[INFO] cloning repository https://github.com/JeepYiheihou/lovol
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JeepYiheihou/lovol" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJeepYiheihou%2Flovol", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJeepYiheihou%2Flovol'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e19c0477e59945262b481d1dab1f1e134c375d4d
[INFO] checking JeepYiheihou/lovol against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJeepYiheihou%2Flovol" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JeepYiheihou/lovol on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/JeepYiheihou/lovol
[INFO] finished tweaking git repo https://github.com/JeepYiheihou/lovol
[INFO] tweaked toml for git repo https://github.com/JeepYiheihou/lovol written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/JeepYiheihou/lovol already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d7e75dda3b6ab13138bfc26150c004720f5af65ef9d185df640e2248612747ab
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d7e75dda3b6ab13138bfc26150c004720f5af65ef9d185df640e2248612747ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d7e75dda3b6ab13138bfc26150c004720f5af65ef9d185df640e2248612747ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7e75dda3b6ab13138bfc26150c004720f5af65ef9d185df640e2248612747ab", kill_on_drop: false }`
[INFO] [stdout] d7e75dda3b6ab13138bfc26150c004720f5af65ef9d185df640e2248612747ab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b9356d04c334c6942cec2c34419a46696bab3ab4d2365bda5673a567bf8d4dd9
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b9356d04c334c6942cec2c34419a46696bab3ab4d2365bda5673a567bf8d4dd9", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling syn v1.0.18
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking arc-swap v0.4.6
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]     Checking tokio v0.2.19
[INFO] [stderr]     Checking lovol v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `tokio`
[INFO] [stdout]  --> src/client.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use tokio;
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SocketAddr`
[INFO] [stdout]  --> src/client.rs:2:16
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::net::{SocketAddr, TcpStream};
[INFO] [stdout]   |                ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/client.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio`
[INFO] [stdout]  --> src/client.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use tokio;
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SocketAddr`
[INFO] [stdout]  --> src/client.rs:2:16
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::net::{SocketAddr, TcpStream};
[INFO] [stdout]   |                ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/client.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `receive`
[INFO] [stdout]  --> src/fane.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub fn receive(&mut self, _signal: &str) -> Result<(), Error>  {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `broadcast`
[INFO] [stdout]   --> src/fane.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn broadcast(&mut self, _signal: &str) -> Result<(), Error>  {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `turn_on`
[INFO] [stdout]   --> src/fane.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn turn_on(&mut self) -> Result<(), Error> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `turn_off`
[INFO] [stdout]   --> src/fane.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn turn_off(&mut self) -> Result<(), Error> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_status`
[INFO] [stdout]   --> src/fane.rs:42:12
[INFO] [stdout]    |
[INFO] [stdout] 42 |     pub fn read_status(&mut self) -> Result<(), Error> {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `receive`
[INFO] [stdout]  --> src/lohse.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub fn receive(&mut self, _signal: &str) -> Result<(), Error>  {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `transmit`
[INFO] [stdout]   --> src/lohse.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn transmit(&mut self, _signal: &str) -> Result<(), Error>  {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `turn_on`
[INFO] [stdout]   --> src/lohse.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn turn_on(&mut self) -> Result<(), Error> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `turn_off`
[INFO] [stdout]   --> src/lohse.rs:39:12
[INFO] [stdout]    |
[INFO] [stdout] 39 |     pub fn turn_off(&mut self) -> Result<(), Error> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `toggle_lamp`
[INFO] [stdout]   --> src/lohse.rs:48:12
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn toggle_lamp(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `toggle_online`
[INFO] [stdout]   --> src/lohse.rs:64:12
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub fn toggle_online(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Client`
[INFO] [stdout]  --> src/client.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct Client {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/client.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn new(target: String, port: u16) -> Client {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `connect`
[INFO] [stdout]   --> src/client.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn connect(&mut self) {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `send`
[INFO] [stdout]   --> src/client.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn send(&mut self, content: String) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read`
[INFO] [stdout]   --> src/client.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 37 |     pub fn read(&mut self) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `receive`
[INFO] [stdout]  --> src/fane.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub fn receive(&mut self, _signal: &str) -> Result<(), Error>  {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `broadcast`
[INFO] [stdout]   --> src/fane.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn broadcast(&mut self, _signal: &str) -> Result<(), Error>  {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `turn_on`
[INFO] [stdout]   --> src/fane.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn turn_on(&mut self) -> Result<(), Error> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `turn_off`
[INFO] [stdout]   --> src/fane.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn turn_off(&mut self) -> Result<(), Error> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_status`
[INFO] [stdout]   --> src/fane.rs:42:12
[INFO] [stdout]    |
[INFO] [stdout] 42 |     pub fn read_status(&mut self) -> Result<(), Error> {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `receive`
[INFO] [stdout]  --> src/lohse.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub fn receive(&mut self, _signal: &str) -> Result<(), Error>  {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `transmit`
[INFO] [stdout]   --> src/lohse.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn transmit(&mut self, _signal: &str) -> Result<(), Error>  {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `turn_on`
[INFO] [stdout]   --> src/lohse.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn turn_on(&mut self) -> Result<(), Error> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `turn_off`
[INFO] [stdout]   --> src/lohse.rs:39:12
[INFO] [stdout]    |
[INFO] [stdout] 39 |     pub fn turn_off(&mut self) -> Result<(), Error> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `toggle_lamp`
[INFO] [stdout]   --> src/lohse.rs:48:12
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn toggle_lamp(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `toggle_online`
[INFO] [stdout]   --> src/lohse.rs:64:12
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub fn toggle_online(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Client`
[INFO] [stdout]  --> src/client.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct Client {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/client.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn new(target: String, port: u16) -> Client {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `connect`
[INFO] [stdout]   --> src/client.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn connect(&mut self) {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `send`
[INFO] [stdout]   --> src/client.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn send(&mut self, content: String) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read`
[INFO] [stdout]   --> src/client.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 37 |     pub fn read(&mut self) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.87s
[INFO] running `Command { std: "docker" "inspect" "b9356d04c334c6942cec2c34419a46696bab3ab4d2365bda5673a567bf8d4dd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9356d04c334c6942cec2c34419a46696bab3ab4d2365bda5673a567bf8d4dd9", kill_on_drop: false }`
[INFO] [stdout] b9356d04c334c6942cec2c34419a46696bab3ab4d2365bda5673a567bf8d4dd9