[INFO] crate gmp-mpfr-sys 1.3.1 is already in cache
[INFO] testing gmp-mpfr-sys-1.3.1 against beta-2020-07-24 for beta-1.46-1
[INFO] extracting crate gmp-mpfr-sys 1.3.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate gmp-mpfr-sys 1.3.1 on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate gmp-mpfr-sys 1.3.1
[INFO] finished tweaking crates.io crate gmp-mpfr-sys 1.3.1
[INFO] tweaked toml for crates.io crate gmp-mpfr-sys 1.3.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 426c64b26c9d51dd0693de9c1635f6633b85ffad99629891f3f9fcbc47e7d4ba
[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" "426c64b26c9d51dd0693de9c1635f6633b85ffad99629891f3f9fcbc47e7d4ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "426c64b26c9d51dd0693de9c1635f6633b85ffad99629891f3f9fcbc47e7d4ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "426c64b26c9d51dd0693de9c1635f6633b85ffad99629891f3f9fcbc47e7d4ba", kill_on_drop: false }`
[INFO] [stdout] 426c64b26c9d51dd0693de9c1635f6633b85ffad99629891f3f9fcbc47e7d4ba
[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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 994809bc323038a0c4d87d69515c06c1bebe4c14b7e21ab4199fd51284fd8dd9
[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" "994809bc323038a0c4d87d69515c06c1bebe4c14b7e21ab4199fd51284fd8dd9", kill_on_drop: false }`
[INFO] [stderr]    Compiling gmp-mpfr-sys v1.3.1 (/opt/rustwide/workdir)
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "994809bc323038a0c4d87d69515c06c1bebe4c14b7e21ab4199fd51284fd8dd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "994809bc323038a0c4d87d69515c06c1bebe4c14b7e21ab4199fd51284fd8dd9", kill_on_drop: false }`
[INFO] [stdout] 994809bc323038a0c4d87d69515c06c1bebe4c14b7e21ab4199fd51284fd8dd9