[INFO] fetching crate serial_enumerate 0.1.0...
[INFO] testing serial_enumerate-0.1.0 against try#db823df02fd0c2cf67b43025ac3fef3f2d743245 for pr-150681
[INFO] extracting crate serial_enumerate 0.1.0 into /workspace/builds/worker-2-tc2/source
[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-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate serial_enumerate 0.1.0 on toolchain db823df02fd0c2cf67b43025ac3fef3f2d743245
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 17 packages to latest compatible versions
[INFO] [stderr]       Adding error-chain v0.5.0 (available: v0.12.4)
[INFO] [stderr]       Adding winreg v0.4.0 (available: v0.55.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6fcb19409192d92da20f17ccfa61d45f9c5c97ce0c7e054d8d802ef183d9eb5c
[INFO] running `Command { std: "docker" "start" "-a" "6fcb19409192d92da20f17ccfa61d45f9c5c97ce0c7e054d8d802ef183d9eb5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6fcb19409192d92da20f17ccfa61d45f9c5c97ce0c7e054d8d802ef183d9eb5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6fcb19409192d92da20f17ccfa61d45f9c5c97ce0c7e054d8d802ef183d9eb5c", kill_on_drop: false }`
[INFO] [stdout] 6fcb19409192d92da20f17ccfa61d45f9c5c97ce0c7e054d8d802ef183d9eb5c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=forbid" "-e" "RUSTDOCFLAGS=--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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e3d8b4f6a9ede5df976d2bce46ba9dcc96800b38738d98c8fa615a68ade1265e
[INFO] running `Command { std: "docker" "start" "-a" "e3d8b4f6a9ede5df976d2bce46ba9dcc96800b38738d98c8fa615a68ade1265e", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]    Compiling winapi-build v0.1.1
[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 v0.1.26
[INFO] [stderr]    Compiling backtrace-sys v0.1.37
[INFO] [stderr]    Compiling dbghelp-sys v0.2.0
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]    Compiling error-chain v0.5.0
[INFO] [stderr]    Compiling serial_enumerate v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.68s
[INFO] running `Command { std: "docker" "inspect" "e3d8b4f6a9ede5df976d2bce46ba9dcc96800b38738d98c8fa615a68ade1265e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3d8b4f6a9ede5df976d2bce46ba9dcc96800b38738d98c8fa615a68ade1265e", kill_on_drop: false }`
[INFO] [stdout] e3d8b4f6a9ede5df976d2bce46ba9dcc96800b38738d98c8fa615a68ade1265e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=forbid" "-e" "RUSTDOCFLAGS=--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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b5ae3cfdbeb7261f43f093c52e3cd15bbd9b7f1b0c13f192e8a9646d00a9c4ab
[INFO] running `Command { std: "docker" "start" "-a" "b5ae3cfdbeb7261f43f093c52e3cd15bbd9b7f1b0c13f192e8a9646d00a9c4ab", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]    Compiling serial_enumerate v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "b5ae3cfdbeb7261f43f093c52e3cd15bbd9b7f1b0c13f192e8a9646d00a9c4ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5ae3cfdbeb7261f43f093c52e3cd15bbd9b7f1b0c13f192e8a9646d00a9c4ab", kill_on_drop: false }`
[INFO] [stdout] b5ae3cfdbeb7261f43f093c52e3cd15bbd9b7f1b0c13f192e8a9646d00a9c4ab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=forbid" "-e" "RUSTDOCFLAGS=--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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 164c9941cfba468ed7c7d8ecd3b069a26d8350dc24a30addd1bfe6e47a4e202b
[INFO] running `Command { std: "docker" "start" "-a" "164c9941cfba468ed7c7d8ecd3b069a26d8350dc24a30addd1bfe6e47a4e202b", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/serial_enumerate-76c9e34302af4b2f)
[INFO] [stderr]    Doc-tests serial_enumerate
[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] [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] 
[INFO] [stdout] thread 'main' (39) 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:     0x5c9dd251adcd - backtrace[e5d778e3ac099f15]::backtrace::libunwind::trace
[INFO] [stdout]                         at src/backtrace/libunwind.rs:54
[INFO] [stdout]                          - backtrace[e5d778e3ac099f15]::backtrace::trace::<<backtrace[e5d778e3ac099f15]::capture::Backtrace>::new::{closure#0}>
[INFO] [stdout]                         at src/backtrace/mod.rs:70
[INFO] [stdout]    1:     0x5c9dd251bfed - <backtrace[e5d778e3ac099f15]::capture::Backtrace>::new
[INFO] [stdout]                         at /opt/rustwide/target/debug/build/backtrace-04f8ae21642f1ee0/out/capture.rs:79
[INFO] [stdout]    2:     0x5c9dd2519f29 - error_chain[f458e4f745bb20d]::make_backtrace
[INFO] [stdout]                         at src/lib.rs:684
[INFO] [stdout]    3:     0x5c9dd2516ea6 - <core[585f66e14d78f9ba]::result::Result<std[3f03f8b59f91bef1]::fs::ReadDir, std[3f03f8b59f91bef1]::io::error::Error> as serial_enumerate[c2128987287ba497]::errors::ChainErr<std[3f03f8b59f91bef1]::fs::ReadDir>>::chain_err::<serial_enumerate[c2128987287ba497]::enumerate_serial_ports::{closure#0}, &str>::{closure#0}::{closure#0}
[INFO] [stdout]                         at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/error-chain-0.5.0/src/lib.rs:504
[INFO] [stdout]    4:     0x5c9dd25156fa - <core[585f66e14d78f9ba]::option::Option<core[585f66e14d78f9ba]::option::Option<alloc[15e7b27aba85d2e2]::sync::Arc<backtrace[e5d778e3ac099f15]::capture::Backtrace>>>>::unwrap_or_else::<<core[585f66e14d78f9ba]::result::Result<std[3f03f8b59f91bef1]::fs::ReadDir, std[3f03f8b59f91bef1]::io::error::Error> as serial_enumerate[c2128987287ba497]::errors::ChainErr<std[3f03f8b59f91bef1]::fs::ReadDir>>::chain_err<serial_enumerate[c2128987287ba497]::enumerate_serial_ports::{closure#0}, &str>::{closure#0}::{closure#0}>
[INFO] [stdout]                         at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/core/src/option.rs:1067
[INFO] [stdout]    5:     0x5c9dd2516793 - <core[585f66e14d78f9ba]::result::Result<std[3f03f8b59f91bef1]::fs::ReadDir, std[3f03f8b59f91bef1]::io::error::Error> as serial_enumerate[c2128987287ba497]::errors::ChainErr<std[3f03f8b59f91bef1]::fs::ReadDir>>::chain_err::<serial_enumerate[c2128987287ba497]::enumerate_serial_ports::{closure#0}, &str>::{closure#0}
[INFO] [stdout]                         at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/error-chain-0.5.0/src/lib.rs:503
[INFO] [stdout]    6:     0x5c9dd25157cf - <core[585f66e14d78f9ba]::result::Result<std[3f03f8b59f91bef1]::fs::ReadDir, std[3f03f8b59f91bef1]::io::error::Error>>::map_err::<serial_enumerate[c2128987287ba497]::errors::Error, <core[585f66e14d78f9ba]::result::Result<std[3f03f8b59f91bef1]::fs::ReadDir, std[3f03f8b59f91bef1]::io::error::Error> as serial_enumerate[c2128987287ba497]::errors::ChainErr<std[3f03f8b59f91bef1]::fs::ReadDir>>::chain_err<serial_enumerate[c2128987287ba497]::enumerate_serial_ports::{closure#0}, &str>::{closure#0}>
[INFO] [stdout]                         at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/core/src/result.rs:968
[INFO] [stdout]    7:     0x5c9dd2516597 - <core[585f66e14d78f9ba]::result::Result<std[3f03f8b59f91bef1]::fs::ReadDir, std[3f03f8b59f91bef1]::io::error::Error> as serial_enumerate[c2128987287ba497]::errors::ChainErr<std[3f03f8b59f91bef1]::fs::ReadDir>>::chain_err::<serial_enumerate[c2128987287ba497]::enumerate_serial_ports::{closure#0}, &str>
[INFO] [stdout]                         at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/error-chain-0.5.0/src/lib.rs:500
[INFO] [stdout]    8:     0x5c9dd2516fe8 - serial_enumerate[c2128987287ba497]::enumerate_serial_ports
[INFO] [stdout]                         at src/lib.rs:46
[INFO] [stdout]    9:     0x5c9dd2514ee1 - rust_out[183646e59c86b0c5]::main::_doctest_main_src_lib_rs_4_0
[INFO] [stdout]   10:     0x5c9dd2514e25 - rust_out[183646e59c86b0c5]::main
[INFO] [stdout]   11:     0x5c9dd2515612 - <fn() as core[585f66e14d78f9ba]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]   12:     0x5c9dd2514de5 - std[3f03f8b59f91bef1]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stdout]   13:     0x5c9dd2514df8 - std[3f03f8b59f91bef1]::rt::lang_start::<()>::{closure#0}
[INFO] [stdout]   14:     0x5c9dd256d5e5 - <&dyn core[585f66e14d78f9ba]::ops::function::Fn<(), Output = i32> + core[585f66e14d78f9ba]::marker::Sync + core[585f66e14d78f9ba]::panic::unwind_safe::RefUnwindSafe as core[585f66e14d78f9ba]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                         at library/core/src/ops/function.rs:287
[INFO] [stdout]                          - std[3f03f8b59f91bef1]::panicking::catch_unwind::do_call::<&dyn core[585f66e14d78f9ba]::ops::function::Fn<(), Output = i32> + core[585f66e14d78f9ba]::marker::Sync + core[585f66e14d78f9ba]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stdout]                         at library/std/src/panicking.rs:581
[INFO] [stdout]                          - std[3f03f8b59f91bef1]::panicking::catch_unwind::<i32, &dyn core[585f66e14d78f9ba]::ops::function::Fn<(), Output = i32> + core[585f66e14d78f9ba]::marker::Sync + core[585f66e14d78f9ba]::panic::unwind_safe::RefUnwindSafe>
[INFO] [stdout]                         at library/std/src/panicking.rs:544
[INFO] [stdout]                          - std[3f03f8b59f91bef1]::panic::catch_unwind::<&dyn core[585f66e14d78f9ba]::ops::function::Fn<(), Output = i32> + core[585f66e14d78f9ba]::marker::Sync + core[585f66e14d78f9ba]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stdout]                         at library/std/src/panic.rs:359
[INFO] [stdout]                          - std[3f03f8b59f91bef1]::rt::lang_start_internal::{closure#0}
[INFO] [stdout]                         at library/std/src/rt.rs:175
[INFO] [stdout]                          - std[3f03f8b59f91bef1]::panicking::catch_unwind::do_call::<std[3f03f8b59f91bef1]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stdout]                         at library/std/src/panicking.rs:581
[INFO] [stdout]                          - std[3f03f8b59f91bef1]::panicking::catch_unwind::<isize, std[3f03f8b59f91bef1]::rt::lang_start_internal::{closure#0}>
[INFO] [stdout]                         at library/std/src/panicking.rs:544
[INFO] [stdout]                          - std[3f03f8b59f91bef1]::panic::catch_unwind::<std[3f03f8b59f91bef1]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stdout]                         at library/std/src/panic.rs:359
[INFO] [stdout]                          - std[3f03f8b59f91bef1]::rt::lang_start_internal
[INFO] [stdout]                         at library/std/src/rt.rs:171
[INFO] [stdout]   15:     0x5c9dd2514db0 - std[3f03f8b59f91bef1]::rt::lang_start::<()>
[INFO] [stdout]   16:     0x5c9dd2515674 - main
[INFO] [stdout]   17:     0x7e0dcddc71c9 - <unknown>
[INFO] [stdout]   18:     0x7e0dcddc728a - __libc_start_main
[INFO] [stdout]   19:     0x5c9dd2514c84 - _start
[INFO] [stdout]   20:                0x0 - <unknown>)))
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5c9dd25720a2 - std[3f03f8b59f91bef1]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5c9dd25720a2 - std[3f03f8b59f91bef1]::backtrace_rs::backtrace::trace_unsynchronized::<std[3f03f8b59f91bef1]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5c9dd25720a2 - std[3f03f8b59f91bef1]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x5c9dd25720a2 - <<std[3f03f8b59f91bef1]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[585f66e14d78f9ba]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x5c9dd2583d6a - <core[585f66e14d78f9ba]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x5c9dd2583d6a - core[585f66e14d78f9ba]::fmt::write
[INFO] [stdout]    6:     0x5c9dd2576906 - std[3f03f8b59f91bef1]::io::default_write_fmt::<std[3f03f8b59f91bef1]::sys::stdio::unix::Stderr>
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5c9dd2576906 - <std[3f03f8b59f91bef1]::sys::stdio::unix::Stderr as std[3f03f8b59f91bef1]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x5c9dd255ca2f - <std[3f03f8b59f91bef1]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x5c9dd255ca2f - std[3f03f8b59f91bef1]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x5c9dd256dff1 - std[3f03f8b59f91bef1]::panicking::default_hook
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/std/src/panicking.rs:319:9
[INFO] [stdout]   11:     0x5c9dd256e1ab - std[3f03f8b59f91bef1]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/std/src/panicking.rs:825:13
[INFO] [stdout]   12:     0x5c9dd255cae8 - std[3f03f8b59f91bef1]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/std/src/panicking.rs:698:13
[INFO] [stdout]   13:     0x5c9dd2551ec9 - std[3f03f8b59f91bef1]::sys::backtrace::__rust_end_short_backtrace::<std[3f03f8b59f91bef1]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   14:     0x5c9dd255d38d - __rustc[caa99d26c7bae192]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/std/src/panicking.rs:689:5
[INFO] [stdout]   15:     0x5c9dd258447c - core[585f66e14d78f9ba]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/core/src/panicking.rs:80:14
[INFO] [stdout]   16:     0x5c9dd25841f2 - core[585f66e14d78f9ba]::result::unwrap_failed
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/core/src/result.rs:1867:5
[INFO] [stdout]   17:     0x5c9dd2514f5a - rust_out[183646e59c86b0c5]::main::_doctest_main_src_lib_rs_4_0
[INFO] [stdout]   18:     0x5c9dd2514e26 - rust_out[183646e59c86b0c5]::main
[INFO] [stdout]   19:     0x5c9dd2515613 - <fn() as core[585f66e14d78f9ba]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]   20:     0x5c9dd2514de6 - std[3f03f8b59f91bef1]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stdout]   21:     0x5c9dd2514df9 - std[3f03f8b59f91bef1]::rt::lang_start::<()>::{closure#0}
[INFO] [stdout]   22:     0x5c9dd256d5e6 - <&dyn core[585f66e14d78f9ba]::ops::function::Fn<(), Output = i32> + core[585f66e14d78f9ba]::marker::Sync + core[585f66e14d78f9ba]::panic::unwind_safe::RefUnwindSafe as core[585f66e14d78f9ba]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/core/src/ops/function.rs:287:21
[INFO] [stdout]   23:     0x5c9dd256d5e6 - std[3f03f8b59f91bef1]::panicking::catch_unwind::do_call::<&dyn core[585f66e14d78f9ba]::ops::function::Fn<(), Output = i32> + core[585f66e14d78f9ba]::marker::Sync + core[585f66e14d78f9ba]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/std/src/panicking.rs:581:40
[INFO] [stdout]   24:     0x5c9dd256d5e6 - std[3f03f8b59f91bef1]::panicking::catch_unwind::<i32, &dyn core[585f66e14d78f9ba]::ops::function::Fn<(), Output = i32> + core[585f66e14d78f9ba]::marker::Sync + core[585f66e14d78f9ba]::panic::unwind_safe::RefUnwindSafe>
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/std/src/panicking.rs:544:19
[INFO] [stdout]   25:     0x5c9dd256d5e6 - std[3f03f8b59f91bef1]::panic::catch_unwind::<&dyn core[585f66e14d78f9ba]::ops::function::Fn<(), Output = i32> + core[585f66e14d78f9ba]::marker::Sync + core[585f66e14d78f9ba]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/std/src/panic.rs:359:14
[INFO] [stdout]   26:     0x5c9dd256d5e6 - std[3f03f8b59f91bef1]::rt::lang_start_internal::{closure#0}
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/std/src/rt.rs:175:24
[INFO] [stdout]   27:     0x5c9dd256d5e6 - std[3f03f8b59f91bef1]::panicking::catch_unwind::do_call::<std[3f03f8b59f91bef1]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/std/src/panicking.rs:581:40
[INFO] [stdout]   28:     0x5c9dd256d5e6 - std[3f03f8b59f91bef1]::panicking::catch_unwind::<isize, std[3f03f8b59f91bef1]::rt::lang_start_internal::{closure#0}>
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/std/src/panicking.rs:544:19
[INFO] [stdout]   29:     0x5c9dd256d5e6 - std[3f03f8b59f91bef1]::panic::catch_unwind::<std[3f03f8b59f91bef1]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/std/src/panic.rs:359:14
[INFO] [stdout]   30:     0x5c9dd256d5e6 - std[3f03f8b59f91bef1]::rt::lang_start_internal
[INFO] [stdout]                                at /rustc/db823df02fd0c2cf67b43025ac3fef3f2d743245/library/std/src/rt.rs:171:5
[INFO] [stdout]   31:     0x5c9dd2514db1 - std[3f03f8b59f91bef1]::rt::lang_start::<()>
[INFO] [stdout]   32:     0x5c9dd2515675 - main
[INFO] [stdout]   33:     0x7e0dcddc71ca - <unknown>
[INFO] [stdout]   34:     0x7e0dcddc728b - __libc_start_main
[INFO] [stdout]   35:     0x5c9dd2514c85 - _start
[INFO] [stdout]   36:                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 0.38s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "164c9941cfba468ed7c7d8ecd3b069a26d8350dc24a30addd1bfe6e47a4e202b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "164c9941cfba468ed7c7d8ecd3b069a26d8350dc24a30addd1bfe6e47a4e202b", kill_on_drop: false }`
[INFO] [stdout] 164c9941cfba468ed7c7d8ecd3b069a26d8350dc24a30addd1bfe6e47a4e202b
