[INFO] fetching crate subplot 0.1.0...
[INFO] checking subplot-0.1.0 against try#3e22d1f9053c0fc87629b3c6d5d9567856368e5d for pr-78714
[INFO] extracting crate subplot 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate subplot 0.1.0 on toolchain 3e22d1f9053c0fc87629b3c6d5d9567856368e5d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate subplot 0.1.0
[INFO] finished tweaking crates.io crate subplot 0.1.0
[INFO] tweaked toml for crates.io crate subplot 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate subplot 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded structopt-derive v0.3.2
[INFO] [stderr]   Downloaded serde v1.0.101
[INFO] [stderr]   Downloaded pandoc v0.7.0
[INFO] [stderr]   Downloaded ryu v1.0.0
[INFO] [stderr]   Downloaded proc-macro2 v1.0.5
[INFO] [stderr]   Downloaded serde_derive v1.0.101
[INFO] [stderr]   Downloaded pandoc_ast v0.7.2
[INFO] [stderr]   Downloaded tempfile-fast v0.3.1
[INFO] [stderr]   Downloaded structopt v0.3.2
[INFO] [stderr]   Downloaded roadmap v0.1.0
[INFO] [stderr]   Downloaded bitflags v1.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "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] 00d077bd2b75182fbcc930cfc1fc2bf39193cadd3abd9209e88e699ca9cde9c9
[INFO] running `Command { std: "docker" "start" "-a" "00d077bd2b75182fbcc930cfc1fc2bf39193cadd3abd9209e88e699ca9cde9c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "00d077bd2b75182fbcc930cfc1fc2bf39193cadd3abd9209e88e699ca9cde9c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00d077bd2b75182fbcc930cfc1fc2bf39193cadd3abd9209e88e699ca9cde9c9", kill_on_drop: false }`
[INFO] [stdout] 00d077bd2b75182fbcc930cfc1fc2bf39193cadd3abd9209e88e699ca9cde9c9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f6c89c2dd9c2f57d7cf52a088eb78957f7b8f9f5c49ee691dc6bface733faf72
[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" "f6c89c2dd9c2f57d7cf52a088eb78957f7b8f9f5c49ee691dc6bface733faf72", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking getrandom v0.1.12
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]     Checking serde_yaml v0.8.11
[INFO] [stderr]     Checking pandoc v0.7.0
[INFO] [stderr]     Checking serde_json v1.0.41
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking tempfile-fast v0.3.1
[INFO] [stderr]    Compiling proc-macro-error v0.2.6
[INFO] [stderr]    Compiling structopt-derive v0.3.2
[INFO] [stderr]    Compiling serde_derive v1.0.101
[INFO] [stderr]     Checking structopt v0.3.2
[INFO] [stderr]     Checking roadmap v0.1.0
[INFO] [stderr]     Checking pandoc_ast v0.7.2
[INFO] [stderr]     Checking subplot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.14s
[INFO] running `Command { std: "docker" "inspect" "f6c89c2dd9c2f57d7cf52a088eb78957f7b8f9f5c49ee691dc6bface733faf72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6c89c2dd9c2f57d7cf52a088eb78957f7b8f9f5c49ee691dc6bface733faf72", kill_on_drop: false }`
[INFO] [stdout] f6c89c2dd9c2f57d7cf52a088eb78957f7b8f9f5c49ee691dc6bface733faf72