[INFO] fetching crate cfg-expr 0.5.0...
[INFO] checking cfg-expr-0.5.0 against master#b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18 for pr-79470
[INFO] extracting crate cfg-expr 0.5.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate cfg-expr 0.5.0 on toolchain b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cfg-expr 0.5.0
[INFO] finished tweaking crates.io crate cfg-expr 0.5.0
[INFO] tweaked toml for crates.io crate cfg-expr 0.5.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate cfg-expr 0.5.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "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] 8c4342e6358e33472b1f060d6b6ea35186bff6bdf0dab0e5939aea3ff90d6f05
[INFO] running `Command { std: "docker" "start" "-a" "8c4342e6358e33472b1f060d6b6ea35186bff6bdf0dab0e5939aea3ff90d6f05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8c4342e6358e33472b1f060d6b6ea35186bff6bdf0dab0e5939aea3ff90d6f05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c4342e6358e33472b1f060d6b6ea35186bff6bdf0dab0e5939aea3ff90d6f05", kill_on_drop: false }`
[INFO] [stdout] 8c4342e6358e33472b1f060d6b6ea35186bff6bdf0dab0e5939aea3ff90d6f05
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 4175279ab4a19dca2ec282008d6ff5fd4388b0380bb78c41a3915bdf36f9fc97
[INFO] running `Command { std: "docker" "start" "-a" "4175279ab4a19dca2ec282008d6ff5fd4388b0380bb78c41a3915bdf36f9fc97", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking smallvec v1.4.2
[INFO] [stderr]     Checking cfg-expr v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.09s
[INFO] running `Command { std: "docker" "inspect" "4175279ab4a19dca2ec282008d6ff5fd4388b0380bb78c41a3915bdf36f9fc97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4175279ab4a19dca2ec282008d6ff5fd4388b0380bb78c41a3915bdf36f9fc97", kill_on_drop: false }`
[INFO] [stdout] 4175279ab4a19dca2ec282008d6ff5fd4388b0380bb78c41a3915bdf36f9fc97