[INFO] cloning repository https://github.com/zhangyunpeng/RUST_learn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zhangyunpeng/RUST_learn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzhangyunpeng%2FRUST_learn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzhangyunpeng%2FRUST_learn'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 11df870808d8698dfee434a82cac99916d6f38b8
[INFO] checking zhangyunpeng/RUST_learn against c397dae808f70caebab1fc4e11b3edf7e59f58c7 for pr-158759-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzhangyunpeng%2FRUST_learn" "/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/zhangyunpeng/RUST_learn
[INFO] finished tweaking git repo https://github.com/zhangyunpeng/RUST_learn
[INFO] tweaked toml for git repo https://github.com/zhangyunpeng/RUST_learn written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/zhangyunpeng/RUST_learn on toolchain c397dae808f70caebab1fc4e11b3edf7e59f58c7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c397dae808f70caebab1fc4e11b3edf7e59f58c7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/zhangyunpeng/RUST_learn 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" "+c397dae808f70caebab1fc4e11b3edf7e59f58c7" "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-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@sha256:3d5ced03c013a94a2f102a4510f48a6e9184255caf5fd8244f58017bde7f5210" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 3bde097d9c96b55365ab7b25ed6b740c3091dd020b12ce038275441fe29304df
[INFO] running `Command { std: "docker" "start" "3bde097d9c96b55365ab7b25ed6b740c3091dd020b12ce038275441fe29304df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3bde097d9c96b55365ab7b25ed6b740c3091dd020b12ce038275441fe29304df", 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" "3bde097d9c96b55365ab7b25ed6b740c3091dd020b12ce038275441fe29304df" "/opt/rustwide/cargo-home/bin/cargo" "+c397dae808f70caebab1fc4e11b3edf7e59f58c7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3bde097d9c96b55365ab7b25ed6b740c3091dd020b12ce038275441fe29304df", 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" "3bde097d9c96b55365ab7b25ed6b740c3091dd020b12ce038275441fe29304df" "/opt/rustwide/cargo-home/bin/cargo" "+c397dae808f70caebab1fc4e11b3edf7e59f58c7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] [stdout] warning: unused import: `Bytes`
[INFO] [stdout]  --> examples/tokio_framing.rs:1:18
[INFO] [stdout]   |
[INFO] [stdout] 1 | use bytes::{Buf, Bytes, BytesMut};
[INFO] [stdout]   |                  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> examples/tokio_framing.rs:128:39
[INFO] [stdout]     |
[INFO] [stdout] 128 |     async fn write_decimal(&mut self, mut val: u64) -> io::Result<()> {
[INFO] [stdout]     |                                       ----^^^
[INFO] [stdout]     |                                       |
[INFO] [stdout]     |                                       help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::OnceLock`
[INFO] [stdout]  --> examples/sync_async_main_async.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::sync::OnceLock;
[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: `tokio::runtime::Runtime`
[INFO] [stdout]  --> examples/sync_async_main_async.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use tokio::runtime::Runtime;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/tokio_stream.rs:78:13
[INFO] [stdout]    |
[INFO] [stdout] 78 |     fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Delay` is never constructed
[INFO] [stdout]   --> examples/tokio_stream.rs:72:8
[INFO] [stdout]    |
[INFO] [stdout] 72 | struct Delay {
[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 `Interval` is never constructed
[INFO] [stdout]   --> examples/tokio_stream.rs:88:8
[INFO] [stdout]    |
[INFO] [stdout] 88 | struct Interval {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> examples/tokio_stream.rs:94:8
[INFO] [stdout]    |
[INFO] [stdout] 93 | impl Interval {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 94 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3m 25s
[INFO] running `Command { std: "docker" "inspect" "3bde097d9c96b55365ab7b25ed6b740c3091dd020b12ce038275441fe29304df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3bde097d9c96b55365ab7b25ed6b740c3091dd020b12ce038275441fe29304df", kill_on_drop: false }`
[INFO] [stdout] 3bde097d9c96b55365ab7b25ed6b740c3091dd020b12ce038275441fe29304df
