Dec 18 09:23:50.125 INFO checking way-cooler-ipc-0.0.0 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 09:23:50.125 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-2/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/reg/way-cooler-ipc/0.0.0:/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 09:23:50.333 INFO [stdout] 2c9dcc2f48234e2893a7e01772ac666338e5eb0035bc9abdf022aa24680338a7
Dec 18 09:23:50.340 INFO running `"docker" "start" "-a" "2c9dcc2f48234e2893a7e01772ac666338e5eb0035bc9abdf022aa24680338a7"`
Dec 18 09:23:51.389 INFO [stderr]     Checking way-cooler-ipc v0.0.0 (/opt/crater/workdir)
Dec 18 09:23:51.588 INFO [stderr] warning: unused import: `ToJson`
Dec 18 09:23:51.588 INFO [stderr]  --> src/message.rs:5:35
Dec 18 09:23:51.588 INFO [stderr]   |
Dec 18 09:23:51.588 INFO [stderr] 5 | use rustc_serialize::json::{Json, ToJson};
Dec 18 09:23:51.588 INFO [stderr]   |                                   ^^^^^^
Dec 18 09:23:51.588 INFO [stderr]   |
Dec 18 09:23:51.588 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 09:23:51.588 INFO [stderr] 
Dec 18 09:23:51.588 INFO [stderr] warning: unused imports: `Read`, `Write`
Dec 18 09:23:51.588 INFO [stderr]  --> src/command.rs:5:15
Dec 18 09:23:51.588 INFO [stderr]   |
Dec 18 09:23:51.589 INFO [stderr] 5 | use std::io::{Read, Write};
Dec 18 09:23:51.589 INFO [stderr]   |               ^^^^  ^^^^^
Dec 18 09:23:51.589 INFO [stderr] 
Dec 18 09:23:51.589 INFO [stderr] warning: unused import: `std::io::Error as IOError`
Dec 18 09:23:51.589 INFO [stderr]  --> src/command.rs:7:5
Dec 18 09:23:51.589 INFO [stderr]   |
Dec 18 09:23:51.589 INFO [stderr] 7 | use std::io::Error as IOError;
Dec 18 09:23:51.589 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 09:23:51.589 INFO [stderr] 
Dec 18 09:23:51.612 INFO [stderr] warning: unused import: `ToJson`
Dec 18 09:23:51.612 INFO [stderr]  --> src/message.rs:5:35
Dec 18 09:23:51.612 INFO [stderr]   |
Dec 18 09:23:51.612 INFO [stderr] 5 | use rustc_serialize::json::{Json, ToJson};
Dec 18 09:23:51.612 INFO [stderr]   |                                   ^^^^^^
Dec 18 09:23:51.612 INFO [stderr]   |
Dec 18 09:23:51.612 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 09:23:51.612 INFO [stderr] 
Dec 18 09:23:51.616 INFO [stderr] warning: unused imports: `Read`, `Write`
Dec 18 09:23:51.616 INFO [stderr]  --> src/command.rs:5:15
Dec 18 09:23:51.616 INFO [stderr]   |
Dec 18 09:23:51.616 INFO [stderr] 5 | use std::io::{Read, Write};
Dec 18 09:23:51.616 INFO [stderr]   |               ^^^^  ^^^^^
Dec 18 09:23:51.616 INFO [stderr] 
Dec 18 09:23:51.616 INFO [stderr] warning: unused import: `std::io::Error as IOError`
Dec 18 09:23:51.616 INFO [stderr]  --> src/command.rs:7:5
Dec 18 09:23:51.616 INFO [stderr]   |
Dec 18 09:23:51.616 INFO [stderr] 7 | use std::io::Error as IOError;
Dec 18 09:23:51.616 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 09:23:51.616 INFO [stderr] 
Dec 18 09:23:51.668 INFO [stderr] warning: unused variable: `command`
Dec 18 09:23:51.668 INFO [stderr]   --> src/command.rs:22:17
Dec 18 09:23:51.668 INFO [stderr]    |
Dec 18 09:23:51.668 INFO [stderr] 22 |     pub fn send(command: Command) -> CommandResult {
Dec 18 09:23:51.668 INFO [stderr]    |                 ^^^^^^^ help: consider using `_command` instead
Dec 18 09:23:51.668 INFO [stderr]    |
Dec 18 09:23:51.668 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 09:23:51.668 INFO [stderr] 
Dec 18 09:23:51.680 INFO [stderr] warning: enum is never used: `SendError`
Dec 18 09:23:51.680 INFO [stderr]   --> src/client.rs:14:1
Dec 18 09:23:51.680 INFO [stderr]    |
Dec 18 09:23:51.680 INFO [stderr] 14 | pub enum SendError {
Dec 18 09:23:51.680 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^
Dec 18 09:23:51.680 INFO [stderr]    |
Dec 18 09:23:51.680 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 09:23:51.680 INFO [stderr] 
Dec 18 09:23:51.680 INFO [stderr] warning: enum is never used: `ReceiveError`
Dec 18 09:23:51.680 INFO [stderr]   --> src/client.rs:22:1
Dec 18 09:23:51.680 INFO [stderr]    |
Dec 18 09:23:51.680 INFO [stderr] 22 | pub enum ReceiveError {
Dec 18 09:23:51.680 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^
Dec 18 09:23:51.680 INFO [stderr] 
Dec 18 09:23:51.681 INFO [stderr] warning: field is never used: `stream`
Dec 18 09:23:51.681 INFO [stderr]   --> src/client.rs:32:5
Dec 18 09:23:51.681 INFO [stderr]    |
Dec 18 09:23:51.681 INFO [stderr] 32 |     stream: UnixStream,
Dec 18 09:23:51.681 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^
Dec 18 09:23:51.681 INFO [stderr] 
Dec 18 09:23:51.681 INFO [stderr] warning: function is never used: `u32_to_bytes`
Dec 18 09:23:51.681 INFO [stderr]   --> src/client.rs:37:1
Dec 18 09:23:51.681 INFO [stderr]    |
Dec 18 09:23:51.681 INFO [stderr] 37 | fn u32_to_bytes(input: u32) -> [u8; 4] {
Dec 18 09:23:51.681 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 09:23:51.681 INFO [stderr] 
Dec 18 09:23:51.681 INFO [stderr] warning: function is never used: `u32_from_bytes`
Dec 18 09:23:51.681 INFO [stderr]   --> src/client.rs:43:1
Dec 18 09:23:51.681 INFO [stderr]    |
Dec 18 09:23:51.681 INFO [stderr] 43 | fn u32_from_bytes(bytes: [u8; 4]) -> u32 {
Dec 18 09:23:51.681 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 09:23:51.681 INFO [stderr] 
Dec 18 09:23:51.681 INFO [stderr] warning: method is never used: `stream`
Dec 18 09:23:51.681 INFO [stderr]   --> src/client.rs:54:5
Dec 18 09:23:51.681 INFO [stderr]    |
Dec 18 09:23:51.681 INFO [stderr] 54 |     pub fn stream(&self) -> &UnixStream {
Dec 18 09:23:51.681 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 09:23:51.681 INFO [stderr] 
Dec 18 09:23:51.681 INFO [stderr] warning: method is never used: `stream_mut`
Dec 18 09:23:51.681 INFO [stderr]   --> src/client.rs:59:5
Dec 18 09:23:51.681 INFO [stderr]    |
Dec 18 09:23:51.681 INFO [stderr] 59 |     pub fn stream_mut(&mut self) -> &mut UnixStream {
Dec 18 09:23:51.681 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 09:23:51.681 INFO [stderr] 
Dec 18 09:23:51.681 INFO [stderr] warning: method is never used: `into_stream`
Dec 18 09:23:51.681 INFO [stderr]   --> src/client.rs:64:5
Dec 18 09:23:51.681 INFO [stderr]    |
Dec 18 09:23:51.681 INFO [stderr] 64 |     pub fn into_stream(self) -> UnixStream {
Dec 18 09:23:51.681 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 09:23:51.681 INFO [stderr] 
Dec 18 09:23:51.681 INFO [stderr] warning: method is never used: `read_message`
Dec 18 09:23:51.681 INFO [stderr]   --> src/client.rs:69:5
Dec 18 09:23:51.681 INFO [stderr]    |
Dec 18 09:23:51.681 INFO [stderr] 69 |     pub fn read_message(&mut self) -> Result<Json, ReceiveError> {
Dec 18 09:23:51.681 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 09:23:51.681 INFO [stderr] 
Dec 18 09:23:51.681 INFO [stderr] warning: method is never used: `send_message`
Dec 18 09:23:51.681 INFO [stderr]   --> src/client.rs:78:5
Dec 18 09:23:51.681 INFO [stderr]    |
Dec 18 09:23:51.681 INFO [stderr] 78 |     pub fn send_message(&mut self, message: &Json) -> Result<(), SendError> {
Dec 18 09:23:51.681 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 09:23:51.681 INFO [stderr] 
Dec 18 09:23:51.690 INFO [stderr] warning: unused variable: `command`
Dec 18 09:23:51.690 INFO [stderr]   --> src/command.rs:22:17
Dec 18 09:23:51.690 INFO [stderr]    |
Dec 18 09:23:51.690 INFO [stderr] 22 |     pub fn send(command: Command) -> CommandResult {
Dec 18 09:23:51.690 INFO [stderr]    |                 ^^^^^^^ help: consider using `_command` instead
Dec 18 09:23:51.690 INFO [stderr]    |
Dec 18 09:23:51.690 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 09:23:51.690 INFO [stderr] 
Dec 18 09:23:51.705 INFO [stderr] warning: enum is never used: `SendError`
Dec 18 09:23:51.705 INFO [stderr]   --> src/client.rs:14:1
Dec 18 09:23:51.705 INFO [stderr]    |
Dec 18 09:23:51.705 INFO [stderr] 14 | pub enum SendError {
Dec 18 09:23:51.705 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^
Dec 18 09:23:51.705 INFO [stderr]    |
Dec 18 09:23:51.705 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 09:23:51.705 INFO [stderr] 
Dec 18 09:23:51.705 INFO [stderr] warning: enum is never used: `ReceiveError`
Dec 18 09:23:51.705 INFO [stderr]   --> src/client.rs:22:1
Dec 18 09:23:51.705 INFO [stderr]    |
Dec 18 09:23:51.705 INFO [stderr] 22 | pub enum ReceiveError {
Dec 18 09:23:51.705 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^
Dec 18 09:23:51.705 INFO [stderr] 
Dec 18 09:23:51.705 INFO [stderr] warning: field is never used: `stream`
Dec 18 09:23:51.705 INFO [stderr]   --> src/client.rs:32:5
Dec 18 09:23:51.705 INFO [stderr]    |
Dec 18 09:23:51.705 INFO [stderr] 32 |     stream: UnixStream,
Dec 18 09:23:51.705 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^
Dec 18 09:23:51.705 INFO [stderr] 
Dec 18 09:23:51.705 INFO [stderr] warning: function is never used: `u32_to_bytes`
Dec 18 09:23:51.705 INFO [stderr]   --> src/client.rs:37:1
Dec 18 09:23:51.705 INFO [stderr]    |
Dec 18 09:23:51.705 INFO [stderr] 37 | fn u32_to_bytes(input: u32) -> [u8; 4] {
Dec 18 09:23:51.705 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 09:23:51.705 INFO [stderr] 
Dec 18 09:23:51.705 INFO [stderr] warning: function is never used: `u32_from_bytes`
Dec 18 09:23:51.705 INFO [stderr]   --> src/client.rs:43:1
Dec 18 09:23:51.705 INFO [stderr]    |
Dec 18 09:23:51.705 INFO [stderr] 43 | fn u32_from_bytes(bytes: [u8; 4]) -> u32 {
Dec 18 09:23:51.705 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 09:23:51.705 INFO [stderr] 
Dec 18 09:23:51.705 INFO [stderr] warning: method is never used: `stream`
Dec 18 09:23:51.705 INFO [stderr]   --> src/client.rs:54:5
Dec 18 09:23:51.705 INFO [stderr]    |
Dec 18 09:23:51.705 INFO [stderr] 54 |     pub fn stream(&self) -> &UnixStream {
Dec 18 09:23:51.705 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 09:23:51.705 INFO [stderr] 
Dec 18 09:23:51.705 INFO [stderr] warning: method is never used: `stream_mut`
Dec 18 09:23:51.705 INFO [stderr]   --> src/client.rs:59:5
Dec 18 09:23:51.705 INFO [stderr]    |
Dec 18 09:23:51.705 INFO [stderr] 59 |     pub fn stream_mut(&mut self) -> &mut UnixStream {
Dec 18 09:23:51.705 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 09:23:51.705 INFO [stderr] 
Dec 18 09:23:51.705 INFO [stderr] warning: method is never used: `into_stream`
Dec 18 09:23:51.705 INFO [stderr]   --> src/client.rs:64:5
Dec 18 09:23:51.705 INFO [stderr]    |
Dec 18 09:23:51.705 INFO [stderr] 64 |     pub fn into_stream(self) -> UnixStream {
Dec 18 09:23:51.705 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 09:23:51.705 INFO [stderr] 
Dec 18 09:23:51.705 INFO [stderr] warning: method is never used: `read_message`
Dec 18 09:23:51.705 INFO [stderr]   --> src/client.rs:69:5
Dec 18 09:23:51.705 INFO [stderr]    |
Dec 18 09:23:51.705 INFO [stderr] 69 |     pub fn read_message(&mut self) -> Result<Json, ReceiveError> {
Dec 18 09:23:51.705 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 09:23:51.705 INFO [stderr] 
Dec 18 09:23:51.705 INFO [stderr] warning: method is never used: `send_message`
Dec 18 09:23:51.705 INFO [stderr]   --> src/client.rs:78:5
Dec 18 09:23:51.705 INFO [stderr]    |
Dec 18 09:23:51.705 INFO [stderr] 78 |     pub fn send_message(&mut self, message: &Json) -> Result<(), SendError> {
Dec 18 09:23:51.705 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 09:23:51.705 INFO [stderr] 
Dec 18 09:23:51.724 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.35s
Dec 18 09:23:51.959 INFO running `"docker" "inspect" "2c9dcc2f48234e2893a7e01772ac666338e5eb0035bc9abdf022aa24680338a7"`
Dec 18 09:23:52.083 INFO running `"docker" "rm" "-f" "2c9dcc2f48234e2893a7e01772ac666338e5eb0035bc9abdf022aa24680338a7"`
Dec 18 09:23:52.187 INFO [stdout] 2c9dcc2f48234e2893a7e01772ac666338e5eb0035bc9abdf022aa24680338a7