[INFO] updating cached repository https://github.com/rchaser53/rust-monkey-ir
[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] 202bcb9fae0dfa8cc6357c067e8fa399b76172e8
[INFO] checking rchaser53/rust-monkey-ir against master#6250d56355d72264ece721e8d0dc95b16a6824b1 for pr-68350
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frchaser53%2Frust-monkey-ir" "/workspace/builds/worker-3/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rchaser53/rust-monkey-ir on toolchain 6250d56355d72264ece721e8d0dc95b16a6824b1
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6250d56355d72264ece721e8d0dc95b16a6824b1" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/rchaser53/rust-monkey-ir
[INFO] finished tweaking git repo https://github.com/rchaser53/rust-monkey-ir
[INFO] tweaked toml for git repo https://github.com/rchaser53/rust-monkey-ir written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/rchaser53/rust-monkey-ir already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6250d56355d72264ece721e8d0dc95b16a6824b1" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+6250d56355d72264ece721e8d0dc95b16a6824b1" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 40e10ab3543a3cddfa2c7d69bb7f5a7006499a332e35ec1e9bbcda7d3a351465
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "40e10ab3543a3cddfa2c7d69bb7f5a7006499a332e35ec1e9bbcda7d3a351465"`
[INFO] [stderr]    Compiling rustc-demangle v0.1.9
[INFO] [stderr]    Compiling utf8-ranges v1.0.1
[INFO] [stderr]    Compiling rust-monkey-ir v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling regex-syntax v0.6.3
[INFO] [stderr]    Compiling memchr v2.1.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.24
[INFO] [stderr]    Compiling ryu v0.2.6
[INFO] [stderr]    Compiling syn v0.15.13
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling backtrace v0.3.9
[INFO] [stderr]    Compiling serde_json v1.0.32
[INFO] [stderr]    Compiling aho-corasick v0.6.8
[INFO] [stderr]    Compiling error-chain v0.12.0
[INFO] [stderr]    Compiling regex v1.0.6
[INFO] [stderr]    Compiling llvm-sys v70.0.1
[INFO] [stderr]    Compiling synstructure v0.10.0
[INFO] [stderr]    Compiling failure_derive v0.1.3
[INFO] [stderr]    Compiling serde_derive v1.0.80
[INFO] [stderr]    Compiling failure v0.1.3
[INFO] [stderr]    Compiling cargo_metadata v0.6.1
[INFO] [stderr]    Compiling rustc-llvm-proxy v0.1.5
[INFO] [stderr] error: failed to run custom build command for `rustc-llvm-proxy v0.1.5`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/rustc-llvm-proxy-59ecccd8bea0c0e9/build-script-build` (exit code: 101)
[INFO] [stderr] --- stdout
[INFO] [stderr] cargo:rerun-if-changed=build.rs
[INFO] [stderr] cargo:rerun-if-changed=/opt/rustwide/target/debug/build/rustc-llvm-proxy-9a9bb03f4b10983c/out/llvm_gen.rs
[INFO] [stderr] 
[INFO] [stderr] --- stderr
[INFO] [stderr] thread 'main' panicked at 'Unable to parse 'llvm-sys' crate: ErrorMessage { msg: "Unable to get crate metadata" }
[INFO] [stderr] 
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x55729d4ddbb3 - backtrace::backtrace::libunwind::trace::hd8698eef4f47a6b3
[INFO] [stderr]                         at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.9/src/backtrace/libunwind.rs:53
[INFO] [stderr]                          - backtrace::backtrace::trace::he87095f740b7c667
[INFO] [stderr]                         at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.9/src/backtrace/mod.rs:42
[INFO] [stderr]    1:     0x55729d4d2923 - backtrace::capture::Backtrace::new_unresolved::hf5d08215345bf0e1
[INFO] [stderr]                         at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.9/src/capture.rs:88
[INFO] [stderr]    2:     0x55729d28009b - failure::backtrace::internal::InternalBacktrace::new::h215681c2a1881dfb
[INFO] [stderr]                         at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/failure-0.1.3/src/backtrace/internal.rs:44
[INFO] [stderr]    3:     0x55729d27f3ac - failure::backtrace::Backtrace::new::h3a3eb2768b795a57
[INFO] [stderr]                         at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/failure-0.1.3/src/backtrace/mod.rs:111
[INFO] [stderr]    4:     0x55729d23e33b - <failure::error::error_impl::ErrorImpl as core::convert::From<F>>::from::h6b8cf72bc2e902f0
[INFO] [stderr]                         at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/failure-0.1.3/src/error/error_impl.rs:19
[INFO] [stderr]    5:     0x55729d279227 - <failure::error::Error as core::convert::From<F>>::from::h153780efc7d2132d
[INFO] [stderr]                         at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/failure-0.1.3/src/error/mod.rs:36
[INFO] [stderr]    6:     0x55729d2509a5 - failure::error_message::err_msg::hbf211184f680f5d2
[INFO] [stderr]                         at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/failure-0.1.3/src/error_message.rs:12
[INFO] [stderr]    7:     0x55729d24def4 - build_script_build::llvm::Generator::get_llvm_sys_crate_path::{{closure}}::h7e6bf1a4cd21e46d
[INFO] [stderr]                         at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-llvm-proxy-0.1.5/build.rs:113
[INFO] [stderr]    8:     0x55729d27e578 - core::result::Result<T,E>::map_err::h50fd3ea7110d6411
[INFO] [stderr]                         at /rustc/6250d56355d72264ece721e8d0dc95b16a6824b1/src/libcore/result.rs:603
[INFO] [stderr]    9:     0x55729d24cab9 - build_script_build::llvm::Generator::get_llvm_sys_crate_path::h9b56bd10e352c526
[INFO] [stderr]                         at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-llvm-proxy-0.1.5/build.rs:112
[INFO] [stderr]   10:     0x55729d24bb78 - build_script_build::llvm::Generator::parse_llvm_sys_crate::h8a268965bc5e16c6
[INFO] [stderr]                         at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-llvm-proxy-0.1.5/build.rs:80
[INFO] [stderr]   11:     0x55729d250c80 - build_script_build::main::h46f490c04e353a4f
[INFO] [stderr]                         at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-llvm-proxy-0.1.5/build.rs:18
[INFO] [stderr]   12:     0x55729d2773af - std::rt::lang_start::{{closure}}::h1d6dee85f9510510
[INFO] [stderr]                         at /rustc/6250d56355d72264ece721e8d0dc95b16a6824b1/src/libstd/rt.rs:67
[INFO] [stderr]   13:     0x55729d508992 - std::rt::lang_start_internal::{{closure}}::h5c17144678350141
[INFO] [stderr]                         at src/libstd/rt.rs:52
[INFO] [stderr]                          - std::panicking::try::do_call::h8eaf10466ef75c80
[INFO] [stderr]                         at src/libstd/panicking.rs:305
[INFO] [stderr]   14:     0x55729d50edb6 - __rust_maybe_catch_panic
[INFO] [stderr]                         at src/libpanic_unwind/lib.rs:86
[INFO] [stderr]   15:     0x55729d50942f - std::panicking::try::hbd218b3dcbe12757
[INFO] [stderr]                         at src/libstd/panicking.rs:281
[INFO] [stderr]                          - std::panic::catch_unwind::h0175a6dbda08cacb
[INFO] [stderr]                         at src/libstd/panic.rs:394
[INFO] [stderr]                          - std::rt::lang_start_internal::h09fd43f7d6ed11c7
[INFO] [stderr]                         at src/libstd/rt.rs:51
[INFO] [stderr]   16:     0x55729d277388 - std::rt::lang_start::h13f322295ecac505
[INFO] [stderr]                         at /rustc/6250d56355d72264ece721e8d0dc95b16a6824b1/src/libstd/rt.rs:67
[INFO] [stderr]   17:     0x55729d250ee9 - main
[INFO] [stderr]   18:     0x7f4879803b96 - __libc_start_main
[INFO] [stderr]   19:     0x55729d21fa59 - _start
[INFO] [stderr]   20:                0x0 - <unknown>', /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-llvm-proxy-0.1.5/build.rs:18:5
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x55729d506564 - backtrace::backtrace::libunwind::trace::hc26826043b7bf82f
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.40/src/backtrace/libunwind.rs:88
[INFO] [stderr]    1:     0x55729d506564 - backtrace::backtrace::trace_unsynchronized::hf9fe7343abcf3b6a
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.40/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x55729d506564 - std::sys_common::backtrace::_print_fmt::hf5f83f377bc8d868
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:77
[INFO] [stderr]    3:     0x55729d506564 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hb2a7a6aa1b182a99
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:59
[INFO] [stderr]    4:     0x55729d526b6c - core::fmt::write::hc09f142ab04e56d2
[INFO] [stderr]                                at src/libcore/fmt/mod.rs:1057
[INFO] [stderr]    5:     0x55729d503837 - std::io::Write::write_fmt::hafa429c292548705
[INFO] [stderr]                                at src/libstd/io/mod.rs:1426
[INFO] [stderr]    6:     0x55729d508865 - std::sys_common::backtrace::_print::hcf3fff603fe810fd
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:62
[INFO] [stderr]    7:     0x55729d508865 - std::sys_common::backtrace::print::h5ea515a32d6700a5
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:49
[INFO] [stderr]    8:     0x55729d508865 - std::panicking::default_hook::{{closure}}::h324ce5172a1777e2
[INFO] [stderr]                                at src/libstd/panicking.rs:204
[INFO] [stderr]    9:     0x55729d508551 - std::panicking::default_hook::h6593dbc4932c953a
[INFO] [stderr]                                at src/libstd/panicking.rs:224
[INFO] [stderr]   10:     0x55729d508eca - std::panicking::rust_panic_with_hook::h04729d51ab5f86cb
[INFO] [stderr]                                at src/libstd/panicking.rs:472
[INFO] [stderr]   11:     0x55729d508ab0 - rust_begin_unwind
[INFO] [stderr]                                at src/libstd/panicking.rs:380
[INFO] [stderr]   12:     0x55729d525501 - core::panicking::panic_fmt::h13aca3a92bd42a1a
[INFO] [stderr]                                at src/libcore/panicking.rs:85
[INFO] [stderr]   13:     0x55729d525323 - core::option::expect_none_failed::h9f079317bf74cb06
[INFO] [stderr]                                at src/libcore/option.rs:1198
[INFO] [stderr]   14:     0x55729d27dd13 - core::result::Result<T,E>::expect::hbf4a1ed1910a92d1
[INFO] [stderr]                                at /rustc/6250d56355d72264ece721e8d0dc95b16a6824b1/src/libcore/result.rs:990
[INFO] [stderr]   15:     0x55729d250cab - build_script_build::main::h46f490c04e353a4f
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-llvm-proxy-0.1.5/build.rs:18
[INFO] [stderr]   16:     0x55729d2773b0 - std::rt::lang_start::{{closure}}::h1d6dee85f9510510
[INFO] [stderr]                                at /rustc/6250d56355d72264ece721e8d0dc95b16a6824b1/src/libstd/rt.rs:67
[INFO] [stderr]   17:     0x55729d508993 - std::rt::lang_start_internal::{{closure}}::h5c17144678350141
[INFO] [stderr]                                at src/libstd/rt.rs:52
[INFO] [stderr]   18:     0x55729d508993 - std::panicking::try::do_call::h8eaf10466ef75c80
[INFO] [stderr]                                at src/libstd/panicking.rs:305
[INFO] [stderr]   19:     0x55729d50edb7 - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:86
[INFO] [stderr]   20:     0x55729d509430 - std::panicking::try::hbd218b3dcbe12757
[INFO] [stderr]                                at src/libstd/panicking.rs:281
[INFO] [stderr]   21:     0x55729d509430 - std::panic::catch_unwind::h0175a6dbda08cacb
[INFO] [stderr]                                at src/libstd/panic.rs:394
[INFO] [stderr]   22:     0x55729d509430 - std::rt::lang_start_internal::h09fd43f7d6ed11c7
[INFO] [stderr]                                at src/libstd/rt.rs:51
[INFO] [stderr]   23:     0x55729d277389 - std::rt::lang_start::h13f322295ecac505
[INFO] [stderr]                                at /rustc/6250d56355d72264ece721e8d0dc95b16a6824b1/src/libstd/rt.rs:67
[INFO] [stderr]   24:     0x55729d250eea - main
[INFO] [stderr]   25:     0x7f4879803b97 - __libc_start_main
[INFO] [stderr]   26:     0x55729d21fa5a - _start
[INFO] [stderr]   27:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] running `"docker" "inspect" "40e10ab3543a3cddfa2c7d69bb7f5a7006499a332e35ec1e9bbcda7d3a351465"`
[INFO] running `"docker" "rm" "-f" "40e10ab3543a3cddfa2c7d69bb7f5a7006499a332e35ec1e9bbcda7d3a351465"`
[INFO] [stdout] 40e10ab3543a3cddfa2c7d69bb7f5a7006499a332e35ec1e9bbcda7d3a351465