Dec 05 04:28:07.314 INFO checking way-cooler-ipc-0.0.0 against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 05 04:28:07.314 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-7/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/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 +1df97983eb2057dc6a8f7eb364e263b51ae23230-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 05 04:28:07.634 INFO [stdout] c8cf1c2cd4371a98ce1c9145288ed76e782075289d6110ca372f051dc4b96cfd
Dec 05 04:28:07.636 INFO running `"docker" "start" "-a" "c8cf1c2cd4371a98ce1c9145288ed76e782075289d6110ca372f051dc4b96cfd"`
Dec 05 04:28:08.419 INFO [stderr] usermod: no changes
Dec 05 04:28:08.493 INFO [stderr]     Checking unix_socket v0.5.0
Dec 05 04:28:09.144 INFO [stderr]     Checking way-cooler-ipc v0.0.0 (/source)
Dec 05 04:28:09.647 INFO [stderr] warning: unused import: `ToJson`
Dec 05 04:28:09.647 INFO [stderr]  --> src/message.rs:5:35
Dec 05 04:28:09.647 INFO [stderr]   |
Dec 05 04:28:09.647 INFO [stderr] 5 | use rustc_serialize::json::{Json, ToJson};
Dec 05 04:28:09.647 INFO [stderr]   |                                   ^^^^^^
Dec 05 04:28:09.647 INFO [stderr]   |
Dec 05 04:28:09.647 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 05 04:28:09.647 INFO [stderr] 
Dec 05 04:28:09.647 INFO [stderr] warning: unused imports: `Read`, `Write`
Dec 05 04:28:09.647 INFO [stderr]  --> src/command.rs:5:15
Dec 05 04:28:09.647 INFO [stderr]   |
Dec 05 04:28:09.647 INFO [stderr] 5 | use std::io::{Read, Write};
Dec 05 04:28:09.647 INFO [stderr]   |               ^^^^  ^^^^^
Dec 05 04:28:09.647 INFO [stderr] 
Dec 05 04:28:09.647 INFO [stderr] warning: unused import: `std::io::Error as IOError`
Dec 05 04:28:09.647 INFO [stderr]  --> src/command.rs:7:5
Dec 05 04:28:09.647 INFO [stderr]   |
Dec 05 04:28:09.647 INFO [stderr] 7 | use std::io::Error as IOError;
Dec 05 04:28:09.647 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 04:28:09.647 INFO [stderr] 
Dec 05 04:28:09.719 INFO [stderr] warning: unused variable: `command`
Dec 05 04:28:09.719 INFO [stderr]   --> src/command.rs:22:17
Dec 05 04:28:09.719 INFO [stderr]    |
Dec 05 04:28:09.719 INFO [stderr] 22 |     pub fn send(command: Command) -> CommandResult {
Dec 05 04:28:09.719 INFO [stderr]    |                 ^^^^^^^ help: consider using `_command` instead
Dec 05 04:28:09.719 INFO [stderr]    |
Dec 05 04:28:09.719 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 05 04:28:09.720 INFO [stderr] 
Dec 05 04:28:09.734 INFO [stderr] warning: enum is never used: `SendError`
Dec 05 04:28:09.735 INFO [stderr]   --> src/client.rs:14:1
Dec 05 04:28:09.735 INFO [stderr]    |
Dec 05 04:28:09.735 INFO [stderr] 14 | pub enum SendError {
Dec 05 04:28:09.735 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^
Dec 05 04:28:09.735 INFO [stderr]    |
Dec 05 04:28:09.735 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 05 04:28:09.735 INFO [stderr] 
Dec 05 04:28:09.735 INFO [stderr] warning: enum is never used: `ReceiveError`
Dec 05 04:28:09.735 INFO [stderr]   --> src/client.rs:22:1
Dec 05 04:28:09.735 INFO [stderr]    |
Dec 05 04:28:09.735 INFO [stderr] 22 | pub enum ReceiveError {
Dec 05 04:28:09.735 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^
Dec 05 04:28:09.735 INFO [stderr] 
Dec 05 04:28:09.736 INFO [stderr] warning: field is never used: `stream`
Dec 05 04:28:09.737 INFO [stderr]   --> src/client.rs:32:5
Dec 05 04:28:09.737 INFO [stderr]    |
Dec 05 04:28:09.737 INFO [stderr] 32 |     stream: UnixStream,
Dec 05 04:28:09.737 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^
Dec 05 04:28:09.737 INFO [stderr] 
Dec 05 04:28:09.737 INFO [stderr] warning: function is never used: `u32_to_bytes`
Dec 05 04:28:09.737 INFO [stderr]   --> src/client.rs:37:1
Dec 05 04:28:09.737 INFO [stderr]    |
Dec 05 04:28:09.737 INFO [stderr] 37 | fn u32_to_bytes(input: u32) -> [u8; 4] {
Dec 05 04:28:09.737 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 04:28:09.737 INFO [stderr] 
Dec 05 04:28:09.737 INFO [stderr] warning: function is never used: `u32_from_bytes`
Dec 05 04:28:09.737 INFO [stderr]   --> src/client.rs:43:1
Dec 05 04:28:09.737 INFO [stderr]    |
Dec 05 04:28:09.737 INFO [stderr] 43 | fn u32_from_bytes(bytes: [u8; 4]) -> u32 {
Dec 05 04:28:09.737 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 04:28:09.737 INFO [stderr] 
Dec 05 04:28:09.737 INFO [stderr] warning: method is never used: `stream`
Dec 05 04:28:09.737 INFO [stderr]   --> src/client.rs:54:5
Dec 05 04:28:09.737 INFO [stderr]    |
Dec 05 04:28:09.737 INFO [stderr] 54 |     pub fn stream(&self) -> &UnixStream {
Dec 05 04:28:09.737 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 04:28:09.737 INFO [stderr] 
Dec 05 04:28:09.737 INFO [stderr] warning: method is never used: `stream_mut`
Dec 05 04:28:09.737 INFO [stderr]   --> src/client.rs:59:5
Dec 05 04:28:09.737 INFO [stderr]    |
Dec 05 04:28:09.737 INFO [stderr] 59 |     pub fn stream_mut(&mut self) -> &mut UnixStream {
Dec 05 04:28:09.737 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 04:28:09.737 INFO [stderr] 
Dec 05 04:28:09.737 INFO [stderr] warning: method is never used: `into_stream`
Dec 05 04:28:09.737 INFO [stderr]   --> src/client.rs:64:5
Dec 05 04:28:09.737 INFO [stderr]    |
Dec 05 04:28:09.737 INFO [stderr] 64 |     pub fn into_stream(self) -> UnixStream {
Dec 05 04:28:09.737 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 04:28:09.737 INFO [stderr] 
Dec 05 04:28:09.737 INFO [stderr] warning: method is never used: `read_message`
Dec 05 04:28:09.737 INFO [stderr]   --> src/client.rs:69:5
Dec 05 04:28:09.737 INFO [stderr]    |
Dec 05 04:28:09.737 INFO [stderr] 69 |     pub fn read_message(&mut self) -> Result<Json, ReceiveError> {
Dec 05 04:28:09.737 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 04:28:09.737 INFO [stderr] 
Dec 05 04:28:09.737 INFO [stderr] warning: method is never used: `send_message`
Dec 05 04:28:09.737 INFO [stderr]   --> src/client.rs:78:5
Dec 05 04:28:09.737 INFO [stderr]    |
Dec 05 04:28:09.737 INFO [stderr] 78 |     pub fn send_message(&mut self, message: &Json) -> Result<(), SendError> {
Dec 05 04:28:09.737 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 04:28:09.737 INFO [stderr] 
Dec 05 04:28:09.758 INFO [stderr] warning: unused import: `ToJson`
Dec 05 04:28:09.758 INFO [stderr]  --> src/message.rs:5:35
Dec 05 04:28:09.758 INFO [stderr]   |
Dec 05 04:28:09.758 INFO [stderr] 5 | use rustc_serialize::json::{Json, ToJson};
Dec 05 04:28:09.758 INFO [stderr]   |                                   ^^^^^^
Dec 05 04:28:09.758 INFO [stderr]   |
Dec 05 04:28:09.758 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 05 04:28:09.758 INFO [stderr] 
Dec 05 04:28:09.764 INFO [stderr] warning: unused imports: `Read`, `Write`
Dec 05 04:28:09.764 INFO [stderr]  --> src/command.rs:5:15
Dec 05 04:28:09.764 INFO [stderr]   |
Dec 05 04:28:09.764 INFO [stderr] 5 | use std::io::{Read, Write};
Dec 05 04:28:09.764 INFO [stderr]   |               ^^^^  ^^^^^
Dec 05 04:28:09.764 INFO [stderr] 
Dec 05 04:28:09.764 INFO [stderr] warning: unused import: `std::io::Error as IOError`
Dec 05 04:28:09.764 INFO [stderr]  --> src/command.rs:7:5
Dec 05 04:28:09.764 INFO [stderr]   |
Dec 05 04:28:09.764 INFO [stderr] 7 | use std::io::Error as IOError;
Dec 05 04:28:09.764 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 04:28:09.764 INFO [stderr] 
Dec 05 04:28:09.835 INFO [stderr] warning: unused variable: `command`
Dec 05 04:28:09.835 INFO [stderr]   --> src/command.rs:22:17
Dec 05 04:28:09.835 INFO [stderr]    |
Dec 05 04:28:09.835 INFO [stderr] 22 |     pub fn send(command: Command) -> CommandResult {
Dec 05 04:28:09.835 INFO [stderr]    |                 ^^^^^^^ help: consider using `_command` instead
Dec 05 04:28:09.835 INFO [stderr]    |
Dec 05 04:28:09.835 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 05 04:28:09.835 INFO [stderr] 
Dec 05 04:28:09.847 INFO [stderr] warning: enum is never used: `SendError`
Dec 05 04:28:09.847 INFO [stderr]   --> src/client.rs:14:1
Dec 05 04:28:09.847 INFO [stderr]    |
Dec 05 04:28:09.847 INFO [stderr] 14 | pub enum SendError {
Dec 05 04:28:09.847 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^
Dec 05 04:28:09.847 INFO [stderr]    |
Dec 05 04:28:09.847 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 05 04:28:09.847 INFO [stderr] 
Dec 05 04:28:09.847 INFO [stderr] warning: enum is never used: `ReceiveError`
Dec 05 04:28:09.847 INFO [stderr]   --> src/client.rs:22:1
Dec 05 04:28:09.847 INFO [stderr]    |
Dec 05 04:28:09.847 INFO [stderr] 22 | pub enum ReceiveError {
Dec 05 04:28:09.847 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^
Dec 05 04:28:09.847 INFO [stderr] 
Dec 05 04:28:09.847 INFO [stderr] warning: field is never used: `stream`
Dec 05 04:28:09.847 INFO [stderr]   --> src/client.rs:32:5
Dec 05 04:28:09.847 INFO [stderr]    |
Dec 05 04:28:09.847 INFO [stderr] 32 |     stream: UnixStream,
Dec 05 04:28:09.847 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^
Dec 05 04:28:09.847 INFO [stderr] 
Dec 05 04:28:09.847 INFO [stderr] warning: function is never used: `u32_to_bytes`
Dec 05 04:28:09.847 INFO [stderr]   --> src/client.rs:37:1
Dec 05 04:28:09.847 INFO [stderr]    |
Dec 05 04:28:09.847 INFO [stderr] 37 | fn u32_to_bytes(input: u32) -> [u8; 4] {
Dec 05 04:28:09.847 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 04:28:09.847 INFO [stderr] 
Dec 05 04:28:09.847 INFO [stderr] warning: function is never used: `u32_from_bytes`
Dec 05 04:28:09.847 INFO [stderr]   --> src/client.rs:43:1
Dec 05 04:28:09.847 INFO [stderr]    |
Dec 05 04:28:09.847 INFO [stderr] 43 | fn u32_from_bytes(bytes: [u8; 4]) -> u32 {
Dec 05 04:28:09.847 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 04:28:09.847 INFO [stderr] 
Dec 05 04:28:09.849 INFO [stderr] warning: method is never used: `stream`
Dec 05 04:28:09.849 INFO [stderr]   --> src/client.rs:54:5
Dec 05 04:28:09.849 INFO [stderr]    |
Dec 05 04:28:09.849 INFO [stderr] 54 |     pub fn stream(&self) -> &UnixStream {
Dec 05 04:28:09.849 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 04:28:09.849 INFO [stderr] 
Dec 05 04:28:09.849 INFO [stderr] warning: method is never used: `stream_mut`
Dec 05 04:28:09.849 INFO [stderr]   --> src/client.rs:59:5
Dec 05 04:28:09.849 INFO [stderr]    |
Dec 05 04:28:09.849 INFO [stderr] 59 |     pub fn stream_mut(&mut self) -> &mut UnixStream {
Dec 05 04:28:09.850 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 04:28:09.850 INFO [stderr] 
Dec 05 04:28:09.850 INFO [stderr] warning: method is never used: `into_stream`
Dec 05 04:28:09.850 INFO [stderr]   --> src/client.rs:64:5
Dec 05 04:28:09.850 INFO [stderr]    |
Dec 05 04:28:09.850 INFO [stderr] 64 |     pub fn into_stream(self) -> UnixStream {
Dec 05 04:28:09.850 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 04:28:09.850 INFO [stderr] 
Dec 05 04:28:09.850 INFO [stderr] warning: method is never used: `read_message`
Dec 05 04:28:09.850 INFO [stderr]   --> src/client.rs:69:5
Dec 05 04:28:09.850 INFO [stderr]    |
Dec 05 04:28:09.850 INFO [stderr] 69 |     pub fn read_message(&mut self) -> Result<Json, ReceiveError> {
Dec 05 04:28:09.850 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 04:28:09.850 INFO [stderr] 
Dec 05 04:28:09.850 INFO [stderr] warning: method is never used: `send_message`
Dec 05 04:28:09.850 INFO [stderr]   --> src/client.rs:78:5
Dec 05 04:28:09.850 INFO [stderr]    |
Dec 05 04:28:09.850 INFO [stderr] 78 |     pub fn send_message(&mut self, message: &Json) -> Result<(), SendError> {
Dec 05 04:28:09.850 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 04:28:09.850 INFO [stderr] 
Dec 05 04:28:09.862 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.42s
Dec 05 04:28:09.864 INFO [stderr] su: No module specific data is present
Dec 05 04:28:10.190 INFO running `"docker" "inspect" "c8cf1c2cd4371a98ce1c9145288ed76e782075289d6110ca372f051dc4b96cfd"`
Dec 05 04:28:10.440 INFO running `"docker" "rm" "-f" "c8cf1c2cd4371a98ce1c9145288ed76e782075289d6110ca372f051dc4b96cfd"`
Dec 05 04:28:10.649 INFO [stdout] c8cf1c2cd4371a98ce1c9145288ed76e782075289d6110ca372f051dc4b96cfd