Dec 19 10:43:26.488 INFO checking privatemani/basic_server against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 10:43:26.488 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-1/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/privatemani/basic_server:/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 10:43:26.637 INFO [stdout] c625ef5c2ee78a3230930b4bf51ccc81ffcaf4b73536e9e394879885d99d8abd
Dec 19 10:43:26.642 INFO running `"docker" "start" "-a" "c625ef5c2ee78a3230930b4bf51ccc81ffcaf4b73536e9e394879885d99d8abd"`
Dec 19 10:43:27.306 INFO [stderr]     Checking network_server v0.1.0 (/opt/crater/workdir)
Dec 19 10:43:27.424 INFO [stderr] warning: unused import: `TcpStream`
Dec 19 10:43:27.424 INFO [stderr]  --> src/main.rs:1:16
Dec 19 10:43:27.424 INFO [stderr]   |
Dec 19 10:43:27.424 INFO [stderr] 1 | use std::net::{TcpStream, TcpListener};
Dec 19 10:43:27.424 INFO [stderr]   |                ^^^^^^^^^
Dec 19 10:43:27.424 INFO [stderr]   |
Dec 19 10:43:27.424 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 10:43:27.424 INFO [stderr] 
Dec 19 10:43:27.424 INFO [stderr] warning: unused import: `Read`
Dec 19 10:43:27.424 INFO [stderr]  --> src/main.rs:2:22
Dec 19 10:43:27.424 INFO [stderr]   |
Dec 19 10:43:27.424 INFO [stderr] 2 | use std::io::{Write, Read};
Dec 19 10:43:27.424 INFO [stderr]   |                      ^^^^
Dec 19 10:43:27.424 INFO [stderr] 
Dec 19 10:43:27.424 INFO [stderr] warning: unused import: `std::net::Shutdown`
Dec 19 10:43:27.424 INFO [stderr]  --> src/main.rs:3:5
Dec 19 10:43:27.424 INFO [stderr]   |
Dec 19 10:43:27.424 INFO [stderr] 3 | use std::net::Shutdown;
Dec 19 10:43:27.424 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^
Dec 19 10:43:27.424 INFO [stderr] 
Dec 19 10:43:27.432 INFO [stderr] warning: unused import: `TcpStream`
Dec 19 10:43:27.432 INFO [stderr]  --> src/main.rs:1:16
Dec 19 10:43:27.432 INFO [stderr]   |
Dec 19 10:43:27.432 INFO [stderr] 1 | use std::net::{TcpStream, TcpListener};
Dec 19 10:43:27.432 INFO [stderr]   |                ^^^^^^^^^
Dec 19 10:43:27.432 INFO [stderr]   |
Dec 19 10:43:27.432 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 10:43:27.432 INFO [stderr] 
Dec 19 10:43:27.432 INFO [stderr] warning: unused import: `Read`
Dec 19 10:43:27.432 INFO [stderr]  --> src/main.rs:2:22
Dec 19 10:43:27.432 INFO [stderr]   |
Dec 19 10:43:27.432 INFO [stderr] 2 | use std::io::{Write, Read};
Dec 19 10:43:27.432 INFO [stderr]   |                      ^^^^
Dec 19 10:43:27.432 INFO [stderr] 
Dec 19 10:43:27.432 INFO [stderr] warning: unused import: `std::net::Shutdown`
Dec 19 10:43:27.432 INFO [stderr]  --> src/main.rs:3:5
Dec 19 10:43:27.432 INFO [stderr]   |
Dec 19 10:43:27.432 INFO [stderr] 3 | use std::net::Shutdown;
Dec 19 10:43:27.432 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^
Dec 19 10:43:27.432 INFO [stderr] 
Dec 19 10:43:27.475 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.18s
Dec 19 10:43:27.703 INFO running `"docker" "inspect" "c625ef5c2ee78a3230930b4bf51ccc81ffcaf4b73536e9e394879885d99d8abd"`
Dec 19 10:43:27.766 INFO running `"docker" "rm" "-f" "c625ef5c2ee78a3230930b4bf51ccc81ffcaf4b73536e9e394879885d99d8abd"`
Dec 19 10:43:27.858 INFO [stdout] c625ef5c2ee78a3230930b4bf51ccc81ffcaf4b73536e9e394879885d99d8abd