[INFO] cloning repository https://github.com/gftea/rust_async_runtime
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gftea/rust_async_runtime" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgftea%2Frust_async_runtime", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgftea%2Frust_async_runtime'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 14a21109c1b49ea9094c8025d3dbf776d4e1840d
[INFO] checking gftea/rust_async_runtime against master#8f359beca4e58bc3ae795a666301a8f47023044c for pr-121557
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgftea%2Frust_async_runtime" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gftea/rust_async_runtime on toolchain 8f359beca4e58bc3ae795a666301a8f47023044c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8f359beca4e58bc3ae795a666301a8f47023044c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gftea/rust_async_runtime
[INFO] finished tweaking git repo https://github.com/gftea/rust_async_runtime
[INFO] tweaked toml for git repo https://github.com/gftea/rust_async_runtime written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/gftea/rust_async_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" "+8f359beca4e58bc3ae795a666301a8f47023044c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+8f359beca4e58bc3ae795a666301a8f47023044c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 58da150f4a21e5d5e1fe001175e6fe711cb18e9d79bfce64edf5956b3b170731
[INFO] running `Command { std: "docker" "start" "-a" "58da150f4a21e5d5e1fe001175e6fe711cb18e9d79bfce64edf5956b3b170731", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "58da150f4a21e5d5e1fe001175e6fe711cb18e9d79bfce64edf5956b3b170731", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58da150f4a21e5d5e1fe001175e6fe711cb18e9d79bfce64edf5956b3b170731", kill_on_drop: false }`
[INFO] [stdout] 58da150f4a21e5d5e1fe001175e6fe711cb18e9d79bfce64edf5956b3b170731
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+8f359beca4e58bc3ae795a666301a8f47023044c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c4e9b319985efbe7b588dc37e7f514da07c1c1bc020024d23abe381ed654adf7
[INFO] running `Command { std: "docker" "start" "-a" "c4e9b319985efbe7b588dc37e7f514da07c1c1bc020024d23abe381ed654adf7", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]     Checking async_runtime v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `time::Duration`
[INFO] [stdout]  --> src/lib.rs:6:61
[INFO] [stdout]   |
[INFO] [stdout] 6 |     task::{Context, Poll, RawWaker, RawWakerVTable, Waker}, time::Duration,
[INFO] [stdout]   |                                                             ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `time::Duration`
[INFO] [stdout]  --> src/lib.rs:6:61
[INFO] [stdout]   |
[INFO] [stdout] 6 |     task::{Context, Poll, RawWaker, RawWakerVTable, Waker}, time::Duration,
[INFO] [stdout]   |                                                             ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.61s
[INFO] running `Command { std: "docker" "inspect" "c4e9b319985efbe7b588dc37e7f514da07c1c1bc020024d23abe381ed654adf7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4e9b319985efbe7b588dc37e7f514da07c1c1bc020024d23abe381ed654adf7", kill_on_drop: false }`
[INFO] [stdout] c4e9b319985efbe7b588dc37e7f514da07c1c1bc020024d23abe381ed654adf7