[INFO] cloning repository https://github.com/vroland/mwlint
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vroland/mwlint" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvroland%2Fmwlint", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvroland%2Fmwlint'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c3796f138eb5e019d83f2693283043c60321c366
[INFO] checking vroland/mwlint against master#36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 for pr-81863
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvroland%2Fmwlint" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vroland/mwlint on toolchain 36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/vroland/mwlint
[INFO] finished tweaking git repo https://github.com/vroland/mwlint
[INFO] tweaked toml for git repo https://github.com/vroland/mwlint written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/vroland/mwlint already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_yaml v0.8.8
[INFO] [stderr]   Downloaded serde_derive v1.0.80
[INFO] [stderr]   Downloaded redox_syscall v0.1.43
[INFO] [stderr]   Downloaded peg v0.5.7
[INFO] [stderr]   Downloaded structopt v0.2.13
[INFO] [stderr]   Downloaded heck v0.3.0
[INFO] [stderr]   Downloaded syn v0.15.22
[INFO] [stderr]   Downloaded libc v0.2.44
[INFO] [stderr]   Downloaded structopt-derive v0.2.13
[INFO] [stderr]   Downloaded mediawiki_parser v0.4.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3ad45986c23a7e83670ae46f41151eabf2b7ec40fbabe379f1c75841c52a608b
[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" "3ad45986c23a7e83670ae46f41151eabf2b7ec40fbabe379f1c75841c52a608b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3ad45986c23a7e83670ae46f41151eabf2b7ec40fbabe379f1c75841c52a608b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ad45986c23a7e83670ae46f41151eabf2b7ec40fbabe379f1c75841c52a608b", kill_on_drop: false }`
[INFO] [stdout] 3ad45986c23a7e83670ae46f41151eabf2b7ec40fbabe379f1c75841c52a608b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 11ab3d6432a9098559b96a096720a14c3ed2244e860ae502af2725106930dd05
[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" "11ab3d6432a9098559b96a096720a14c3ed2244e860ae502af2725106930dd05", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.24
[INFO] [stderr]    Compiling serde v1.0.80
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling libc v0.2.44
[INFO] [stderr]    Compiling linked-hash-map v0.5.1
[INFO] [stderr]    Compiling unicode-segmentation v1.2.1
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking dtoa v0.4.3
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking lazy_static v1.2.0
[INFO] [stderr]    Compiling ryu v0.2.7
[INFO] [stderr]     Checking itoa v0.4.3
[INFO] [stderr]     Checking yaml-rust v0.4.2
[INFO] [stderr]    Compiling peg v0.5.7
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]     Checking colored v1.6.1
[INFO] [stderr]    Compiling heck v0.3.0
[INFO] [stderr]    Compiling quote v0.6.10
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]    Compiling syn v0.15.22
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking serde_yaml v0.7.5
[INFO] [stderr]     Checking serde_yaml v0.8.8
[INFO] [stderr]     Checking serde_json v1.0.33
[INFO] [stderr]    Compiling serde_derive v1.0.80
[INFO] [stderr]    Compiling structopt-derive v0.2.13
[INFO] [stderr]     Checking structopt v0.2.13
[INFO] [stderr]    Compiling mediawiki_parser v0.4.1
[INFO] [stderr]    Compiling mwparser_utils_derive v0.1.0 (https://github.com/vroland/mediawiki-parser-utils.git#d6705314)
[INFO] [stderr] error: failed to run custom build command for `mediawiki_parser v0.4.1`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/mediawiki_parser-b96e791914d08338/build-script-build` (exit code: 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/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/core/src/mem/mod.rs:671:9
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x55595e8e14e0 - std::backtrace_rs::backtrace::libunwind::trace::hb4de9797f80b7b8c
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stderr]      1:     0x55595e8e14e0 - std::backtrace_rs::backtrace::trace_unsynchronized::h59566d0bd20efff7
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x55595e8e14e0 - std::sys_common::backtrace::_print_fmt::hcfa5ce6be50275d4
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]      3:     0x55595e8e14e0 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hd8c307a38b9bab04
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]      4:     0x55595e8fea1c - core::fmt::write::h3868db8542c90941
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/core/src/fmt/mod.rs:1096:17
[INFO] [stderr]      5:     0x55595e8de5f2 - std::io::Write::write_fmt::hab90295d5a0f197d
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/std/src/io/mod.rs:1568:15
[INFO] [stderr]      6:     0x55595e8e3185 - std::sys_common::backtrace::_print::h19224910b8700cf1
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]      7:     0x55595e8e3185 - std::sys_common::backtrace::print::h25dedfa68c5fb84a
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]      8:     0x55595e8e3185 - std::panicking::default_hook::{{closure}}::h12c5765653a72a42
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/std/src/panicking.rs:208:50
[INFO] [stderr]      9:     0x55595e8e2ce3 - std::panicking::default_hook::he65cee71c4209f0c
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/std/src/panicking.rs:225:9
[INFO] [stderr]     10:     0x55595e8e3921 - std::panicking::rust_panic_with_hook::h01a674d863fe0d8a
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/std/src/panicking.rs:591:17
[INFO] [stderr]     11:     0x55595e8e3437 - std::panicking::begin_panic_handler::{{closure}}::h9b9fecf185178864
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/std/src/panicking.rs:495:13
[INFO] [stderr]     12:     0x55595e8e197c - std::sys_common::backtrace::__rust_end_short_backtrace::h57be46a42dc7f24b
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stderr]     13:     0x55595e8e33c9 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/std/src/panicking.rs:493:5
[INFO] [stderr]     14:     0x55595e8fd3e1 - core::panicking::panic_fmt::h20225113c4a2f8fd
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/core/src/panicking.rs:92:14
[INFO] [stderr]     15:     0x55595e8fd32d - core::panicking::panic::h35b77276aa4b0c12
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/core/src/panicking.rs:50:5
[INFO] [stderr]     16:     0x55595e8464ce - core::mem::uninitialized::hecf5bb3203f59ce3
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/core/src/mem/mod.rs:671:9
[INFO] [stderr]     17:     0x55595e8464ce - linked_hash_map::LinkedHashMap<K,V,S>::ensure_guard_node::he777da26eb0d14be
[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:     0x55595e846707 - linked_hash_map::LinkedHashMap<K,V,S>::insert::hd03b01aed1fb1ed5
[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:     0x55595e7b6f3d - <serde_yaml::ser::SerializeStruct as serde::ser::SerializeStruct>::serialize_field::hdb48e78297e5f2cc
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde_yaml-0.7.5/src/ser.rs:344:9
[INFO] [stderr]     20:     0x55595e8017c4 - <serde::private::ser::TaggedSerializer<S> as serde::ser::Serializer>::serialize_struct::h8421dae560554f1b
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde-1.0.80/src/private/ser.rs:302:14
[INFO] [stderr]     21:     0x55595e762131 - build_script_build::ast::_IMPL_SERIALIZE_FOR_Document::<impl serde::ser::Serialize for build_script_build::ast::Document>::serialize::hf6c242d6de05f3f2
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/mediawiki_parser-0.4.1/src/ast.rs:36:17
[INFO] [stderr]     22:     0x55595e8008b8 - serde::private::ser::serialize_tagged_newtype::hd0a1ff393028ded5
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde-1.0.80/src/private/ser.rs:37:5
[INFO] [stderr]     23:     0x55595e760712 - build_script_build::ast::_IMPL_SERIALIZE_FOR_Element::<impl serde::ser::Serialize for build_script_build::ast::Element>::serialize::hb7c42b5061094865
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/mediawiki_parser-0.4.1/src/ast.rs:12:17
[INFO] [stderr]     24:     0x55595e75d068 - serde::ser::impls::<impl serde::ser::Serialize for &T>::serialize::he825899681a37b01
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde-1.0.80/src/ser/impls.rs:373:17
[INFO] [stderr]     25:     0x55595e7b390a - serde_yaml::ser::to_yaml::h55c8f294a2dfa79b
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde_yaml-0.7.5/src/ser.rs:434:5
[INFO] [stderr]     26:     0x55595e7b3d0c - serde_yaml::ser::to_writer::h402fb75d570d21e2
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde_yaml-0.7.5/src/ser.rs:379:15
[INFO] [stderr]     27:     0x55595e7b3662 - serde_yaml::ser::to_vec::h6d62f28fc0ef9d2f
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde_yaml-0.7.5/src/ser.rs:396:5
[INFO] [stderr]     28:     0x55595e7b3b1c - serde_yaml::ser::to_string::ha106d3bf1b5939d0
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde_yaml-0.7.5/src/ser.rs:408:26
[INFO] [stderr]     29:     0x55595e7ea2b3 - build_script_build::Test::write_code::hd34eb1eec1cb3549
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/mediawiki_parser-0.4.1/build.rs:70:13
[INFO] [stderr]     30:     0x55595e7eab44 - build_script_build::generate_tests::h7e273f1cd6b07e03
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/mediawiki_parser-0.4.1/build.rs:104:9
[INFO] [stderr]     31:     0x55595e7ead0d - build_script_build::main::h55824c14178829ab
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/mediawiki_parser-0.4.1/build.rs:110:5
[INFO] [stderr]     32:     0x55595e7fa49b - core::ops::function::FnOnce::call_once::h476f5ee5968cf397
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/core/src/ops/function.rs:227:5
[INFO] [stderr]     33:     0x55595e7f9eae - std::sys_common::backtrace::__rust_begin_short_backtrace::h837dd54910a51f02
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stderr]     34:     0x55595e7ec7a1 - std::rt::lang_start::{{closure}}::hf37f6b416dc7c083
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/std/src/rt.rs:66:18
[INFO] [stderr]     35:     0x55595e8e3d47 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h2c4fd7d4128112a8
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/core/src/ops/function.rs:259:13
[INFO] [stderr]     36:     0x55595e8e3d47 - std::panicking::try::do_call::h41fb7dbbbe7bece6
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/std/src/panicking.rs:379:40
[INFO] [stderr]     37:     0x55595e8e3d47 - std::panicking::try::hd38008ccba72bce1
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/std/src/panicking.rs:343:19
[INFO] [stderr]     38:     0x55595e8e3d47 - std::panic::catch_unwind::h057e765cd60f2d13
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/std/src/panic.rs:431:14
[INFO] [stderr]     39:     0x55595e8e3d47 - std::rt::lang_start_internal::hdb9d0b9d2cdcda8b
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/std/src/rt.rs:51:25
[INFO] [stderr]     40:     0x55595e7ec777 - std::rt::lang_start::hc23890ad72498116
[INFO] [stderr]                                  at /rustc/36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923/library/std/src/rt.rs:65:5
[INFO] [stderr]     41:     0x55595e7ec46a - main
[INFO] [stderr]     42:     0x7fe4c754f0b3 - __libc_start_main
[INFO] [stderr]     43:     0x55595e7590ae - _start
[INFO] [stderr]     44:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "11ab3d6432a9098559b96a096720a14c3ed2244e860ae502af2725106930dd05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11ab3d6432a9098559b96a096720a14c3ed2244e860ae502af2725106930dd05", kill_on_drop: false }`
[INFO] [stdout] 11ab3d6432a9098559b96a096720a14c3ed2244e860ae502af2725106930dd05