[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 try#8de4b308b608cded0ebccf658a0fc719bce87d4e for pr-89056
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvroland%2Fmfnf-export" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vroland/mfnf-export on toolchain 8de4b308b608cded0ebccf658a0fc719bce87d4e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "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-7/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" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/serlo/mfnf-sitemap-parser`
[INFO] [stderr]     Updating git repository `https://github.com/serlo/mfnf-template-spec`
[INFO] [stderr]     Updating git repository `https://github.com/serlo/mediawiki-parser-utils`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dda5d07df7cae4038be2a0e3bd36452db9f7cc4f6d346d3410f158b47c663818
[INFO] running `Command { std: "docker" "start" "-a" "dda5d07df7cae4038be2a0e3bd36452db9f7cc4f6d346d3410f158b47c663818", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dda5d07df7cae4038be2a0e3bd36452db9f7cc4f6d346d3410f158b47c663818", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dda5d07df7cae4038be2a0e3bd36452db9f7cc4f6d346d3410f158b47c663818", kill_on_drop: false }`
[INFO] [stdout] dda5d07df7cae4038be2a0e3bd36452db9f7cc4f6d346d3410f158b47c663818
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 87f6b7ef7bf7345a2d78ee28a824e1ab3c9e768849ac6f68c28372b008514f46
[INFO] running `Command { std: "docker" "start" "-a" "87f6b7ef7bf7345a2d78ee28a824e1ab3c9e768849ac6f68c28372b008514f46", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.26
[INFO] [stderr]    Compiling serde v1.0.85
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[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 quote v0.3.15
[INFO] [stderr]    Compiling unicode-segmentation v1.2.1
[INFO] [stderr]    Compiling ryu v0.2.7
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking lazy_static v1.2.0
[INFO] [stderr]     Checking itoa v0.4.3
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]     Checking safemem v0.3.0
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]     Checking colored v1.7.0
[INFO] [stderr]    Compiling yaml-rust v0.4.2
[INFO] [stderr]    Compiling peg v0.5.7
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking base64 v0.9.3
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]    Compiling serde_yaml v0.8.8
[INFO] [stderr]    Compiling serde_yaml v0.7.5
[INFO] [stderr]     Checking serde_json v1.0.37
[INFO] [stderr]    Compiling syn v0.15.26
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling serde_derive v1.0.85
[INFO] [stderr]    Compiling structopt-derive v0.2.14
[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/serlo/mediawiki-parser-utils#67c63573)
[INFO] [stderr]    Compiling mwparser_utils_derive v0.1.0 (https://github.com/vroland/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-67cda159d6db359e/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', /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/linked-hash-map-0.5.1/src/lib.rs:174:52
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x562a0980734c - std::backtrace_rs::backtrace::libunwind::trace::h2ab374bc2a3b7023
[INFO] [stderr]                                  at /rustc/8de4b308b608cded0ebccf658a0fc719bce87d4e/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stderr]      1:     0x562a0980734c - std::backtrace_rs::backtrace::trace_unsynchronized::h128cb5178b04dc46
[INFO] [stderr]                                  at /rustc/8de4b308b608cded0ebccf658a0fc719bce87d4e/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x562a0980734c - std::sys_common::backtrace::_print_fmt::h5344f9eefca2041f
[INFO] [stderr]                                  at /rustc/8de4b308b608cded0ebccf658a0fc719bce87d4e/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]      3:     0x562a0980734c - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h213003bc5c7acf04
[INFO] [stderr]                                  at /rustc/8de4b308b608cded0ebccf658a0fc719bce87d4e/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]      4:     0x562a09827e9c - core::fmt::write::h78bf85fc3e93663f
[INFO] [stderr]                                  at /rustc/8de4b308b608cded0ebccf658a0fc719bce87d4e/library/core/src/fmt/mod.rs:1126:17
[INFO] [stderr]      5:     0x562a09804bb5 - std::io::Write::write_fmt::he619515c888f21a5
[INFO] [stderr]                                  at /rustc/8de4b308b608cded0ebccf658a0fc719bce87d4e/library/std/src/io/mod.rs:1667:15
[INFO] [stderr]      6:     0x562a09808a90 - std::sys_common::backtrace::_print::hf706674f77848203
[INFO] [stderr]                                  at /rustc/8de4b308b608cded0ebccf658a0fc719bce87d4e/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]      7:     0x562a09808a90 - std::sys_common::backtrace::print::hf0b6c7a88804ec56
[INFO] [stderr]                                  at /rustc/8de4b308b608cded0ebccf658a0fc719bce87d4e/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]      8:     0x562a09808a90 - std::panicking::default_hook::{{closure}}::h2dde766cd83a333a
[INFO] [stderr]                                  at /rustc/8de4b308b608cded0ebccf658a0fc719bce87d4e/library/std/src/panicking.rs:210:50
[INFO] [stderr]      9:     0x562a09808647 - std::panicking::default_hook::h501e3b2e134eb149
[INFO] [stderr]                                  at /rustc/8de4b308b608cded0ebccf658a0fc719bce87d4e/library/std/src/panicking.rs:227:9
[INFO] [stderr]     10:     0x562a09809144 - std::panicking::rust_panic_with_hook::hc09e869c4cf00885
[INFO] [stderr]                                  at /rustc/8de4b308b608cded0ebccf658a0fc719bce87d4e/library/std/src/panicking.rs:624:17
[INFO] [stderr]     11:     0x562a09808bf2 - std::panicking::begin_panic_handler::{{closure}}::hc2c6d70142458fc8
[INFO] [stderr]                                  at /rustc/8de4b308b608cded0ebccf658a0fc719bce87d4e/library/std/src/panicking.rs:519:13
[INFO] [stderr]     12:     0x562a098077f4 - std::sys_common::backtrace::__rust_end_short_backtrace::had58f7c459a1cd6e
[INFO] [stderr]                                  at /rustc/8de4b308b608cded0ebccf658a0fc719bce87d4e/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stderr]     13:     0x562a09808b89 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/8de4b308b608cded0ebccf658a0fc719bce87d4e/library/std/src/panicking.rs:517:5
[INFO] [stderr]     14:     0x562a09697001 - core::panicking::panic_fmt::hf443e5eeb6cc9eab
[INFO] [stderr]                                  at /rustc/8de4b308b608cded0ebccf658a0fc719bce87d4e/library/core/src/panicking.rs:103:14
[INFO] [stderr]     15:     0x562a09696f4d - core::panicking::panic::h50b51d19800453c0
[INFO] [stderr]                                  at /rustc/8de4b308b608cded0ebccf658a0fc719bce87d4e/library/core/src/panicking.rs:50:5
[INFO] [stderr]     16:     0x562a0976624d - core::mem::uninitialized::ha73fc5cf143f5f2f
[INFO] [stderr]                                  at /rustc/8de4b308b608cded0ebccf658a0fc719bce87d4e/library/core/src/mem/mod.rs:665:9
[INFO] [stderr]     17:     0x562a0976624d - linked_hash_map::LinkedHashMap<K,V,S>::ensure_guard_node::h8c8b2f4b317090ff
[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:     0x562a09766469 - linked_hash_map::LinkedHashMap<K,V,S>::insert::h04f386bffbffc22b
[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:     0x562a096e8145 - <serde_yaml::ser::SerializeStruct as serde::ser::SerializeStruct>::serialize_field::h1f0499fd0eac4fec
[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:     0x562a0972a959 - <serde::private::ser::TaggedSerializer<S> as serde::ser::Serializer>::serialize_struct::h1b5fb9235f85541b
[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:     0x562a096bd1f1 - build_script_build::ast::_IMPL_SERIALIZE_FOR_Document::<impl serde::ser::Serialize for build_script_build::ast::Document>::serialize::h782f18e9372832ba
[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:     0x562a09729eb8 - serde::private::ser::serialize_tagged_newtype::h6d11d9a6dc1b11c7
[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:     0x562a096be457 - build_script_build::ast::_IMPL_SERIALIZE_FOR_Element::<impl serde::ser::Serialize for build_script_build::ast::Element>::serialize::he7db5fa928f13340
[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:     0x562a0969ba08 - serde::ser::impls::<impl serde::ser::Serialize for &T>::serialize::h10f581d5857fa7c1
[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:     0x562a096e255b - serde_yaml::ser::to_yaml::h0a02bc08a3418405
[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:     0x562a096e2b89 - serde_yaml::ser::to_writer::h4c60cd056ab6469e
[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:     0x562a096e2449 - serde_yaml::ser::to_vec::h45504b5378f0872b
[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:     0x562a096e29c5 - serde_yaml::ser::to_string::he4083ca59e3206d7
[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:     0x562a0972ad88 - build_script_build::Test::write_code::h4a65176c4961a51b
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/mediawiki_parser-0.4.2/build.rs:68:13
[INFO] [stderr]     30:     0x562a0972b753 - build_script_build::generate_tests::h60ef14007742690e
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/mediawiki_parser-0.4.2/build.rs:102:9
[INFO] [stderr]     31:     0x562a0972b837 - build_script_build::main::h6ec8c00c0b15e565
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/mediawiki_parser-0.4.2/build.rs:108:5
[INFO] [stderr]     32:     0x562a096e3acb - core::ops::function::FnOnce::call_once::hd82b074d437da899
[INFO] [stderr]                                  at /rustc/8de4b308b608cded0ebccf658a0fc719bce87d4e/library/core/src/ops/function.rs:227:5
[INFO] [stderr]     33:     0x562a096ef46e - std::sys_common::backtrace::__rust_begin_short_backtrace::h7e68d0bdeac21d2c
[INFO] [stderr]                                  at /rustc/8de4b308b608cded0ebccf658a0fc719bce87d4e/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stderr]     34:     0x562a09737a91 - std::rt::lang_start::{{closure}}::h3b92ed893686d4ba
[INFO] [stderr]                                  at /rustc/8de4b308b608cded0ebccf658a0fc719bce87d4e/library/std/src/rt.rs:64:18
[INFO] [stderr]     35:     0x562a0980964a - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hab43eb8ec758341e
[INFO] [stderr]                                  at /rustc/8de4b308b608cded0ebccf658a0fc719bce87d4e/library/core/src/ops/function.rs:259:13
[INFO] [stderr]     36:     0x562a0980964a - std::panicking::try::do_call::hb667fefd650e964d
[INFO] [stderr]                                  at /rustc/8de4b308b608cded0ebccf658a0fc719bce87d4e/library/std/src/panicking.rs:403:40
[INFO] [stderr]     37:     0x562a0980964a - std::panicking::try::hc279775c9409768d
[INFO] [stderr]                                  at /rustc/8de4b308b608cded0ebccf658a0fc719bce87d4e/library/std/src/panicking.rs:367:19
[INFO] [stderr]     38:     0x562a0980964a - std::panic::catch_unwind::hbe8b6ecc84f73073
[INFO] [stderr]                                  at /rustc/8de4b308b608cded0ebccf658a0fc719bce87d4e/library/std/src/panic.rs:133:14
[INFO] [stderr]     39:     0x562a0980964a - std::rt::lang_start_internal::{{closure}}::hb04fdaef496a162b
[INFO] [stderr]                                  at /rustc/8de4b308b608cded0ebccf658a0fc719bce87d4e/library/std/src/rt.rs:46:48
[INFO] [stderr]     40:     0x562a0980964a - std::panicking::try::do_call::habca359de051411d
[INFO] [stderr]                                  at /rustc/8de4b308b608cded0ebccf658a0fc719bce87d4e/library/std/src/panicking.rs:403:40
[INFO] [stderr]     41:     0x562a0980964a - std::panicking::try::h24c556a6948e0937
[INFO] [stderr]                                  at /rustc/8de4b308b608cded0ebccf658a0fc719bce87d4e/library/std/src/panicking.rs:367:19
[INFO] [stderr]     42:     0x562a0980964a - std::panic::catch_unwind::h58075d47f5a308d8
[INFO] [stderr]                                  at /rustc/8de4b308b608cded0ebccf658a0fc719bce87d4e/library/std/src/panic.rs:133:14
[INFO] [stderr]     43:     0x562a0980964a - std::rt::lang_start_internal::h3d20dc1537d76758
[INFO] [stderr]                                  at /rustc/8de4b308b608cded0ebccf658a0fc719bce87d4e/library/std/src/rt.rs:46:20
[INFO] [stderr]     44:     0x562a09737a60 - std::rt::lang_start::h30fce2cfc6b7318c
[INFO] [stderr]                                  at /rustc/8de4b308b608cded0ebccf658a0fc719bce87d4e/library/std/src/rt.rs:63:17
[INFO] [stderr]     45:     0x562a0972cdbc - main
[INFO] [stderr]     46:     0x7f48245cc0b3 - __libc_start_main
[INFO] [stderr]     47:     0x562a096977be - _start
[INFO] [stderr]     48:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "87f6b7ef7bf7345a2d78ee28a824e1ab3c9e768849ac6f68c28372b008514f46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87f6b7ef7bf7345a2d78ee28a824e1ab3c9e768849ac6f68c28372b008514f46", kill_on_drop: false }`
[INFO] [stdout] 87f6b7ef7bf7345a2d78ee28a824e1ab3c9e768849ac6f68c28372b008514f46