[INFO] fetching crate fft 0.4.0...
[INFO] checking fft-0.4.0 against beta for pr-78714
[INFO] extracting crate fft 0.4.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate fft 0.4.0 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 fft 0.4.0
[INFO] finished tweaking crates.io crate fft 0.4.0
[INFO] tweaked toml for crates.io crate fft 0.4.0 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] [stderr]     Blocking waiting for file lock on package cache
[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] 3ad7d6eb9f8ec924dc3d9e5104a8420297963ac1625abd6f9449d79f278e03d4
[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" "3ad7d6eb9f8ec924dc3d9e5104a8420297963ac1625abd6f9449d79f278e03d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3ad7d6eb9f8ec924dc3d9e5104a8420297963ac1625abd6f9449d79f278e03d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ad7d6eb9f8ec924dc3d9e5104a8420297963ac1625abd6f9449d79f278e03d4", kill_on_drop: false }`
[INFO] [stdout] 3ad7d6eb9f8ec924dc3d9e5104a8420297963ac1625abd6f9449d79f278e03d4
[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] d4dd2a9776fd9dfb207c2f86763c425d4d2b1e5df6a49619149bc6d42ba19303
[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" "d4dd2a9776fd9dfb207c2f86763c425d4d2b1e5df6a49619149bc6d42ba19303", kill_on_drop: false }`
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking dft v0.5.5
[INFO] [stderr]     Checking fft v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.24s
[INFO] running `Command { std: "docker" "inspect" "d4dd2a9776fd9dfb207c2f86763c425d4d2b1e5df6a49619149bc6d42ba19303", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4dd2a9776fd9dfb207c2f86763c425d4d2b1e5df6a49619149bc6d42ba19303", kill_on_drop: false }`
[INFO] [stdout] d4dd2a9776fd9dfb207c2f86763c425d4d2b1e5df6a49619149bc6d42ba19303