[INFO] fetching crate nostd_async 0.6.1...
[INFO] checking nostd_async-0.6.1 against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] extracting crate nostd_async 0.6.1 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate nostd_async 0.6.1 on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate nostd_async 0.6.1
[INFO] finished tweaking crates.io crate nostd_async 0.6.1
[INFO] tweaked toml for crates.io crate nostd_async 0.6.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate nostd_async 0.6.1 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded futures-micro v0.5.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 48ec96fb9d914f90557749d87ef1f0b7f795b54109174acd5f45ebca85ffcbe4
[INFO] running `Command { std: "docker" "start" "-a" "48ec96fb9d914f90557749d87ef1f0b7f795b54109174acd5f45ebca85ffcbe4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "48ec96fb9d914f90557749d87ef1f0b7f795b54109174acd5f45ebca85ffcbe4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48ec96fb9d914f90557749d87ef1f0b7f795b54109174acd5f45ebca85ffcbe4", kill_on_drop: false }`
[INFO] [stdout] 48ec96fb9d914f90557749d87ef1f0b7f795b54109174acd5f45ebca85ffcbe4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f8d8d3be3c986a22a05239d9301b01a8928820a6f2a526bb62c7b0789d4a0cf0
[INFO] running `Command { std: "docker" "start" "-a" "f8d8d3be3c986a22a05239d9301b01a8928820a6f2a526bb62c7b0789d4a0cf0", kill_on_drop: false }`
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]     Checking futures-micro v0.5.0
[INFO] [stderr]     Checking nostd_async v0.6.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `insert_front` is never used
[INFO] [stdout]   --> src/linked_list.rs:98:8
[INFO] [stdout]    |
[INFO] [stdout] 81 | pub trait LinkedListItem: Sized {
[INFO] [stdout]    |           -------------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 98 |     fn insert_front(&self, cs: &CriticalSection) {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `Command { std: "docker" "inspect" "f8d8d3be3c986a22a05239d9301b01a8928820a6f2a526bb62c7b0789d4a0cf0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8d8d3be3c986a22a05239d9301b01a8928820a6f2a526bb62c7b0789d4a0cf0", kill_on_drop: false }`
[INFO] [stdout] f8d8d3be3c986a22a05239d9301b01a8928820a6f2a526bb62c7b0789d4a0cf0