[INFO] fetching crate libdw 0.0.6...
[INFO] checking libdw-0.0.6 against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] extracting crate libdw 0.0.6 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate libdw 0.0.6 on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "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] 4765f8abd995b63f8910e41d635b90f6a743105a1881da59b08614d05361a322
[INFO] running `Command { std: "docker" "start" "-a" "4765f8abd995b63f8910e41d635b90f6a743105a1881da59b08614d05361a322", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4765f8abd995b63f8910e41d635b90f6a743105a1881da59b08614d05361a322", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4765f8abd995b63f8910e41d635b90f6a743105a1881da59b08614d05361a322", kill_on_drop: false }`
[INFO] [stdout] 4765f8abd995b63f8910e41d635b90f6a743105a1881da59b08614d05361a322
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4ad9fde4c03c8411bcccbdb2575af68357e4508540f9e65b090f19916958f97a
[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" "4ad9fde4c03c8411bcccbdb2575af68357e4508540f9e65b090f19916958f97a", kill_on_drop: false }`
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling libelf-sys v0.0.6
[INFO] [stderr]    Compiling libdw-sys v0.0.6
[INFO] [stdout] error[E0425]: cannot find function `target_supported` in crate `pkg_config`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libelf-sys-0.0.6/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] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0425]: cannot find function `target_supported` in crate `pkg_config`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libdw-sys-0.0.6/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: build failed
[INFO] running `Command { std: "docker" "inspect" "4ad9fde4c03c8411bcccbdb2575af68357e4508540f9e65b090f19916958f97a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ad9fde4c03c8411bcccbdb2575af68357e4508540f9e65b090f19916958f97a", kill_on_drop: false }`
[INFO] [stdout] 4ad9fde4c03c8411bcccbdb2575af68357e4508540f9e65b090f19916958f97a