[INFO] fetching crate slide 0.0.1...
[INFO] testing slide-0.0.1 against 1.49.0 for beta-1.50-1
[INFO] extracting crate slide 0.0.1 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate slide 0.0.1 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate slide 0.0.1
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate slide 0.0.1
[INFO] tweaked toml for crates.io crate slide 0.0.1 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate crates.io crate slide 0.0.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 76abec946b33fe54b2006c2da3a219ee210b0295f52aa7b9fa01dfb6a210169b
[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" "76abec946b33fe54b2006c2da3a219ee210b0295f52aa7b9fa01dfb6a210169b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "76abec946b33fe54b2006c2da3a219ee210b0295f52aa7b9fa01dfb6a210169b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76abec946b33fe54b2006c2da3a219ee210b0295f52aa7b9fa01dfb6a210169b", kill_on_drop: false }`
[INFO] [stdout] 76abec946b33fe54b2006c2da3a219ee210b0295f52aa7b9fa01dfb6a210169b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6faef9a74b2e3fe04f974743e96c0032c6f6bf3c071cadabc1a996ddcb69e8b1
[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" "6faef9a74b2e3fe04f974743e96c0032c6f6bf3c071cadabc1a996ddcb69e8b1", kill_on_drop: false }`
[INFO] [stderr]    Compiling gmp-mpfr-sys v1.2.4
[INFO] [stderr]    Compiling rug v1.9.0
[INFO] [stderr]    Compiling az v1.0.0
[INFO] [stderr]    Compiling yansi-term v0.1.2
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling clap v2.33.1
[INFO] [stderr]    Compiling annotate-snippets v0.8.0
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "6faef9a74b2e3fe04f974743e96c0032c6f6bf3c071cadabc1a996ddcb69e8b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6faef9a74b2e3fe04f974743e96c0032c6f6bf3c071cadabc1a996ddcb69e8b1", kill_on_drop: false }`
[INFO] [stdout] 6faef9a74b2e3fe04f974743e96c0032c6f6bf3c071cadabc1a996ddcb69e8b1