[INFO] fetching crate xcursor 0.3.2...
[INFO] checking xcursor-0.3.2 against beta for pr-78714
[INFO] extracting crate xcursor 0.3.2 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate xcursor 0.3.2 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 xcursor 0.3.2
[INFO] finished tweaking crates.io crate xcursor 0.3.2
[INFO] tweaked toml for crates.io crate xcursor 0.3.2 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a152a9df1cc4568cc2afce7fc4b41f394715dbacb56b80b4fd93e838759d198c
[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" "a152a9df1cc4568cc2afce7fc4b41f394715dbacb56b80b4fd93e838759d198c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a152a9df1cc4568cc2afce7fc4b41f394715dbacb56b80b4fd93e838759d198c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a152a9df1cc4568cc2afce7fc4b41f394715dbacb56b80b4fd93e838759d198c", kill_on_drop: false }`
[INFO] [stdout] a152a9df1cc4568cc2afce7fc4b41f394715dbacb56b80b4fd93e838759d198c
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f835740e2757299b57bf1eccf35ac0241f680f584fc0306fc5325b5a350fd6a3
[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" "f835740e2757299b57bf1eccf35ac0241f680f584fc0306fc5325b5a350fd6a3", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking nom v5.1.2
[INFO] [stderr]     Checking xcursor v0.3.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.04s
[INFO] running `Command { std: "docker" "inspect" "f835740e2757299b57bf1eccf35ac0241f680f584fc0306fc5325b5a350fd6a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f835740e2757299b57bf1eccf35ac0241f680f584fc0306fc5325b5a350fd6a3", kill_on_drop: false }`
[INFO] [stdout] f835740e2757299b57bf1eccf35ac0241f680f584fc0306fc5325b5a350fd6a3