[INFO] fetching crate rs3a 2.5.0...
[INFO] testing rs3a-2.5.0 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate rs3a 2.5.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate rs3a 2.5.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate rs3a 2.5.0
[INFO] tweaked toml for crates.io crate rs3a 2.5.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rs3a 2.5.0 on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rs3a 2.5.0 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" "+beta-2026-04-21" "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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0d0fdfa545a61e75d1cda7a436d2ea3e7089e6e5625bc44d7253fb4b70b0da97
[INFO] running `Command { std: "docker" "start" "-a" "0d0fdfa545a61e75d1cda7a436d2ea3e7089e6e5625bc44d7253fb4b70b0da97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0d0fdfa545a61e75d1cda7a436d2ea3e7089e6e5625bc44d7253fb4b70b0da97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d0fdfa545a61e75d1cda7a436d2ea3e7089e6e5625bc44d7253fb4b70b0da97", kill_on_drop: false }`
[INFO] [stdout] 0d0fdfa545a61e75d1cda7a436d2ea3e7089e6e5625bc44d7253fb4b70b0da97
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 88aea46cfb7e893cb110a5d50b2580c1ae7f0d0eb4301fde98e2715afbf2450e
[INFO] running `Command { std: "docker" "start" "-a" "88aea46cfb7e893cb110a5d50b2580c1ae7f0d0eb4301fde98e2715afbf2450e", kill_on_drop: false }`
[INFO] [stderr]    Compiling hashbrown v0.16.1
[INFO] [stderr]    Compiling indexmap v2.13.0
[INFO] [stderr]    Compiling ordermap v1.1.0
[INFO] [stderr]    Compiling rs3a v2.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::default`
[INFO] [stdout]  --> src/art.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::default;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Color4`
[INFO] [stdout]   --> src/art.rs:21:33
[INFO] [stdout]    |
[INFO] [stdout] 21 | use crate::{CSSColorMap, Color, Color4};
[INFO] [stdout]    |                                 ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Cell`
[INFO] [stdout]  --> src/colors.rs:6:60
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::{chars::Char, comments::Comments, error::Error, Cell};
[INFO] [stdout]   |                                                            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `slice`
[INFO] [stdout]  --> src/content.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     slice, usize,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.97s
[INFO] running `Command { std: "docker" "inspect" "88aea46cfb7e893cb110a5d50b2580c1ae7f0d0eb4301fde98e2715afbf2450e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88aea46cfb7e893cb110a5d50b2580c1ae7f0d0eb4301fde98e2715afbf2450e", kill_on_drop: false }`
[INFO] [stdout] 88aea46cfb7e893cb110a5d50b2580c1ae7f0d0eb4301fde98e2715afbf2450e
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cea470c1696a20452f7c99ae03c9a8975ca87949d5023f8c1e5bf74d95a09faa
[INFO] running `Command { std: "docker" "start" "-a" "cea470c1696a20452f7c99ae03c9a8975ca87949d5023f8c1e5bf74d95a09faa", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `std::default`
[INFO] [stdout]  --> src/art.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::default;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Color4`
[INFO] [stdout]   --> src/art.rs:21:33
[INFO] [stdout]    |
[INFO] [stdout] 21 | use crate::{CSSColorMap, Color, Color4};
[INFO] [stdout]    |                                 ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Cell`
[INFO] [stdout]  --> src/colors.rs:6:60
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::{chars::Char, comments::Comments, error::Error, Cell};
[INFO] [stdout]   |                                                            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `slice`
[INFO] [stdout]  --> src/content.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     slice, usize,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rs3a v2.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::default`
[INFO] [stdout]  --> src/art.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::default;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Cell`
[INFO] [stdout]  --> src/colors.rs:6:60
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::{chars::Char, comments::Comments, error::Error, Cell};
[INFO] [stdout]   |                                                            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `slice`
[INFO] [stdout]  --> src/content.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     slice, usize,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.58s
[INFO] running `Command { std: "docker" "inspect" "cea470c1696a20452f7c99ae03c9a8975ca87949d5023f8c1e5bf74d95a09faa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cea470c1696a20452f7c99ae03c9a8975ca87949d5023f8c1e5bf74d95a09faa", kill_on_drop: false }`
[INFO] [stdout] cea470c1696a20452f7c99ae03c9a8975ca87949d5023f8c1e5bf74d95a09faa
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 23b72c92e65be0768c2a67159e4a66542028b9affefda7faf7e89f335871a871
[INFO] running `Command { std: "docker" "start" "-a" "23b72c92e65be0768c2a67159e4a66542028b9affefda7faf7e89f335871a871", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::default`
[INFO] [stderr]  --> src/art.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::default;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Color4`
[INFO] [stderr]   --> src/art.rs:21:33
[INFO] [stderr]    |
[INFO] [stderr] 21 | use crate::{CSSColorMap, Color, Color4};
[INFO] [stderr]    |                                 ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Cell`
[INFO] [stderr]  --> src/colors.rs:6:60
[INFO] [stderr]   |
[INFO] [stderr] 6 | use crate::{chars::Char, comments::Comments, error::Error, Cell};
[INFO] [stderr]   |                                                            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `slice`
[INFO] [stderr]  --> src/content.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     slice, usize,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rs3a` (lib) generated 4 warnings (run `cargo fix --lib -p rs3a` to apply 4 suggestions)
[INFO] [stderr] warning: `rs3a` (lib test) generated 3 warnings (3 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rs3a-460b6fd512cd1dce)
[INFO] [stdout] 
[INFO] [stdout] running 16 tests
[INFO] [stdout] test art::fg_and_bg ... ok
[INFO] [stdout] test chars::tests::removes_control_c1_and_c0_except_newline_and_tab ... ok
[INFO] [stdout] test chars::tests::removes_zero_width_and_bidi_and_combining ... ok
[INFO] [stdout] test chars::tests::removes_cr_and_leaves_newline ... ok
[INFO] [stdout] test chars::tests::tabs_and_spaces_normalized ... ok
[INFO] [stdout] test colors::tests::test_all_color4_indices ... ok
[INFO] [stdout] test colors::tests::test_color4_basic_fg_bg ... ok
[INFO] [stdout] test colors::tests::test_color256_sequences ... ok
[INFO] [stdout] test colors::tests::test_none_color_resets ... ok
[INFO] [stdout] test colors::tests::test_rgb_sequences ... ok
[INFO] [stdout] test helpers::tests::unicode_kept ... ok
[INFO] [stdout] test helpers::tests::script_injection_becomes_safe ... ok
[INFO] [stdout] test helpers::tests::already_escaped_becomes_double_escaped ... ok
[INFO] [stdout] test helpers::tests::basic ... ok
[INFO] [stdout] test chars::tests::preserves_other_unicode ... ok
[INFO] [stdout] test chars::tests::example_from_doc ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 16 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rs3a
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 24) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 24) stdout ----
[INFO] [stdout] Test executable failed (exit status: 101).
[INFO] [stdout] 
[INFO] [stdout] stderr:
[INFO] [stdout] 
[INFO] [stdout] thread 'main' (63) panicked at src/lib.rs:22:45:
[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:     0x5b46ba80bada - std[128c3efe2914e152]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5b46ba80bada - std[128c3efe2914e152]::backtrace_rs::backtrace::trace_unsynchronized::<std[128c3efe2914e152]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5b46ba80bada - std[128c3efe2914e152]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x5b46ba80bada - <<std[128c3efe2914e152]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[6771d259883166e6]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x5b46ba81ebea - <core[6771d259883166e6]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x5b46ba81ebea - core[6771d259883166e6]::fmt::write
[INFO] [stdout]    6:     0x5b46ba80f982 - std[128c3efe2914e152]::io::default_write_fmt::<std[128c3efe2914e152]::sys::stdio::unix::Stderr>
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/io/mod.rs:621:11
[INFO] [stdout]    7:     0x5b46ba80f982 - <std[128c3efe2914e152]::sys::stdio::unix::Stderr as std[128c3efe2914e152]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/io/mod.rs:1976:13
[INFO] [stdout]    8:     0x5b46ba7f6f3f - <std[128c3efe2914e152]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x5b46ba7f6f3f - std[128c3efe2914e152]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x5b46ba807731 - std[128c3efe2914e152]::panicking::default_hook
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:319:9
[INFO] [stdout]   11:     0x5b46ba8078eb - std[128c3efe2914e152]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:825:13
[INFO] [stdout]   12:     0x5b46ba7f6ff8 - std[128c3efe2914e152]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:698:13
[INFO] [stdout]   13:     0x5b46ba7ec439 - std[128c3efe2914e152]::sys::backtrace::__rust_end_short_backtrace::<std[128c3efe2914e152]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   14:     0x5b46ba7f795d - __rustc[752cc74e29381ccc]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:689:5
[INFO] [stdout]   15:     0x5b46ba81f37c - core[6771d259883166e6]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/panicking.rs:80:14
[INFO] [stdout]   16:     0x5b46ba81f0f2 - core[6771d259883166e6]::result::unwrap_failed
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/result.rs:1867:5
[INFO] [stdout]   17:     0x5b46ba79472c - rust_out::main::h82fb2350cf581080
[INFO] [stdout]   18:     0x5b46ba786723 - core::ops::function::FnOnce::call_once::ha255b9c9bfd362b0
[INFO] [stdout]   19:     0x5b46ba7863d6 - std::sys::backtrace::__rust_begin_short_backtrace::h2d9a46d63e3b4cf7
[INFO] [stdout]   20:     0x5b46ba786349 - std::rt::lang_start::{{closure}}::ha4a2862521902498
[INFO] [stdout]   21:     0x5b46ba806eb4 - <&dyn core[6771d259883166e6]::ops::function::Fn<(), Output = i32> + core[6771d259883166e6]::marker::Sync + core[6771d259883166e6]::panic::unwind_safe::RefUnwindSafe as core[6771d259883166e6]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/ops/function.rs:287:21
[INFO] [stdout]   22:     0x5b46ba806eb4 - std[128c3efe2914e152]::panicking::catch_unwind::do_call::<&dyn core[6771d259883166e6]::ops::function::Fn<(), Output = i32> + core[6771d259883166e6]::marker::Sync + core[6771d259883166e6]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:581:40
[INFO] [stdout]   23:     0x5b46ba806eb4 - std[128c3efe2914e152]::panicking::catch_unwind::<i32, &dyn core[6771d259883166e6]::ops::function::Fn<(), Output = i32> + core[6771d259883166e6]::marker::Sync + core[6771d259883166e6]::panic::unwind_safe::RefUnwindSafe>
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:544:19
[INFO] [stdout]   24:     0x5b46ba806eb4 - std[128c3efe2914e152]::panic::catch_unwind::<&dyn core[6771d259883166e6]::ops::function::Fn<(), Output = i32> + core[6771d259883166e6]::marker::Sync + core[6771d259883166e6]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panic.rs:359:14
[INFO] [stdout]   25:     0x5b46ba806eb4 - std[128c3efe2914e152]::rt::lang_start_internal::{closure#0}
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/rt.rs:175:24
[INFO] [stdout]   26:     0x5b46ba806eb4 - std[128c3efe2914e152]::panicking::catch_unwind::do_call::<std[128c3efe2914e152]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:581:40
[INFO] [stdout]   27:     0x5b46ba806eb4 - std[128c3efe2914e152]::panicking::catch_unwind::<isize, std[128c3efe2914e152]::rt::lang_start_internal::{closure#0}>
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panicking.rs:544:19
[INFO] [stdout]   28:     0x5b46ba806eb4 - std[128c3efe2914e152]::panic::catch_unwind::<std[128c3efe2914e152]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/panic.rs:359:14
[INFO] [stdout]   29:     0x5b46ba806eb4 - std[128c3efe2914e152]::rt::lang_start_internal
[INFO] [stdout]                                at /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/std/src/rt.rs:171:5
[INFO] [stdout]   30:     0x5b46ba786331 - std::rt::lang_start::h45abc79480616123
[INFO] [stdout]   31:     0x5b46ba795ba5 - main
[INFO] [stdout]   32:     0x744acf4181ca - <unknown>
[INFO] [stdout]   33:     0x744acf41828b - __libc_start_main
[INFO] [stdout]   34:     0x5b46ba783cd5 - _start
[INFO] [stdout]   35:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 24)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.39s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "23b72c92e65be0768c2a67159e4a66542028b9affefda7faf7e89f335871a871", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23b72c92e65be0768c2a67159e4a66542028b9affefda7faf7e89f335871a871", kill_on_drop: false }`
[INFO] [stdout] 23b72c92e65be0768c2a67159e4a66542028b9affefda7faf7e89f335871a871
