Dec 19 12:16:00.969 INFO checking mtmccarthy/pop3 against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 12:16:00.969 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-4/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/mtmccarthy/pop3:/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 12:16:01.146 INFO [stdout] 25a145c2494e5c5142f675742c83642408ddc080396790728d43960e4c1bc78b
Dec 19 12:16:01.148 INFO running `"docker" "start" "-a" "25a145c2494e5c5142f675742c83642408ddc080396790728d43960e4c1bc78b"`
Dec 19 12:16:02.148 INFO [stderr]     Checking pop3 v0.1.0 (/opt/crater/workdir)
Dec 19 12:16:02.368 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 12:16:02.368 INFO [stderr]   --> src/pop3/pop3client.rs:16:5
Dec 19 12:16:02.368 INFO [stderr]    |
Dec 19 12:16:02.368 INFO [stderr] 16 |     stream.flush();
Dec 19 12:16:02.368 INFO [stderr]    |     ^^^^^^^^^^^^^^^
Dec 19 12:16:02.368 INFO [stderr]    |
Dec 19 12:16:02.368 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 12:16:02.368 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 12:16:02.368 INFO [stderr] 
Dec 19 12:16:02.368 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 12:16:02.368 INFO [stderr]   --> src/pop3/pop3client.rs:42:5
Dec 19 12:16:02.368 INFO [stderr]    |
Dec 19 12:16:02.368 INFO [stderr] 42 |     stream.write(b"STAT");
Dec 19 12:16:02.368 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:16:02.368 INFO [stderr]    |
Dec 19 12:16:02.368 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 12:16:02.368 INFO [stderr] 
Dec 19 12:16:02.577 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 12:16:02.577 INFO [stderr]   --> src/pop3/pop3client.rs:16:5
Dec 19 12:16:02.577 INFO [stderr]    |
Dec 19 12:16:02.577 INFO [stderr] 16 |     stream.flush();
Dec 19 12:16:02.577 INFO [stderr]    |     ^^^^^^^^^^^^^^^
Dec 19 12:16:02.577 INFO [stderr]    |
Dec 19 12:16:02.577 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 12:16:02.577 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 12:16:02.577 INFO [stderr] 
Dec 19 12:16:02.577 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 12:16:02.577 INFO [stderr]   --> src/pop3/pop3client.rs:42:5
Dec 19 12:16:02.577 INFO [stderr]    |
Dec 19 12:16:02.577 INFO [stderr] 42 |     stream.write(b"STAT");
Dec 19 12:16:02.577 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:16:02.577 INFO [stderr]    |
Dec 19 12:16:02.577 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 12:16:02.577 INFO [stderr] 
Dec 19 12:16:02.884 INFO [stderr] warning: unused import: `pop3::pop3::pop3client::send_stat`
Dec 19 12:16:02.884 INFO [stderr]  --> src/main.rs:4:5
Dec 19 12:16:02.884 INFO [stderr]   |
Dec 19 12:16:02.884 INFO [stderr] 4 | use pop3::pop3::pop3client::send_stat;
Dec 19 12:16:02.884 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:16:02.884 INFO [stderr]   |
Dec 19 12:16:02.884 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 12:16:02.884 INFO [stderr] 
Dec 19 12:16:02.884 INFO [stderr] warning: unused import: `std::io::prelude::*`
Dec 19 12:16:02.884 INFO [stderr]  --> src/main.rs:6:5
Dec 19 12:16:02.884 INFO [stderr]   |
Dec 19 12:16:02.884 INFO [stderr] 6 | use std::io::prelude::*;
Dec 19 12:16:02.884 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 19 12:16:02.884 INFO [stderr] 
Dec 19 12:16:03.032 INFO [stderr] warning: unused import: `pop3::pop3::pop3client::send_stat`
Dec 19 12:16:03.032 INFO [stderr]  --> src/main.rs:4:5
Dec 19 12:16:03.032 INFO [stderr]   |
Dec 19 12:16:03.032 INFO [stderr] 4 | use pop3::pop3::pop3client::send_stat;
Dec 19 12:16:03.032 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:16:03.032 INFO [stderr]   |
Dec 19 12:16:03.032 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 12:16:03.032 INFO [stderr] 
Dec 19 12:16:03.032 INFO [stderr] warning: unused import: `std::io::prelude::*`
Dec 19 12:16:03.032 INFO [stderr]  --> src/main.rs:6:5
Dec 19 12:16:03.032 INFO [stderr]   |
Dec 19 12:16:03.032 INFO [stderr] 6 | use std::io::prelude::*;
Dec 19 12:16:03.032 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 19 12:16:03.032 INFO [stderr] 
Dec 19 12:16:03.130 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.99s
Dec 19 12:16:03.883 INFO running `"docker" "inspect" "25a145c2494e5c5142f675742c83642408ddc080396790728d43960e4c1bc78b"`
Dec 19 12:16:03.987 INFO running `"docker" "rm" "-f" "25a145c2494e5c5142f675742c83642408ddc080396790728d43960e4c1bc78b"`
Dec 19 12:16:04.070 INFO [stdout] 25a145c2494e5c5142f675742c83642408ddc080396790728d43960e4c1bc78b