Dec 11 08:04:33.949 INFO checking tera3939/rustcp_client against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 11 08:04:33.950 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-4/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/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 +aa9aa79c3c583aab59ac9134542d60a780c35e2e-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 11 08:04:34.274 INFO [stdout] d15f3cdfa0f15232ce5d8eadd7a3277453c628da710997464cdd96cd71557f47
Dec 11 08:04:34.278 INFO running `"docker" "start" "-a" "d15f3cdfa0f15232ce5d8eadd7a3277453c628da710997464cdd96cd71557f47"`
Dec 11 08:04:35.876 INFO [stderr] usermod: no changes
Dec 11 08:04:35.924 INFO [stderr]     Checking rustcp_client v0.1.0 (/source)
Dec 11 08:04:36.240 INFO [stderr] warning: unused variable: `buffer`
Dec 11 08:04:36.240 INFO [stderr]   --> src/main.rs:12:13
Dec 11 08:04:36.240 INFO [stderr]    |
Dec 11 08:04:36.240 INFO [stderr] 12 |     let mut buffer = String::new();
Dec 11 08:04:36.240 INFO [stderr]    |             ^^^^^^ help: consider using `_buffer` instead
Dec 11 08:04:36.240 INFO [stderr]    |
Dec 11 08:04:36.240 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 08:04:36.240 INFO [stderr] 
Dec 11 08:04:36.252 INFO [stderr] warning: variable does not need to be mutable
Dec 11 08:04:36.252 INFO [stderr]   --> src/main.rs:12:9
Dec 11 08:04:36.252 INFO [stderr]    |
Dec 11 08:04:36.252 INFO [stderr] 12 |     let mut buffer = String::new();
Dec 11 08:04:36.252 INFO [stderr]    |         ----^^^^^^
Dec 11 08:04:36.252 INFO [stderr]    |         |
Dec 11 08:04:36.252 INFO [stderr]    |         help: remove this `mut`
Dec 11 08:04:36.252 INFO [stderr]    |
Dec 11 08:04:36.252 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 11 08:04:36.252 INFO [stderr] 
Dec 11 08:04:36.272 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 08:04:36.272 INFO [stderr]   --> src/main.rs:18:21
Dec 11 08:04:36.272 INFO [stderr]    |
Dec 11 08:04:36.272 INFO [stderr] 18 |                     stream.write(buffer.as_bytes());
Dec 11 08:04:36.272 INFO [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 08:04:36.272 INFO [stderr]    |
Dec 11 08:04:36.272 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 11 08:04:36.272 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 08:04:36.272 INFO [stderr] 
Dec 11 08:04:36.352 INFO [stderr] warning: unused variable: `buffer`
Dec 11 08:04:36.352 INFO [stderr]   --> src/main.rs:12:13
Dec 11 08:04:36.352 INFO [stderr]    |
Dec 11 08:04:36.352 INFO [stderr] 12 |     let mut buffer = String::new();
Dec 11 08:04:36.352 INFO [stderr]    |             ^^^^^^ help: consider using `_buffer` instead
Dec 11 08:04:36.352 INFO [stderr]    |
Dec 11 08:04:36.352 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 08:04:36.352 INFO [stderr] 
Dec 11 08:04:36.360 INFO [stderr] warning: variable does not need to be mutable
Dec 11 08:04:36.360 INFO [stderr]   --> src/main.rs:12:9
Dec 11 08:04:36.360 INFO [stderr]    |
Dec 11 08:04:36.360 INFO [stderr] 12 |     let mut buffer = String::new();
Dec 11 08:04:36.360 INFO [stderr]    |         ----^^^^^^
Dec 11 08:04:36.360 INFO [stderr]    |         |
Dec 11 08:04:36.360 INFO [stderr]    |         help: remove this `mut`
Dec 11 08:04:36.360 INFO [stderr]    |
Dec 11 08:04:36.360 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 11 08:04:36.360 INFO [stderr] 
Dec 11 08:04:36.384 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 08:04:36.384 INFO [stderr]   --> src/main.rs:18:21
Dec 11 08:04:36.384 INFO [stderr]    |
Dec 11 08:04:36.384 INFO [stderr] 18 |                     stream.write(buffer.as_bytes());
Dec 11 08:04:36.384 INFO [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 08:04:36.384 INFO [stderr]    |
Dec 11 08:04:36.384 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 11 08:04:36.384 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 08:04:36.384 INFO [stderr] 
Dec 11 08:04:36.407 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.51s
Dec 11 08:04:36.416 INFO [stderr] su: No module specific data is present
Dec 11 08:04:37.252 INFO running `"docker" "inspect" "d15f3cdfa0f15232ce5d8eadd7a3277453c628da710997464cdd96cd71557f47"`
Dec 11 08:04:37.554 INFO running `"docker" "rm" "-f" "d15f3cdfa0f15232ce5d8eadd7a3277453c628da710997464cdd96cd71557f47"`
Dec 11 08:04:37.872 INFO [stdout] d15f3cdfa0f15232ce5d8eadd7a3277453c628da710997464cdd96cd71557f47