[INFO] fetching crate serial_enumerate 0.1.0...
[INFO] testing serial_enumerate-0.1.0 against 1.75.0 for beta-1.76-1
[INFO] extracting crate serial_enumerate 0.1.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate serial_enumerate 0.1.0 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serial_enumerate 0.1.0
[INFO] finished tweaking crates.io crate serial_enumerate 0.1.0
[INFO] tweaked toml for crates.io crate serial_enumerate 0.1.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded error-chain v0.5.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 64fabd73dc5737b5b5241957435011eb41569799295c3f0fa04f710e5f7722e9
[INFO] running `Command { std: "docker" "start" "-a" "64fabd73dc5737b5b5241957435011eb41569799295c3f0fa04f710e5f7722e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "64fabd73dc5737b5b5241957435011eb41569799295c3f0fa04f710e5f7722e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64fabd73dc5737b5b5241957435011eb41569799295c3f0fa04f710e5f7722e9", kill_on_drop: false }`
[INFO] [stdout] 64fabd73dc5737b5b5241957435011eb41569799295c3f0fa04f710e5f7722e9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 74621c3175021b8948fc036abeb347b95ff4e93771b24e763d56501854ccba9d
[INFO] running `Command { std: "docker" "start" "-a" "74621c3175021b8948fc036abeb347b95ff4e93771b24e763d56501854ccba9d", kill_on_drop: false }`
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling libc v0.2.151
[INFO] [stderr]    Compiling winapi v0.2.8
[INFO] [stderr]    Compiling backtrace v0.2.3
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling rustc-demangle v0.1.23
[INFO] [stderr]    Compiling dbghelp-sys v0.2.0
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]    Compiling backtrace-sys v0.1.37
[INFO] [stderr]    Compiling error-chain v0.5.0
[INFO] [stderr]    Compiling serial_enumerate v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.11s
[INFO] running `Command { std: "docker" "inspect" "74621c3175021b8948fc036abeb347b95ff4e93771b24e763d56501854ccba9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "74621c3175021b8948fc036abeb347b95ff4e93771b24e763d56501854ccba9d", kill_on_drop: false }`
[INFO] [stdout] 74621c3175021b8948fc036abeb347b95ff4e93771b24e763d56501854ccba9d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ea866645f4c889d48025eed8305ad8956c54585d157e3845fe78b2ac9669a3a8
[INFO] running `Command { std: "docker" "start" "-a" "ea866645f4c889d48025eed8305ad8956c54585d157e3845fe78b2ac9669a3a8", kill_on_drop: false }`
[INFO] [stderr]    Compiling serial_enumerate v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.21s
[INFO] running `Command { std: "docker" "inspect" "ea866645f4c889d48025eed8305ad8956c54585d157e3845fe78b2ac9669a3a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea866645f4c889d48025eed8305ad8956c54585d157e3845fe78b2ac9669a3a8", kill_on_drop: false }`
[INFO] [stdout] ea866645f4c889d48025eed8305ad8956c54585d157e3845fe78b2ac9669a3a8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f23453d094b3579ba301a0a57e482e28c6ea196ce37b0710a0bcf28808a7acc0
[INFO] running `Command { std: "docker" "start" "-a" "f23453d094b3579ba301a0a57e482e28c6ea196ce37b0710a0bcf28808a7acc0", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/serial_enumerate-dd594961f8c42a3b)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests serial_enumerate
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 4) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 4) stdout ----
[INFO] [stdout] Test executable failed (exit status: 101).
[INFO] [stdout] 
[INFO] [stdout] stderr:
[INFO] [stdout] thread 'main' panicked at src/lib.rs:5:58:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: Error(Msg("/dev/serial not found"), (Some(Os { code: 2, kind: NotFound, message: "No such file or directory" }), Some(stack backtrace:
[INFO] [stdout]    0:     0x55b95b1a07c0 - backtrace::backtrace::libunwind::trace::h99641ef27a230b69
[INFO] [stdout]                         at src/backtrace/libunwind.rs:54
[INFO] [stdout]                          - backtrace::backtrace::trace::hb307364866bacfe6
[INFO] [stdout]                         at src/backtrace/mod.rs:70
[INFO] [stdout]    1:     0x55b95b1a6ab8 - backtrace::capture::Backtrace::new::h74888ba5338089d1
[INFO] [stdout]                         at /opt/rustwide/target/debug/build/backtrace-a4d1a720ffd46b52/out/capture.rs:79
[INFO] [stdout]    2:     0x55b95b19ce21 - error_chain::make_backtrace::h40c41ae0a7e59db4
[INFO] [stdout]                         at src/lib.rs:684
[INFO] [stdout]    3:     0x55b95b19c016 - <core::result::Result<T,E> as serial_enumerate::errors::ChainErr<T>>::chain_err::{{closure}}::{{closure}}::hf63f0bf5b01b4de6
[INFO] [stdout]                         at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/error-chain-0.5.0/src/lib.rs:504
[INFO] [stdout]    4:     0x55b95b198653 - core::option::Option<T>::unwrap_or_else::h29bf8b45d56e46b4
[INFO] [stdout]                         at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/option.rs:976
[INFO] [stdout]    5:     0x55b95b19bb78 - <core::result::Result<T,E> as serial_enumerate::errors::ChainErr<T>>::chain_err::{{closure}}::h86a8f58bbcd532c7
[INFO] [stdout]                         at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/error-chain-0.5.0/src/lib.rs:503
[INFO] [stdout]    6:     0x55b95b198857 - core::result::Result<T,E>::map_err::h010df3b332d4297b
[INFO] [stdout]                         at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/result.rs:829
[INFO] [stdout]    7:     0x55b95b19b6d1 - <core::result::Result<T,E> as serial_enumerate::errors::ChainErr<T>>::chain_err::h00905089c50f992c
[INFO] [stdout]                         at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/error-chain-0.5.0/src/lib.rs:500
[INFO] [stdout]    8:     0x55b95b19adc8 - serial_enumerate::enumerate_serial_ports::hbdbd564456c9febc
[INFO] [stdout]                         at src/lib.rs:46
[INFO] [stdout]    9:     0x55b95b197641 - rust_out::main::_doctest_main_src_lib_rs_4_0::h2566ed224124dc50
[INFO] [stdout]   10:     0x55b95b197625 - rust_out::main::hc20c0d07e2402830
[INFO] [stdout]   11:     0x55b95b197072 - core::ops::function::FnOnce::call_once::hbc459743598298c4
[INFO] [stdout]   12:     0x55b95b196e55 - std::sys_common::backtrace::__rust_begin_short_backtrace::h62debe7d3058b76a
[INFO] [stdout]   13:     0x55b95b196ea8 - std::rt::lang_start::{{closure}}::h8f486f3e1e6418b2
[INFO] [stdout]   14:     0x55b95b1e5e36 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hd95060ecd5e1ca24
[INFO] [stdout]                         at library/core/src/ops/function.rs:284
[INFO] [stdout]                          - std::panicking::try::do_call::h6e8cf51db32a6e4b
[INFO] [stdout]                         at library/std/src/panicking.rs:552
[INFO] [stdout]                          - std::panicking::try::h3a52eefe24fe3c29
[INFO] [stdout]                         at library/std/src/panicking.rs:516
[INFO] [stdout]                          - std::panic::catch_unwind::h24c28c23c02c3841
[INFO] [stdout]                         at library/std/src/panic.rs:142
[INFO] [stdout]                          - std::rt::lang_start_internal::{{closure}}::h705d3c9cbc06ef47
[INFO] [stdout]                         at library/std/src/rt.rs:148
[INFO] [stdout]                          - std::panicking::try::do_call::ha21f52ba13158470
[INFO] [stdout]                         at library/std/src/panicking.rs:552
[INFO] [stdout]                          - std::panicking::try::h5581346bf6aeb1f8
[INFO] [stdout]                         at library/std/src/panicking.rs:516
[INFO] [stdout]                          - std::panic::catch_unwind::h7919645a6b72e25b
[INFO] [stdout]                         at library/std/src/panic.rs:142
[INFO] [stdout]                          - std::rt::lang_start_internal::h12de51168669836e
[INFO] [stdout]                         at library/std/src/rt.rs:148
[INFO] [stdout]   15:     0x55b95b196e86 - std::rt::lang_start::h2c48f91a7bf85629
[INFO] [stdout]   16:     0x55b95b197824 - main
[INFO] [stdout]   17:     0x7f03785eed8f - <unknown>
[INFO] [stdout]   18:     0x7f03785eee3f - __libc_start_main
[INFO] [stdout]   19:     0x55b95b196ac4 - _start
[INFO] [stdout]   20:                0x0 - <unknown>)))
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x55b95b1ea9cc - std::backtrace_rs::backtrace::libunwind::trace::ha637c64ce894333a
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
[INFO] [stdout]    1:     0x55b95b1ea9cc - std::backtrace_rs::backtrace::trace_unsynchronized::h47f62dea28e0c88d
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x55b95b1ea9cc - std::sys_common::backtrace::_print_fmt::h9eef0abe20ede486
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stdout]    3:     0x55b95b1ea9cc - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hed7f999df88cc644
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stdout]    4:     0x55b95b20ab80 - core::fmt::rt::Argument::fmt::h1539a9308b8d058d
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/fmt/rt.rs:142:9
[INFO] [stdout]    5:     0x55b95b20ab80 - core::fmt::write::h3a39390d8560d9c9
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/fmt/mod.rs:1120:17
[INFO] [stdout]    6:     0x55b95b1e8c8f - std::io::Write::write_fmt::h5fc9997dfe05f882
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/io/mod.rs:1762:15
[INFO] [stdout]    7:     0x55b95b1ea7b4 - std::sys_common::backtrace::_print::h894006fb5c6f3d45
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    8:     0x55b95b1ea7b4 - std::sys_common::backtrace::print::h23a2d212c6fff936
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    9:     0x55b95b1ebcc7 - std::panicking::default_hook::{{closure}}::h8a1d2ee00185001a
[INFO] [stdout]   10:     0x55b95b1eba2f - std::panicking::default_hook::h6038f2eba384e475
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:292:9
[INFO] [stdout]   11:     0x55b95b1ec148 - std::panicking::rust_panic_with_hook::h2b5517d590cab22e
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:779:13
[INFO] [stdout]   12:     0x55b95b1ec02e - std::panicking::begin_panic_handler::{{closure}}::h233112c06e0ef43e
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:657:13
[INFO] [stdout]   13:     0x55b95b1eae96 - std::sys_common::backtrace::__rust_end_short_backtrace::h6e893f24d7ebbff8
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/sys_common/backtrace.rs:170:18
[INFO] [stdout]   14:     0x55b95b1ebd92 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:645:5
[INFO] [stdout]   15:     0x55b95b1963a5 - core::panicking::panic_fmt::hbf0e066aabfa482c
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/panicking.rs:72:14
[INFO] [stdout]   16:     0x55b95b196803 - core::result::unwrap_failed::hddb4fea594200c52
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/result.rs:1653:5
[INFO] [stdout]   17:     0x55b95b19728e - core::result::Result<T,E>::unwrap::h792c6b3b108b8225
[INFO] [stdout]   18:     0x55b95b197658 - rust_out::main::_doctest_main_src_lib_rs_4_0::h2566ed224124dc50
[INFO] [stdout]   19:     0x55b95b197626 - rust_out::main::hc20c0d07e2402830
[INFO] [stdout]   20:     0x55b95b197073 - core::ops::function::FnOnce::call_once::hbc459743598298c4
[INFO] [stdout]   21:     0x55b95b196e56 - std::sys_common::backtrace::__rust_begin_short_backtrace::h62debe7d3058b76a
[INFO] [stdout]   22:     0x55b95b196ea9 - std::rt::lang_start::{{closure}}::h8f486f3e1e6418b2
[INFO] [stdout]   23:     0x55b95b1e5e37 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hd95060ecd5e1ca24
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/ops/function.rs:284:13
[INFO] [stdout]   24:     0x55b95b1e5e37 - std::panicking::try::do_call::h6e8cf51db32a6e4b
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:552:40
[INFO] [stdout]   25:     0x55b95b1e5e37 - std::panicking::try::h3a52eefe24fe3c29
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:516:19
[INFO] [stdout]   26:     0x55b95b1e5e37 - std::panic::catch_unwind::h24c28c23c02c3841
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panic.rs:142:14
[INFO] [stdout]   27:     0x55b95b1e5e37 - std::rt::lang_start_internal::{{closure}}::h705d3c9cbc06ef47
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/rt.rs:148:48
[INFO] [stdout]   28:     0x55b95b1e5e37 - std::panicking::try::do_call::ha21f52ba13158470
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:552:40
[INFO] [stdout]   29:     0x55b95b1e5e37 - std::panicking::try::h5581346bf6aeb1f8
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:516:19
[INFO] [stdout]   30:     0x55b95b1e5e37 - std::panic::catch_unwind::h7919645a6b72e25b
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panic.rs:142:14
[INFO] [stdout]   31:     0x55b95b1e5e37 - std::rt::lang_start_internal::h12de51168669836e
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/rt.rs:148:20
[INFO] [stdout]   32:     0x55b95b196e87 - std::rt::lang_start::h2c48f91a7bf85629
[INFO] [stdout]   33:     0x55b95b197825 - main
[INFO] [stdout]   34:     0x7f03785eed90 - <unknown>
[INFO] [stdout]   35:     0x7f03785eee40 - __libc_start_main
[INFO] [stdout]   36:     0x55b95b196ac5 - _start
[INFO] [stdout]   37:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 4)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.26s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "f23453d094b3579ba301a0a57e482e28c6ea196ce37b0710a0bcf28808a7acc0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f23453d094b3579ba301a0a57e482e28c6ea196ce37b0710a0bcf28808a7acc0", kill_on_drop: false }`
[INFO] [stdout] f23453d094b3579ba301a0a57e482e28c6ea196ce37b0710a0bcf28808a7acc0
[INFO] testing serial_enumerate-0.1.0 against beta-2023-12-22 for beta-1.76-1
[INFO] extracting crate serial_enumerate 0.1.0 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate serial_enumerate 0.1.0 on toolchain beta-2023-12-22
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serial_enumerate 0.1.0
[INFO] finished tweaking crates.io crate serial_enumerate 0.1.0
[INFO] tweaked toml for crates.io crate serial_enumerate 0.1.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9cbcb9d6f7c4ed6eaa18a2f051c58af485e8c26f7a4eec0c116bb93744b0a2c9
[INFO] running `Command { std: "docker" "start" "-a" "9cbcb9d6f7c4ed6eaa18a2f051c58af485e8c26f7a4eec0c116bb93744b0a2c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9cbcb9d6f7c4ed6eaa18a2f051c58af485e8c26f7a4eec0c116bb93744b0a2c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9cbcb9d6f7c4ed6eaa18a2f051c58af485e8c26f7a4eec0c116bb93744b0a2c9", kill_on_drop: false }`
[INFO] [stdout] 9cbcb9d6f7c4ed6eaa18a2f051c58af485e8c26f7a4eec0c116bb93744b0a2c9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6189c617859efcbd93e98870ef206fb5b0e44bdb0a20c2dad55f0337e3d6e778
[INFO] running `Command { std: "docker" "start" "-a" "6189c617859efcbd93e98870ef206fb5b0e44bdb0a20c2dad55f0337e3d6e778", kill_on_drop: false }`
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling libc v0.2.151
[INFO] [stderr]    Compiling winapi v0.2.8
[INFO] [stderr]    Compiling backtrace v0.2.3
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling rustc-demangle v0.1.23
[INFO] [stderr]    Compiling dbghelp-sys v0.2.0
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]    Compiling backtrace-sys v0.1.37
[INFO] [stderr]    Compiling error-chain v0.5.0
[INFO] [stderr]    Compiling serial_enumerate v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.08s
[INFO] running `Command { std: "docker" "inspect" "6189c617859efcbd93e98870ef206fb5b0e44bdb0a20c2dad55f0337e3d6e778", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6189c617859efcbd93e98870ef206fb5b0e44bdb0a20c2dad55f0337e3d6e778", kill_on_drop: false }`
[INFO] [stdout] 6189c617859efcbd93e98870ef206fb5b0e44bdb0a20c2dad55f0337e3d6e778
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 18431ef91a78cd228e017cfd56648c3ceb4a288258b387ed77d09f185a4f05a4
[INFO] running `Command { std: "docker" "start" "-a" "18431ef91a78cd228e017cfd56648c3ceb4a288258b387ed77d09f185a4f05a4", kill_on_drop: false }`
[INFO] [stderr]    Compiling serial_enumerate v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.21s
[INFO] running `Command { std: "docker" "inspect" "18431ef91a78cd228e017cfd56648c3ceb4a288258b387ed77d09f185a4f05a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18431ef91a78cd228e017cfd56648c3ceb4a288258b387ed77d09f185a4f05a4", kill_on_drop: false }`
[INFO] [stdout] 18431ef91a78cd228e017cfd56648c3ceb4a288258b387ed77d09f185a4f05a4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e8aad45c28e116297c85c5c6cbd324fb3edff2cdb5dd1ee23882a63fe5be9253
[INFO] running `Command { std: "docker" "start" "-a" "e8aad45c28e116297c85c5c6cbd324fb3edff2cdb5dd1ee23882a63fe5be9253", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/serial_enumerate-a501a91985e0a901)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests serial_enumerate
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 4) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 4) stdout ----
[INFO] [stdout] Test executable failed (exit status: 101).
[INFO] [stdout] 
[INFO] [stdout] stderr:
[INFO] [stdout] thread 'main' panicked at src/lib.rs:5:58:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: Error(Msg("/dev/serial not found"), (Some(Os { code: 2, kind: NotFound, message: "No such file or directory" }), Some(stack backtrace:
[INFO] [stdout]    0:     0x55d56e458540 - backtrace::backtrace::libunwind::trace::h8f9fb1159be8b8a3
[INFO] [stdout]                         at src/backtrace/libunwind.rs:54
[INFO] [stdout]                          - backtrace::backtrace::trace::h9b9b0141317daf03
[INFO] [stdout]                         at src/backtrace/mod.rs:70
[INFO] [stdout]    1:     0x55d56e45ea78 - backtrace::capture::Backtrace::new::hb45ab90d6c437809
[INFO] [stdout]                         at /opt/rustwide/target/debug/build/backtrace-b78e80963bc126c2/out/capture.rs:79
[INFO] [stdout]    2:     0x55d56e454e47 - error_chain::make_backtrace::h35e5b2e936a71e49
[INFO] [stdout]                         at src/lib.rs:684
[INFO] [stdout]    3:     0x55d56e454046 - <core::result::Result<T,E> as serial_enumerate::errors::ChainErr<T>>::chain_err::{{closure}}::{{closure}}::h910958517d25b18f
[INFO] [stdout]                         at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/error-chain-0.5.0/src/lib.rs:504
[INFO] [stdout]    4:     0x55d56e4506a3 - core::option::Option<T>::unwrap_or_else::h7b41747a0c189376
[INFO] [stdout]                         at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/core/src/option.rs:976
[INFO] [stdout]    5:     0x55d56e4538d6 - <core::result::Result<T,E> as serial_enumerate::errors::ChainErr<T>>::chain_err::{{closure}}::h41df547db11e61b2
[INFO] [stdout]                         at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/error-chain-0.5.0/src/lib.rs:503
[INFO] [stdout]    6:     0x55d56e45090d - core::result::Result<T,E>::map_err::h771b0bae96cd7e12
[INFO] [stdout]                         at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/core/src/result.rs:829
[INFO] [stdout]    7:     0x55d56e453741 - <core::result::Result<T,E> as serial_enumerate::errors::ChainErr<T>>::chain_err::h7a66ea1b9747f163
[INFO] [stdout]                         at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/error-chain-0.5.0/src/lib.rs:500
[INFO] [stdout]    8:     0x55d56e452e08 - serial_enumerate::enumerate_serial_ports::h7e857395c14502af
[INFO] [stdout]                         at src/lib.rs:46
[INFO] [stdout]    9:     0x55d56e44f671 - rust_out::main::_doctest_main_src_lib_rs_4_0::h9056ece4c0c1964e
[INFO] [stdout]   10:     0x55d56e44f655 - rust_out::main::h71185a25be64b52e
[INFO] [stdout]   11:     0x55d56e44f0b2 - core::ops::function::FnOnce::call_once::h0a5e8bc522cf7e26
[INFO] [stdout]   12:     0x55d56e44eea5 - std::sys_common::backtrace::__rust_begin_short_backtrace::h904992c6a2208b49
[INFO] [stdout]   13:     0x55d56e44eef8 - std::rt::lang_start::{{closure}}::h95a4dad7805b7c7c
[INFO] [stdout]   14:     0x55d56e49dd10 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h4eb4c5e1620f29b0
[INFO] [stdout]                         at library/core/src/ops/function.rs:284
[INFO] [stdout]                          - std::panicking::try::do_call::h73fd26535faffcdf
[INFO] [stdout]                         at library/std/src/panicking.rs:552
[INFO] [stdout]                          - std::panicking::try::h77ff1d98f0fb9f39
[INFO] [stdout]                         at library/std/src/panicking.rs:516
[INFO] [stdout]                          - std::panic::catch_unwind::hab3caf2448b95e37
[INFO] [stdout]                         at library/std/src/panic.rs:142
[INFO] [stdout]                          - std::rt::lang_start_internal::{{closure}}::h8086711f9c783f78
[INFO] [stdout]                         at library/std/src/rt.rs:148
[INFO] [stdout]                          - std::panicking::try::do_call::hf920d4dc291cd6ca
[INFO] [stdout]                         at library/std/src/panicking.rs:552
[INFO] [stdout]                          - std::panicking::try::h2b806ccc0a85db74
[INFO] [stdout]                         at library/std/src/panicking.rs:516
[INFO] [stdout]                          - std::panic::catch_unwind::h038489539c507df2
[INFO] [stdout]                         at library/std/src/panic.rs:142
[INFO] [stdout]                          - std::rt::lang_start_internal::h28503b88912e8a5c
[INFO] [stdout]                         at library/std/src/rt.rs:148
[INFO] [stdout]   15:     0x55d56e44eed6 - std::rt::lang_start::h9942cc54b4d5350a
[INFO] [stdout]   16:     0x55d56e44f854 - main
[INFO] [stdout]   17:     0x7fcff463ad8f - <unknown>
[INFO] [stdout]   18:     0x7fcff463ae3f - __libc_start_main
[INFO] [stdout]   19:     0x55d56e44ead4 - _start
[INFO] [stdout]   20:                0x0 - <unknown>)))
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x55d56e4a29b6 - std::backtrace_rs::backtrace::libunwind::trace::h261606ad26a499c1
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
[INFO] [stdout]    1:     0x55d56e4a29b6 - std::backtrace_rs::backtrace::trace_unsynchronized::hd183f0625477fb28
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x55d56e4a29b6 - std::sys_common::backtrace::_print_fmt::hd7f8fef21b4eda67
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stdout]    3:     0x55d56e4a29b6 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h623d9b51f2f453f1
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stdout]    4:     0x55d56e4c1ca0 - core::fmt::rt::Argument::fmt::h9f417ac76a86f368
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/core/src/fmt/rt.rs:142:9
[INFO] [stdout]    5:     0x55d56e4c1ca0 - core::fmt::write::hc9b6faf4ac2aeff7
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/core/src/fmt/mod.rs:1120:17
[INFO] [stdout]    6:     0x55d56e4a0c7f - std::io::Write::write_fmt::hfead1eee52c2e65e
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/io/mod.rs:1810:15
[INFO] [stdout]    7:     0x55d56e4a2794 - std::sys_common::backtrace::_print::hd5d66399c7df88a2
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    8:     0x55d56e4a2794 - std::sys_common::backtrace::print::he81ed2da642d37e5
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    9:     0x55d56e4a3cf7 - std::panicking::default_hook::{{closure}}::h85773f4fa117163d
[INFO] [stdout]   10:     0x55d56e4a3a59 - std::panicking::default_hook::h6a1694a91d09b278
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panicking.rs:292:9
[INFO] [stdout]   11:     0x55d56e4a4188 - std::panicking::rust_panic_with_hook::h0a7ad96e90f7145b
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panicking.rs:779:13
[INFO] [stdout]   12:     0x55d56e4a4062 - std::panicking::begin_panic_handler::{{closure}}::h7919090525c6485e
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panicking.rs:657:13
[INFO] [stdout]   13:     0x55d56e4a2eb6 - std::sys_common::backtrace::__rust_end_short_backtrace::hf3289479464f7dfe
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stdout]   14:     0x55d56e4a3dc0 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panicking.rs:645:5
[INFO] [stdout]   15:     0x55d56e44e3a5 - core::panicking::panic_fmt::hcc9f77c5c132af55
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/core/src/panicking.rs:72:14
[INFO] [stdout]   16:     0x55d56e44e813 - core::result::unwrap_failed::hbe14f498be1452f9
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/core/src/result.rs:1649:5
[INFO] [stdout]   17:     0x55d56e44f2d4 - core::result::Result<T,E>::unwrap::h9e0704914ca4ff84
[INFO] [stdout]   18:     0x55d56e44f688 - rust_out::main::_doctest_main_src_lib_rs_4_0::h9056ece4c0c1964e
[INFO] [stdout]   19:     0x55d56e44f656 - rust_out::main::h71185a25be64b52e
[INFO] [stdout]   20:     0x55d56e44f0b3 - core::ops::function::FnOnce::call_once::h0a5e8bc522cf7e26
[INFO] [stdout]   21:     0x55d56e44eea6 - std::sys_common::backtrace::__rust_begin_short_backtrace::h904992c6a2208b49
[INFO] [stdout]   22:     0x55d56e44eef9 - std::rt::lang_start::{{closure}}::h95a4dad7805b7c7c
[INFO] [stdout]   23:     0x55d56e49dd11 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h4eb4c5e1620f29b0
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/core/src/ops/function.rs:284:13
[INFO] [stdout]   24:     0x55d56e49dd11 - std::panicking::try::do_call::h73fd26535faffcdf
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panicking.rs:552:40
[INFO] [stdout]   25:     0x55d56e49dd11 - std::panicking::try::h77ff1d98f0fb9f39
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panicking.rs:516:19
[INFO] [stdout]   26:     0x55d56e49dd11 - std::panic::catch_unwind::hab3caf2448b95e37
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panic.rs:142:14
[INFO] [stdout]   27:     0x55d56e49dd11 - std::rt::lang_start_internal::{{closure}}::h8086711f9c783f78
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/rt.rs:148:48
[INFO] [stdout]   28:     0x55d56e49dd11 - std::panicking::try::do_call::hf920d4dc291cd6ca
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panicking.rs:552:40
[INFO] [stdout]   29:     0x55d56e49dd11 - std::panicking::try::h2b806ccc0a85db74
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panicking.rs:516:19
[INFO] [stdout]   30:     0x55d56e49dd11 - std::panic::catch_unwind::h038489539c507df2
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panic.rs:142:14
[INFO] [stdout]   31:     0x55d56e49dd11 - std::rt::lang_start_internal::h28503b88912e8a5c
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/rt.rs:148:20
[INFO] [stdout]   32:     0x55d56e44eed7 - std::rt::lang_start::h9942cc54b4d5350a
[INFO] [stdout]   33:     0x55d56e44f855 - main
[INFO] [stdout]   34:     0x7fcff463ad90 - <unknown>
[INFO] [stdout]   35:     0x7fcff463ae40 - __libc_start_main
[INFO] [stdout]   36:     0x55d56e44ead5 - _start
[INFO] [stdout]   37:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 4)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.25s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "e8aad45c28e116297c85c5c6cbd324fb3edff2cdb5dd1ee23882a63fe5be9253", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8aad45c28e116297c85c5c6cbd324fb3edff2cdb5dd1ee23882a63fe5be9253", kill_on_drop: false }`
[INFO] [stdout] e8aad45c28e116297c85c5c6cbd324fb3edff2cdb5dd1ee23882a63fe5be9253
