Dec 04 08:51:27.518 INFO checking tera3939/rustcp_client against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 08:51:27.518 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-3/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/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 08:51:28.139 INFO [stdout] c749bb09dfae1d16628c3e1b9d200a45a4bfd1ad99d67e505787aecebc36968e
Dec 04 08:51:28.147 INFO running `"docker" "start" "-a" "c749bb09dfae1d16628c3e1b9d200a45a4bfd1ad99d67e505787aecebc36968e"`
Dec 04 08:51:29.079 INFO [stderr] usermod: no changes
Dec 04 08:51:29.136 INFO [stderr]     Checking rustcp_client v0.1.0 (/source)
Dec 04 08:51:29.311 INFO [stderr] warning: unused variable: `buffer`
Dec 04 08:51:29.311 INFO [stderr]   --> src/main.rs:12:13
Dec 04 08:51:29.311 INFO [stderr]    |
Dec 04 08:51:29.311 INFO [stderr] 12 |     let mut buffer = String::new();
Dec 04 08:51:29.311 INFO [stderr]    |             ^^^^^^ help: consider using `_buffer` instead
Dec 04 08:51:29.311 INFO [stderr]    |
Dec 04 08:51:29.311 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 04 08:51:29.311 INFO [stderr] 
Dec 04 08:51:29.311 INFO [stderr] warning: variable does not need to be mutable
Dec 04 08:51:29.311 INFO [stderr]   --> src/main.rs:12:9
Dec 04 08:51:29.311 INFO [stderr]    |
Dec 04 08:51:29.311 INFO [stderr] 12 |     let mut buffer = String::new();
Dec 04 08:51:29.311 INFO [stderr]    |         ----^^^^^^
Dec 04 08:51:29.311 INFO [stderr]    |         |
Dec 04 08:51:29.311 INFO [stderr]    |         help: remove this `mut`
Dec 04 08:51:29.311 INFO [stderr]    |
Dec 04 08:51:29.311 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 04 08:51:29.311 INFO [stderr] 
Dec 04 08:51:29.319 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 08:51:29.319 INFO [stderr]   --> src/main.rs:18:21
Dec 04 08:51:29.319 INFO [stderr]    |
Dec 04 08:51:29.319 INFO [stderr] 18 |                     stream.write(buffer.as_bytes());
Dec 04 08:51:29.319 INFO [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 08:51:29.319 INFO [stderr]    |
Dec 04 08:51:29.319 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 04 08:51:29.319 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 08:51:29.319 INFO [stderr] 
Dec 04 08:51:29.333 INFO [stderr] warning: unused variable: `buffer`
Dec 04 08:51:29.333 INFO [stderr]   --> src/main.rs:12:13
Dec 04 08:51:29.333 INFO [stderr]    |
Dec 04 08:51:29.333 INFO [stderr] 12 |     let mut buffer = String::new();
Dec 04 08:51:29.333 INFO [stderr]    |             ^^^^^^ help: consider using `_buffer` instead
Dec 04 08:51:29.333 INFO [stderr]    |
Dec 04 08:51:29.333 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 04 08:51:29.333 INFO [stderr] 
Dec 04 08:51:29.342 INFO [stderr] warning: variable does not need to be mutable
Dec 04 08:51:29.342 INFO [stderr]   --> src/main.rs:12:9
Dec 04 08:51:29.342 INFO [stderr]    |
Dec 04 08:51:29.342 INFO [stderr] 12 |     let mut buffer = String::new();
Dec 04 08:51:29.342 INFO [stderr]    |         ----^^^^^^
Dec 04 08:51:29.342 INFO [stderr]    |         |
Dec 04 08:51:29.342 INFO [stderr]    |         help: remove this `mut`
Dec 04 08:51:29.342 INFO [stderr]    |
Dec 04 08:51:29.342 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 04 08:51:29.342 INFO [stderr] 
Dec 04 08:51:29.355 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 08:51:29.355 INFO [stderr]   --> src/main.rs:18:21
Dec 04 08:51:29.355 INFO [stderr]    |
Dec 04 08:51:29.355 INFO [stderr] 18 |                     stream.write(buffer.as_bytes());
Dec 04 08:51:29.355 INFO [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 08:51:29.355 INFO [stderr]    |
Dec 04 08:51:29.355 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 04 08:51:29.355 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 08:51:29.355 INFO [stderr] 
Dec 04 08:51:29.374 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.26s
Dec 04 08:51:29.374 INFO [stderr] su: No module specific data is present
Dec 04 08:51:29.764 INFO running `"docker" "inspect" "c749bb09dfae1d16628c3e1b9d200a45a4bfd1ad99d67e505787aecebc36968e"`
Dec 04 08:51:29.937 INFO running `"docker" "rm" "-f" "c749bb09dfae1d16628c3e1b9d200a45a4bfd1ad99d67e505787aecebc36968e"`
Dec 04 08:51:30.018 INFO [stdout] c749bb09dfae1d16628c3e1b9d200a45a4bfd1ad99d67e505787aecebc36968e