[INFO] fetching crate mdbook-bibfile-referencing 0.2.0...
[INFO] testing mdbook-bibfile-referencing-0.2.0 against master#6c20ab744b0f82646d90ce9d25894823abc9c669 for pr-99093
[INFO] extracting crate mdbook-bibfile-referencing 0.2.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate mdbook-bibfile-referencing 0.2.0 on toolchain 6c20ab744b0f82646d90ce9d25894823abc9c669
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6c20ab744b0f82646d90ce9d25894823abc9c669" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mdbook-bibfile-referencing 0.2.0
[INFO] finished tweaking crates.io crate mdbook-bibfile-referencing 0.2.0
[INFO] tweaked toml for crates.io crate mdbook-bibfile-referencing 0.2.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate mdbook-bibfile-referencing 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6c20ab744b0f82646d90ce9d25894823abc9c669" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pandoc v0.8.5
[INFO] [stderr]   Downloaded open v1.7.0
[INFO] [stderr]   Downloaded handlebars v4.1.0
[INFO] [stderr]   Downloaded mdbook v0.4.10
[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:ecb52c4cf6672b83cc996368a05b4a059042425f2b6ba9cd23a06cdead5d8d70" "/opt/rustwide/cargo-home/bin/cargo" "+6c20ab744b0f82646d90ce9d25894823abc9c669" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 178a19c3fbb5246097cba3c3270b673560a79ad851366a422bad27d75950297c
[INFO] running `Command { std: "docker" "start" "-a" "178a19c3fbb5246097cba3c3270b673560a79ad851366a422bad27d75950297c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "178a19c3fbb5246097cba3c3270b673560a79ad851366a422bad27d75950297c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "178a19c3fbb5246097cba3c3270b673560a79ad851366a422bad27d75950297c", kill_on_drop: false }`
[INFO] [stdout] 178a19c3fbb5246097cba3c3270b673560a79ad851366a422bad27d75950297c
[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:ecb52c4cf6672b83cc996368a05b4a059042425f2b6ba9cd23a06cdead5d8d70" "/opt/rustwide/cargo-home/bin/cargo" "+6c20ab744b0f82646d90ce9d25894823abc9c669" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] edd486ed049954d1e1112cc61567487f293acab544deded473a5a0f6b9e4ca2e
[INFO] running `Command { std: "docker" "start" "-a" "edd486ed049954d1e1112cc61567487f293acab544deded473a5a0f6b9e4ca2e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling version_check v0.9.3
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[INFO] [stderr]    Compiling pest_meta v2.1.3
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[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling aho-corasick v0.7.18
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[INFO] [stderr]    Compiling regex v1.5.6
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[INFO] [stderr]    Compiling pest_generator v2.1.3
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[INFO] [stderr]    Compiling pest_derive v2.1.0
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[INFO] [stderr]    Compiling handlebars v4.1.0
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[INFO] [stderr]    Compiling mdbook v0.4.10
[INFO] [stderr]    Compiling mdbook-bibfile-referencing v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.49s
[INFO] running `Command { std: "docker" "inspect" "edd486ed049954d1e1112cc61567487f293acab544deded473a5a0f6b9e4ca2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "edd486ed049954d1e1112cc61567487f293acab544deded473a5a0f6b9e4ca2e", kill_on_drop: false }`
[INFO] [stdout] edd486ed049954d1e1112cc61567487f293acab544deded473a5a0f6b9e4ca2e
[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:ecb52c4cf6672b83cc996368a05b4a059042425f2b6ba9cd23a06cdead5d8d70" "/opt/rustwide/cargo-home/bin/cargo" "+6c20ab744b0f82646d90ce9d25894823abc9c669" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b18b1450de222121dc6250afba22ef4584b5ebaa6bed73a15c23e88cb8daadf7
[INFO] running `Command { std: "docker" "start" "-a" "b18b1450de222121dc6250afba22ef4584b5ebaa6bed73a15c23e88cb8daadf7", kill_on_drop: false }`
[INFO] [stderr]    Compiling mdbook-bibfile-referencing v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.37s
[INFO] running `Command { std: "docker" "inspect" "b18b1450de222121dc6250afba22ef4584b5ebaa6bed73a15c23e88cb8daadf7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b18b1450de222121dc6250afba22ef4584b5ebaa6bed73a15c23e88cb8daadf7", kill_on_drop: false }`
[INFO] [stdout] b18b1450de222121dc6250afba22ef4584b5ebaa6bed73a15c23e88cb8daadf7
[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:ecb52c4cf6672b83cc996368a05b4a059042425f2b6ba9cd23a06cdead5d8d70" "/opt/rustwide/cargo-home/bin/cargo" "+6c20ab744b0f82646d90ce9d25894823abc9c669" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 08800048e1ea86256df9fb1565d78709b793ae7fd6a9ad53915e7ad26062d855
[INFO] running `Command { std: "docker" "start" "-a" "08800048e1ea86256df9fb1565d78709b793ae7fd6a9ad53915e7ad26062d855", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.20s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/mdbook_bibfile_referencing-c8a34d41ce0d4f18)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test::test_book ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- test::test_book stdout ----
[INFO] [stdout] thread 'test::test_book' panicked at 'called `Result::unwrap()` on an `Err` value: Failed to call pandoc - is it installed?
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]     No such file or directory (os error 2)
[INFO] [stdout] 
[INFO] [stdout] Stack backtrace:
[INFO] [stdout]    0: <E as anyhow::context::ext::StdError>::ext_context
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/anyhow-1.0.57/src/context.rs:27:29
[INFO] [stdout]    1: anyhow::context::<impl anyhow::Context<T,E> for core::result::Result<T,E>>::context::{{closure}}
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/anyhow-1.0.57/src/context.rs:50:30
[INFO] [stdout]    2: core::result::Result<T,E>::map_err
[INFO] [stdout]              at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/core/src/result.rs:855:27
[INFO] [stdout]    3: anyhow::context::<impl anyhow::Context<T,E> for core::result::Result<T,E>>::context
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/anyhow-1.0.57/src/context.rs:50:9
[INFO] [stdout]    4: mdbook_bibfile_referencing::builtin_citeproc_support
[INFO] [stdout]              at ./src/main.rs:144:18
[INFO] [stdout]    5: mdbook_bibfile_referencing::test::test_book
[INFO] [stdout]              at ./src/test.rs:16:9
[INFO] [stdout]    6: mdbook_bibfile_referencing::test::test_book::{{closure}}
[INFO] [stdout]              at ./src/test.rs:13:1
[INFO] [stdout]    7: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/core/src/ops/function.rs:248:5
[INFO] [stdout]    8: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/core/src/ops/function.rs:248:5
[INFO] [stdout]    9: test::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/test/src/lib.rs:572:5
[INFO] [stdout]   10: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
[INFO] [stdout]              at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/alloc/src/boxed.rs:1934:9
[INFO] [stdout]   11: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/core/src/panic/unwind_safe.rs:271:9
[INFO] [stdout]   12: std::panicking::try::do_call
[INFO] [stdout]              at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/std/src/panicking.rs:492:40
[INFO] [stdout]   13: std::panicking::try
[INFO] [stdout]              at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/std/src/panicking.rs:456:19
[INFO] [stdout]   14: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/std/src/panic.rs:137:14
[INFO] [stdout]   15: test::run_test_in_process
[INFO] [stdout]              at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/test/src/lib.rs:595:18
[INFO] [stdout]   16: test::run_test::run_test_inner::{{closure}}
[INFO] [stdout]              at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/test/src/lib.rs:489:39
[INFO] [stdout]   17: test::run_test::run_test_inner::{{closure}}
[INFO] [stdout]              at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/test/src/lib.rs:516:37
[INFO] [stdout]   18: std::sys_common::backtrace::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/std/src/sys_common/backtrace.rs:122:18
[INFO] [stdout]   19: std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}
[INFO] [stdout]              at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/std/src/thread/mod.rs:505:17
[INFO] [stdout]   20: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/core/src/panic/unwind_safe.rs:271:9
[INFO] [stdout]   21: std::panicking::try::do_call
[INFO] [stdout]              at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/std/src/panicking.rs:492:40
[INFO] [stdout]   22: std::panicking::try
[INFO] [stdout]              at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/std/src/panicking.rs:456:19
[INFO] [stdout]   23: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/std/src/panic.rs:137:14
[INFO] [stdout]   24: std::thread::Builder::spawn_unchecked_::{{closure}}
[INFO] [stdout]              at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/std/src/thread/mod.rs:504:30
[INFO] [stdout]   25: core::ops::function::FnOnce::call_once{{vtable.shim}}
[INFO] [stdout]              at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/core/src/ops/function.rs:248:5
[INFO] [stdout]   26: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
[INFO] [stdout]              at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/alloc/src/boxed.rs:1934:9
[INFO] [stdout]   27: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
[INFO] [stdout]              at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/alloc/src/boxed.rs:1934:9
[INFO] [stdout]   28: std::sys::unix::thread::Thread::new::thread_start
[INFO] [stdout]              at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/std/src/sys/unix/thread.rs:108:17
[INFO] [stdout]   29: start_thread
[INFO] [stdout]   30: clone', src/test.rs:16:36
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x557f1e04d240 - std::backtrace_rs::backtrace::libunwind::trace::h5cec5ee957007983
[INFO] [stdout]                                at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    1:     0x557f1e04d240 - std::backtrace_rs::backtrace::trace_unsynchronized::h3912ce6f9cd18e05
[INFO] [stdout]                                at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x557f1e04d240 - std::sys_common::backtrace::_print_fmt::h0b3fbca24cbc1b41
[INFO] [stdout]                                at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/std/src/sys_common/backtrace.rs:66:5
[INFO] [stdout]    3:     0x557f1e04d240 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hc7b35b5b2e247560
[INFO] [stdout]                                at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/std/src/sys_common/backtrace.rs:45:22
[INFO] [stdout]    4:     0x557f1e0709ec - core::fmt::write::h2d806358caa3f689
[INFO] [stdout]                                at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/core/src/fmt/mod.rs:1198:17
[INFO] [stdout]    5:     0x557f1e0499e5 - std::io::Write::write_fmt::hf9535056206ea98c
[INFO] [stdout]                                at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/std/src/io/mod.rs:1672:15
[INFO] [stdout]    6:     0x557f1e04ec81 - std::sys_common::backtrace::_print::h51a933838ceebaa0
[INFO] [stdout]                                at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/std/src/sys_common/backtrace.rs:48:5
[INFO] [stdout]    7:     0x557f1e04ec81 - std::sys_common::backtrace::print::hc53e3ead445b016c
[INFO] [stdout]                                at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/std/src/sys_common/backtrace.rs:35:9
[INFO] [stdout]    8:     0x557f1e04ec81 - std::panicking::default_hook::{{closure}}::hbc895cb9b7ebea62
[INFO] [stdout]                                at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/std/src/panicking.rs:295:22
[INFO] [stdout]    9:     0x557f1e04e8d6 - std::panicking::default_hook::h664409a8548f2cc0
[INFO] [stdout]                                at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/std/src/panicking.rs:311:9
[INFO] [stdout]   10:     0x557f1e04f323 - std::panicking::rust_panic_with_hook::h947033eb042c9758
[INFO] [stdout]                                at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/std/src/panicking.rs:698:17
[INFO] [stdout]   11:     0x557f1e04f217 - std::panicking::begin_panic_handler::{{closure}}::haef8fa2237a58bae
[INFO] [stdout]                                at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/std/src/panicking.rs:588:13
[INFO] [stdout]   12:     0x557f1e04d714 - std::sys_common::backtrace::__rust_end_short_backtrace::hadb599ff5bdd6123
[INFO] [stdout]                                at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/std/src/sys_common/backtrace.rs:138:18
[INFO] [stdout]   13:     0x557f1e04ef42 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/std/src/panicking.rs:584:5
[INFO] [stdout]   14:     0x557f1dfbbd33 - core::panicking::panic_fmt::hcf9e3bddea69ce9b
[INFO] [stdout]                                at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/core/src/panicking.rs:142:14
[INFO] [stdout]   15:     0x557f1dfbbe23 - core::result::unwrap_failed::h19364dd252eca818
[INFO] [stdout]                                at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/core/src/result.rs:1805:5
[INFO] [stdout]   16:     0x557f1dfc031a - core::result::Result<T,E>::unwrap::hbcbf237b76a7070d
[INFO] [stdout]                                at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/core/src/result.rs:1098:23
[INFO] [stdout]   17:     0x557f1dfbeb98 - mdbook_bibfile_referencing::test::test_book::h8a71a867a8938135
[INFO] [stdout]                                at /opt/rustwide/workdir/src/test.rs:16:9
[INFO] [stdout]   18:     0x557f1dfbeb5a - mdbook_bibfile_referencing::test::test_book::{{closure}}::h268679fc97604316
[INFO] [stdout]                                at /opt/rustwide/workdir/src/test.rs:13:1
[INFO] [stdout]   19:     0x557f1dfbd67e - core::ops::function::FnOnce::call_once::h55c5d7c3435e1442
[INFO] [stdout]                                at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/core/src/ops/function.rs:248:5
[INFO] [stdout]   20:     0x557f1dff6423 - core::ops::function::FnOnce::call_once::ha891352f3b456c56
[INFO] [stdout]                                at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/core/src/ops/function.rs:248:5
[INFO] [stdout]   21:     0x557f1dff6423 - test::__rust_begin_short_backtrace::he74ff8fcbc6e1bf3
[INFO] [stdout]                                at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/test/src/lib.rs:572:5
[INFO] [stdout]   22:     0x557f1dff51ac - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::ha7d4b5f90d4ff94a
[INFO] [stdout]                                at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/alloc/src/boxed.rs:1934:9
[INFO] [stdout]   23:     0x557f1dff51ac - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hff61630ec6da6d9c
[INFO] [stdout]                                at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/core/src/panic/unwind_safe.rs:271:9
[INFO] [stdout]   24:     0x557f1dff51ac - std::panicking::try::do_call::h25bb9ce20414cc9e
[INFO] [stdout]                                at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/std/src/panicking.rs:492:40
[INFO] [stdout]   25:     0x557f1dff51ac - std::panicking::try::h879f2193a4184aae
[INFO] [stdout]                                at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/std/src/panicking.rs:456:19
[INFO] [stdout]   26:     0x557f1dff51ac - std::panic::catch_unwind::hef4ed77ae7d42ef7
[INFO] [stdout]                                at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/std/src/panic.rs:137:14
[INFO] [stdout]   27:     0x557f1dff51ac - test::run_test_in_process::h45393ffc6f2bda93
[INFO] [stdout]                                at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/test/src/lib.rs:595:18
[INFO] [stdout]   28:     0x557f1dff51ac - test::run_test::run_test_inner::{{closure}}::h374abe809bc519ae
[INFO] [stdout]                                at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/test/src/lib.rs:489:39
[INFO] [stdout]   29:     0x557f1dfc0dec - test::run_test::run_test_inner::{{closure}}::h8d8ea5cb4864a81a
[INFO] [stdout]                                at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/test/src/lib.rs:516:37
[INFO] [stdout]   30:     0x557f1dfc0dec - std::sys_common::backtrace::__rust_begin_short_backtrace::hae3d1543273744a4
[INFO] [stdout]                                at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/std/src/sys_common/backtrace.rs:122:18
[INFO] [stdout]   31:     0x557f1dfc6d2f - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h9979fffcdc02fb98
[INFO] [stdout]                                at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/std/src/thread/mod.rs:505:17
[INFO] [stdout]   32:     0x557f1dfc6d2f - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h43a127bea61ae81a
[INFO] [stdout]                                at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/core/src/panic/unwind_safe.rs:271:9
[INFO] [stdout]   33:     0x557f1dfc6d2f - std::panicking::try::do_call::h1dd85209b01bc737
[INFO] [stdout]                                at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/std/src/panicking.rs:492:40
[INFO] [stdout]   34:     0x557f1dfc6d2f - std::panicking::try::h308a79a6f4b54c2d
[INFO] [stdout]                                at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/std/src/panicking.rs:456:19
[INFO] [stdout]   35:     0x557f1dfc6d2f - std::panic::catch_unwind::h5cf0d96d2eddcf0c
[INFO] [stdout]                                at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/std/src/panic.rs:137:14
[INFO] [stdout]   36:     0x557f1dfc6d2f - std::thread::Builder::spawn_unchecked_::{{closure}}::hcc55c81e5bc7e1fc
[INFO] [stdout]                                at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/std/src/thread/mod.rs:504:30
[INFO] [stdout]   37:     0x557f1dfc6d2f - core::ops::function::FnOnce::call_once{{vtable.shim}}::h53c6f5ca915705b9
[INFO] [stdout]                                at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/core/src/ops/function.rs:248:5
[INFO] [stdout]   38:     0x557f1e0539f3 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h8644474d961275e7
[INFO] [stdout]                                at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/alloc/src/boxed.rs:1934:9
[INFO] [stdout]   39:     0x557f1e0539f3 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hfd68b25ee06fd9db
[INFO] [stdout]                                at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/alloc/src/boxed.rs:1934:9
[INFO] [stdout]   40:     0x557f1e0539f3 - std::sys::unix::thread::Thread::new::thread_start::heb02daf84d178e59
[INFO] [stdout]                                at /rustc/6c20ab744b0f82646d90ce9d25894823abc9c669/library/std/src/sys/unix/thread.rs:108:17
[INFO] [stdout]   41:     0x7f59e49f9609 - start_thread
[INFO] [stdout]   42:     0x7f59e47c9133 - clone
[INFO] [stdout]   43:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     test::test_book
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.59s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--bin mdbook-bibfile-referencing'
[INFO] running `Command { std: "docker" "inspect" "08800048e1ea86256df9fb1565d78709b793ae7fd6a9ad53915e7ad26062d855", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08800048e1ea86256df9fb1565d78709b793ae7fd6a9ad53915e7ad26062d855", kill_on_drop: false }`
[INFO] [stdout] 08800048e1ea86256df9fb1565d78709b793ae7fd6a9ad53915e7ad26062d855