[INFO] cloning repository https://github.com/sulabhkothari/SkRustNetworking
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sulabhkothari/SkRustNetworking" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsulabhkothari%2FSkRustNetworking", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsulabhkothari%2FSkRustNetworking'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5a62731cd5b147c32b556057f8beed983f439956
[INFO] checking sulabhkothari/SkRustNetworking against try#987a165cfab916796a8315782b83ac460a651ce2 for pr-145262
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsulabhkothari%2FSkRustNetworking" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
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[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/sulabhkothari/SkRustNetworking
[INFO] finished tweaking git repo https://github.com/sulabhkothari/SkRustNetworking
[INFO] tweaked toml for git repo https://github.com/sulabhkothari/SkRustNetworking written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/sulabhkothari/SkRustNetworking on toolchain 987a165cfab916796a8315782b83ac460a651ce2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+987a165cfab916796a8315782b83ac460a651ce2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/sulabhkothari/SkRustNetworking already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+987a165cfab916796a8315782b83ac460a651ce2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+987a165cfab916796a8315782b83ac460a651ce2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ce8ce3a5d5b1aa640b3de4aba5f873baad1a65a9b7b222df1bb162c09e8b60cc
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[INFO] [stdout] 4c3e91b091ea76d72848a2753aef9af8fb94354f70534be6ba99b40505328ad4
[INFO] running `Command { std: "docker" "start" "-a" "4c3e91b091ea76d72848a2753aef9af8fb94354f70534be6ba99b40505328ad4", kill_on_drop: false }`
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[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.17
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[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking pin-project-lite v0.1.4
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[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]     Checking num_cpus v1.12.0
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[INFO] [stderr]    Compiling tokio-macros v0.2.5
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[INFO] [stderr]     Checking futures-executor v0.3.4
[INFO] [stderr]     Checking futures v0.3.4
[INFO] [stderr]     Checking SkRustNetworking v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::thread::Thread`
[INFO] [stdout]  --> src/async_await_basics.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::thread::Thread;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::mpsc`
[INFO] [stdout]  --> src/async_await_basics.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::sync::mpsc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures::join`
[INFO] [stdout]  --> src/async_await_basics.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use futures::join;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread::Thread`
[INFO] [stdout]  --> src/async_await_basics.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::thread::Thread;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::mpsc`
[INFO] [stdout]  --> src/async_await_basics.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::sync::mpsc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures::join`
[INFO] [stdout]  --> src/async_await_basics.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use futures::join;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `async_await_basics_main` is never used
[INFO] [stdout]   --> src/async_await_basics.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn async_await_basics_main() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Song` is never constructed
[INFO] [stdout]   --> src/async_await_basics.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | struct Song {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/async_await_basics.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 52 | impl Song {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] 53 |     fn new() -> Song {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `learn_song` is never used
[INFO] [stdout]   --> src/async_await_basics.rs:58:10
[INFO] [stdout]    |
[INFO] [stdout] 58 | async fn learn_song() -> Song {
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sing_song` is never used
[INFO] [stdout]   --> src/async_await_basics.rs:66:10
[INFO] [stdout]    |
[INFO] [stdout] 66 | async fn sing_song(song: Song) {
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `dance` is never used
[INFO] [stdout]   --> src/async_await_basics.rs:72:10
[INFO] [stdout]    |
[INFO] [stdout] 72 | async fn dance() {
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `learn_and_sing` is never used
[INFO] [stdout]   --> src/async_await_basics.rs:76:10
[INFO] [stdout]    |
[INFO] [stdout] 76 | async fn learn_and_sing() {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `async_main` is never used
[INFO] [stdout]   --> src/async_await_basics.rs:81:10
[INFO] [stdout]    |
[INFO] [stdout] 81 | async fn async_main() {
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Executor` is never constructed
[INFO] [stdout]    --> src/async_await_basics.rs:163:8
[INFO] [stdout]     |
[INFO] [stdout] 163 | struct Executor {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Spawner` is never constructed
[INFO] [stdout]    --> src/async_await_basics.rs:169:8
[INFO] [stdout]     |
[INFO] [stdout] 169 | struct Spawner {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Task` is never constructed
[INFO] [stdout]    --> src/async_await_basics.rs:174:8
[INFO] [stdout]     |
[INFO] [stdout] 174 | struct Task {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `new_executor_and_spawner` is never used
[INFO] [stdout]    --> src/async_await_basics.rs:188:4
[INFO] [stdout]     |
[INFO] [stdout] 188 | fn new_executor_and_spawner() -> (Executor, Spawner) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `spawn` is never used
[INFO] [stdout]    --> src/async_await_basics.rs:198:8
[INFO] [stdout]     |
[INFO] [stdout] 197 | impl Spawner {
[INFO] [stdout]     | ------------ method in this implementation
[INFO] [stdout] 198 |     fn spawn(&self, future: impl Future<Output=()> + 'static + Send) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `run` is never used
[INFO] [stdout]    --> src/async_await_basics.rs:224:8
[INFO] [stdout]     |
[INFO] [stdout] 223 | impl Executor {
[INFO] [stdout]     | ------------- method in this implementation
[INFO] [stdout] 224 |     fn run(&self) {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `SkRustNetworking` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = help: convert the identifier to snake case: `sk_rust_networking`
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `async_await_basics_main` is never used
[INFO] [stdout]   --> src/async_await_basics.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn async_await_basics_main() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Song` is never constructed
[INFO] [stdout]   --> src/async_await_basics.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | struct Song {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/async_await_basics.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 52 | impl Song {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] 53 |     fn new() -> Song {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `learn_song` is never used
[INFO] [stdout]   --> src/async_await_basics.rs:58:10
[INFO] [stdout]    |
[INFO] [stdout] 58 | async fn learn_song() -> Song {
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sing_song` is never used
[INFO] [stdout]   --> src/async_await_basics.rs:66:10
[INFO] [stdout]    |
[INFO] [stdout] 66 | async fn sing_song(song: Song) {
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `dance` is never used
[INFO] [stdout]   --> src/async_await_basics.rs:72:10
[INFO] [stdout]    |
[INFO] [stdout] 72 | async fn dance() {
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `learn_and_sing` is never used
[INFO] [stdout]   --> src/async_await_basics.rs:76:10
[INFO] [stdout]    |
[INFO] [stdout] 76 | async fn learn_and_sing() {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `async_main` is never used
[INFO] [stdout]   --> src/async_await_basics.rs:81:10
[INFO] [stdout]    |
[INFO] [stdout] 81 | async fn async_main() {
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Executor` is never constructed
[INFO] [stdout]    --> src/async_await_basics.rs:163:8
[INFO] [stdout]     |
[INFO] [stdout] 163 | struct Executor {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Spawner` is never constructed
[INFO] [stdout]    --> src/async_await_basics.rs:169:8
[INFO] [stdout]     |
[INFO] [stdout] 169 | struct Spawner {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Task` is never constructed
[INFO] [stdout]    --> src/async_await_basics.rs:174:8
[INFO] [stdout]     |
[INFO] [stdout] 174 | struct Task {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `new_executor_and_spawner` is never used
[INFO] [stdout]    --> src/async_await_basics.rs:188:4
[INFO] [stdout]     |
[INFO] [stdout] 188 | fn new_executor_and_spawner() -> (Executor, Spawner) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `spawn` is never used
[INFO] [stdout]    --> src/async_await_basics.rs:198:8
[INFO] [stdout]     |
[INFO] [stdout] 197 | impl Spawner {
[INFO] [stdout]     | ------------ method in this implementation
[INFO] [stdout] 198 |     fn spawn(&self, future: impl Future<Output=()> + 'static + Send) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `run` is never used
[INFO] [stdout]    --> src/async_await_basics.rs:224:8
[INFO] [stdout]     |
[INFO] [stdout] 223 | impl Executor {
[INFO] [stdout]     | ------------- method in this implementation
[INFO] [stdout] 224 |     fn run(&self) {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::net::TcpStream`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use tokio::net::TcpStream;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::io::AsyncWrite`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use tokio::io::AsyncWrite;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::net::TcpStream`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use tokio::net::TcpStream;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::io::AsyncWrite`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use tokio::io::AsyncWrite;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::prelude`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use tokio::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::prelude`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use tokio::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::prelude`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use tokio::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::prelude`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use tokio::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.02s
[INFO] running `Command { std: "docker" "inspect" "4c3e91b091ea76d72848a2753aef9af8fb94354f70534be6ba99b40505328ad4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c3e91b091ea76d72848a2753aef9af8fb94354f70534be6ba99b40505328ad4", kill_on_drop: false }`
[INFO] [stdout] 4c3e91b091ea76d72848a2753aef9af8fb94354f70534be6ba99b40505328ad4