[INFO] fetching crate kvm-ioctls 0.5.0...
[INFO] checking kvm-ioctls-0.5.0 against try#9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c for pr-79472
[INFO] extracting crate kvm-ioctls 0.5.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate kvm-ioctls 0.5.0 on toolchain 9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-7/source/.cargo/config
[INFO] started tweaking crates.io crate kvm-ioctls 0.5.0
[INFO] finished tweaking crates.io crate kvm-ioctls 0.5.0
[INFO] tweaked toml for crates.io crate kvm-ioctls 0.5.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded kvm-bindings v0.3.0
[INFO] [stderr]   Downloaded vmm-sys-util v0.7.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 88ed43ff172bca0ffd132fc823b1b96572de59e8b009e6f20a150fe1c3bcd87a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "88ed43ff172bca0ffd132fc823b1b96572de59e8b009e6f20a150fe1c3bcd87a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "88ed43ff172bca0ffd132fc823b1b96572de59e8b009e6f20a150fe1c3bcd87a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88ed43ff172bca0ffd132fc823b1b96572de59e8b009e6f20a150fe1c3bcd87a", kill_on_drop: false }`
[INFO] [stdout] 88ed43ff172bca0ffd132fc823b1b96572de59e8b009e6f20a150fe1c3bcd87a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5dfb09328bafd9c44e50ca92d9bf73c6920eb3a6f3a0c5cc59c7da18e7f3cc6a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5dfb09328bafd9c44e50ca92d9bf73c6920eb3a6f3a0c5cc59c7da18e7f3cc6a", kill_on_drop: false }`
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking vmm-sys-util v0.7.0
[INFO] [stderr]     Checking kvm-bindings v0.3.0
[INFO] [stderr]     Checking kvm-ioctls v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]     --> src/ioctls/vm.rs:1329:9
[INFO] [stdout]      |
[INFO] [stdout] 1329 |         unsafe {
[INFO] [stdout]      |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.62s
[INFO] running `Command { std: "docker" "inspect" "5dfb09328bafd9c44e50ca92d9bf73c6920eb3a6f3a0c5cc59c7da18e7f3cc6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5dfb09328bafd9c44e50ca92d9bf73c6920eb3a6f3a0c5cc59c7da18e7f3cc6a", kill_on_drop: false }`
[INFO] [stdout] 5dfb09328bafd9c44e50ca92d9bf73c6920eb3a6f3a0c5cc59c7da18e7f3cc6a