[INFO] cloning repository https://github.com/warouo/Async-Rust-Runtime
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/warouo/Async-Rust-Runtime" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwarouo%2FAsync-Rust-Runtime", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwarouo%2FAsync-Rust-Runtime'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 679a8fc2749aaa723aca7302f7afdad6c4c6d6c0
[INFO] checking warouo/Async-Rust-Runtime against try#df1b9bf194c9183fb7c0604484171064069ce232 for pr-149195-4
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwarouo%2FAsync-Rust-Runtime" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/warouo/Async-Rust-Runtime
[INFO] finished tweaking git repo https://github.com/warouo/Async-Rust-Runtime
[INFO] tweaked toml for git repo https://github.com/warouo/Async-Rust-Runtime written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/warouo/Async-Rust-Runtime on toolchain df1b9bf194c9183fb7c0604484171064069ce232
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+df1b9bf194c9183fb7c0604484171064069ce232" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/warouo/Async-Rust-Runtime 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" "+df1b9bf194c9183fb7c0604484171064069ce232" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking warouo/Async-Rust-Runtime against try#df1b9bf194c9183fb7c0604484171064069ce232 for pr-149195-4
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwarouo%2FAsync-Rust-Runtime" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/warouo/Async-Rust-Runtime
[INFO] finished tweaking git repo https://github.com/warouo/Async-Rust-Runtime
[INFO] tweaked toml for git repo https://github.com/warouo/Async-Rust-Runtime written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/warouo/Async-Rust-Runtime on toolchain df1b9bf194c9183fb7c0604484171064069ce232
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+df1b9bf194c9183fb7c0604484171064069ce232" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/warouo/Async-Rust-Runtime 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" "+df1b9bf194c9183fb7c0604484171064069ce232" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:29356a839a4d14451438f794ce8414e707d72405f44418718d724d22562fe786" "/opt/rustwide/cargo-home/bin/cargo" "+df1b9bf194c9183fb7c0604484171064069ce232" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f2fe6e7710bd20253bb495bd8c28d51f334011300a6ab5add15a47915126c207
[INFO] running `Command { std: "docker" "start" "-a" "f2fe6e7710bd20253bb495bd8c28d51f334011300a6ab5add15a47915126c207", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f2fe6e7710bd20253bb495bd8c28d51f334011300a6ab5add15a47915126c207", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2fe6e7710bd20253bb495bd8c28d51f334011300a6ab5add15a47915126c207", kill_on_drop: false }`
[INFO] [stdout] f2fe6e7710bd20253bb495bd8c28d51f334011300a6ab5add15a47915126c207
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--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@sha256:29356a839a4d14451438f794ce8414e707d72405f44418718d724d22562fe786" "/opt/rustwide/cargo-home/bin/cargo" "+df1b9bf194c9183fb7c0604484171064069ce232" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 659ebeb520ab50d45f664bfd81ad384752a359c60628f1889444a2700fc6e31b
[INFO] running `Command { std: "docker" "start" "-a" "659ebeb520ab50d45f664bfd81ad384752a359c60628f1889444a2700fc6e31b", kill_on_drop: false }`
[INFO] [stderr]     Checking runtime_implem v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `task`
[INFO] [stdout]   --> src/main.rs:31:26
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn pop(&mut self,task : Option<Task>) -> Option<Task> {
[INFO] [stdout]    |                          ^^^^ help: if this is intentional, prefix it with an underscore: `_task`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `future`, `waker`, and `remaning_cycle` are never read
[INFO] [stdout]   --> src/main.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct Task {
[INFO] [stdout]    |        ---- fields in this struct
[INFO] [stdout] 16 |     future : String,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 17 |     waker : WakerState,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 18 |     remaning_cycle : u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Task` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `task`
[INFO] [stdout]   --> src/main.rs:31:26
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn pop(&mut self,task : Option<Task>) -> Option<Task> {
[INFO] [stdout]    |                          ^^^^ help: if this is intentional, prefix it with an underscore: `_task`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `future`, `waker`, and `remaning_cycle` are never read
[INFO] [stdout]   --> src/main.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct Task {
[INFO] [stdout]    |        ---- fields in this struct
[INFO] [stdout] 16 |     future : String,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 17 |     waker : WakerState,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 18 |     remaning_cycle : u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Task` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.20s
[INFO] running `Command { std: "docker" "inspect" "659ebeb520ab50d45f664bfd81ad384752a359c60628f1889444a2700fc6e31b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "659ebeb520ab50d45f664bfd81ad384752a359c60628f1889444a2700fc6e31b", kill_on_drop: false }`
[INFO] [stdout] 659ebeb520ab50d45f664bfd81ad384752a359c60628f1889444a2700fc6e31b
