[INFO] fetching crate fern 0.7.1...
[INFO] testing fern-0.7.1 against master#0d162b25edd5bf0dba9a22e83b614f1113e90474 for pr-150681
[INFO] extracting crate fern 0.7.1 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate fern 0.7.1
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate fern 0.7.1
[INFO] tweaked toml for crates.io crate fern 0.7.1 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate fern 0.7.1 on toolchain 0d162b25edd5bf0dba9a22e83b614f1113e90474
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate fern 0.7.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded syslog v7.0.0
[INFO] [stderr]   Downloaded syslog v3.3.0
[INFO] [stderr]   Downloaded error-chain v0.11.0
[INFO] [stderr]   Downloaded syslog v4.0.1
[INFO] [stderr]   Downloaded syslog v6.1.1
[INFO] [stderr]   Downloaded unix_socket v0.5.0
[INFO] [stderr]   Downloaded reopen v0.3.0
[INFO] [stderr]   Downloaded colored v2.1.0
[INFO] [stderr]   Downloaded reopen v1.0.3
[INFO] [stderr]   Downloaded proc-macro2 v1.0.88
[INFO] [stderr]   Downloaded time v0.3.15
[INFO] [stderr]   Downloaded cc v1.1.1
[INFO] [stderr]   Downloaded rustix v0.38.9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d62cc722ca6294626e2457364cbe0d65c23ef05b3adae66e1c780b41f8dcf1d7
[INFO] running `Command { std: "docker" "start" "-a" "d62cc722ca6294626e2457364cbe0d65c23ef05b3adae66e1c780b41f8dcf1d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d62cc722ca6294626e2457364cbe0d65c23ef05b3adae66e1c780b41f8dcf1d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d62cc722ca6294626e2457364cbe0d65c23ef05b3adae66e1c780b41f8dcf1d7", kill_on_drop: false }`
[INFO] [stdout] d62cc722ca6294626e2457364cbe0d65c23ef05b3adae66e1c780b41f8dcf1d7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=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" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e774d4d1c1a6189908d2f1749b9ccb2ffb60ad872b21455ccbf46ed0390db8b7
[INFO] running `Command { std: "docker" "start" "-a" "e774d4d1c1a6189908d2f1749b9ccb2ffb60ad872b21455ccbf46ed0390db8b7", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.22
[INFO] [stderr]    Compiling fern v0.7.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.91s
[INFO] running `Command { std: "docker" "inspect" "e774d4d1c1a6189908d2f1749b9ccb2ffb60ad872b21455ccbf46ed0390db8b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e774d4d1c1a6189908d2f1749b9ccb2ffb60ad872b21455ccbf46ed0390db8b7", kill_on_drop: false }`
[INFO] [stdout] e774d4d1c1a6189908d2f1749b9ccb2ffb60ad872b21455ccbf46ed0390db8b7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=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" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bb4bd646ce8819c55cbe3b56cc3a6ae036f4fa3748c1c64488830efd70c11cae
[INFO] running `Command { std: "docker" "start" "-a" "bb4bd646ce8819c55cbe3b56cc3a6ae036f4fa3748c1c64488830efd70c11cae", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.161
[INFO] [stderr]    Compiling rustix v0.38.9
[INFO] [stderr]    Compiling unicode-width v0.1.14
[INFO] [stderr]    Compiling linux-raw-sys v0.4.14
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling tempfile v3.8.0
[INFO] [stderr]    Compiling fern v0.7.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 7.71s
[INFO] running `Command { std: "docker" "inspect" "bb4bd646ce8819c55cbe3b56cc3a6ae036f4fa3748c1c64488830efd70c11cae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb4bd646ce8819c55cbe3b56cc3a6ae036f4fa3748c1c64488830efd70c11cae", kill_on_drop: false }`
[INFO] [stdout] bb4bd646ce8819c55cbe3b56cc3a6ae036f4fa3748c1c64488830efd70c11cae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=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" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 338fa980668befa78ff355453248a3b8b10b6f9cb10e7c77d0c3cee77d383277
[INFO] running `Command { std: "docker" "start" "-a" "338fa980668befa78ff355453248a3b8b10b6f9cb10e7c77d0c3cee77d383277", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/fern-ae309710cf0136b7)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test log_impl::test::test_level_config_find_exact_many ... ok
[INFO] [stdout] test log_impl::test::test_level_config_hierarchy_correct ... ok
[INFO] [stdout] test log_impl::test::test_level_config_simple_hierarchy ... ok
[INFO] [stdout] test log_impl::test::test_level_config_single_colon_is_not_double_colon ... ok
[INFO] [stdout] test log_impl::test::test_level_config_find_exact_minimal ... ok
[INFO] [stdout] test log_impl::test::test_level_config_similar_names_are_not_same ... ok
[INFO] [stdout] test log_impl::test::test_level_config_all_chars ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/channel_logging.rs (/opt/rustwide/target/debug/deps/channel_logging-16f28a2619651b75)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]      Running tests/enabled_is_deep_check.rs (/opt/rustwide/target/debug/deps/enabled_is_deep_check-8cba75e6d5b18a12)
[INFO] [stdout] test test_channel_logging ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 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 ensure_enabled_is_a_deep_check ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/file_logging.rs (/opt/rustwide/target/debug/deps/file_logging-a1a67bbcc6f4e081)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] [INFO] Test information message
[INFO] [stdout] [WARN] Test warning message
[INFO] [stdout] [ERROR] Test error message
[INFO] [stdout] test test_custom_line_separators ... ok
[INFO] [stdout] test test_basic_logging_file_logging ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/global_logging.rs (/opt/rustwide/target/debug/deps/global_logging-07f474520bd3dd1a)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_global_logger ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/meta_logging.rs (/opt/rustwide/target/debug/deps/meta_logging-eb56c100dc829287)
[INFO] [stdout] 
[INFO] [stderr]      Running tests/panic_logging.rs (/opt/rustwide/target/debug/deps/panic_logging-02d41a2e8bc4752a)
[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 3 tests
[INFO] [stdout] this should not panic
[INFO] [stdout] test double_chained_with_panics_no_info_panic ... ok
[INFO] [stdout] test double_chained_with_panics_yes_error_panic - should panic ... ok
[INFO] [stdout] test test_panic_panics - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/reopen_logging.rs (/opt/rustwide/target/debug/deps/reopen_logging-199b8db94143d202)
[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]      Running tests/support.rs (/opt/rustwide/target/debug/deps/support-7153cf4edcdb1898)
[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]      Running tests/write_logging.rs (/opt/rustwide/target/debug/deps/write_logging-8d26f8709031a87c)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] [INFO] Test information message
[INFO] [stdout] test test_raw_write_logging ... ok
[INFO] [stderr]    Doc-tests fern
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 37 tests
[INFO] [stdout] test src/builders.rs - builders::Output::file (line 1020) - compile ... ok
[INFO] [stdout] test src/builders.rs - builders::Dispatch::into_shared (line 368) - compile ... ok
[INFO] [stdout] test src/builders.rs - builders::Dispatch (line 46) - compile ... ok
[INFO] [stdout] test src/builders.rs - builders::Output::file (line 1010) - compile ... ok
[INFO] [stdout] test src/builders.rs - builders::Output::file (line 1032) - compile ... ok
[INFO] [stdout] test src/builders.rs - builders::Output::writer (line 1057) - compile ... ok
[INFO] [stdout] test src/builders.rs - builders::Output::stderr (line 1203) ... ok
[INFO] [stdout] test src/builders.rs - builders::Dispatch::level_for (line 268) ... ok
[INFO] [stdout] test src/builders.rs - builders::Dispatch::chain (line 199) ... ok
[INFO] [stdout] test src/builders.rs - builders::Output::stderr (line 1210) ... ok
[INFO] [stdout] test src/builders.rs - builders::Output::stdout (line 1184) ... ok
[INFO] [stdout] test src/builders.rs - builders::Output::writer (line 1074) - compile ... ok
[INFO] [stdout] test src/builders.rs - builders::Dispatch::into_log (line 624) ... ok
[INFO] [stdout] test src/builders.rs - builders::Output::call (line 1335) ... ok
[INFO] [stdout] test src/builders.rs - builders::Dispatch::level (line 223) ... ok
[INFO] [stdout] test src/builders.rs - builders::Dispatch::level_for (line 254) ... ok
[INFO] [stdout] test src/builders.rs - builders::Panic (line 776) - compile ... ok
[INFO] [stdout] test src/lib.rs - log_file (line 319) - compile ... ok
[INFO] [stdout] test src/lib.rs - (line 34) - compile ... ok
[INFO] [stdout] test src/builders.rs - builders::Dispatch::filter (line 328) ... ok
[INFO] [stdout] test src/builders.rs - builders::Dispatch::format (line 165) ... ok
[INFO] [stdout] test src/builders.rs - builders::Panic (line 756) ... ok
[INFO] [stdout] test src/lib.rs - (line 106) ... ok
[INFO] [stdout] test src/builders.rs - builders::Output::stdout (line 1177) ... ok
[INFO] [stdout] test src/lib.rs - (line 126) ... ok
[INFO] [stdout] test src/lib.rs - (line 99) ... ok
[INFO] [stdout] test src/lib.rs - (line 135) ... ok
[INFO] [stdout] test src/log_impl.rs - log_impl::FormatCallback (line 49) ... ok
[INFO] [stdout] test src/builders.rs - builders::Output::sender (line 1230) ... ok
[INFO] [stdout] test src/lib.rs - (line 70) ... ok
[INFO] [stdout] test src/lib.rs - (line 77) ... ok
[INFO] [stdout] test src/log_impl.rs - log_impl::FormatCallback<'a>::finish (line 520) ... ok
[INFO] [stdout] test src/lib.rs - (line 147) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 190) ... ok
[INFO] [stdout] test src/meta.rs - meta (line 6) ... ok
[INFO] [stdout] test src/lib.rs - (line 157) ... ok
[INFO] [stdout] test src/meta.rs - meta (line 49) ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 147) stdout ----
[INFO] [stdout] Test executable failed (exit status: 101).
[INFO] [stdout] 
[INFO] [stdout] stderr:
[INFO] [stdout] 
[INFO] [stdout] thread 'main' (838) panicked at src/lib.rs:8:36:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x557f200c75c2 - std[3b51380354919863]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x557f200c75c2 - std[3b51380354919863]::backtrace_rs::backtrace::trace_unsynchronized::<std[3b51380354919863]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x557f200c75c2 - std[3b51380354919863]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x557f200c75c2 - <<std[3b51380354919863]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[27de1724e4349be2]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x557f200d879a - <core[27de1724e4349be2]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x557f200d879a - core[27de1724e4349be2]::fmt::write
[INFO] [stdout]    6:     0x557f200cb596 - std[3b51380354919863]::io::default_write_fmt::<std[3b51380354919863]::sys::stdio::unix::Stderr>
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x557f200cb596 - <std[3b51380354919863]::sys::stdio::unix::Stderr as std[3b51380354919863]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x557f200b281f - <std[3b51380354919863]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x557f200b281f - std[3b51380354919863]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x557f200c3a41 - std[3b51380354919863]::panicking::default_hook
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/panicking.rs:319:9
[INFO] [stdout]   11:     0x557f200c3bfb - std[3b51380354919863]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/panicking.rs:825:13
[INFO] [stdout]   12:     0x557f200b28d8 - std[3b51380354919863]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/panicking.rs:698:13
[INFO] [stdout]   13:     0x557f200a7e89 - std[3b51380354919863]::sys::backtrace::__rust_end_short_backtrace::<std[3b51380354919863]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   14:     0x557f200b30fd - __rustc[d79c0ace40940972]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/panicking.rs:689:5
[INFO] [stdout]   15:     0x557f200d8dcc - core[27de1724e4349be2]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/core/src/panicking.rs:80:14
[INFO] [stdout]   16:     0x557f200d8ba2 - core[27de1724e4349be2]::result::unwrap_failed
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/core/src/result.rs:1867:5
[INFO] [stdout]   17:     0x557f2009442b - rust_out[8e547ba4386cb4c9]::main
[INFO] [stdout]   18:     0x557f20094e43 - <fn() as core[27de1724e4349be2]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]   19:     0x557f20094386 - std[3b51380354919863]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stdout]   20:     0x557f20094399 - std[3b51380354919863]::rt::lang_start::<()>::{closure#0}
[INFO] [stdout]   21:     0x557f200c3036 - <&dyn core[27de1724e4349be2]::ops::function::Fn<(), Output = i32> + core[27de1724e4349be2]::marker::Sync + core[27de1724e4349be2]::panic::unwind_safe::RefUnwindSafe as core[27de1724e4349be2]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/core/src/ops/function.rs:287:21
[INFO] [stdout]   22:     0x557f200c3036 - std[3b51380354919863]::panicking::catch_unwind::do_call::<&dyn core[27de1724e4349be2]::ops::function::Fn<(), Output = i32> + core[27de1724e4349be2]::marker::Sync + core[27de1724e4349be2]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/panicking.rs:581:40
[INFO] [stdout]   23:     0x557f200c3036 - std[3b51380354919863]::panicking::catch_unwind::<i32, &dyn core[27de1724e4349be2]::ops::function::Fn<(), Output = i32> + core[27de1724e4349be2]::marker::Sync + core[27de1724e4349be2]::panic::unwind_safe::RefUnwindSafe>
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/panicking.rs:544:19
[INFO] [stdout]   24:     0x557f200c3036 - std[3b51380354919863]::panic::catch_unwind::<&dyn core[27de1724e4349be2]::ops::function::Fn<(), Output = i32> + core[27de1724e4349be2]::marker::Sync + core[27de1724e4349be2]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/panic.rs:359:14
[INFO] [stdout]   25:     0x557f200c3036 - std[3b51380354919863]::rt::lang_start_internal::{closure#0}
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/rt.rs:175:24
[INFO] [stdout]   26:     0x557f200c3036 - std[3b51380354919863]::panicking::catch_unwind::do_call::<std[3b51380354919863]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/panicking.rs:581:40
[INFO] [stdout]   27:     0x557f200c3036 - std[3b51380354919863]::panicking::catch_unwind::<isize, std[3b51380354919863]::rt::lang_start_internal::{closure#0}>
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/panicking.rs:544:19
[INFO] [stdout]   28:     0x557f200c3036 - std[3b51380354919863]::panic::catch_unwind::<std[3b51380354919863]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/panic.rs:359:14
[INFO] [stdout]   29:     0x557f200c3036 - std[3b51380354919863]::rt::lang_start_internal
[INFO] [stdout]                                at /rustc/0d162b25edd5bf0dba9a22e83b614f1113e90474/library/std/src/rt.rs:171:5
[INFO] [stdout]   30:     0x557f20094371 - std[3b51380354919863]::rt::lang_start::<()>
[INFO] [stdout]   31:     0x557f20094ea5 - main
[INFO] [stdout]   32:     0x7b4e1fd381ca - <unknown>
[INFO] [stdout]   33:     0x7b4e1fd3828b - __libc_start_main
[INFO] [stdout]   34:     0x557f20093fe5 - _start
[INFO] [stdout]   35:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 147)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 36 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.29s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "338fa980668befa78ff355453248a3b8b10b6f9cb10e7c77d0c3cee77d383277", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "338fa980668befa78ff355453248a3b8b10b6f9cb10e7c77d0c3cee77d383277", kill_on_drop: false }`
[INFO] [stdout] 338fa980668befa78ff355453248a3b8b10b6f9cb10e7c77d0c3cee77d383277
