Dec 13 09:47:21.892 INFO testing mtmccarthy/pop3 against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 13 09:47:21.892 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-3/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-alt build --frozen" "-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 13 09:47:22.371 INFO [stdout] b68219dff59ef69fa13089647a114d4f83667cec8a442058b49a7cf3e3088222
Dec 13 09:47:22.379 INFO running `"docker" "start" "-a" "b68219dff59ef69fa13089647a114d4f83667cec8a442058b49a7cf3e3088222"`
Dec 13 09:47:23.174 INFO [stderr] usermod: no changes
Dec 13 09:47:23.231 INFO [stderr]    Compiling pop3 v0.1.0 (/source)
Dec 13 09:47:23.587 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 09:47:23.587 INFO [stderr]   --> src/pop3/pop3client.rs:16:5
Dec 13 09:47:23.587 INFO [stderr]    |
Dec 13 09:47:23.587 INFO [stderr] 16 |     stream.flush();
Dec 13 09:47:23.587 INFO [stderr]    |     ^^^^^^^^^^^^^^^
Dec 13 09:47:23.587 INFO [stderr]    |
Dec 13 09:47:23.587 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 13 09:47:23.587 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 09:47:23.587 INFO [stderr] 
Dec 13 09:47:23.587 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 09:47:23.587 INFO [stderr]   --> src/pop3/pop3client.rs:42:5
Dec 13 09:47:23.587 INFO [stderr]    |
Dec 13 09:47:23.587 INFO [stderr] 42 |     stream.write(b"STAT");
Dec 13 09:47:23.587 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
Dec 13 09:47:23.587 INFO [stderr]    |
Dec 13 09:47:23.587 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 09:47:23.587 INFO [stderr] 
Dec 13 09:47:23.991 INFO [stderr] warning: unused import: `pop3::pop3::pop3client::send_stat`
Dec 13 09:47:23.991 INFO [stderr]  --> src/main.rs:4:5
Dec 13 09:47:23.991 INFO [stderr]   |
Dec 13 09:47:23.991 INFO [stderr] 4 | use pop3::pop3::pop3client::send_stat;
Dec 13 09:47:23.991 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 09:47:23.991 INFO [stderr]   |
Dec 13 09:47:23.991 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 13 09:47:23.991 INFO [stderr] 
Dec 13 09:47:23.991 INFO [stderr] warning: unused import: `std::io::prelude::*`
Dec 13 09:47:23.991 INFO [stderr]  --> src/main.rs:6:5
Dec 13 09:47:23.991 INFO [stderr]   |
Dec 13 09:47:23.991 INFO [stderr] 6 | use std::io::prelude::*;
Dec 13 09:47:23.991 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 13 09:47:23.991 INFO [stderr] 
Dec 13 09:47:24.356 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.14s
Dec 13 09:47:24.356 INFO [stderr] su: No module specific data is present
Dec 13 09:47:24.731 INFO running `"docker" "inspect" "b68219dff59ef69fa13089647a114d4f83667cec8a442058b49a7cf3e3088222"`
Dec 13 09:47:24.892 INFO running `"docker" "rm" "-f" "b68219dff59ef69fa13089647a114d4f83667cec8a442058b49a7cf3e3088222"`
Dec 13 09:47:25.042 INFO [stdout] b68219dff59ef69fa13089647a114d4f83667cec8a442058b49a7cf3e3088222
Dec 13 09:47:25.044 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-3/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-alt test --frozen --no-run" "-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 13 09:47:25.259 INFO [stdout] 852d8e95aa0faad98f37f727b5d872066379987261d7d3b63c9db9073616ec45
Dec 13 09:47:25.262 INFO running `"docker" "start" "-a" "852d8e95aa0faad98f37f727b5d872066379987261d7d3b63c9db9073616ec45"`
Dec 13 09:47:26.134 INFO [stderr] usermod: no changes
Dec 13 09:47:26.161 INFO [stderr]    Compiling pop3 v0.1.0 (/source)
Dec 13 09:47:26.455 INFO [stderr] warning: unused import: `pop3::pop3::pop3client::send_stat`
Dec 13 09:47:26.455 INFO [stderr]  --> src/main.rs:4:5
Dec 13 09:47:26.455 INFO [stderr]   |
Dec 13 09:47:26.455 INFO [stderr] 4 | use pop3::pop3::pop3client::send_stat;
Dec 13 09:47:26.455 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 09:47:26.455 INFO [stderr]   |
Dec 13 09:47:26.455 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 13 09:47:26.455 INFO [stderr] 
Dec 13 09:47:26.455 INFO [stderr] warning: unused import: `std::io::prelude::*`
Dec 13 09:47:26.455 INFO [stderr]  --> src/main.rs:6:5
Dec 13 09:47:26.455 INFO [stderr]   |
Dec 13 09:47:26.455 INFO [stderr] 6 | use std::io::prelude::*;
Dec 13 09:47:26.455 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 13 09:47:26.455 INFO [stderr] 
Dec 13 09:47:26.495 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 09:47:26.495 INFO [stderr]   --> src/pop3/pop3client.rs:16:5
Dec 13 09:47:26.495 INFO [stderr]    |
Dec 13 09:47:26.495 INFO [stderr] 16 |     stream.flush();
Dec 13 09:47:26.495 INFO [stderr]    |     ^^^^^^^^^^^^^^^
Dec 13 09:47:26.495 INFO [stderr]    |
Dec 13 09:47:26.495 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 13 09:47:26.495 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 09:47:26.495 INFO [stderr] 
Dec 13 09:47:26.495 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 09:47:26.495 INFO [stderr]   --> src/pop3/pop3client.rs:42:5
Dec 13 09:47:26.495 INFO [stderr]    |
Dec 13 09:47:26.495 INFO [stderr] 42 |     stream.write(b"STAT");
Dec 13 09:47:26.495 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
Dec 13 09:47:26.495 INFO [stderr]    |
Dec 13 09:47:26.495 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 09:47:26.495 INFO [stderr] 
Dec 13 09:47:26.983 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.81s
Dec 13 09:47:26.983 INFO [stderr] su: No module specific data is present
Dec 13 09:47:27.650 INFO running `"docker" "inspect" "852d8e95aa0faad98f37f727b5d872066379987261d7d3b63c9db9073616ec45"`
Dec 13 09:47:27.873 INFO running `"docker" "rm" "-f" "852d8e95aa0faad98f37f727b5d872066379987261d7d3b63c9db9073616ec45"`
Dec 13 09:47:27.981 INFO [stdout] 852d8e95aa0faad98f37f727b5d872066379987261d7d3b63c9db9073616ec45
Dec 13 09:47:27.984 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-3/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-alt test --frozen" "-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 13 09:47:28.163 INFO [stdout] 89b60ed61b59846d5331af5b61466bb09dea4f675af7b40e2ed8aa1146155cf4
Dec 13 09:47:28.168 INFO running `"docker" "start" "-a" "89b60ed61b59846d5331af5b61466bb09dea4f675af7b40e2ed8aa1146155cf4"`
Dec 13 09:47:28.799 INFO [stderr] usermod: no changes
Dec 13 09:47:28.823 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
Dec 13 09:47:28.823 INFO [stderr]      Running /target/debug/deps/pop3-207da64869d45360
Dec 13 09:47:28.879 INFO [stderr]      Running /target/debug/deps/pop3-890260e916858c22
Dec 13 09:47:28.879 INFO [stderr]    Doc-tests pop3
Dec 13 09:47:28.879 INFO [stdout] 
Dec 13 09:47:28.879 INFO [stdout] running 0 tests
Dec 13 09:47:28.879 INFO [stdout] 
Dec 13 09:47:28.879 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 13 09:47:28.879 INFO [stdout] 
Dec 13 09:47:28.879 INFO [stdout] 
Dec 13 09:47:28.879 INFO [stdout] running 0 tests
Dec 13 09:47:28.879 INFO [stdout] 
Dec 13 09:47:28.879 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 13 09:47:28.879 INFO [stdout] 
Dec 13 09:47:29.323 INFO [stderr] su: No module specific data is present
Dec 13 09:47:29.323 INFO [stdout] 
Dec 13 09:47:29.323 INFO [stdout] running 0 tests
Dec 13 09:47:29.323 INFO [stdout] 
Dec 13 09:47:29.323 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 13 09:47:29.323 INFO [stdout] 
Dec 13 09:47:29.795 INFO running `"docker" "inspect" "89b60ed61b59846d5331af5b61466bb09dea4f675af7b40e2ed8aa1146155cf4"`
Dec 13 09:47:30.045 INFO running `"docker" "rm" "-f" "89b60ed61b59846d5331af5b61466bb09dea4f675af7b40e2ed8aa1146155cf4"`
Dec 13 09:47:30.255 INFO [stdout] 89b60ed61b59846d5331af5b61466bb09dea4f675af7b40e2ed8aa1146155cf4