[INFO] fetching crate pylon-sys 0.1.2...
[INFO] documenting pylon-sys-0.1.2 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate pylon-sys 0.1.2 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate pylon-sys 0.1.2 on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pylon-sys 0.1.2
[INFO] finished tweaking crates.io crate pylon-sys 0.1.2
[INFO] tweaked toml for crates.io crate pylon-sys 0.1.2 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2e3b6255379195d4beec6b7b38ea33fef51d79b6bcbf2f0f7c41219a9d3035a3
[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" "2e3b6255379195d4beec6b7b38ea33fef51d79b6bcbf2f0f7c41219a9d3035a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e3b6255379195d4beec6b7b38ea33fef51d79b6bcbf2f0f7c41219a9d3035a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e3b6255379195d4beec6b7b38ea33fef51d79b6bcbf2f0f7c41219a9d3035a3", kill_on_drop: false }`
[INFO] [stdout] 2e3b6255379195d4beec6b7b38ea33fef51d79b6bcbf2f0f7c41219a9d3035a3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "RUSTDOCFLAGS=--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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 718443d648644cad724fcc92f54b08e063da2dd0f3b7caa3134c926c8be9c4b1
[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" "718443d648644cad724fcc92f54b08e063da2dd0f3b7caa3134c926c8be9c4b1", kill_on_drop: false }`
[INFO] [stderr]    Compiling bindgen v0.50.1
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]    Compiling clang-sys v0.28.1
[INFO] [stderr]    Compiling pylon-sys v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: environment variable `PYLON_ROOT` not defined
[INFO] [stdout]  --> build.rs:7:22
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let pylon_root = env!("PYLON_ROOT");
[INFO] [stdout]   |                      ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `pylon-sys`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "718443d648644cad724fcc92f54b08e063da2dd0f3b7caa3134c926c8be9c4b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "718443d648644cad724fcc92f54b08e063da2dd0f3b7caa3134c926c8be9c4b1", kill_on_drop: false }`
[INFO] [stdout] 718443d648644cad724fcc92f54b08e063da2dd0f3b7caa3134c926c8be9c4b1