Dec 19 16:44:13.031 INFO checking futurepaul/hello_server_learning against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 16:44:13.032 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-3/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/futurepaul/hello_server_learning:/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 16:44:13.436 INFO [stdout] 2f9f70b6ab3089c90d7533952aa94b7b46fbd41153f354888cf56fcb8498352c
Dec 19 16:44:13.443 INFO running `"docker" "start" "-a" "2f9f70b6ab3089c90d7533952aa94b7b46fbd41153f354888cf56fcb8498352c"`
Dec 19 16:44:14.204 INFO [stderr]     Checking hello v0.1.0 (/opt/crater/workdir)
Dec 19 16:44:14.516 INFO [stderr] warning: unused imports: `Error`, `Fail`
Dec 19 16:44:14.516 INFO [stderr]  --> src/lib.rs:7:15
Dec 19 16:44:14.516 INFO [stderr]   |
Dec 19 16:44:14.516 INFO [stderr] 7 | use failure::{Error, Fail};
Dec 19 16:44:14.516 INFO [stderr]   |               ^^^^^  ^^^^
Dec 19 16:44:14.516 INFO [stderr]   |
Dec 19 16:44:14.516 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 16:44:14.516 INFO [stderr] 
Dec 19 16:44:14.540 INFO [stderr] warning: unused imports: `Error`, `Fail`
Dec 19 16:44:14.540 INFO [stderr]  --> src/lib.rs:7:15
Dec 19 16:44:14.540 INFO [stderr]   |
Dec 19 16:44:14.540 INFO [stderr] 7 | use failure::{Error, Fail};
Dec 19 16:44:14.540 INFO [stderr]   |               ^^^^^  ^^^^
Dec 19 16:44:14.540 INFO [stderr]   |
Dec 19 16:44:14.540 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 16:44:14.540 INFO [stderr] 
Dec 19 16:44:14.570 INFO [stderr] warning: field is never used: `workers`
Dec 19 16:44:14.570 INFO [stderr]   --> src/lib.rs:10:3
Dec 19 16:44:14.570 INFO [stderr]    |
Dec 19 16:44:14.570 INFO [stderr] 10 |   workers: Vec<Worker>,
Dec 19 16:44:14.570 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^
Dec 19 16:44:14.570 INFO [stderr]    |
Dec 19 16:44:14.570 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 16:44:14.570 INFO [stderr] 
Dec 19 16:44:14.570 INFO [stderr] warning: field is never used: `id`
Dec 19 16:44:14.570 INFO [stderr]   --> src/lib.rs:59:3
Dec 19 16:44:14.570 INFO [stderr]    |
Dec 19 16:44:14.570 INFO [stderr] 59 |   id: usize,
Dec 19 16:44:14.570 INFO [stderr]    |   ^^^^^^^^^
Dec 19 16:44:14.570 INFO [stderr] 
Dec 19 16:44:14.570 INFO [stderr] warning: field is never used: `thread`
Dec 19 16:44:14.570 INFO [stderr]   --> src/lib.rs:60:3
Dec 19 16:44:14.571 INFO [stderr]    |
Dec 19 16:44:14.571 INFO [stderr] 60 |   thread: thread::JoinHandle<()>,
Dec 19 16:44:14.571 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 16:44:14.571 INFO [stderr] 
Dec 19 16:44:14.594 INFO [stderr] warning: field is never used: `workers`
Dec 19 16:44:14.594 INFO [stderr]   --> src/lib.rs:10:3
Dec 19 16:44:14.594 INFO [stderr]    |
Dec 19 16:44:14.594 INFO [stderr] 10 |   workers: Vec<Worker>,
Dec 19 16:44:14.594 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^
Dec 19 16:44:14.594 INFO [stderr]    |
Dec 19 16:44:14.594 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 16:44:14.594 INFO [stderr] 
Dec 19 16:44:14.594 INFO [stderr] warning: field is never used: `id`
Dec 19 16:44:14.594 INFO [stderr]   --> src/lib.rs:59:3
Dec 19 16:44:14.594 INFO [stderr]    |
Dec 19 16:44:14.594 INFO [stderr] 59 |   id: usize,
Dec 19 16:44:14.594 INFO [stderr]    |   ^^^^^^^^^
Dec 19 16:44:14.594 INFO [stderr] 
Dec 19 16:44:14.594 INFO [stderr] warning: field is never used: `thread`
Dec 19 16:44:14.594 INFO [stderr]   --> src/lib.rs:60:3
Dec 19 16:44:14.594 INFO [stderr]    |
Dec 19 16:44:14.594 INFO [stderr] 60 |   thread: thread::JoinHandle<()>,
Dec 19 16:44:14.594 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 16:44:14.594 INFO [stderr] 
Dec 19 16:44:14.828 INFO [stderr] warning: unused `#[macro_use]` import
Dec 19 16:44:14.828 INFO [stderr]  --> src/main.rs:1:1
Dec 19 16:44:14.828 INFO [stderr]   |
Dec 19 16:44:14.828 INFO [stderr] 1 | #[macro_use]
Dec 19 16:44:14.828 INFO [stderr]   | ^^^^^^^^^^^^
Dec 19 16:44:14.828 INFO [stderr]   |
Dec 19 16:44:14.828 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 16:44:14.828 INFO [stderr] 
Dec 19 16:44:14.850 INFO [stderr] warning: unused `#[macro_use]` import
Dec 19 16:44:14.850 INFO [stderr]  --> src/main.rs:1:1
Dec 19 16:44:14.850 INFO [stderr]   |
Dec 19 16:44:14.850 INFO [stderr] 1 | #[macro_use]
Dec 19 16:44:14.850 INFO [stderr]   | ^^^^^^^^^^^^
Dec 19 16:44:14.850 INFO [stderr]   |
Dec 19 16:44:14.850 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 16:44:14.850 INFO [stderr] 
Dec 19 16:44:14.875 INFO [stderr] warning: unused variable: `how_much_we_read`
Dec 19 16:44:14.875 INFO [stderr]   --> src/main.rs:28:7
Dec 19 16:44:14.875 INFO [stderr]    |
Dec 19 16:44:14.875 INFO [stderr] 28 |   let how_much_we_read = stream.read(&mut buffer).unwrap();
Dec 19 16:44:14.875 INFO [stderr]    |       ^^^^^^^^^^^^^^^^ help: consider using `_how_much_we_read` instead
Dec 19 16:44:14.876 INFO [stderr]    |
Dec 19 16:44:14.876 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 16:44:14.876 INFO [stderr] 
Dec 19 16:44:14.876 INFO [stderr] warning: unused variable: `how_much_written`
Dec 19 16:44:14.876 INFO [stderr]   --> src/main.rs:59:7
Dec 19 16:44:14.876 INFO [stderr]    |
Dec 19 16:44:14.876 INFO [stderr] 59 |   let how_much_written = stream.write(response.as_slice()).unwrap();
Dec 19 16:44:14.876 INFO [stderr]    |       ^^^^^^^^^^^^^^^^ help: consider using `_how_much_written` instead
Dec 19 16:44:14.880 INFO [stderr] 
Dec 19 16:44:14.892 INFO [stderr] warning: unused variable: `how_much_we_read`
Dec 19 16:44:14.892 INFO [stderr]   --> src/main.rs:28:7
Dec 19 16:44:14.892 INFO [stderr]    |
Dec 19 16:44:14.892 INFO [stderr] 28 |   let how_much_we_read = stream.read(&mut buffer).unwrap();
Dec 19 16:44:14.892 INFO [stderr]    |       ^^^^^^^^^^^^^^^^ help: consider using `_how_much_we_read` instead
Dec 19 16:44:14.892 INFO [stderr]    |
Dec 19 16:44:14.892 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 16:44:14.892 INFO [stderr] 
Dec 19 16:44:14.892 INFO [stderr] warning: unused variable: `how_much_written`
Dec 19 16:44:14.892 INFO [stderr]   --> src/main.rs:59:7
Dec 19 16:44:14.892 INFO [stderr]    |
Dec 19 16:44:14.892 INFO [stderr] 59 |   let how_much_written = stream.write(response.as_slice()).unwrap();
Dec 19 16:44:14.892 INFO [stderr]    |       ^^^^^^^^^^^^^^^^ help: consider using `_how_much_written` instead
Dec 19 16:44:14.892 INFO [stderr] 
Dec 19 16:44:14.932 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.78s
Dec 19 16:44:15.234 INFO running `"docker" "inspect" "2f9f70b6ab3089c90d7533952aa94b7b46fbd41153f354888cf56fcb8498352c"`
Dec 19 16:44:15.330 INFO running `"docker" "rm" "-f" "2f9f70b6ab3089c90d7533952aa94b7b46fbd41153f354888cf56fcb8498352c"`
Dec 19 16:44:15.476 INFO [stdout] 2f9f70b6ab3089c90d7533952aa94b7b46fbd41153f354888cf56fcb8498352c