Dec 11 18:13:25.649 INFO checking futurepaul/hello_server_learning against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 11 18:13:25.649 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-7/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/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 18:13:25.980 INFO [stdout] 176817cfb678d6a0d87d5cc92e2338357b64e7523c1a07c36168a570dafdbbcf
Dec 11 18:13:25.985 INFO running `"docker" "start" "-a" "176817cfb678d6a0d87d5cc92e2338357b64e7523c1a07c36168a570dafdbbcf"`
Dec 11 18:13:27.276 INFO [stderr] usermod: no changes
Dec 11 18:13:27.436 INFO [stderr]     Checking hello v0.1.0 (/source)
Dec 11 18:13:28.615 INFO [stderr] warning: unused imports: `Error`, `Fail`
Dec 11 18:13:28.615 INFO [stderr]  --> src/lib.rs:7:15
Dec 11 18:13:28.615 INFO [stderr]   |
Dec 11 18:13:28.615 INFO [stderr] 7 | use failure::{Error, Fail};
Dec 11 18:13:28.615 INFO [stderr]   |               ^^^^^  ^^^^
Dec 11 18:13:28.615 INFO [stderr]   |
Dec 11 18:13:28.615 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 18:13:28.615 INFO [stderr] 
Dec 11 18:13:28.728 INFO [stderr] warning: field is never used: `workers`
Dec 11 18:13:28.728 INFO [stderr]   --> src/lib.rs:10:3
Dec 11 18:13:28.728 INFO [stderr]    |
Dec 11 18:13:28.728 INFO [stderr] 10 |   workers: Vec<Worker>,
Dec 11 18:13:28.728 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^
Dec 11 18:13:28.732 INFO [stderr]    |
Dec 11 18:13:28.732 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 18:13:28.732 INFO [stderr] 
Dec 11 18:13:28.732 INFO [stderr] warning: field is never used: `id`
Dec 11 18:13:28.732 INFO [stderr]   --> src/lib.rs:59:3
Dec 11 18:13:28.732 INFO [stderr]    |
Dec 11 18:13:28.732 INFO [stderr] 59 |   id: usize,
Dec 11 18:13:28.732 INFO [stderr]    |   ^^^^^^^^^
Dec 11 18:13:28.732 INFO [stderr] 
Dec 11 18:13:28.732 INFO [stderr] warning: field is never used: `thread`
Dec 11 18:13:28.732 INFO [stderr]   --> src/lib.rs:60:3
Dec 11 18:13:28.732 INFO [stderr]    |
Dec 11 18:13:28.732 INFO [stderr] 60 |   thread: thread::JoinHandle<()>,
Dec 11 18:13:28.732 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 18:13:28.732 INFO [stderr] 
Dec 11 18:13:28.756 INFO [stderr] warning: unused imports: `Error`, `Fail`
Dec 11 18:13:28.756 INFO [stderr]  --> src/lib.rs:7:15
Dec 11 18:13:28.756 INFO [stderr]   |
Dec 11 18:13:28.756 INFO [stderr] 7 | use failure::{Error, Fail};
Dec 11 18:13:28.756 INFO [stderr]   |               ^^^^^  ^^^^
Dec 11 18:13:28.756 INFO [stderr]   |
Dec 11 18:13:28.756 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 18:13:28.756 INFO [stderr] 
Dec 11 18:13:28.933 INFO [stderr] warning: field is never used: `workers`
Dec 11 18:13:28.933 INFO [stderr]   --> src/lib.rs:10:3
Dec 11 18:13:28.933 INFO [stderr]    |
Dec 11 18:13:28.933 INFO [stderr] 10 |   workers: Vec<Worker>,
Dec 11 18:13:28.933 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^
Dec 11 18:13:28.952 INFO [stderr]    |
Dec 11 18:13:28.952 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 18:13:28.952 INFO [stderr] 
Dec 11 18:13:28.952 INFO [stderr] warning: field is never used: `id`
Dec 11 18:13:28.952 INFO [stderr]   --> src/lib.rs:59:3
Dec 11 18:13:28.952 INFO [stderr]    |
Dec 11 18:13:28.952 INFO [stderr] 59 |   id: usize,
Dec 11 18:13:28.952 INFO [stderr]    |   ^^^^^^^^^
Dec 11 18:13:28.952 INFO [stderr] 
Dec 11 18:13:28.952 INFO [stderr] warning: field is never used: `thread`
Dec 11 18:13:28.952 INFO [stderr]   --> src/lib.rs:60:3
Dec 11 18:13:28.952 INFO [stderr]    |
Dec 11 18:13:28.952 INFO [stderr] 60 |   thread: thread::JoinHandle<()>,
Dec 11 18:13:28.952 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 18:13:28.952 INFO [stderr] 
Dec 11 18:13:29.800 INFO [stderr] warning: unused `#[macro_use]` import
Dec 11 18:13:29.800 INFO [stderr]  --> src/main.rs:1:1
Dec 11 18:13:29.800 INFO [stderr]   |
Dec 11 18:13:29.800 INFO [stderr] 1 | #[macro_use]
Dec 11 18:13:29.800 INFO [stderr]   | ^^^^^^^^^^^^
Dec 11 18:13:29.800 INFO [stderr]   |
Dec 11 18:13:29.800 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 18:13:29.800 INFO [stderr] 
Dec 11 18:13:29.832 INFO [stderr] warning: unused `#[macro_use]` import
Dec 11 18:13:29.832 INFO [stderr]  --> src/main.rs:1:1
Dec 11 18:13:29.832 INFO [stderr]   |
Dec 11 18:13:29.832 INFO [stderr] 1 | #[macro_use]
Dec 11 18:13:29.832 INFO [stderr]   | ^^^^^^^^^^^^
Dec 11 18:13:29.832 INFO [stderr]   |
Dec 11 18:13:29.832 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 18:13:29.832 INFO [stderr] 
Dec 11 18:13:29.864 INFO [stderr] warning: unused variable: `how_much_we_read`
Dec 11 18:13:29.864 INFO [stderr]   --> src/main.rs:28:7
Dec 11 18:13:29.864 INFO [stderr]    |
Dec 11 18:13:29.864 INFO [stderr] 28 |   let how_much_we_read = stream.read(&mut buffer).unwrap();
Dec 11 18:13:29.864 INFO [stderr]    |       ^^^^^^^^^^^^^^^^ help: consider using `_how_much_we_read` instead
Dec 11 18:13:29.864 INFO [stderr]    |
Dec 11 18:13:29.864 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 18:13:29.864 INFO [stderr] 
Dec 11 18:13:29.864 INFO [stderr] warning: unused variable: `how_much_written`
Dec 11 18:13:29.864 INFO [stderr]   --> src/main.rs:59:7
Dec 11 18:13:29.864 INFO [stderr]    |
Dec 11 18:13:29.864 INFO [stderr] 59 |   let how_much_written = stream.write(response.as_slice()).unwrap();
Dec 11 18:13:29.864 INFO [stderr]    |       ^^^^^^^^^^^^^^^^ help: consider using `_how_much_written` instead
Dec 11 18:13:29.864 INFO [stderr] 
Dec 11 18:13:29.908 INFO [stderr] warning: unused variable: `how_much_we_read`
Dec 11 18:13:29.908 INFO [stderr]   --> src/main.rs:28:7
Dec 11 18:13:29.908 INFO [stderr]    |
Dec 11 18:13:29.908 INFO [stderr] 28 |   let how_much_we_read = stream.read(&mut buffer).unwrap();
Dec 11 18:13:29.908 INFO [stderr]    |       ^^^^^^^^^^^^^^^^ help: consider using `_how_much_we_read` instead
Dec 11 18:13:29.908 INFO [stderr]    |
Dec 11 18:13:29.908 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 18:13:29.908 INFO [stderr] 
Dec 11 18:13:29.908 INFO [stderr] warning: unused variable: `how_much_written`
Dec 11 18:13:29.908 INFO [stderr]   --> src/main.rs:59:7
Dec 11 18:13:29.908 INFO [stderr]    |
Dec 11 18:13:29.908 INFO [stderr] 59 |   let how_much_written = stream.write(response.as_slice()).unwrap();
Dec 11 18:13:29.908 INFO [stderr]    |       ^^^^^^^^^^^^^^^^ help: consider using `_how_much_written` instead
Dec 11 18:13:29.908 INFO [stderr] 
Dec 11 18:13:29.950 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.64s
Dec 11 18:13:29.955 INFO [stderr] su: No module specific data is present
Dec 11 18:13:30.660 INFO running `"docker" "inspect" "176817cfb678d6a0d87d5cc92e2338357b64e7523c1a07c36168a570dafdbbcf"`
Dec 11 18:13:30.926 INFO running `"docker" "rm" "-f" "176817cfb678d6a0d87d5cc92e2338357b64e7523c1a07c36168a570dafdbbcf"`
Dec 11 18:13:31.040 INFO [stdout] 176817cfb678d6a0d87d5cc92e2338357b64e7523c1a07c36168a570dafdbbcf