[INFO] cloning repository https://github.com/DR-BoneZ/knowledge-engine-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/DR-BoneZ/knowledge-engine-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDR-BoneZ%2Fknowledge-engine-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDR-BoneZ%2Fknowledge-engine-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] af98fa45ed6061e5332bf155b2b7c5266e883aab
[INFO] checking DR-BoneZ/knowledge-engine-rs against master#c9228570668803e3e6402770d55f23a12c9ae686 for pr-79472
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDR-BoneZ%2Fknowledge-engine-rs" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/DR-BoneZ/knowledge-engine-rs on toolchain c9228570668803e3e6402770d55f23a12c9ae686
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/DR-BoneZ/knowledge-engine-rs
[INFO] finished tweaking git repo https://github.com/DR-BoneZ/knowledge-engine-rs
[INFO] tweaked toml for git repo https://github.com/DR-BoneZ/knowledge-engine-rs written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/DR-BoneZ/knowledge-engine-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2cb1f13b51c4403c273af4ec7fef37facee4c41cde3814c7373541331841251c
[INFO] running `Command { std: "docker" "start" "-a" "2cb1f13b51c4403c273af4ec7fef37facee4c41cde3814c7373541331841251c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2cb1f13b51c4403c273af4ec7fef37facee4c41cde3814c7373541331841251c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2cb1f13b51c4403c273af4ec7fef37facee4c41cde3814c7373541331841251c", kill_on_drop: false }`
[INFO] [stdout] 2cb1f13b51c4403c273af4ec7fef37facee4c41cde3814c7373541331841251c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 830abbbe810cec1918f64a9634ab5f9b5072bede6b1c724c33fbccd74c1ba8fb
[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" "830abbbe810cec1918f64a9634ab5f9b5072bede6b1c724c33fbccd74c1ba8fb", kill_on_drop: false }`
[INFO] [stderr]    Compiling ucd-trie v0.1.1
[INFO] [stderr]     Checking half v1.3.0
[INFO] [stderr]    Compiling clingo-sys v0.4.1
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]     Checking backtrace-sys v0.1.28
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking Inflector v0.11.4
[INFO] [stderr]     Checking backtrace v0.3.15
[INFO] [stderr]     Checking serde_cbor v0.9.0
[INFO] [stderr]    Compiling pest v2.1.1
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]    Compiling syn v0.15.32
[INFO] [stderr]    Compiling pest_meta v2.1.1
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling pest_generator v2.1.0
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling serde_derive v1.0.90
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]     Checking failure v0.1.5
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "830abbbe810cec1918f64a9634ab5f9b5072bede6b1c724c33fbccd74c1ba8fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "830abbbe810cec1918f64a9634ab5f9b5072bede6b1c724c33fbccd74c1ba8fb", kill_on_drop: false }`
[INFO] [stdout] 830abbbe810cec1918f64a9634ab5f9b5072bede6b1c724c33fbccd74c1ba8fb