Dec 19 12:16:00.937 INFO checking mtmccarthy/pop3 against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 12:16:00.937 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-6/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 12:16:01.110 INFO [stdout] ba67b1f1cb8e8e8729d723e0a80217da56675ce009fe29b55ae06fe1f99f76b2
Dec 19 12:16:01.113 INFO running `"docker" "start" "-a" "ba67b1f1cb8e8e8729d723e0a80217da56675ce009fe29b55ae06fe1f99f76b2"`
Dec 19 12:16:02.020 INFO [stderr]     Checking pop3 v0.1.0 (/opt/crater/workdir)
Dec 19 12:16:02.256 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 12:16:02.256 INFO [stderr]   --> src/pop3/pop3client.rs:16:5
Dec 19 12:16:02.256 INFO [stderr]    |
Dec 19 12:16:02.256 INFO [stderr] 16 |     stream.flush();
Dec 19 12:16:02.256 INFO [stderr]    |     ^^^^^^^^^^^^^^^
Dec 19 12:16:02.256 INFO [stderr]    |
Dec 19 12:16:02.256 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 12:16:02.256 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 12:16:02.256 INFO [stderr] 
Dec 19 12:16:02.260 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 12:16:02.260 INFO [stderr]   --> src/pop3/pop3client.rs:42:5
Dec 19 12:16:02.260 INFO [stderr]    |
Dec 19 12:16:02.260 INFO [stderr] 42 |     stream.write(b"STAT");
Dec 19 12:16:02.260 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:16:02.260 INFO [stderr]    |
Dec 19 12:16:02.260 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 12:16:02.260 INFO [stderr] 
Dec 19 12:16:02.352 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 12:16:02.352 INFO [stderr]   --> src/pop3/pop3client.rs:16:5
Dec 19 12:16:02.352 INFO [stderr]    |
Dec 19 12:16:02.352 INFO [stderr] 16 |     stream.flush();
Dec 19 12:16:02.352 INFO [stderr]    |     ^^^^^^^^^^^^^^^
Dec 19 12:16:02.352 INFO [stderr]    |
Dec 19 12:16:02.352 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 12:16:02.352 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 12:16:02.352 INFO [stderr] 
Dec 19 12:16:02.352 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 12:16:02.352 INFO [stderr]   --> src/pop3/pop3client.rs:42:5
Dec 19 12:16:02.352 INFO [stderr]    |
Dec 19 12:16:02.352 INFO [stderr] 42 |     stream.write(b"STAT");
Dec 19 12:16:02.352 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:16:02.352 INFO [stderr]    |
Dec 19 12:16:02.352 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 12:16:02.352 INFO [stderr] 
Dec 19 12:16:02.460 INFO [stderr] warning: unused import: `pop3::pop3::pop3client::send_stat`
Dec 19 12:16:02.460 INFO [stderr]  --> src/main.rs:4:5
Dec 19 12:16:02.460 INFO [stderr]   |
Dec 19 12:16:02.460 INFO [stderr] 4 | use pop3::pop3::pop3client::send_stat;
Dec 19 12:16:02.460 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:16:02.460 INFO [stderr]   |
Dec 19 12:16:02.460 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 12:16:02.460 INFO [stderr] 
Dec 19 12:16:02.460 INFO [stderr] warning: unused import: `std::io::prelude::*`
Dec 19 12:16:02.460 INFO [stderr]  --> src/main.rs:6:5
Dec 19 12:16:02.460 INFO [stderr]   |
Dec 19 12:16:02.460 INFO [stderr] 6 | use std::io::prelude::*;
Dec 19 12:16:02.460 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 19 12:16:02.460 INFO [stderr] 
Dec 19 12:16:02.460 INFO [stderr] warning: unused import: `pop3::pop3::pop3client::send_stat`
Dec 19 12:16:02.460 INFO [stderr]  --> src/main.rs:4:5
Dec 19 12:16:02.460 INFO [stderr]   |
Dec 19 12:16:02.460 INFO [stderr] 4 | use pop3::pop3::pop3client::send_stat;
Dec 19 12:16:02.460 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:16:02.460 INFO [stderr]   |
Dec 19 12:16:02.460 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 12:16:02.460 INFO [stderr] 
Dec 19 12:16:02.460 INFO [stderr] warning: unused import: `std::io::prelude::*`
Dec 19 12:16:02.460 INFO [stderr]  --> src/main.rs:6:5
Dec 19 12:16:02.460 INFO [stderr]   |
Dec 19 12:16:02.461 INFO [stderr] 6 | use std::io::prelude::*;
Dec 19 12:16:02.461 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 19 12:16:02.461 INFO [stderr] 
Dec 19 12:16:02.528 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.52s
Dec 19 12:16:03.447 INFO running `"docker" "inspect" "ba67b1f1cb8e8e8729d723e0a80217da56675ce009fe29b55ae06fe1f99f76b2"`
Dec 19 12:16:03.710 INFO running `"docker" "rm" "-f" "ba67b1f1cb8e8e8729d723e0a80217da56675ce009fe29b55ae06fe1f99f76b2"`
Dec 19 12:16:03.838 INFO [stdout] ba67b1f1cb8e8e8729d723e0a80217da56675ce009fe29b55ae06fe1f99f76b2