee10eda8d1a452385b6181a3d809858e69b17b635d63e7d52f1cb437f03a1a9"`
Dec 04 13:40:33.957 INFO running `"docker" "rm" "-f" "eee10eda8d1a452385b6181a3d809858e69b17b635d63e7d52f1cb437f03a1a9"`
Dec 04 13:40:34.175 INFO [stdout] eee10eda8d1a452385b6181a3d809858e69b17b635d63e7d52f1cb437f03a1a9