Nov 28 07:00:39.762 INFO checking daogangtang/learn-tokio against try#db42d4dad33013eba11ef37342ad9f614e5652b8 for pr-56074
Nov 28 07:00:39.762 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-7/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56074/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/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 +db42d4dad33013eba11ef37342ad9f614e5652b8-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"`
Nov 28 07:00:40.194 INFO [stdout] a0795f63ab2e7756fe86c73553fa1d52eb0203d3d3fc66f055285aa7e0657c33
Nov 28 07:00:40.197 INFO running `"docker" "start" "-a" "a0795f63ab2e7756fe86c73553fa1d52eb0203d3d3fc66f055285aa7e0657c33"`
Nov 28 07:00:42.022 INFO [stderr] usermod: no changes
Nov 28 07:00:42.278 INFO [stderr]     Checking learn-tokio0 v0.1.0 (/source)
Nov 28 07:00:53.945 INFO [stderr] warning: unused import: `tokio::io`
Nov 28 07:00:53.946 INFO [stderr]  --> src/tcp_server.rs:5:5
Nov 28 07:00:53.946 INFO [stderr]   |
Nov 28 07:00:53.947 INFO [stderr] 5 | use tokio::io;
Nov 28 07:00:53.947 INFO [stderr]   |     ^^^^^^^^^
Nov 28 07:00:53.948 INFO [stderr]   |
Nov 28 07:00:53.948 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Nov 28 07:00:53.949 INFO [stderr] 
Nov 28 07:00:54.464 INFO [stderr] warning: unused import: `tokio::io`
Nov 28 07:00:54.465 INFO [stderr]  --> src/tcp_server.rs:5:5
Nov 28 07:00:54.465 INFO [stderr]   |
Nov 28 07:00:54.466 INFO [stderr] 5 | use tokio::io;
Nov 28 07:00:54.467 INFO [stderr]   |     ^^^^^^^^^
Nov 28 07:00:54.469 INFO [stderr] warning: unused import: `tokio::prelude`
Nov 28 07:00:54.470 INFO [stderr]  --> src/tcp_server.rs:7:5
Nov 28 07:00:54.470 INFO [stderr]   |
Nov 28 07:00:54.470 INFO [stderr] 7 | use tokio::prelude::*;
Nov 28 07:00:54.470 INFO [stderr]   |     ^^^^^^^^^^^^^^
Nov 28 07:00:54.471 INFO [stderr] 
Nov 28 07:00:54.473 INFO [stderr] warning: unused variable: `e`
Nov 28 07:00:54.473 INFO [stderr]   --> src/tcp_server.rs:37:31
Nov 28 07:00:54.473 INFO [stderr]    |
Nov 28 07:00:54.488 INFO [stderr] 37 |                     .map_err(|e| std::io::Error::new(std::io::ErrorKind::Other, "oh no!"))
Nov 28 07:00:54.488 INFO [stderr]    |                               ^ help: consider using `_e` instead
Nov 28 07:00:54.488 INFO [stderr]   |
Nov 28 07:00:54.488 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Nov 28 07:00:54.488 INFO [stderr] 
Nov 28 07:00:54.489 INFO [stderr]    |
Nov 28 07:00:54.489 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 28 07:00:54.489 INFO [stderr] 
Nov 28 07:00:54.736 INFO [stderr] warning: unused variable: `e`
Nov 28 07:00:54.737 INFO [stderr]   --> src/tcp_server3.rs:29:31
Nov 28 07:00:54.738 INFO [stderr]    |
Nov 28 07:00:54.739 INFO [stderr] 29 |                     .map_err(|e| std::io::Error::new(std::io::ErrorKind::Other, "oh no!"))
Nov 28 07:00:54.739 INFO [stderr]    |                               ^ help: consider using `_e` instead
Nov 28 07:00:54.744 INFO [stderr]    |
Nov 28 07:00:54.745 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 28 07:00:54.745 INFO [stderr] 
Nov 28 07:00:55.003 INFO [stderr] warning: unused import: `tokio::prelude`
Nov 28 07:00:55.003 INFO [stderr]  --> src/tcp_server.rs:7:5
Nov 28 07:00:55.003 INFO [stderr]   |
Nov 28 07:00:55.003 INFO [stderr] 7 | use tokio::prelude::*;
Nov 28 07:00:55.003 INFO [stderr]   |     ^^^^^^^^^^^^^^
Nov 28 07:00:55.013 INFO [stderr] 
Nov 28 07:00:55.015 INFO [stderr] warning: unused variable: `e`
Nov 28 07:00:55.015 INFO [stderr]   --> src/tcp_server.rs:37:31
Nov 28 07:00:55.015 INFO [stderr]    |
Nov 28 07:00:55.015 INFO [stderr] 37 |                     .map_err(|e| std::io::Error::new(std::io::ErrorKind::Other, "oh no!"))
Nov 28 07:00:55.015 INFO [stderr]    |                               ^ help: consider using `_e` instead
Nov 28 07:00:55.040 INFO [stderr]    |
Nov 28 07:00:55.040 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 28 07:00:55.040 INFO [stderr] 
Nov 28 07:00:57.210 INFO [stderr] warning: unused import: `futures::try_ready`
Nov 28 07:00:57.211 INFO [stderr]  --> src/concurrent_send_recv2.rs:7:5
Nov 28 07:00:57.211 INFO [stderr]   |
Nov 28 07:00:57.211 INFO [stderr] 7 | use futures::try_ready;
Nov 28 07:00:57.212 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^
Nov 28 07:00:57.212 INFO [stderr]   |
Nov 28 07:00:57.212 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Nov 28 07:00:57.212 INFO [stderr] 
Nov 28 07:01:04.328 INFO [stderr] warning: unused import: `futures::try_ready`
Nov 28 07:01:04.329 INFO [stderr]  --> src/concurrent_send_recv2.rs:7:5
Nov 28 07:01:04.330 INFO [stderr]   |
Nov 28 07:01:04.330 INFO [stderr] 7 | use futures::try_ready;
Nov 28 07:01:04.331 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^
Nov 28 07:01:04.344 INFO [stderr]   |
Nov 28 07:01:04.345 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Nov 28 07:01:04.346 INFO [stderr] 
Nov 28 07:01:07.748 INFO [stderr] warning: unused import: `futures::try_ready`
Nov 28 07:01:07.749 INFO [stderr]  --> src/concurrent_send_recv.rs:7:5
Nov 28 07:01:07.750 INFO [stderr]   |
Nov 28 07:01:07.750 INFO [stderr] 7 | use futures::try_ready;
Nov 28 07:01:07.751 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^
Nov 28 07:01:07.761 INFO [stderr]   |
Nov 28 07:01:07.761 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Nov 28 07:01:07.761 INFO [stderr] 
Nov 28 07:01:18.480 INFO [stderr] warning: unused variable: `e`
Nov 28 07:01:18.482 INFO [stderr]   --> src/tcp_server3.rs:29:31
Nov 28 07:01:18.482 INFO [stderr]    |
Nov 28 07:01:18.483 INFO [stderr] 29 |                     .map_err(|e| std::io::Error::new(std::io::ErrorKind::Other, "oh no!"))
Nov 28 07:01:18.484 INFO [stderr]    |                               ^ help: consider using `_e` instead
Nov 28 07:01:18.484 INFO [stderr]    |
Nov 28 07:01:18.485 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 28 07:01:18.486 INFO [stderr] 
Nov 28 07:01:20.292 INFO [stderr] warning: unused import: `futures::try_ready`
Nov 28 07:01:20.292 INFO [stderr]  --> src/concurrent_send_recv.rs:7:5
Nov 28 07:01:20.292 INFO [stderr]   |
Nov 28 07:01:20.292 INFO [stderr] 7 | use futures::try_ready;
Nov 28 07:01:20.292 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^
Nov 28 07:01:20.292 INFO [stderr]   |
Nov 28 07:01:20.292 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Nov 28 07:01:20.292 INFO [stderr] 
Nov 28 07:01:20.572 INFO [stderr] warning: unused variable: `stdout`
Nov 28 07:01:20.572 INFO [stderr]   --> src/tcp_client.rs:12:13
Nov 28 07:01:20.573 INFO [stderr]    |
Nov 28 07:01:20.573 INFO [stderr] 12 |     let mut stdout = io::stdout();
Nov 28 07:01:20.573 INFO [stderr]    |             ^^^^^^ help: consider using `_stdout` instead
Nov 28 07:01:20.573 INFO [stderr]    |
Nov 28 07:01:20.573 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 28 07:01:20.573 INFO [stderr] 
Nov 28 07:01:20.722 INFO [stderr] warning: variable does not need to be mutable
Nov 28 07:01:20.723 INFO [stderr]   --> src/tcp_client.rs:12:9
Nov 28 07:01:20.723 INFO [stderr]    |
Nov 28 07:01:20.724 INFO [stderr] 12 |     let mut stdout = io::stdout();
Nov 28 07:01:20.724 INFO [stderr]    |         ----^^^^^^
Nov 28 07:01:20.725 INFO [stderr]    |         |
Nov 28 07:01:20.726 INFO [stderr]    |         help: remove this `mut`
Nov 28 07:01:20.726 INFO [stderr]    |
Nov 28 07:01:20.727 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 28 07:01:20.727 INFO [stderr] 
Nov 28 07:01:21.075 INFO [stderr] warning: unused variable: `stdout`
Nov 28 07:01:21.075 INFO [stderr]   --> src/tcp_client.rs:12:13
Nov 28 07:01:21.075 INFO [stderr]    |
Nov 28 07:01:21.075 INFO [stderr] 12 |     let mut stdout = io::stdout();
Nov 28 07:01:21.075 INFO [stderr]    |             ^^^^^^ help: consider using `_stdout` instead
Nov 28 07:01:21.075 INFO [stderr]    |
Nov 28 07:01:21.075 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 28 07:01:21.075 INFO [stderr] 
Nov 28 07:01:21.142 INFO [stderr] warning: variable does not need to be mutable
Nov 28 07:01:21.142 INFO [stderr]   --> src/tcp_client.rs:12:9
Nov 28 07:01:21.142 INFO [stderr]    |
Nov 28 07:01:21.142 INFO [stderr] 12 |     let mut stdout = io::stdout();
Nov 28 07:01:21.142 INFO [stderr]    |         ----^^^^^^
Nov 28 07:01:21.144 INFO [stderr]    |         |
Nov 28 07:01:21.144 INFO [stderr]    |         help: remove this `mut`
Nov 28 07:01:21.144 INFO [stderr]    |
Nov 28 07:01:21.144 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 28 07:01:21.144 INFO [stderr] 
Nov 28 07:01:21.589 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 39.51s
Nov 28 07:01:21.598 INFO [stderr] su: No module specific data is present
Nov 28 07:01:22.238 INFO running `"docker" "inspect" "a0795f63ab2e7756fe86c73553fa1d52eb0203d3d3fc66f055285aa7e0657c33"`
Nov 28 07:01:22.546 INFO running `"docker" "rm" "-f" "a0795f63ab2e7756fe86c73553fa1d52eb0203d3d3fc66f055285aa7e0657c33"`
Nov 28 07:01:22.788 INFO [stdout] a0795f63ab2e7756fe86c73553fa1d52eb0203d3d3fc66f055285aa7e0657c33