[INFO] fetching crate libdw 0.0.6...
[INFO] testing libdw-0.0.6 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate libdw 0.0.6 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate libdw 0.0.6 on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate libdw 0.0.6
[INFO] finished tweaking crates.io crate libdw 0.0.6
[INFO] tweaked toml for crates.io crate libdw 0.0.6 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 61c1bef9ed02492724bae114f191e3daeca715098fafd06d9f2545375d2428b8
[INFO] running `"docker" "start" "-a" "61c1bef9ed02492724bae114f191e3daeca715098fafd06d9f2545375d2428b8"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libelf-sys v0.0.6
[INFO] [stderr]    Compiling libdw-sys v0.0.6
[INFO] [stderr] error[E0425]: cannot find function `target_supported` in crate `pkg_config`
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libdw-sys-0.0.6/build.rs:4:25
[INFO] [stderr]   |
[INFO] [stderr] 4 |     assert!(pkg_config::target_supported());
[INFO] [stderr]   |                         ^^^^^^^^^^^^^^^^ not found in `pkg_config`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0425`.
[INFO] [stderr] error[E0425]: cannot find function `target_supported` in crate `pkg_config`
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libelf-sys-0.0.6/build.rs:4:25
[INFO] [stderr]   |
[INFO] [stderr] 4 |     assert!(pkg_config::target_supported());
[INFO] [stderr]   |                         ^^^^^^^^^^^^^^^^ not found in `pkg_config`
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `libdw-sys`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0425`.
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "61c1bef9ed02492724bae114f191e3daeca715098fafd06d9f2545375d2428b8"`
[INFO] running `"docker" "rm" "-f" "61c1bef9ed02492724bae114f191e3daeca715098fafd06d9f2545375d2428b8"`
[INFO] [stdout] 61c1bef9ed02492724bae114f191e3daeca715098fafd06d9f2545375d2428b8