Dec 11 18:13:26.045 INFO checking futurepaul/hello_server_learning against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 18:13:26.045 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-2/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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 18:13:26.551 INFO [stdout] 9aa43ba4f3b0a3459b6ce1a6d469706cbf1b1b98e1b0a93f4cf0b562bd11bca7
Dec 11 18:13:26.554 INFO running `"docker" "start" "-a" "9aa43ba4f3b0a3459b6ce1a6d469706cbf1b1b98e1b0a93f4cf0b562bd11bca7"`
Dec 11 18:13:27.831 INFO [stderr] usermod: no changes
Dec 11 18:13:27.940 INFO [stderr]     Checking hello v0.1.0 (/source)
Dec 11 18:13:28.792 INFO [stderr] warning: unused imports: `Error`, `Fail`
Dec 11 18:13:28.792 INFO [stderr]  --> src/lib.rs:7:15
Dec 11 18:13:28.792 INFO [stderr]   |
Dec 11 18:13:28.792 INFO [stderr] 7 | use failure::{Error, Fail};
Dec 11 18:13:28.792 INFO [stderr]   |               ^^^^^  ^^^^
Dec 11 18:13:28.792 INFO [stderr]   |
Dec 11 18:13:28.792 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 18:13:28.792 INFO [stderr] 
Dec 11 18:13:28.899 INFO [stderr] warning: field is never used: `workers`
Dec 11 18:13:28.899 INFO [stderr]   --> src/lib.rs:10:3
Dec 11 18:13:28.899 INFO [stderr]    |
Dec 11 18:13:28.899 INFO [stderr] 10 |   workers: Vec<Worker>,
Dec 11 18:13:28.899 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^
Dec 11 18:13:28.899 INFO [stderr]    |
Dec 11 18:13:28.899 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 18:13:28.899 INFO [stderr] 
Dec 11 18:13:28.899 INFO [stderr] warning: field is never used: `id`
Dec 11 18:13:28.899 INFO [stderr]   --> src/lib.rs:59:3
Dec 11 18:13:28.899 INFO [stderr]    |
Dec 11 18:13:28.899 INFO [stderr] 59 |   id: usize,
Dec 11 18:13:28.899 INFO [stderr]    |   ^^^^^^^^^
Dec 11 18:13:28.899 INFO [stderr] 
Dec 11 18:13:28.899 INFO [stderr] warning: field is never used: `thread`
Dec 11 18:13:28.899 INFO [stderr]   --> src/lib.rs:60:3
Dec 11 18:13:28.899 INFO [stderr]    |
Dec 11 18:13:28.899 INFO [stderr] 60 |   thread: thread::JoinHandle<()>,
Dec 11 18:13:28.899 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 18:13:28.899 INFO [stderr] 
Dec 11 18:13:29.176 INFO [stderr] warning: unused imports: `Error`, `Fail`
Dec 11 18:13:29.177 INFO [stderr]  --> src/lib.rs:7:15
Dec 11 18:13:29.177 INFO [stderr]   |
Dec 11 18:13:29.177 INFO [stderr] 7 | use failure::{Error, Fail};
Dec 11 18:13:29.177 INFO [stderr]   |               ^^^^^  ^^^^
Dec 11 18:13:29.177 INFO [stderr]   |
Dec 11 18:13:29.178 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 18:13:29.178 INFO [stderr] 
Dec 11 18:13:29.320 INFO [stderr] warning: field is never used: `workers`
Dec 11 18:13:29.320 INFO [stderr]   --> src/lib.rs:10:3
Dec 11 18:13:29.320 INFO [stderr]    |
Dec 11 18:13:29.320 INFO [stderr] 10 |   workers: Vec<Worker>,
Dec 11 18:13:29.320 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^
Dec 11 18:13:29.320 INFO [stderr]    |
Dec 11 18:13:29.320 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 18:13:29.321 INFO [stderr] 
Dec 11 18:13:29.321 INFO [stderr] warning: field is never used: `id`
Dec 11 18:13:29.321 INFO [stderr]   --> src/lib.rs:59:3
Dec 11 18:13:29.321 INFO [stderr]    |
Dec 11 18:13:29.321 INFO [stderr] 59 |   id: usize,
Dec 11 18:13:29.321 INFO [stderr]    |   ^^^^^^^^^
Dec 11 18:13:29.321 INFO [stderr] 
Dec 11 18:13:29.321 INFO [stderr] warning: field is never used: `thread`
Dec 11 18:13:29.321 INFO [stderr]   --> src/lib.rs:60:3
Dec 11 18:13:29.321 INFO [stderr]    |
Dec 11 18:13:29.321 INFO [stderr] 60 |   thread: thread::JoinHandle<()>,
Dec 11 18:13:29.321 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 18:13:29.321 INFO [stderr] 
Dec 11 18:13:29.852 INFO [stderr] warning: unused `#[macro_use]` import
Dec 11 18:13:29.852 INFO [stderr]  --> src/main.rs:1:1
Dec 11 18:13:29.852 INFO [stderr]   |
Dec 11 18:13:29.852 INFO [stderr] 1 | #[macro_use]
Dec 11 18:13:29.852 INFO [stderr]   | ^^^^^^^^^^^^
Dec 11 18:13:29.852 INFO [stderr]   |
Dec 11 18:13:29.852 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 18:13:29.852 INFO [stderr] 
Dec 11 18:13:29.956 INFO [stderr] warning: unused variable: `how_much_we_read`
Dec 11 18:13:29.956 INFO [stderr]   --> src/main.rs:28:7
Dec 11 18:13:29.956 INFO [stderr]    |
Dec 11 18:13:29.956 INFO [stderr] 28 |   let how_much_we_read = stream.read(&mut buffer).unwrap();
Dec 11 18:13:29.956 INFO [stderr]    |       ^^^^^^^^^^^^^^^^ help: consider using `_how_much_we_read` instead
Dec 11 18:13:29.956 INFO [stderr]    |
Dec 11 18:13:29.956 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 18:13:29.956 INFO [stderr] 
Dec 11 18:13:29.956 INFO [stderr] warning: unused variable: `how_much_written`
Dec 11 18:13:29.956 INFO [stderr]   --> src/main.rs:59:7
Dec 11 18:13:29.956 INFO [stderr]    |
Dec 11 18:13:29.956 INFO [stderr] 59 |   let how_much_written = stream.write(response.as_slice()).unwrap();
Dec 11 18:13:29.956 INFO [stderr]    |       ^^^^^^^^^^^^^^^^ help: consider using `_how_much_written` instead
Dec 11 18:13:29.956 INFO [stderr] 
Dec 11 18:13:29.989 INFO [stderr] warning: unused `#[macro_use]` import
Dec 11 18:13:29.989 INFO [stderr]  --> src/main.rs:1:1
Dec 11 18:13:29.989 INFO [stderr]   |
Dec 11 18:13:29.989 INFO [stderr] 1 | #[macro_use]
Dec 11 18:13:29.989 INFO [stderr]   | ^^^^^^^^^^^^
Dec 11 18:13:29.989 INFO [stderr]   |
Dec 11 18:13:29.989 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 18:13:29.989 INFO [stderr] 
Dec 11 18:13:30.040 INFO [stderr] warning: unused variable: `how_much_we_read`
Dec 11 18:13:30.040 INFO [stderr]   --> src/main.rs:28:7
Dec 11 18:13:30.040 INFO [stderr]    |
Dec 11 18:13:30.040 INFO [stderr] 28 |   let how_much_we_read = stream.read(&mut buffer).unwrap();
Dec 11 18:13:30.040 INFO [stderr]    |       ^^^^^^^^^^^^^^^^ help: consider using `_how_much_we_read` instead
Dec 11 18:13:30.040 INFO [stderr]    |
Dec 11 18:13:30.040 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 18:13:30.040 INFO [stderr] 
Dec 11 18:13:30.040 INFO [stderr] warning: unused variable: `how_much_written`
Dec 11 18:13:30.040 INFO [stderr]   --> src/main.rs:59:7
Dec 11 18:13:30.040 INFO [stderr]    |
Dec 11 18:13:30.040 INFO [stderr] 59 |   let how_much_written = stream.write(response.as_slice()).unwrap();
Dec 11 18:13:30.040 INFO [stderr]    |       ^^^^^^^^^^^^^^^^ help: consider using `_how_much_written` instead
Dec 11 18:13:30.040 INFO [stderr] 
Dec 11 18:13:30.076 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.20s
Dec 11 18:13:30.076 INFO [stderr] su: No module specific data is present
Dec 11 18:13:30.840 INFO running `"docker" "inspect" "9aa43ba4f3b0a3459b6ce1a6d469706cbf1b1b98e1b0a93f4cf0b562bd11bca7"`
Dec 11 18:13:31.033 INFO running `"docker" "rm" "-f" "9aa43ba4f3b0a3459b6ce1a6d469706cbf1b1b98e1b0a93f4cf0b562bd11bca7"`
Dec 11 18:13:31.163 INFO [stdout] 9aa43ba4f3b0a3459b6ce1a6d469706cbf1b1b98e1b0a93f4cf0b562bd11bca7