Dec 19 07:25:02.148 INFO checking tera3939/rustcp_client against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 07:25:02.148 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-0/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/tera3939/rustcp_client:/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 07:25:02.720 INFO [stdout] 9219844f4f4e1e9dc737508144bbd16fdc904e7f261cc5c210010d07bdbddc59
Dec 19 07:25:02.722 INFO running `"docker" "start" "-a" "9219844f4f4e1e9dc737508144bbd16fdc904e7f261cc5c210010d07bdbddc59"`
Dec 19 07:25:04.396 INFO [stderr]     Checking rustcp_client v0.1.0 (/opt/crater/workdir)
Dec 19 07:25:04.768 INFO [stderr] warning: unused variable: `buffer`
Dec 19 07:25:04.768 INFO [stderr]   --> src/main.rs:12:13
Dec 19 07:25:04.768 INFO [stderr]    |
Dec 19 07:25:04.768 INFO [stderr] 12 |     let mut buffer = String::new();
Dec 19 07:25:04.768 INFO [stderr]    |             ^^^^^^ help: consider using `_buffer` instead
Dec 19 07:25:04.768 INFO [stderr] warning: unused variable: `buffer`
Dec 19 07:25:04.768 INFO [stderr]   --> src/main.rs:12:13
Dec 19 07:25:04.768 INFO [stderr]    |
Dec 19 07:25:04.768 INFO [stderr] 12 |     let mut buffer = String::new();
Dec 19 07:25:04.768 INFO [stderr]    |             ^^^^^^ help: consider using `_buffer` instead
Dec 19 07:25:04.768 INFO [stderr]    |
Dec 19 07:25:04.768 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 07:25:04.768 INFO [stderr] 
Dec 19 07:25:04.768 INFO [stderr] warning: variable does not need to be mutable
Dec 19 07:25:04.768 INFO [stderr]   --> src/main.rs:12:9
Dec 19 07:25:04.768 INFO [stderr]    |
Dec 19 07:25:04.768 INFO [stderr] 12 |     let mut buffer = String::new();
Dec 19 07:25:04.768 INFO [stderr]    |         ----^^^^^^
Dec 19 07:25:04.768 INFO [stderr]    |         |
Dec 19 07:25:04.768 INFO [stderr]    |         help: remove this `mut`
Dec 19 07:25:04.768 INFO [stderr]    |
Dec 19 07:25:04.768 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 07:25:04.768 INFO [stderr] 
Dec 19 07:25:04.772 INFO [stderr]    |
Dec 19 07:25:04.772 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 07:25:04.776 INFO [stderr] 
Dec 19 07:25:04.776 INFO [stderr] warning: variable does not need to be mutable
Dec 19 07:25:04.776 INFO [stderr]   --> src/main.rs:12:9
Dec 19 07:25:04.776 INFO [stderr]    |
Dec 19 07:25:04.776 INFO [stderr] 12 |     let mut buffer = String::new();
Dec 19 07:25:04.776 INFO [stderr]    |         ----^^^^^^
Dec 19 07:25:04.776 INFO [stderr]    |         |
Dec 19 07:25:04.776 INFO [stderr]    |         help: remove this `mut`
Dec 19 07:25:04.788 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 07:25:04.788 INFO [stderr]   --> src/main.rs:18:21
Dec 19 07:25:04.788 INFO [stderr]    |
Dec 19 07:25:04.788 INFO [stderr] 18 |                     stream.write(buffer.as_bytes());
Dec 19 07:25:04.788 INFO [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 07:25:04.788 INFO [stderr]    |
Dec 19 07:25:04.788 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 07:25:04.788 INFO [stderr] 
Dec 19 07:25:04.804 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 07:25:04.804 INFO [stderr]   --> src/main.rs:18:21
Dec 19 07:25:04.804 INFO [stderr]    |
Dec 19 07:25:04.804 INFO [stderr] 18 |                     stream.write(buffer.as_bytes());
Dec 19 07:25:04.804 INFO [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 07:25:04.804 INFO [stderr]    |
Dec 19 07:25:04.804 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 07:25:04.804 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 07:25:04.804 INFO [stderr] 
Dec 19 07:25:04.804 INFO [stderr]    |
Dec 19 07:25:04.804 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 07:25:04.804 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 07:25:04.804 INFO [stderr] 
Dec 19 07:25:04.829 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.49s
Dec 19 07:25:05.690 INFO running `"docker" "inspect" "9219844f4f4e1e9dc737508144bbd16fdc904e7f261cc5c210010d07bdbddc59"`
Dec 19 07:25:05.922 INFO running `"docker" "rm" "-f" "9219844f4f4e1e9dc737508144bbd16fdc904e7f261cc5c210010d07bdbddc59"`
Dec 19 07:25:06.248 INFO [stdout] 9219844f4f4e1e9dc737508144bbd16fdc904e7f261cc5c210010d07bdbddc59