Dec 11 20:07:42.035 INFO checking daogangtang/learn-tokio against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 20:07:42.035 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-6/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/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 20:07:42.325 INFO [stdout] 417ad759fe433897a20ed81d1804f7b05618c740542106e99b9e838e514efb9b
Dec 11 20:07:42.326 INFO running `"docker" "start" "-a" "417ad759fe433897a20ed81d1804f7b05618c740542106e99b9e838e514efb9b"`
Dec 11 20:07:43.284 INFO [stderr] usermod: no changes
Dec 11 20:07:43.455 INFO [stderr]     Checking crossbeam-deque v0.6.1
Dec 11 20:07:43.472 INFO [stderr]     Checking tokio-reactor v0.1.6
Dec 11 20:07:44.922 INFO [stderr]     Checking tokio-threadpool v0.1.8
Dec 11 20:07:46.412 INFO [stderr]     Checking tokio-tcp v0.1.2
Dec 11 20:07:46.414 INFO [stderr]     Checking tokio-udp v0.1.2
Dec 11 20:07:46.425 INFO [stderr]     Checking tokio-uds v0.2.3
Dec 11 20:07:49.712 INFO [stderr]     Checking tokio-fs v0.1.4
Dec 11 20:07:52.129 INFO [stderr]     Checking tokio v0.1.11
Dec 11 20:07:54.115 INFO [stderr]     Checking learn-tokio0 v0.1.0 (/source)
Dec 11 20:08:06.323 INFO [stderr] warning: unused import: `tokio::io`
Dec 11 20:08:06.323 INFO [stderr]  --> src/tcp_server.rs:5:5
Dec 11 20:08:06.323 INFO [stderr]   |
Dec 11 20:08:06.324 INFO [stderr] 5 | use tokio::io;
Dec 11 20:08:06.324 INFO [stderr]   |     ^^^^^^^^^
Dec 11 20:08:06.324 INFO [stderr]   |
Dec 11 20:08:06.324 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 20:08:06.325 INFO [stderr] 
Dec 11 20:08:06.740 INFO [stderr] warning: unused import: `tokio::prelude`
Dec 11 20:08:06.741 INFO [stderr]  --> src/tcp_server.rs:7:5
Dec 11 20:08:06.741 INFO [stderr]   |
Dec 11 20:08:06.741 INFO [stderr] 7 | use tokio::prelude::*;
Dec 11 20:08:06.741 INFO [stderr]   |     ^^^^^^^^^^^^^^
Dec 11 20:08:06.756 INFO [stderr] 
Dec 11 20:08:06.759 INFO [stderr] warning: unused variable: `e`
Dec 11 20:08:06.759 INFO [stderr]   --> src/tcp_server.rs:37:31
Dec 11 20:08:06.759 INFO [stderr]    |
Dec 11 20:08:06.759 INFO [stderr] 37 |                     .map_err(|e| std::io::Error::new(std::io::ErrorKind::Other, "oh no!"))
Dec 11 20:08:06.760 INFO [stderr]    |                               ^ help: consider using `_e` instead
Dec 11 20:08:06.796 INFO [stderr]    |
Dec 11 20:08:06.797 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 20:08:06.797 INFO [stderr] 
Dec 11 20:08:07.180 INFO [stderr] warning: unused variable: `stdout`
Dec 11 20:08:07.181 INFO [stderr]   --> src/tcp_client.rs:12:13
Dec 11 20:08:07.181 INFO [stderr]    |
Dec 11 20:08:07.181 INFO [stderr] 12 |     let mut stdout = io::stdout();
Dec 11 20:08:07.182 INFO [stderr]    |             ^^^^^^ help: consider using `_stdout` instead
Dec 11 20:08:07.183 INFO [stderr]    |
Dec 11 20:08:07.183 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 20:08:07.183 INFO [stderr] 
Dec 11 20:08:07.260 INFO [stderr] warning: unused import: `tokio::io`
Dec 11 20:08:07.260 INFO [stderr]  --> src/tcp_server.rs:5:5
Dec 11 20:08:07.260 INFO [stderr]   |
Dec 11 20:08:07.260 INFO [stderr] 5 | use tokio::io;
Dec 11 20:08:07.260 INFO [stderr]   |     ^^^^^^^^^
Dec 11 20:08:07.260 INFO [stderr]   |
Dec 11 20:08:07.260 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 20:08:07.260 INFO [stderr] 
Dec 11 20:08:07.364 INFO [stderr] warning: variable does not need to be mutable
Dec 11 20:08:07.365 INFO [stderr]   --> src/tcp_client.rs:12:9
Dec 11 20:08:07.365 INFO [stderr]    |
Dec 11 20:08:07.365 INFO [stderr] 12 |     let mut stdout = io::stdout();
Dec 11 20:08:07.365 INFO [stderr]    |         ----^^^^^^
Dec 11 20:08:07.366 INFO [stderr]    |         |
Dec 11 20:08:07.366 INFO [stderr]    |         help: remove this `mut`
Dec 11 20:08:07.384 INFO [stderr]    |
Dec 11 20:08:07.384 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 11 20:08:07.384 INFO [stderr] 
Dec 11 20:08:07.701 INFO [stderr] warning: unused import: `tokio::prelude`
Dec 11 20:08:07.701 INFO [stderr]  --> src/tcp_server.rs:7:5
Dec 11 20:08:07.702 INFO [stderr]   |
Dec 11 20:08:07.702 INFO [stderr] 7 | use tokio::prelude::*;
Dec 11 20:08:07.702 INFO [stderr]   |     ^^^^^^^^^^^^^^
Dec 11 20:08:07.702 INFO [stderr] 
Dec 11 20:08:07.709 INFO [stderr] warning: unused variable: `e`
Dec 11 20:08:07.709 INFO [stderr]   --> src/tcp_server.rs:37:31
Dec 11 20:08:07.709 INFO [stderr]    |
Dec 11 20:08:07.709 INFO [stderr] 37 |                     .map_err(|e| std::io::Error::new(std::io::ErrorKind::Other, "oh no!"))
Dec 11 20:08:07.709 INFO [stderr]    |                               ^ help: consider using `_e` instead
Dec 11 20:08:07.720 INFO [stderr]    |
Dec 11 20:08:07.720 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 20:08:07.721 INFO [stderr] 
Dec 11 20:08:14.369 INFO [stderr] warning: unused import: `futures::try_ready`
Dec 11 20:08:14.369 INFO [stderr]  --> src/concurrent_send_recv.rs:7:5
Dec 11 20:08:14.369 INFO [stderr]   |
Dec 11 20:08:14.369 INFO [stderr] 7 | use futures::try_ready;
Dec 11 20:08:14.369 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^
Dec 11 20:08:14.369 INFO [stderr]   |
Dec 11 20:08:14.369 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 20:08:14.369 INFO [stderr] 
Dec 11 20:08:14.724 INFO [stderr] warning: unused variable: `e`
Dec 11 20:08:14.724 INFO [stderr]   --> src/tcp_server3.rs:29:31
Dec 11 20:08:14.724 INFO [stderr]    |
Dec 11 20:08:14.724 INFO [stderr] 29 |                     .map_err(|e| std::io::Error::new(std::io::ErrorKind::Other, "oh no!"))
Dec 11 20:08:14.724 INFO [stderr]    |                               ^ help: consider using `_e` instead
Dec 11 20:08:14.724 INFO [stderr]    |
Dec 11 20:08:14.724 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 20:08:14.724 INFO [stderr] 
Dec 11 20:08:16.572 INFO [stderr] warning: unused variable: `stdout`
Dec 11 20:08:16.572 INFO [stderr]   --> src/tcp_client.rs:12:13
Dec 11 20:08:16.572 INFO [stderr]    |
Dec 11 20:08:16.572 INFO [stderr] 12 |     let mut stdout = io::stdout();
Dec 11 20:08:16.572 INFO [stderr]    |             ^^^^^^ help: consider using `_stdout` instead
Dec 11 20:08:16.572 INFO [stderr]    |
Dec 11 20:08:16.572 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 20:08:16.572 INFO [stderr] 
Dec 11 20:08:16.590 INFO [stderr] warning: variable does not need to be mutable
Dec 11 20:08:16.590 INFO [stderr]   --> src/tcp_client.rs:12:9
Dec 11 20:08:16.590 INFO [stderr]    |
Dec 11 20:08:16.590 INFO [stderr] 12 |     let mut stdout = io::stdout();
Dec 11 20:08:16.590 INFO [stderr]    |         ----^^^^^^
Dec 11 20:08:16.590 INFO [stderr]    |         |
Dec 11 20:08:16.590 INFO [stderr]    |         help: remove this `mut`
Dec 11 20:08:16.590 INFO [stderr]    |
Dec 11 20:08:16.590 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 11 20:08:16.590 INFO [stderr] 
Dec 11 20:08:17.228 INFO [stderr] warning: unused import: `futures::try_ready`
Dec 11 20:08:17.228 INFO [stderr]  --> src/concurrent_send_recv2.rs:7:5
Dec 11 20:08:17.228 INFO [stderr]   |
Dec 11 20:08:17.228 INFO [stderr] 7 | use futures::try_ready;
Dec 11 20:08:17.228 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^
Dec 11 20:08:17.228 INFO [stderr]   |
Dec 11 20:08:17.232 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 20:08:17.232 INFO [stderr] 
Dec 11 20:08:20.024 INFO [stderr] warning: unused import: `futures::try_ready`
Dec 11 20:08:20.024 INFO [stderr]  --> src/concurrent_send_recv.rs:7:5
Dec 11 20:08:20.024 INFO [stderr]   |
Dec 11 20:08:20.024 INFO [stderr] 7 | use futures::try_ready;
Dec 11 20:08:20.024 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^
Dec 11 20:08:20.025 INFO [stderr]   |
Dec 11 20:08:20.025 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 20:08:20.025 INFO [stderr] 
Dec 11 20:08:24.205 INFO [stderr] warning: unused variable: `e`
Dec 11 20:08:24.205 INFO [stderr]   --> src/tcp_server3.rs:29:31
Dec 11 20:08:24.205 INFO [stderr]    |
Dec 11 20:08:24.205 INFO [stderr] 29 |                     .map_err(|e| std::io::Error::new(std::io::ErrorKind::Other, "oh no!"))
Dec 11 20:08:24.205 INFO [stderr]    |                               ^ help: consider using `_e` instead
Dec 11 20:08:24.205 INFO [stderr]    |
Dec 11 20:08:24.205 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 20:08:24.205 INFO [stderr] 
Dec 11 20:08:24.324 INFO [stderr] warning: unused import: `futures::try_ready`
Dec 11 20:08:24.324 INFO [stderr]  --> src/concurrent_send_recv2.rs:7:5
Dec 11 20:08:24.324 INFO [stderr]   |
Dec 11 20:08:24.324 INFO [stderr] 7 | use futures::try_ready;
Dec 11 20:08:24.324 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^
Dec 11 20:08:24.324 INFO [stderr]   |
Dec 11 20:08:24.324 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 20:08:24.324 INFO [stderr] 
Dec 11 20:08:24.432 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 41.13s
Dec 11 20:08:24.445 INFO [stderr] su: No module specific data is present
Dec 11 20:08:24.968 INFO running `"docker" "inspect" "417ad759fe433897a20ed81d1804f7b05618c740542106e99b9e838e514efb9b"`
Dec 11 20:08:25.190 INFO running `"docker" "rm" "-f" "417ad759fe433897a20ed81d1804f7b05618c740542106e99b9e838e514efb9b"`
Dec 11 20:08:25.446 INFO [stdout] 417ad759fe433897a20ed81d1804f7b05618c740542106e99b9e838e514efb9b