[INFO] fetching crate purrchance 0.4.1...
[INFO] checking purrchance-0.4.1 against beta for pr-78714
[INFO] extracting crate purrchance 0.4.1 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate purrchance 0.4.1 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 purrchance 0.4.1
[INFO] finished tweaking crates.io crate purrchance 0.4.1
[INFO] tweaked toml for crates.io crate purrchance 0.4.1 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate purrchance 0.4.1 already has a lockfile, it will not be regenerated
[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-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8a5b42430f047be6b8984a35466d60f45f433f89beb605f0c4fff4443a1f887b
[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" "8a5b42430f047be6b8984a35466d60f45f433f89beb605f0c4fff4443a1f887b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8a5b42430f047be6b8984a35466d60f45f433f89beb605f0c4fff4443a1f887b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a5b42430f047be6b8984a35466d60f45f433f89beb605f0c4fff4443a1f887b", kill_on_drop: false }`
[INFO] [stdout] 8a5b42430f047be6b8984a35466d60f45f433f89beb605f0c4fff4443a1f887b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "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] 540b8ed0aedd8d08f82e65bec85ed06170e390539f3d641108ca2bdb01407916
[INFO] running `Command { std: "docker" "start" "-a" "540b8ed0aedd8d08f82e65bec85ed06170e390539f3d641108ca2bdb01407916", kill_on_drop: false }`
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking nom v5.1.2
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking purrchance v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.67s
[INFO] running `Command { std: "docker" "inspect" "540b8ed0aedd8d08f82e65bec85ed06170e390539f3d641108ca2bdb01407916", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "540b8ed0aedd8d08f82e65bec85ed06170e390539f3d641108ca2bdb01407916", kill_on_drop: false }`
[INFO] [stdout] 540b8ed0aedd8d08f82e65bec85ed06170e390539f3d641108ca2bdb01407916