[INFO] fetching crate uwc 1.0.4...
[INFO] checking uwc-1.0.4 against beta for pr-78714
[INFO] extracting crate uwc 1.0.4 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate uwc 1.0.4 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate uwc 1.0.4
[INFO] finished tweaking crates.io crate uwc 1.0.4
[INFO] tweaked toml for crates.io crate uwc 1.0.4 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate uwc 1.0.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 869dcf254d4760bb87e8eee6f0fff05c29b5f12a3f6f5f2a0dfb39242f988e60
[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" "869dcf254d4760bb87e8eee6f0fff05c29b5f12a3f6f5f2a0dfb39242f988e60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "869dcf254d4760bb87e8eee6f0fff05c29b5f12a3f6f5f2a0dfb39242f988e60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "869dcf254d4760bb87e8eee6f0fff05c29b5f12a3f6f5f2a0dfb39242f988e60", kill_on_drop: false }`
[INFO] [stdout] 869dcf254d4760bb87e8eee6f0fff05c29b5f12a3f6f5f2a0dfb39242f988e60
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7a5d152b4fc475d9111a9f579c5a6bb8e2ff67b83f2650f379ba162f22a21ee1
[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" "7a5d152b4fc475d9111a9f579c5a6bb8e2ff67b83f2650f379ba162f22a21ee1", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.46
[INFO] [stderr]     Checking humantime v2.0.1
[INFO] [stderr]     Checking crossbeam-utils v0.8.0
[INFO] [stderr]     Checking tabwriter v1.2.1
[INFO] [stderr]     Checking backtrace v0.3.53
[INFO] [stderr]     Checking env_logger v0.8.1
[INFO] [stderr]     Checking crossbeam-epoch v0.9.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.0
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking rayon-core v1.9.0
[INFO] [stderr]     Checking rayon v1.5.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling structopt-derive v0.4.13
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking structopt v0.3.20
[INFO] [stderr]     Checking uwc v1.0.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.69s
[INFO] running `Command { std: "docker" "inspect" "7a5d152b4fc475d9111a9f579c5a6bb8e2ff67b83f2650f379ba162f22a21ee1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a5d152b4fc475d9111a9f579c5a6bb8e2ff67b83f2650f379ba162f22a21ee1", kill_on_drop: false }`
[INFO] [stdout] 7a5d152b4fc475d9111a9f579c5a6bb8e2ff67b83f2650f379ba162f22a21ee1