[INFO] fetching crate fern 0.7.1...
[INFO] testing fern-0.7.1 against master#2fd6efc32704647e64d3d646d21c4c68eae100e4 for pr-149852-1
[INFO] extracting crate fern 0.7.1 into /workspace/builds/worker-7-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-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate fern 0.7.1 on toolchain 2fd6efc32704647e64d3d646d21c4c68eae100e4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "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" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tempfile v3.8.0
[INFO] [stderr]   Downloaded redox_syscall v0.3.5
[INFO] [stderr]   Downloaded fastrand v2.1.1
[INFO] [stderr]   Downloaded syslog v7.0.0
[INFO] [stderr]   Downloaded errno v0.3.9
[INFO] [stderr]   Downloaded syslog v4.0.1
[INFO] [stderr]   Downloaded signal-hook v0.1.17
[INFO] [stderr]   Downloaded unix_socket v0.5.0
[INFO] [stderr]   Downloaded quote v1.0.37
[INFO] [stderr]   Downloaded once_cell v1.20.2
[INFO] [stderr]   Downloaded js-sys v0.3.72
[INFO] [stderr]   Downloaded proc-macro2 v1.0.88
[INFO] [stderr]   Downloaded unicode-ident v1.0.13
[INFO] [stderr]   Downloaded cc v1.1.1
[INFO] [stderr]   Downloaded backtrace v0.3.68
[INFO] [stderr]   Downloaded signal-hook v0.3.17
[INFO] [stderr]   Downloaded reopen v1.0.3
[INFO] [stderr]   Downloaded error-chain v0.11.0
[INFO] [stderr]   Downloaded time v0.3.15
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.95
[INFO] [stderr]   Downloaded iana-time-zone v0.1.61
[INFO] [stderr]   Downloaded object v0.31.1
[INFO] [stderr]   Downloaded gimli v0.27.3
[INFO] [stderr]   Downloaded autocfg v1.4.0
[INFO] [stderr]   Downloaded syn v2.0.82
[INFO] [stderr]   Downloaded rustix v0.38.9
[INFO] [stderr]   Downloaded log v0.3.9
[INFO] [stderr]   Downloaded addr2line v0.20.0
[INFO] [stderr]   Downloaded error-chain v0.12.4
[INFO] [stderr]   Downloaded hostname v0.4.0
[INFO] [stderr]   Downloaded num_threads v0.1.7
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.95
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.95
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.95
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.95
[INFO] [stderr]   Downloaded colored v2.1.0
[INFO] [stderr]   Downloaded reopen v0.3.0
[INFO] [stderr]   Downloaded syslog v3.3.0
[INFO] [stderr]   Downloaded syslog v6.1.1
[INFO] [stderr]   Downloaded hostname v0.3.1
[INFO] [stderr]   Downloaded match_cfg v0.1.0
[INFO] [stderr]   Downloaded libc v0.2.161
[INFO] [stderr]   Downloaded linux-raw-sys v0.4.14
[INFO] [stderr]   Downloaded windows v0.52.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ed9189fa9739bf97dd423a494ebad187f976e8dca541cc6ee62f2eb6a4a2dcb0
[INFO] running `Command { std: "docker" "start" "-a" "ed9189fa9739bf97dd423a494ebad187f976e8dca541cc6ee62f2eb6a4a2dcb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ed9189fa9739bf97dd423a494ebad187f976e8dca541cc6ee62f2eb6a4a2dcb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed9189fa9739bf97dd423a494ebad187f976e8dca541cc6ee62f2eb6a4a2dcb0", kill_on_drop: false }`
[INFO] [stdout] ed9189fa9739bf97dd423a494ebad187f976e8dca541cc6ee62f2eb6a4a2dcb0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8022b0349e47c254be3d64912817e397afa7040564d5419635a9541e5b472b19
[INFO] running `Command { std: "docker" "start" "-a" "8022b0349e47c254be3d64912817e397afa7040564d5419635a9541e5b472b19", 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 0.92s
[INFO] running `Command { std: "docker" "inspect" "8022b0349e47c254be3d64912817e397afa7040564d5419635a9541e5b472b19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8022b0349e47c254be3d64912817e397afa7040564d5419635a9541e5b472b19", kill_on_drop: false }`
[INFO] [stdout] 8022b0349e47c254be3d64912817e397afa7040564d5419635a9541e5b472b19
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8d0f9cfd2712fb828665b0fe302f1eb08e797ab2910305217ee2ca2f4f51a9d1
[INFO] running `Command { std: "docker" "start" "-a" "8d0f9cfd2712fb828665b0fe302f1eb08e797ab2910305217ee2ca2f4f51a9d1", 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 bitflags v2.6.0
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling fastrand v2.1.1
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling humantime v2.1.0
[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 8.73s
[INFO] running `Command { std: "docker" "inspect" "8d0f9cfd2712fb828665b0fe302f1eb08e797ab2910305217ee2ca2f4f51a9d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d0f9cfd2712fb828665b0fe302f1eb08e797ab2910305217ee2ca2f4f51a9d1", kill_on_drop: false }`
[INFO] [stdout] 8d0f9cfd2712fb828665b0fe302f1eb08e797ab2910305217ee2ca2f4f51a9d1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ca2e81f1bfbaeb528983cb66fb45fe9db9a74628fee15c57ffb0b8a71f71c3e5
[INFO] running `Command { std: "docker" "start" "-a" "ca2e81f1bfbaeb528983cb66fb45fe9db9a74628fee15c57ffb0b8a71f71c3e5", 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_all_chars ... ok
[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_single_colon_is_not_double_colon ... ok
[INFO] [stdout] test log_impl::test::test_level_config_similar_names_are_not_same ... ok
[INFO] [stderr]      Running tests/channel_logging.rs (/opt/rustwide/target/debug/deps/channel_logging-16f28a2619651b75)
[INFO] [stdout] test log_impl::test::test_level_config_simple_hierarchy ... ok
[INFO] [stderr]      Running tests/enabled_is_deep_check.rs (/opt/rustwide/target/debug/deps/enabled_is_deep_check-8cba75e6d5b18a12)
[INFO] [stdout] test log_impl::test::test_level_config_find_exact_minimal ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 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 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] [stderr]      Running tests/file_logging.rs (/opt/rustwide/target/debug/deps/file_logging-a1a67bbcc6f4e081)
[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] [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] [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/panic_logging.rs (/opt/rustwide/target/debug/deps/panic_logging-02d41a2e8bc4752a)
[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] [stderr]      Running tests/support.rs (/opt/rustwide/target/debug/deps/support-7153cf4edcdb1898)
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running tests/write_logging.rs (/opt/rustwide/target/debug/deps/write_logging-8d26f8709031a87c)
[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 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] [INFO] Test information message
[INFO] [stdout] test test_raw_write_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] [stderr]    Doc-tests fern
[INFO] [stdout] 
[INFO] [stdout] running 37 tests
[INFO] [stdout] test src/builders.rs - builders::Output::file (line 1010) - 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 1032) - compile ... ok
[INFO] [stdout] test src/builders.rs - builders::Dispatch::into_log (line 624) ... ok
[INFO] [stdout] test src/builders.rs - builders::Output::file (line 1020) - compile ... ok
[INFO] [stdout] test src/builders.rs - builders::Output::sender (line 1230) ... ok
[INFO] [stdout] test src/builders.rs - builders::Output::writer (line 1057) - compile ... ok
[INFO] [stdout] test src/builders.rs - builders::Output::writer (line 1074) - compile ... ok
[INFO] [stdout] test src/builders.rs - builders::Dispatch::filter (line 328) ... ok
[INFO] [stdout] test src/builders.rs - builders::Output::stderr (line 1203) ... ok
[INFO] [stdout] test src/builders.rs - builders::Dispatch::level (line 223) ... ok
[INFO] [stdout] test src/builders.rs - builders::Output::stderr (line 1210) ... ok
[INFO] [stdout] test src/builders.rs - builders::Dispatch::chain (line 199) ... ok
[INFO] [stdout] test src/builders.rs - builders::Output::stdout (line 1184) ... ok
[INFO] [stdout] test src/builders.rs - builders::Panic (line 776) - compile ... ok
[INFO] [stdout] test src/lib.rs - (line 34) - compile ... ok
[INFO] [stdout] test src/builders.rs - builders::Dispatch::level_for (line 268) ... ok
[INFO] [stdout] test src/lib.rs - (line 126) ... ok
[INFO] [stdout] test src/builders.rs - builders::Output::stdout (line 1177) ... ok
[INFO] [stdout] test src/lib.rs - (line 106) ... 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 147) ... FAILED
[INFO] [stdout] test src/lib.rs - log_file (line 319) - compile ... ok
[INFO] [stdout] test src/builders.rs - builders::Output::call (line 1335) ... ok
[INFO] [stdout] test src/builders.rs - builders::Dispatch::level_for (line 254) ... ok
[INFO] [stdout] test src/lib.rs - (line 135) ... ok
[INFO] [stdout] test src/lib.rs - (line 99) ... ok
[INFO] [stdout] test src/lib.rs - (line 70) ... ok
[INFO] [stdout] test src/meta.rs - meta (line 6) ... ok
[INFO] [stdout] test src/lib.rs - (line 77) ... ok
[INFO] [stdout] test src/lib.rs - (line 190) ... ok
[INFO] [stdout] test src/log_impl.rs - log_impl::FormatCallback<'a>::finish (line 520) ... ok
[INFO] [stdout] test src/lib.rs - (line 157) ... ok
[INFO] [stdout] test src/log_impl.rs - log_impl::FormatCallback (line 49) ... 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' (664) 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:     0x5f31fc4ce622 - std[716c9a7a72e5c14e]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5f31fc4ce622 - std[716c9a7a72e5c14e]::backtrace_rs::backtrace::trace_unsynchronized::<std[716c9a7a72e5c14e]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5f31fc4ce622 - std[716c9a7a72e5c14e]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x5f31fc4ce622 - <<std[716c9a7a72e5c14e]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[c5ed12ab89cc536a]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x5f31fc4df7ea - <core[c5ed12ab89cc536a]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x5f31fc4df7ea - core[c5ed12ab89cc536a]::fmt::write
[INFO] [stdout]    6:     0x5f31fc4d25f6 - std[716c9a7a72e5c14e]::io::default_write_fmt::<std[716c9a7a72e5c14e]::sys::stdio::unix::Stderr>
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5f31fc4d25f6 - <std[716c9a7a72e5c14e]::sys::stdio::unix::Stderr as std[716c9a7a72e5c14e]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x5f31fc4b987f - <std[716c9a7a72e5c14e]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x5f31fc4b987f - std[716c9a7a72e5c14e]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x5f31fc4caaa1 - std[716c9a7a72e5c14e]::panicking::default_hook
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/panicking.rs:319:9
[INFO] [stdout]   11:     0x5f31fc4cac5b - std[716c9a7a72e5c14e]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/panicking.rs:825:13
[INFO] [stdout]   12:     0x5f31fc4b9938 - std[716c9a7a72e5c14e]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/panicking.rs:698:13
[INFO] [stdout]   13:     0x5f31fc4b1639 - std[716c9a7a72e5c14e]::sys::backtrace::__rust_end_short_backtrace::<std[716c9a7a72e5c14e]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   14:     0x5f31fc4ba15d - __rustc[4f0b026143eab78e]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/panicking.rs:689:5
[INFO] [stdout]   15:     0x5f31fc4dfe1c - core[c5ed12ab89cc536a]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/core/src/panicking.rs:80:14
[INFO] [stdout]   16:     0x5f31fc4dfbf2 - core[c5ed12ab89cc536a]::result::unwrap_failed
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/core/src/result.rs:1867:5
[INFO] [stdout]   17:     0x5f31fc49b4cb - rust_out[31cf89adcf23a82a]::main
[INFO] [stdout]   18:     0x5f31fc49bee3 - <fn() as core[c5ed12ab89cc536a]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]   19:     0x5f31fc49b426 - std[716c9a7a72e5c14e]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stdout]   20:     0x5f31fc49b439 - std[716c9a7a72e5c14e]::rt::lang_start::<()>::{closure#0}
[INFO] [stdout]   21:     0x5f31fc4ca096 - <&dyn core[c5ed12ab89cc536a]::ops::function::Fn<(), Output = i32> + core[c5ed12ab89cc536a]::marker::Sync + core[c5ed12ab89cc536a]::panic::unwind_safe::RefUnwindSafe as core[c5ed12ab89cc536a]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/core/src/ops/function.rs:287:21
[INFO] [stdout]   22:     0x5f31fc4ca096 - std[716c9a7a72e5c14e]::panicking::catch_unwind::do_call::<&dyn core[c5ed12ab89cc536a]::ops::function::Fn<(), Output = i32> + core[c5ed12ab89cc536a]::marker::Sync + core[c5ed12ab89cc536a]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/panicking.rs:581:40
[INFO] [stdout]   23:     0x5f31fc4ca096 - std[716c9a7a72e5c14e]::panicking::catch_unwind::<i32, &dyn core[c5ed12ab89cc536a]::ops::function::Fn<(), Output = i32> + core[c5ed12ab89cc536a]::marker::Sync + core[c5ed12ab89cc536a]::panic::unwind_safe::RefUnwindSafe>
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/panicking.rs:544:19
[INFO] [stdout]   24:     0x5f31fc4ca096 - std[716c9a7a72e5c14e]::panic::catch_unwind::<&dyn core[c5ed12ab89cc536a]::ops::function::Fn<(), Output = i32> + core[c5ed12ab89cc536a]::marker::Sync + core[c5ed12ab89cc536a]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/panic.rs:359:14
[INFO] [stdout]   25:     0x5f31fc4ca096 - std[716c9a7a72e5c14e]::rt::lang_start_internal::{closure#0}
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/rt.rs:175:24
[INFO] [stdout]   26:     0x5f31fc4ca096 - std[716c9a7a72e5c14e]::panicking::catch_unwind::do_call::<std[716c9a7a72e5c14e]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/panicking.rs:581:40
[INFO] [stdout]   27:     0x5f31fc4ca096 - std[716c9a7a72e5c14e]::panicking::catch_unwind::<isize, std[716c9a7a72e5c14e]::rt::lang_start_internal::{closure#0}>
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/panicking.rs:544:19
[INFO] [stdout]   28:     0x5f31fc4ca096 - std[716c9a7a72e5c14e]::panic::catch_unwind::<std[716c9a7a72e5c14e]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/panic.rs:359:14
[INFO] [stdout]   29:     0x5f31fc4ca096 - std[716c9a7a72e5c14e]::rt::lang_start_internal
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/rt.rs:171:5
[INFO] [stdout]   30:     0x5f31fc49b3a1 - std[716c9a7a72e5c14e]::rt::lang_start::<()>
[INFO] [stdout]   31:     0x5f31fc49bf45 - main
[INFO] [stdout]   32:     0x76cc6fbbb1ca - <unknown>
[INFO] [stdout]   33:     0x76cc6fbbb28b - __libc_start_main
[INFO] [stdout]   34:     0x5f31fc49b085 - _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 1.70s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "ca2e81f1bfbaeb528983cb66fb45fe9db9a74628fee15c57ffb0b8a71f71c3e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca2e81f1bfbaeb528983cb66fb45fe9db9a74628fee15c57ffb0b8a71f71c3e5", kill_on_drop: false }`
[INFO] [stdout] ca2e81f1bfbaeb528983cb66fb45fe9db9a74628fee15c57ffb0b8a71f71c3e5
