[INFO] fetching crate libperl-rs 0.2.0...
[INFO] testing libperl-rs-0.2.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate libperl-rs 0.2.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate libperl-rs 0.2.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate libperl-rs 0.2.0
[INFO] finished tweaking crates.io crate libperl-rs 0.2.0
[INFO] tweaked toml for crates.io crate libperl-rs 0.2.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate libperl-rs 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wincolor v1.0.2
[INFO] [stderr]   Downloaded termcolor v1.0.5
[INFO] [stderr]   Downloaded atty v0.2.13
[INFO] [stderr]   Downloaded vec_map v0.8.1
[INFO] [stderr]   Downloaded log v0.4.8
[INFO] [stderr]   Downloaded rustc-demangle v0.1.16
[INFO] [stderr]   Downloaded clap v2.33.0
[INFO] [stderr]   Downloaded cc v1.0.45
[INFO] [stderr]   Downloaded bitflags v1.1.0
[INFO] [stderr]   Downloaded unicode-width v0.1.6
[INFO] [stderr]   Downloaded libperl-sys v0.2.0
[INFO] [stderr]   Downloaded aho-corasick v0.7.6
[INFO] [stderr]   Downloaded backtrace-sys v0.1.31
[INFO] [stderr]   Downloaded quick-error v1.2.2
[INFO] [stderr]   Downloaded memchr v2.2.1
[INFO] [stderr]   Downloaded cexpr v0.3.5
[INFO] [stderr]   Downloaded thread_local v0.3.6
[INFO] [stderr]   Downloaded regex-syntax v0.6.12
[INFO] [stderr]   Downloaded libc v0.2.62
[INFO] [stderr]   Downloaded winapi v0.3.8
[INFO] [stderr]   Downloaded regex v1.3.1
[INFO] [stderr]   Downloaded winapi-util v0.1.2
[INFO] [stderr]   Downloaded cfg-if v0.1.9
[INFO] [stderr]   Downloaded failure v0.1.5
[INFO] [stderr]   Downloaded backtrace v0.3.37
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a98e71e2ad852f211044d2a5700a6fcf52636144b9f4740a22e8205a27bd7d3e
[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" "a98e71e2ad852f211044d2a5700a6fcf52636144b9f4740a22e8205a27bd7d3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a98e71e2ad852f211044d2a5700a6fcf52636144b9f4740a22e8205a27bd7d3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a98e71e2ad852f211044d2a5700a6fcf52636144b9f4740a22e8205a27bd7d3e", kill_on_drop: false }`
[INFO] [stdout] a98e71e2ad852f211044d2a5700a6fcf52636144b9f4740a22e8205a27bd7d3e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6f795de90c9f0a90d0d9cc3c027064494918f59c6ff7fd0c2a1817a8e0c5a6fd
[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" "6f795de90c9f0a90d0d9cc3c027064494918f59c6ff7fd0c2a1817a8e0c5a6fd", kill_on_drop: false }`
[INFO] [stderr]    Compiling bindgen v0.44.0
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling backtrace v0.3.37
[INFO] [stderr]    Compiling clang-sys v0.26.4
[INFO] [stderr]    Compiling libperl-config v0.2.0
[INFO] [stderr]    Compiling env_logger v0.6.2
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling which v2.0.1
[INFO] [stderr]    Compiling libperl-rs v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling cexpr v0.3.5
[INFO] [stderr]    Compiling libperl-sys v0.2.0
[INFO] [stdout] error: linking with `cc` failed: exit code: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-Wl,--eh-frame-hdr" "-L" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/deps/libperl_sys-4a52b650e0ce7adc.libperl_sys.30aqohob-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/libperl_sys-4a52b650e0ce7adc.libperl_sys.30aqohob-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/libperl_sys-4a52b650e0ce7adc.libperl_sys.30aqohob-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/libperl_sys-4a52b650e0ce7adc.libperl_sys.30aqohob-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/libperl_sys-4a52b650e0ce7adc.libperl_sys.30aqohob-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/libperl_sys-4a52b650e0ce7adc.libperl_sys.30aqohob-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/libperl_sys-4a52b650e0ce7adc.libperl_sys.30aqohob-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/libperl_sys-4a52b650e0ce7adc.libperl_sys.30aqohob-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/libperl_sys-4a52b650e0ce7adc.libperl_sys.30aqohob-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/libperl_sys-4a52b650e0ce7adc.libperl_sys.30aqohob-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/libperl_sys-4a52b650e0ce7adc.libperl_sys.30aqohob-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/libperl_sys-4a52b650e0ce7adc.libperl_sys.30aqohob-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/libperl_sys-4a52b650e0ce7adc.libperl_sys.30aqohob-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/libperl_sys-4a52b650e0ce7adc.libperl_sys.30aqohob-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/libperl_sys-4a52b650e0ce7adc.libperl_sys.30aqohob-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/libperl_sys-4a52b650e0ce7adc.libperl_sys.30aqohob-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/deps/liblibperl_sys-4a52b650e0ce7adc.so" "-Wl,--version-script=/tmp/rustcq1wIW6/list" "/opt/rustwide/target/debug/deps/libperl_sys-4a52b650e0ce7adc.4pafzanwcwc6j1qs.rcgu.o" "-Wl,--gc-sections" "-shared" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-L" "/usr/local/lib" "-L" "/usr/lib/x86_64-linux-gnu/perl/5.30/CORE" "-L" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-lperl" "-ldl" "-lm" "-lpthread" "-lc" "-lcrypt" "-Wl,--start-group" "-Wl,-Bstatic" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-e12de7683a34c500.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-446a53c2e468675f.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-86fef9fb252a2d33.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-3bed9bfd30304751.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-0e38eeb474a7b386.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-a846ed547b824740.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-c9540f0a4fb9265d.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-7d2ca66c92c356eb.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-147e2c808f949493.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-bd2a4369506670e9.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-74bfdd0ce7d0ed48.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-6777f47f1c491841.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-b104f1790174f2be.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-db37898996f45c13.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-25b7435131fc4938.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-9d4b6f3c097e876e.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-3f953ad652ab829a.rlib" "-Wl,-Bdynamic" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc" "-Wl,-rpath,/usr/lib/x86_64-linux-gnu/perl/5.30/CORE"
[INFO] [stdout]   = note: /usr/bin/ld: cannot find -lperl
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `libperl-sys`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "6f795de90c9f0a90d0d9cc3c027064494918f59c6ff7fd0c2a1817a8e0c5a6fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f795de90c9f0a90d0d9cc3c027064494918f59c6ff7fd0c2a1817a8e0c5a6fd", kill_on_drop: false }`
[INFO] [stdout] 6f795de90c9f0a90d0d9cc3c027064494918f59c6ff7fd0c2a1817a8e0c5a6fd