[INFO] cloning repository https://github.com/vroland/mfnf-export
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vroland/mfnf-export" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvroland%2Fmfnf-export", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvroland%2Fmfnf-export'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9cb12bb9efddb477c78c8de74c67555525bf15d4
[INFO] checking vroland/mfnf-export against master#a5f164faad4a2fed606b8160fd7ecd2d5cbba381 for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvroland%2Fmfnf-export" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vroland/mfnf-export on toolchain a5f164faad4a2fed606b8160fd7ecd2d5cbba381
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/vroland/mfnf-export
[INFO] finished tweaking git repo https://github.com/vroland/mfnf-export
[INFO] tweaked toml for git repo https://github.com/vroland/mfnf-export written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/vroland/mfnf-export already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 007aeff708f584cfaab1237a1b762e7d8fad5267c597ab34468018a44875e3ec
[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" "007aeff708f584cfaab1237a1b762e7d8fad5267c597ab34468018a44875e3ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "007aeff708f584cfaab1237a1b762e7d8fad5267c597ab34468018a44875e3ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "007aeff708f584cfaab1237a1b762e7d8fad5267c597ab34468018a44875e3ec", kill_on_drop: false }`
[INFO] [stdout] 007aeff708f584cfaab1237a1b762e7d8fad5267c597ab34468018a44875e3ec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2ee5a4ce51daecddb9c371c40de012c41b3833c512e8c9b6ff98165c6a0a7092
[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" "2ee5a4ce51daecddb9c371c40de012c41b3833c512e8c9b6ff98165c6a0a7092", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.26
[INFO] [stderr]    Compiling serde v1.0.85
[INFO] [stderr]    Compiling linked-hash-map v0.5.1
[INFO] [stderr]    Compiling dtoa v0.4.3
[INFO] [stderr]    Compiling libc v0.2.48
[INFO] [stderr]    Compiling ryu v0.2.7
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]     Checking itoa v0.4.3
[INFO] [stderr]     Checking lazy_static v1.2.0
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]     Checking safemem v0.3.0
[INFO] [stderr]     Checking yaml-rust v0.4.2
[INFO] [stderr]     Checking colored v1.7.0
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]    Compiling peg v0.5.7
[INFO] [stderr]     Checking base64 v0.9.3
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]    Compiling syn v0.15.26
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking serde_yaml v0.8.8
[INFO] [stderr]     Checking serde_json v1.0.37
[INFO] [stderr]    Compiling serde_derive v1.0.85
[INFO] [stderr]    Compiling structopt-derive v0.2.14
[INFO] [stderr]    Compiling serde_yaml v0.7.5
[INFO] [stderr]     Checking structopt v0.2.14
[INFO] [stderr]    Compiling mediawiki_parser v0.4.2
[INFO] [stderr]    Compiling mwparser_utils_derive v0.1.0 (https://github.com/vroland/mediawiki-parser-utils#67c63573)
[INFO] [stderr]    Compiling mwparser_utils_derive v0.1.0 (https://github.com/serlo/mediawiki-parser-utils#67c63573)
[INFO] [stderr] error: failed to run custom build command for `mediawiki_parser v0.4.2`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/mediawiki_parser-426642699ae16ff2/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   cargo:rerun-if-changed=src/grammar.rustpeg
[INFO] [stderr]   cargo:rerun-if-changed=doc/docs.yml
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread 'main' panicked at 'attempted to leave type `linked_hash_map::Node<yaml::Yaml, yaml::Yaml>` uninitialized, which is invalid', /rustc/a5f164faad4a2fed606b8160fd7ecd2d5cbba381/library/core/src/mem/mod.rs:660:9
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x557e0958e670 - std::backtrace_rs::backtrace::libunwind::trace::hdcf4f90f85129e83
[INFO] [stderr]                                  at /rustc/a5f164faad4a2fed606b8160fd7ecd2d5cbba381/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stderr]      1:     0x557e0958e670 - std::backtrace_rs::backtrace::trace_unsynchronized::h2669e30cb82f6732
[INFO] [stderr]                                  at /rustc/a5f164faad4a2fed606b8160fd7ecd2d5cbba381/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x557e0958e670 - std::sys_common::backtrace::_print_fmt::hfbda19e17f6db318
[INFO] [stderr]                                  at /rustc/a5f164faad4a2fed606b8160fd7ecd2d5cbba381/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]      3:     0x557e0958e670 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h1a8751bf59281272
[INFO] [stderr]                                  at /rustc/a5f164faad4a2fed606b8160fd7ecd2d5cbba381/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]      4:     0x557e095aecbf - core::fmt::write::h7aa6cd0067dca82a
[INFO] [stderr]                                  at /rustc/a5f164faad4a2fed606b8160fd7ecd2d5cbba381/library/core/src/fmt/mod.rs:1094:17
[INFO] [stderr]      5:     0x557e0958c395 - std::io::Write::write_fmt::hd7dd3a1df9b6befb
[INFO] [stderr]                                  at /rustc/a5f164faad4a2fed606b8160fd7ecd2d5cbba381/library/std/src/io/mod.rs:1584:15
[INFO] [stderr]      6:     0x557e095902fb - std::sys_common::backtrace::_print::h551e9ec8a9fa8106
[INFO] [stderr]                                  at /rustc/a5f164faad4a2fed606b8160fd7ecd2d5cbba381/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]      7:     0x557e095902fb - std::sys_common::backtrace::print::ha4b1c5e95fa040b3
[INFO] [stderr]                                  at /rustc/a5f164faad4a2fed606b8160fd7ecd2d5cbba381/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]      8:     0x557e095902fb - std::panicking::default_hook::{{closure}}::h0b34c9ab7fb9f857
[INFO] [stderr]                                  at /rustc/a5f164faad4a2fed606b8160fd7ecd2d5cbba381/library/std/src/panicking.rs:208:50
[INFO] [stderr]      9:     0x557e0958fddd - std::panicking::default_hook::h3067e8318decd17a
[INFO] [stderr]                                  at /rustc/a5f164faad4a2fed606b8160fd7ecd2d5cbba381/library/std/src/panicking.rs:225:9
[INFO] [stderr]     10:     0x557e095908ad - std::panicking::rust_panic_with_hook::h81b8facc50f34daa
[INFO] [stderr]                                  at /rustc/a5f164faad4a2fed606b8160fd7ecd2d5cbba381/library/std/src/panicking.rs:591:17
[INFO] [stderr]     11:     0x557e09590477 - std::panicking::begin_panic_handler::{{closure}}::ha376ab85d95a000e
[INFO] [stderr]                                  at /rustc/a5f164faad4a2fed606b8160fd7ecd2d5cbba381/library/std/src/panicking.rs:495:13
[INFO] [stderr]     12:     0x557e0958eb2c - std::sys_common::backtrace::__rust_end_short_backtrace::h6795c8afdd1a77e6
[INFO] [stderr]                                  at /rustc/a5f164faad4a2fed606b8160fd7ecd2d5cbba381/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stderr]     13:     0x557e09590409 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/a5f164faad4a2fed606b8160fd7ecd2d5cbba381/library/std/src/panicking.rs:493:5
[INFO] [stderr]     14:     0x557e09420ec1 - core::panicking::panic_fmt::hbe99dddd3092ba3c
[INFO] [stderr]                                  at /rustc/a5f164faad4a2fed606b8160fd7ecd2d5cbba381/library/core/src/panicking.rs:92:14
[INFO] [stderr]     15:     0x557e09420e0d - core::panicking::panic::h3de4db67bd397eb3
[INFO] [stderr]                                  at /rustc/a5f164faad4a2fed606b8160fd7ecd2d5cbba381/library/core/src/panicking.rs:50:5
[INFO] [stderr]     16:     0x557e094efae5 - core::mem::uninitialized::h1fab5377c694a3c9
[INFO] [stderr]                                  at /rustc/a5f164faad4a2fed606b8160fd7ecd2d5cbba381/library/core/src/mem/mod.rs:660:9
[INFO] [stderr]     17:     0x557e094efae5 - linked_hash_map::LinkedHashMap<K,V,S>::ensure_guard_node::hf68a22cd576e6be1
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/linked-hash-map-0.5.1/src/lib.rs:174:52
[INFO] [stderr]     18:     0x557e094efd0c - linked_hash_map::LinkedHashMap<K,V,S>::insert::h22e1e3edef7c16fb
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/linked-hash-map-0.5.1/src/lib.rs:304:9
[INFO] [stderr]     19:     0x557e0947b7c8 - <serde_yaml::ser::SerializeStruct as serde::ser::SerializeStruct>::serialize_field::h899752616962f877
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde_yaml-0.8.8/src/ser.rs:371:9
[INFO] [stderr]     20:     0x557e094b7f26 - <serde::private::ser::TaggedSerializer<S> as serde::ser::Serializer>::serialize_struct::h788190258638ec8f
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde-1.0.85/src/private/ser.rs:294:14
[INFO] [stderr]     21:     0x557e09446f11 - build_script_build::ast::_IMPL_SERIALIZE_FOR_Document::<impl serde::ser::Serialize for build_script_build::ast::Document>::serialize::ha46c1cb4a9c7c8ba
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/mediawiki_parser-0.4.2/src/ast.rs:37:17
[INFO] [stderr]     22:     0x557e094b6e88 - serde::private::ser::serialize_tagged_newtype::ha9f00294f376083d
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde-1.0.85/src/private/ser.rs:29:5
[INFO] [stderr]     23:     0x557e094481a6 - build_script_build::ast::_IMPL_SERIALIZE_FOR_Element::<impl serde::ser::Serialize for build_script_build::ast::Element>::serialize::h00036e7ab5d4bdcb
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/mediawiki_parser-0.4.2/src/ast.rs:13:17
[INFO] [stderr]     24:     0x557e09425ac8 - serde::ser::impls::<impl serde::ser::Serialize for &T>::serialize::h76b35eeb9736cb96
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde-1.0.85/src/ser/impls.rs:365:17
[INFO] [stderr]     25:     0x557e09477ceb - serde_yaml::ser::to_yaml::h54d297fbf0dc70f0
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde_yaml-0.8.8/src/ser.rs:460:5
[INFO] [stderr]     26:     0x557e094781f9 - serde_yaml::ser::to_writer::h218968fa34802612
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde_yaml-0.8.8/src/ser.rs:406:15
[INFO] [stderr]     27:     0x557e09477a69 - serde_yaml::ser::to_vec::hfe48af5ee1b3ec32
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde_yaml-0.8.8/src/ser.rs:423:5
[INFO] [stderr]     28:     0x557e09478016 - serde_yaml::ser::to_string::he44b61416107f449
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde_yaml-0.8.8/src/ser.rs:435:26
[INFO] [stderr]     29:     0x557e094c1cba - build_script_build::Test::write_code::h8f4a4fd247aec603
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/mediawiki_parser-0.4.2/build.rs:68:13
[INFO] [stderr]     30:     0x557e094c25b7 - build_script_build::generate_tests::ha18cda115f44e686
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/mediawiki_parser-0.4.2/build.rs:102:9
[INFO] [stderr]     31:     0x557e094c2797 - build_script_build::main::hc448b48102066038
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/mediawiki_parser-0.4.2/build.rs:108:5
[INFO] [stderr]     32:     0x557e0947e17b - core::ops::function::FnOnce::call_once::h05957def99ce86a8
[INFO] [stderr]                                  at /rustc/a5f164faad4a2fed606b8160fd7ecd2d5cbba381/library/core/src/ops/function.rs:227:5
[INFO] [stderr]     33:     0x557e0947dd7e - std::sys_common::backtrace::__rust_begin_short_backtrace::he0bb955c0dee13f4
[INFO] [stderr]                                  at /rustc/a5f164faad4a2fed606b8160fd7ecd2d5cbba381/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stderr]     34:     0x557e094be931 - std::rt::lang_start::{{closure}}::h573a65ba8b830a9e
[INFO] [stderr]                                  at /rustc/a5f164faad4a2fed606b8160fd7ecd2d5cbba381/library/std/src/rt.rs:49:18
[INFO] [stderr]     35:     0x557e09590caa - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h3b8c329143d7638a
[INFO] [stderr]                                  at /rustc/a5f164faad4a2fed606b8160fd7ecd2d5cbba381/library/core/src/ops/function.rs:259:13
[INFO] [stderr]     36:     0x557e09590caa - std::panicking::try::do_call::h4b72c261b4eefc1b
[INFO] [stderr]                                  at /rustc/a5f164faad4a2fed606b8160fd7ecd2d5cbba381/library/std/src/panicking.rs:379:40
[INFO] [stderr]     37:     0x557e09590caa - std::panicking::try::h703d31b7896cbd49
[INFO] [stderr]                                  at /rustc/a5f164faad4a2fed606b8160fd7ecd2d5cbba381/library/std/src/panicking.rs:343:19
[INFO] [stderr]     38:     0x557e09590caa - std::panic::catch_unwind::h37cad9b35388a915
[INFO] [stderr]                                  at /rustc/a5f164faad4a2fed606b8160fd7ecd2d5cbba381/library/std/src/panic.rs:431:14
[INFO] [stderr]     39:     0x557e09590caa - std::rt::lang_start_internal::hab5a8a909af4f90e
[INFO] [stderr]                                  at /rustc/a5f164faad4a2fed606b8160fd7ecd2d5cbba381/library/std/src/rt.rs:34:21
[INFO] [stderr]     40:     0x557e094be910 - std::rt::lang_start::hd1d0f8b02c1da991
[INFO] [stderr]                                  at /rustc/a5f164faad4a2fed606b8160fd7ecd2d5cbba381/library/std/src/rt.rs:48:5
[INFO] [stderr]     41:     0x557e094c3cfc - main
[INFO] [stderr]     42:     0x7f0f856360b3 - __libc_start_main
[INFO] [stderr]     43:     0x557e0942161e - _start
[INFO] [stderr]     44:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "2ee5a4ce51daecddb9c371c40de012c41b3833c512e8c9b6ff98165c6a0a7092", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ee5a4ce51daecddb9c371c40de012c41b3833c512e8c9b6ff98165c6a0a7092", kill_on_drop: false }`
[INFO] [stdout] 2ee5a4ce51daecddb9c371c40de012c41b3833c512e8c9b6ff98165c6a0a7092