[INFO] cloning repository https://github.com/pleasewhy/SimpleAsyncTcp
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pleasewhy/SimpleAsyncTcp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpleasewhy%2FSimpleAsyncTcp", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpleasewhy%2FSimpleAsyncTcp'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 239e5d7ac546e34db673289b2ff1ff7bc757fc99
[INFO] checking pleasewhy/SimpleAsyncTcp/239e5d7ac546e34db673289b2ff1ff7bc757fc99 against da86f4d0726be475afbbffe40cb2f65741c51ad3 for pr-159877
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpleasewhy%2FSimpleAsyncTcp" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/pleasewhy/SimpleAsyncTcp
[INFO] finished tweaking git repo https://github.com/pleasewhy/SimpleAsyncTcp
[INFO] tweaked toml for git repo https://github.com/pleasewhy/SimpleAsyncTcp written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/pleasewhy/SimpleAsyncTcp on toolchain da86f4d0726be475afbbffe40cb2f65741c51ad3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+da86f4d0726be475afbbffe40cb2f65741c51ad3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/pleasewhy/SimpleAsyncTcp 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" "+da86f4d0726be475afbbffe40cb2f65741c51ad3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Updating git repository `https://github.com/sujayakar/unicycle`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded futures-preview v0.3.0-alpha.17
[INFO] [stderr]   Downloaded futures-core-preview v0.3.0-alpha.17
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[INFO] [stderr]   Downloaded bit-iter v0.1.6
[INFO] [stderr]   Downloaded uniset v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:1fa6594d87c8fa7b311925a7a77a16f539833322d9dfba4ce891f211db2f90b1" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 239f053bde2efc6059c123f21da9acf0c1b83394b569519634ff4a46fa1402fe
[INFO] running `Command { std: "docker" "start" "239f053bde2efc6059c123f21da9acf0c1b83394b569519634ff4a46fa1402fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "239f053bde2efc6059c123f21da9acf0c1b83394b569519634ff4a46fa1402fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "239f053bde2efc6059c123f21da9acf0c1b83394b569519634ff4a46fa1402fe" "/opt/rustwide/cargo-home/bin/cargo" "+da86f4d0726be475afbbffe40cb2f65741c51ad3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "239f053bde2efc6059c123f21da9acf0c1b83394b569519634ff4a46fa1402fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "239f053bde2efc6059c123f21da9acf0c1b83394b569519634ff4a46fa1402fe" "/opt/rustwide/cargo-home/bin/cargo" "+da86f4d0726be475afbbffe40cb2f65741c51ad3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.106
[INFO] [stderr]     Checking slab v0.4.5
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
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[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking unicycle v0.6.3 (https://github.com/sujayakar/unicycle?rev=44c0e8f62cb9355cfd35ef5309abf10a4c388b62#44c0e8f6)
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[INFO] [stderr]     Checking futures-executor-preview v0.3.0-alpha.17
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[INFO] [stderr]    Compiling tokio-macros v0.2.6
[INFO] [stderr]     Checking tokio v0.2.25
[INFO] [stderr]     Checking SimpleAsyncTcp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `lazy_static::__Deref`
[INFO] [stdout]  --> src/net/tcplisten.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use lazy_static::__Deref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ErrorKind`
[INFO] [stdout]  --> src/net/tcplisten.rs:8:21
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::io::{self, ErrorKind};
[INFO] [stdout]   |                     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Waker`
[INFO] [stdout]   --> src/net/mod.rs:16:32
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std::task::{Context, Poll, Waker};
[INFO] [stdout]    |                                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `lazy_static::__Deref`
[INFO] [stdout]  --> src/net/tcplisten.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use lazy_static::__Deref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ErrorKind`
[INFO] [stdout]  --> src/net/tcplisten.rs:8:21
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::io::{self, ErrorKind};
[INFO] [stdout]   |                     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Waker`
[INFO] [stdout]   --> src/net/mod.rs:16:32
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std::task::{Context, Poll, Waker};
[INFO] [stdout]    |                                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `child`
[INFO] [stdout]   --> tests/basic_tests.rs:15:13
[INFO] [stdout]    |
[INFO] [stdout] 15 |         let child = cmd.spawn().expect(&format!("run server failed.",));
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_child`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> tests/basic_tests.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |     for i in 0..5 {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `res`
[INFO] [stdout]   --> src/net/mod.rs:88:17
[INFO] [stdout]    |
[INFO] [stdout] 88 |             let res = poll.poll(&mut es, Some(Duration::from_millis(500)));
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_res`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `register_waker` is never used
[INFO] [stdout]   --> src/net/mod.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 61 | impl EventState {
[INFO] [stdout]    | --------------- method in this implementation
[INFO] [stdout] 62 |     fn register_waker(&self) {}
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TimerFuture` is never constructed
[INFO] [stdout]   --> src/timer_future.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct TimerFuture {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SharedState` is never constructed
[INFO] [stdout]   --> src/timer_future.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct SharedState {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: feature `get_mut_unchecked` is declared but not used
[INFO] [stdout]  --> src/main.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(get_mut_unchecked)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_features)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `res`
[INFO] [stdout]   --> src/net/mod.rs:88:17
[INFO] [stdout]    |
[INFO] [stdout] 88 |             let res = poll.poll(&mut es, Some(Duration::from_millis(500)));
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_res`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `register_waker` is never used
[INFO] [stdout]   --> src/net/mod.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 61 | impl EventState {
[INFO] [stdout]    | --------------- method in this implementation
[INFO] [stdout] 62 |     fn register_waker(&self) {}
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TimerFuture` is never constructed
[INFO] [stdout]   --> src/timer_future.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct TimerFuture {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SharedState` is never constructed
[INFO] [stdout]   --> src/timer_future.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct SharedState {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: feature `get_mut_unchecked` is declared but not used
[INFO] [stdout]  --> src/main.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(get_mut_unchecked)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_features)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 19.45s
[INFO] running `Command { std: "docker" "inspect" "239f053bde2efc6059c123f21da9acf0c1b83394b569519634ff4a46fa1402fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "239f053bde2efc6059c123f21da9acf0c1b83394b569519634ff4a46fa1402fe", kill_on_drop: false }`
[INFO] [stdout] 239f053bde2efc6059c123f21da9acf0c1b83394b569519634ff4a46fa1402fe
