Dec 11 16:52:40.529 INFO checking irtefa/line-chat against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 11 16:52:40.530 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-0/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/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 16:52:41.008 INFO [stdout] 91bbb2267a6679625b565655dd45365f234ac26727b8dce2c41c4c643db9f09d
Dec 11 16:52:41.010 INFO running `"docker" "start" "-a" "91bbb2267a6679625b565655dd45365f234ac26727b8dce2c41c4c643db9f09d"`
Dec 11 16:52:41.962 INFO [stderr] usermod: no changes
Dec 11 16:52:42.080 INFO [stderr]     Checking line-chat v0.1.0 (/source)
Dec 11 16:52:43.024 INFO [stderr] warning: unused import: `TcpStream`
Dec 11 16:52:43.024 INFO [stderr]  --> src/main.rs:9:31
Dec 11 16:52:43.024 INFO [stderr]   |
Dec 11 16:52:43.024 INFO [stderr] 9 | use tokio::net::{TcpListener, TcpStream};
Dec 11 16:52:43.024 INFO [stderr]   |                               ^^^^^^^^^
Dec 11 16:52:43.024 INFO [stderr]   |
Dec 11 16:52:43.024 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 16:52:43.024 INFO [stderr] 
Dec 11 16:52:43.024 INFO [stderr] warning: unused import: `AsyncRead`
Dec 11 16:52:43.024 INFO [stderr]   --> src/main.rs:10:16
Dec 11 16:52:43.024 INFO [stderr]    |
Dec 11 16:52:43.024 INFO [stderr] 10 | use tokio_io::{AsyncRead};
Dec 11 16:52:43.024 INFO [stderr]    |                ^^^^^^^^^
Dec 11 16:52:43.024 INFO [stderr] 
Dec 11 16:52:43.024 INFO [stderr] warning: unused imports: `Either`, `self`
Dec 11 16:52:43.024 INFO [stderr]   --> src/main.rs:13:23
Dec 11 16:52:43.024 INFO [stderr]    |
Dec 11 16:52:43.024 INFO [stderr] 13 | use futures::future::{self, Either};
Dec 11 16:52:43.024 INFO [stderr]    |                       ^^^^  ^^^^^^
Dec 11 16:52:43.024 INFO [stderr] 
Dec 11 16:52:43.024 INFO [stderr] warning: unused imports: `BufMut`, `BytesMut`
Dec 11 16:52:43.024 INFO [stderr]   --> src/main.rs:14:13
Dec 11 16:52:43.024 INFO [stderr]    |
Dec 11 16:52:43.024 INFO [stderr] 14 | use bytes::{BytesMut, Bytes, BufMut};
Dec 11 16:52:43.024 INFO [stderr]    |             ^^^^^^^^         ^^^^^^
Dec 11 16:52:43.024 INFO [stderr] 
Dec 11 16:52:43.024 INFO [stderr] warning: unused imports: `Write`, `self`
Dec 11 16:52:43.024 INFO [stderr]   --> src/main.rs:16:15
Dec 11 16:52:43.024 INFO [stderr]    |
Dec 11 16:52:43.024 INFO [stderr] 16 | use std::io::{self, Write};
Dec 11 16:52:43.024 INFO [stderr]    |               ^^^^  ^^^^^
Dec 11 16:52:43.024 INFO [stderr] 
Dec 11 16:52:43.024 INFO [stderr] warning: unused import: `std::cell::RefCell`
Dec 11 16:52:43.024 INFO [stderr]   --> src/main.rs:17:5
Dec 11 16:52:43.024 INFO [stderr]    |
Dec 11 16:52:43.024 INFO [stderr] 17 | use std::cell::RefCell;
Dec 11 16:52:43.024 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^
Dec 11 16:52:43.024 INFO [stderr] 
Dec 11 16:52:43.024 INFO [stderr] warning: unused import: `std::collections::HashMap`
Dec 11 16:52:43.024 INFO [stderr]   --> src/main.rs:18:5
Dec 11 16:52:43.024 INFO [stderr]    |
Dec 11 16:52:43.024 INFO [stderr] 18 | use std::collections::HashMap;
Dec 11 16:52:43.024 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 16:52:43.024 INFO [stderr] 
Dec 11 16:52:43.024 INFO [stderr] warning: unused import: `std::rc::Rc`
Dec 11 16:52:43.024 INFO [stderr]   --> src/main.rs:20:5
Dec 11 16:52:43.024 INFO [stderr]    |
Dec 11 16:52:43.025 INFO [stderr] 20 | use std::rc::Rc;
Dec 11 16:52:43.025 INFO [stderr]    |     ^^^^^^^^^^^
Dec 11 16:52:43.025 INFO [stderr] 
Dec 11 16:52:43.078 INFO [stderr] warning: unused variable: `socket`
Dec 11 16:52:43.079 INFO [stderr]   --> src/main.rs:33:53
Dec 11 16:52:43.079 INFO [stderr]    |
Dec 11 16:52:43.079 INFO [stderr] 33 |     let server = listener.incoming().for_each(move |socket| {
Dec 11 16:52:43.079 INFO [stderr]    |                                                     ^^^^^^ help: consider using `_socket` instead
Dec 11 16:52:43.079 INFO [stderr]    |
Dec 11 16:52:43.079 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 16:52:43.079 INFO [stderr] 
Dec 11 16:52:43.093 INFO [stderr] warning: type alias is never used: `Tx`
Dec 11 16:52:43.093 INFO [stderr]   --> src/main.rs:23:1
Dec 11 16:52:43.093 INFO [stderr]    |
Dec 11 16:52:43.093 INFO [stderr] 23 | type Tx = mpsc::UnboundedSender<Bytes>;
Dec 11 16:52:43.093 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 16:52:43.093 INFO [stderr]    |
Dec 11 16:52:43.093 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 16:52:43.093 INFO [stderr] 
Dec 11 16:52:43.093 INFO [stderr] warning: type alias is never used: `Rx`
Dec 11 16:52:43.093 INFO [stderr]   --> src/main.rs:26:1
Dec 11 16:52:43.093 INFO [stderr]    |
Dec 11 16:52:43.093 INFO [stderr] 26 | type Rx = mpsc::UnboundedReceiver<Bytes>;
Dec 11 16:52:43.093 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 16:52:43.093 INFO [stderr] 
Dec 11 16:52:43.105 INFO [stderr] warning: unused import: `TcpStream`
Dec 11 16:52:43.105 INFO [stderr]  --> src/main.rs:9:31
Dec 11 16:52:43.105 INFO [stderr]   |
Dec 11 16:52:43.106 INFO [stderr] 9 | use tokio::net::{TcpListener, TcpStream};
Dec 11 16:52:43.106 INFO [stderr]   |                               ^^^^^^^^^
Dec 11 16:52:43.106 INFO [stderr]   |
Dec 11 16:52:43.107 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 16:52:43.107 INFO [stderr] 
Dec 11 16:52:43.107 INFO [stderr] warning: unused import: `AsyncRead`
Dec 11 16:52:43.107 INFO [stderr]   --> src/main.rs:10:16
Dec 11 16:52:43.108 INFO [stderr]    |
Dec 11 16:52:43.108 INFO [stderr] 10 | use tokio_io::{AsyncRead};
Dec 11 16:52:43.108 INFO [stderr]    |                ^^^^^^^^^
Dec 11 16:52:43.108 INFO [stderr] 
Dec 11 16:52:43.109 INFO [stderr] warning: unused imports: `Either`, `self`
Dec 11 16:52:43.109 INFO [stderr]   --> src/main.rs:13:23
Dec 11 16:52:43.109 INFO [stderr]    |
Dec 11 16:52:43.109 INFO [stderr] 13 | use futures::future::{self, Either};
Dec 11 16:52:43.110 INFO [stderr]    |                       ^^^^  ^^^^^^
Dec 11 16:52:43.110 INFO [stderr] 
Dec 11 16:52:43.110 INFO [stderr] warning: unused imports: `BufMut`, `BytesMut`
Dec 11 16:52:43.110 INFO [stderr]   --> src/main.rs:14:13
Dec 11 16:52:43.111 INFO [stderr]    |
Dec 11 16:52:43.111 INFO [stderr] 14 | use bytes::{BytesMut, Bytes, BufMut};
Dec 11 16:52:43.111 INFO [stderr]    |             ^^^^^^^^         ^^^^^^
Dec 11 16:52:43.111 INFO [stderr] 
Dec 11 16:52:43.112 INFO [stderr] warning: unused imports: `Write`, `self`
Dec 11 16:52:43.112 INFO [stderr]   --> src/main.rs:16:15
Dec 11 16:52:43.112 INFO [stderr]    |
Dec 11 16:52:43.112 INFO [stderr] 16 | use std::io::{self, Write};
Dec 11 16:52:43.112 INFO [stderr]    |               ^^^^  ^^^^^
Dec 11 16:52:43.113 INFO [stderr] 
Dec 11 16:52:43.113 INFO [stderr] warning: unused import: `std::cell::RefCell`
Dec 11 16:52:43.113 INFO [stderr]   --> src/main.rs:17:5
Dec 11 16:52:43.113 INFO [stderr]    |
Dec 11 16:52:43.113 INFO [stderr] 17 | use std::cell::RefCell;
Dec 11 16:52:43.113 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^
Dec 11 16:52:43.114 INFO [stderr] 
Dec 11 16:52:43.114 INFO [stderr] warning: unused import: `std::collections::HashMap`
Dec 11 16:52:43.114 INFO [stderr]   --> src/main.rs:18:5
Dec 11 16:52:43.114 INFO [stderr]    |
Dec 11 16:52:43.115 INFO [stderr] 18 | use std::collections::HashMap;
Dec 11 16:52:43.115 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 16:52:43.115 INFO [stderr] 
Dec 11 16:52:43.115 INFO [stderr] warning: unused import: `std::rc::Rc`
Dec 11 16:52:43.115 INFO [stderr]   --> src/main.rs:20:5
Dec 11 16:52:43.116 INFO [stderr]    |
Dec 11 16:52:43.116 INFO [stderr] 20 | use std::rc::Rc;
Dec 11 16:52:43.116 INFO [stderr]    |     ^^^^^^^^^^^
Dec 11 16:52:43.116 INFO [stderr] 
Dec 11 16:52:43.152 INFO [stderr] warning: unused variable: `socket`
Dec 11 16:52:43.152 INFO [stderr]   --> src/main.rs:33:53
Dec 11 16:52:43.153 INFO [stderr]    |
Dec 11 16:52:43.153 INFO [stderr] 33 |     let server = listener.incoming().for_each(move |socket| {
Dec 11 16:52:43.153 INFO [stderr]    |                                                     ^^^^^^ help: consider using `_socket` instead
Dec 11 16:52:43.154 INFO [stderr]    |
Dec 11 16:52:43.154 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 16:52:43.154 INFO [stderr] 
Dec 11 16:52:43.160 INFO [stderr] warning: type alias is never used: `Tx`
Dec 11 16:52:43.160 INFO [stderr]   --> src/main.rs:23:1
Dec 11 16:52:43.161 INFO [stderr]    |
Dec 11 16:52:43.161 INFO [stderr] 23 | type Tx = mpsc::UnboundedSender<Bytes>;
Dec 11 16:52:43.161 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 16:52:43.161 INFO [stderr]    |
Dec 11 16:52:43.162 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 16:52:43.162 INFO [stderr] 
Dec 11 16:52:43.162 INFO [stderr] warning: type alias is never used: `Rx`
Dec 11 16:52:43.163 INFO [stderr]   --> src/main.rs:26:1
Dec 11 16:52:43.163 INFO [stderr]    |
Dec 11 16:52:43.163 INFO [stderr] 26 | type Rx = mpsc::UnboundedReceiver<Bytes>;
Dec 11 16:52:43.163 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 16:52:43.164 INFO [stderr] 
Dec 11 16:52:43.201 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.21s
Dec 11 16:52:43.205 INFO [stderr] su: No module specific data is present
Dec 11 16:52:44.128 INFO running `"docker" "inspect" "91bbb2267a6679625b565655dd45365f234ac26727b8dce2c41c4c643db9f09d"`
Dec 11 16:52:44.409 INFO running `"docker" "rm" "-f" "91bbb2267a6679625b565655dd45365f234ac26727b8dce2c41c4c643db9f09d"`
Dec 11 16:52:44.792 INFO [stdout] 91bbb2267a6679625b565655dd45365f234ac26727b8dce2c41c4c643db9f09d