[INFO] fetching crate pylon-sys 0.1.3...
[INFO] testing pylon-sys-0.1.3 against master#432e145bd5a974c5b6f4dd9b352891bd7502b69d for pr-87041
[INFO] extracting crate pylon-sys 0.1.3 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate pylon-sys 0.1.3 on toolchain 432e145bd5a974c5b6f4dd9b352891bd7502b69d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pylon-sys 0.1.3
[INFO] finished tweaking crates.io crate pylon-sys 0.1.3
[INFO] tweaked toml for crates.io crate pylon-sys 0.1.3 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "fetch" "--manifest-path" "Cargo.toml", 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] 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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b2f2f21939f7415b6e8bf0d189a33d349eb27f1ee1136d2e9b88ffa7ffce3825
[INFO] running `Command { std: "docker" "start" "-a" "b2f2f21939f7415b6e8bf0d189a33d349eb27f1ee1136d2e9b88ffa7ffce3825", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b2f2f21939f7415b6e8bf0d189a33d349eb27f1ee1136d2e9b88ffa7ffce3825", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2f2f21939f7415b6e8bf0d189a33d349eb27f1ee1136d2e9b88ffa7ffce3825", kill_on_drop: false }`
[INFO] [stdout] b2f2f21939f7415b6e8bf0d189a33d349eb27f1ee1136d2e9b88ffa7ffce3825
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c6e4e6c696aeaeb66e20da922468aa624209059aa89e6ddcf8f1a943a02fad72
[INFO] running `Command { std: "docker" "start" "-a" "c6e4e6c696aeaeb66e20da922468aa624209059aa89e6ddcf8f1a943a02fad72", kill_on_drop: false }`
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling clang-sys v1.2.0
[INFO] [stderr]    Compiling libloading v0.7.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling env_logger v0.8.4
[INFO] [stderr]    Compiling bindgen v0.58.1
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling cexpr v0.4.0
[INFO] [stderr]    Compiling pylon-sys v0.1.3 (/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 the macro `env` (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" "c6e4e6c696aeaeb66e20da922468aa624209059aa89e6ddcf8f1a943a02fad72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6e4e6c696aeaeb66e20da922468aa624209059aa89e6ddcf8f1a943a02fad72", kill_on_drop: false }`
[INFO] [stdout] c6e4e6c696aeaeb66e20da922468aa624209059aa89e6ddcf8f1a943a02fad72