[INFO] updating cached repository https://github.com/mozamimy/repro-sass-sys-build-failure
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e609e9dfa9f40f192092820fa4ea327827543aff
[INFO] checking mozamimy/repro-sass-sys-build-failure against master#30ca215b4e38b32aa7abdd635c5e2d56f5724494 for pr-66037
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmozamimy%2Frepro-sass-sys-build-failure" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mozamimy/repro-sass-sys-build-failure on toolchain 30ca215b4e38b32aa7abdd635c5e2d56f5724494
[INFO] running `"/workspace/cargo-home/bin/cargo" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/mozamimy/repro-sass-sys-build-failure
[INFO] finished tweaking git repo https://github.com/mozamimy/repro-sass-sys-build-failure
[INFO] tweaked toml for git repo https://github.com/mozamimy/repro-sass-sys-build-failure written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/mozamimy/repro-sass-sys-build-failure already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] fb8031edcf594e680a5e4a310dadce0d2b4813414170ffb2cf89180902462b2c
[INFO] running `"docker" "start" "-a" "fb8031edcf594e680a5e4a310dadce0d2b4813414170ffb2cf89180902462b2c"`
[INFO] [stderr]    Compiling num_cpus v1.10.0
[INFO] [stderr]    Compiling sass-sys v0.4.8 (https://github.com/mozamimy/sass-rs.git?branch=debug-cpu-num#c6dd9551)
[INFO] [stderr] error: failed to run custom build command for `sass-sys v0.4.8 (https://github.com/mozamimy/sass-rs.git?branch=debug-cpu-num#c6dd9551)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/sass-sys-1b069c91494e4c06/build-script-build` (exit code: 101)
[INFO] [stderr] --- stdout
[INFO] [stderr] DEBUG: jobs = 8
[INFO] [stderr] 
[INFO] [stderr] --- stderr
[INFO] [stderr] thread 'main' panicked at 'Build error:
[INFO] [stderr] STDERR:g++: internal compiler error: Killed (program cc1plus)
[INFO] [stderr] Please submit a full bug report,
[INFO] [stderr] with preprocessed source if appropriate.
[INFO] [stderr] See <file:///usr/share/doc/gcc-7/README.Bugs> for instructions.
[INFO] [stderr] make: *** [src/functions.o] Error 4
[INFO] [stderr] make: *** Waiting for unfinished jobs....
[INFO] [stderr] 
[INFO] [stderr] STDOUT:mkdir lib
[INFO] [stderr] cc -Wall -O2 -DLIBSASS_VERSION="\"3.5.5\"" -I /opt/rustwide/target/debug/build/sass-sys-02b200a87dfd7940/out/build/include -fPIC -fPIC -c -o src/cencode.o src/cencode.c
[INFO] [stderr] g++ -Wall -O2 -DLIBSASS_VERSION="\"3.5.5\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-02b200a87dfd7940/out/build/include -fPIC -fPIC -c -o src/ast.o src/ast.cpp
[INFO] [stderr] g++ -Wall -O2 -DLIBSASS_VERSION="\"3.5.5\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-02b200a87dfd7940/out/build/include -fPIC -fPIC -c -o src/node.o src/node.cpp
[INFO] [stderr] g++ -Wall -O2 -DLIBSASS_VERSION="\"3.5.5\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-02b200a87dfd7940/out/build/include -fPIC -fPIC -c -o src/context.o src/context.cpp
[INFO] [stderr] g++ -Wall -O2 -DLIBSASS_VERSION="\"3.5.5\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-02b200a87dfd7940/out/build/include -fPIC -fPIC -c -o src/constants.o src/constants.cpp
[INFO] [stderr] g++ -Wall -O2 -DLIBSASS_VERSION="\"3.5.5\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-02b200a87dfd7940/out/build/include -fPIC -fPIC -c -o src/functions.o src/functions.cpp
[INFO] [stderr] g++ -Wall -O2 -DLIBSASS_VERSION="\"3.5.5\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-02b200a87dfd7940/out/build/include -fPIC -fPIC -c -o src/color_maps.o src/color_maps.cpp
[INFO] [stderr] g++ -Wall -O2 -DLIBSASS_VERSION="\"3.5.5\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-02b200a87dfd7940/out/build/include -fPIC -fPIC -c -o src/environment.o src/environment.cpp
[INFO] [stderr] g++ -Wall -O2 -DLIBSASS_VERSION="\"3.5.5\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-02b200a87dfd7940/out/build/include -fPIC -fPIC -c -o src/ast_fwd_decl.o src/ast_fwd_decl.cpp
[INFO] [stderr] g++ -Wall -O2 -DLIBSASS_VERSION="\"3.5.5\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-02b200a87dfd7940/out/build/include -fPIC -fPIC -c -o src/bind.o src/bind.cpp
[INFO] [stderr] g++ -Wall -O2 -DLIBSASS_VERSION="\"3.5.5\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-02b200a87dfd7940/out/build/include -fPIC -fPIC -c -o src/file.o src/file.cpp
[INFO] [stderr] g++ -Wall -O2 -DLIBSASS_VERSION="\"3.5.5\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-02b200a87dfd7940/out/build/include -fPIC -fPIC -c -o src/util.o src/util.cpp
[INFO] [stderr] g++ -Wall -O2 -DLIBSASS_VERSION="\"3.5.5\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-02b200a87dfd7940/out/build/include -fPIC -fPIC -c -o src/json.o src/json.cpp
[INFO] [stderr] g++ -Wall -O2 -DLIBSASS_VERSION="\"3.5.5\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-02b200a87dfd7940/out/build/include -fPIC -fPIC -c -o src/units.o src/units.cpp
[INFO] [stderr] g++ -Wall -O2 -DLIBSASS_VERSION="\"3.5.5\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-02b200a87dfd7940/out/build/include -fPIC -fPIC -c -o src/values.o src/values.cpp
[INFO] [stderr] g++ -Wall -O2 -DLIBSASS_VERSION="\"3.5.5\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-02b200a87dfd7940/out/build/include -fPIC -fPIC -c -o src/plugins.o src/plugins.cpp
[INFO] [stderr] g++ -Wall -O2 -DLIBSASS_VERSION="\"3.5.5\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-02b200a87dfd7940/out/build/include -fPIC -fPIC -c -o src/position.o src/position.cpp
[INFO] [stderr] g++ -Wall -O2 -DLIBSASS_VERSION="\"3.5.5\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-02b200a87dfd7940/out/build/include -fPIC -fPIC -c -o src/lexer.o src/lexer.cpp
[INFO] [stderr] g++ -Wall -O2 -DLIBSASS_VERSION="\"3.5.5\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-02b200a87dfd7940/out/build/include -fPIC -fPIC -c -o src/parser.o src/parser.cpp
[INFO] [stderr] g++ -Wall -O2 -DLIBSASS_VERSION="\"3.5.5\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-02b200a87dfd7940/out/build/include -fPIC -fPIC -c -o src/prelexer.o src/prelexer.cpp
[INFO] [stderr] g++ -Wall -O2 -DLIBSASS_VERSION="\"3.5.5\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-02b200a87dfd7940/out/build/include -fPIC -fPIC -c -o src/eval.o src/eval.cpp
[INFO] [stderr] g++ -Wall -O2 -DLIBSASS_VERSION="\"3.5.5\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-02b200a87dfd7940/out/build/include -fPIC -fPIC -c -o src/expand.o src/expand.cpp
[INFO] [stderr] g++ -Wall -O2 -DLIBSASS_VERSION="\"3.5.5\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-02b200a87dfd7940/out/build/include -fPIC -fPIC -c -o src/listize.o src/listize.cpp
[INFO] [stderr] g++ -Wall -O2 -DLIBSASS_VERSION="\"3.5.5\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-02b200a87dfd7940/out/build/include -fPIC -fPIC -c -o src/cssize.o src/cssize.cpp
[INFO] [stderr] g++ -Wall -O2 -DLIBSASS_VERSION="\"3.5.5\"" -std=c++0x -I /opt/rustwide/target/debug/build/sass-sys-02b200a87dfd7940/out/build/include -fPIC -fPIC -c -o src/extend.o src/extend.cpp
[INFO] [stderr] Makefile:249: recipe for target 'src/functions.o' failed
[INFO] [stderr] ', /opt/rustwide/cargo-home/git/checkouts/sass-rs-cad8e066ed7f6678/c6dd955/sass-sys/build.rs:83:9
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x560d846745d4 - backtrace::backtrace::libunwind::trace::h80055c9fc04ee02a
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.40/src/backtrace/libunwind.rs:88
[INFO] [stderr]    1:     0x560d846745d4 - backtrace::backtrace::trace_unsynchronized::hdc3325d56f0c3cf3
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.40/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x560d846745d4 - std::sys_common::backtrace::_print_fmt::hf6698baf6d0d6f95
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:77
[INFO] [stderr]    3:     0x560d846745d4 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hde7eb8c3d6c49873
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:59
[INFO] [stderr]    4:     0x560d84691e0c - core::fmt::write::h5d76b6b7b1847936
[INFO] [stderr]                                at src/libcore/fmt/mod.rs:1057
[INFO] [stderr]    5:     0x560d846715b7 - std::io::Write::write_fmt::h77ba5ebe1eee52ad
[INFO] [stderr]                                at src/libstd/io/mod.rs:1426
[INFO] [stderr]    6:     0x560d84676735 - std::sys_common::backtrace::_print::hf8a47a8d351e0fbd
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:62
[INFO] [stderr]    7:     0x560d84676735 - std::sys_common::backtrace::print::h71ada4f56fb6e22c
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:49
[INFO] [stderr]    8:     0x560d84676735 - std::panicking::default_hook::{{closure}}::h6a3ba1f4739dcd04
[INFO] [stderr]                                at src/libstd/panicking.rs:195
[INFO] [stderr]    9:     0x560d84676421 - std::panicking::default_hook::he979893a7228a5c0
[INFO] [stderr]                                at src/libstd/panicking.rs:215
[INFO] [stderr]   10:     0x560d84676cea - std::panicking::rust_panic_with_hook::h697f90879213769b
[INFO] [stderr]                                at src/libstd/panicking.rs:463
[INFO] [stderr]   11:     0x560d846768d0 - rust_begin_unwind
[INFO] [stderr]                                at src/libstd/panicking.rs:371
[INFO] [stderr]   12:     0x560d8467684b - std::panicking::begin_panic_fmt::h6084eaa6fecb1a9f
[INFO] [stderr]                                at src/libstd/panicking.rs:325
[INFO] [stderr]   13:     0x560d84632def - build_script_build::compile::hc9f6bd0a1f92df8b
[INFO] [stderr]                                at /opt/rustwide/cargo-home/git/checkouts/sass-rs-cad8e066ed7f6678/c6dd955/sass-sys/build.rs:83
[INFO] [stderr]   14:     0x560d846332e0 - build_script_build::main::h819e113026f8483f
[INFO] [stderr]                                at /opt/rustwide/cargo-home/git/checkouts/sass-rs-cad8e066ed7f6678/c6dd955/sass-sys/build.rs:168
[INFO] [stderr]   15:     0x560d84634fe0 - std::rt::lang_start::{{closure}}::h1af8624ae1dfeb66
[INFO] [stderr]                                at /rustc/30ca215b4e38b32aa7abdd635c5e2d56f5724494/src/libstd/rt.rs:67
[INFO] [stderr]   16:     0x560d84676803 - std::rt::lang_start_internal::{{closure}}::h7ff682ecef2392c4
[INFO] [stderr]                                at src/libstd/rt.rs:52
[INFO] [stderr]   17:     0x560d84676803 - std::panicking::try::do_call::h6e874d12a78bb537
[INFO] [stderr]                                at src/libstd/panicking.rs:296
[INFO] [stderr]   18:     0x560d8467e0ea - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:79
[INFO] [stderr]   19:     0x560d84677190 - std::panicking::try::h21e662efa77e70e9
[INFO] [stderr]                                at src/libstd/panicking.rs:272
[INFO] [stderr]   20:     0x560d84677190 - std::panic::catch_unwind::hcf22a1acd4d4cf4f
[INFO] [stderr]                                at src/libstd/panic.rs:394
[INFO] [stderr]   21:     0x560d84677190 - std::rt::lang_start_internal::hf0c209ee2831e2b5
[INFO] [stderr]                                at src/libstd/rt.rs:51
[INFO] [stderr]   22:     0x560d84634fb9 - std::rt::lang_start::h020e3c5100f548c4
[INFO] [stderr]                                at /rustc/30ca215b4e38b32aa7abdd635c5e2d56f5724494/src/libstd/rt.rs:67
[INFO] [stderr]   23:     0x560d8463331a - main
[INFO] [stderr]   24:     0x7f0b80964b97 - __libc_start_main
[INFO] [stderr]   25:     0x560d8463107a - _start
[INFO] [stderr]   26:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] running `"docker" "inspect" "fb8031edcf594e680a5e4a310dadce0d2b4813414170ffb2cf89180902462b2c"`
[INFO] running `"docker" "rm" "-f" "fb8031edcf594e680a5e4a310dadce0d2b4813414170ffb2cf89180902462b2c"`
[INFO] [stdout] fb8031edcf594e680a5e4a310dadce0d2b4813414170ffb2cf89180902462b2c