[INFO] fetching crate libelf-sys 0.0.6...
[INFO] checking libelf-sys-0.0.6 against try#3e22d1f9053c0fc87629b3c6d5d9567856368e5d for pr-78714
[INFO] extracting crate libelf-sys 0.0.6 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate libelf-sys 0.0.6 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 libelf-sys 0.0.6
[INFO] finished tweaking crates.io crate libelf-sys 0.0.6
[INFO] tweaked toml for crates.io crate libelf-sys 0.0.6 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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] 964f7cf6129db3112ea6b495cfb10b5319efbb830e77834e743001a12656459b
[INFO] running `Command { std: "docker" "start" "-a" "964f7cf6129db3112ea6b495cfb10b5319efbb830e77834e743001a12656459b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "964f7cf6129db3112ea6b495cfb10b5319efbb830e77834e743001a12656459b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "964f7cf6129db3112ea6b495cfb10b5319efbb830e77834e743001a12656459b", kill_on_drop: false }`
[INFO] [stdout] 964f7cf6129db3112ea6b495cfb10b5319efbb830e77834e743001a12656459b
[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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 82d7f5ed13e8211fcb607ff081a867c068b06133ac642bb70f977ecc2c82cd3d
[INFO] running `Command { std: "docker" "start" "-a" "82d7f5ed13e8211fcb607ff081a867c068b06133ac642bb70f977ecc2c82cd3d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libelf-sys v0.0.6 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0425]: cannot find function `target_supported` in crate `pkg_config`
[INFO] [stdout]  --> build.rs:4:25
[INFO] [stdout]   |
[INFO] [stdout] 4 |     assert!(pkg_config::target_supported());
[INFO] [stdout]   |                         ^^^^^^^^^^^^^^^^ not found in `pkg_config`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `libelf-sys`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "82d7f5ed13e8211fcb607ff081a867c068b06133ac642bb70f977ecc2c82cd3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82d7f5ed13e8211fcb607ff081a867c068b06133ac642bb70f977ecc2c82cd3d", kill_on_drop: false }`
[INFO] [stdout] 82d7f5ed13e8211fcb607ff081a867c068b06133ac642bb70f977ecc2c82cd3d