[INFO] fetching crate collatz_rust 0.2.0...
[INFO] testing collatz_rust-0.2.0 against 1.82.0 for beta-1.83-1
[INFO] extracting crate collatz_rust 0.2.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate collatz_rust 0.2.0 on toolchain 1.82.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.82.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate collatz_rust 0.2.0
[INFO] finished tweaking crates.io crate collatz_rust 0.2.0
[INFO] tweaked toml for crates.io crate collatz_rust 0.2.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate collatz_rust 0.2.0 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" "+1.82.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded az v1.2.1
[INFO] [stderr]   Downloaded rug v1.26.1
[INFO] [stderr]   Downloaded gmp-mpfr-sys v1.6.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+1.82.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bf2233e981fa1028f731498e9485073812203e87a1b1d86743316e0332eb59eb
[INFO] running `Command { std: "docker" "start" "-a" "bf2233e981fa1028f731498e9485073812203e87a1b1d86743316e0332eb59eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bf2233e981fa1028f731498e9485073812203e87a1b1d86743316e0332eb59eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf2233e981fa1028f731498e9485073812203e87a1b1d86743316e0332eb59eb", kill_on_drop: false }`
[INFO] [stdout] bf2233e981fa1028f731498e9485073812203e87a1b1d86743316e0332eb59eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+1.82.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 10e3b2965f61256b5f922a873437c37a5c5add7d8d4f602ebe29033ea7ced63b
[INFO] running `Command { std: "docker" "start" "-a" "10e3b2965f61256b5f922a873437c37a5c5add7d8d4f602ebe29033ea7ced63b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling libc v0.2.159
[INFO] [stderr]    Compiling crossbeam-utils v0.8.20
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling gmp-mpfr-sys v1.6.4
[INFO] [stderr]    Compiling rayon-core v1.12.1
[INFO] [stderr]    Compiling libm v0.2.8
[INFO] [stderr]    Compiling unicode-segmentation v1.12.0
[INFO] [stderr]    Compiling az v1.2.1
[INFO] [stderr]    Compiling regex-syntax v0.8.5
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling rug v1.26.1
[INFO] [stderr]    Compiling anyhow v1.0.89
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling csv-core v0.1.11
[INFO] [stderr]    Compiling log v0.4.22
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling termcolor v1.4.1
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling itertools v0.11.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling crossbeam-deque v0.8.5
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling is-terminal v0.4.13
[INFO] [stderr]    Compiling syn v2.0.79
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling regex-automata v0.4.8
[INFO] [stderr]    Compiling rayon v1.10.0
[INFO] [stderr]    Compiling serde_derive v1.0.210
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]    Compiling regex v1.11.0
[INFO] [stderr]    Compiling env_logger v0.10.2
[INFO] [stderr]    Compiling structopt v0.3.26
[INFO] [stderr]    Compiling serde v1.0.210
[INFO] [stderr]    Compiling csv v1.3.0
[INFO] [stderr]    Compiling collatz_rust v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2m 03s
[INFO] running `Command { std: "docker" "inspect" "10e3b2965f61256b5f922a873437c37a5c5add7d8d4f602ebe29033ea7ced63b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10e3b2965f61256b5f922a873437c37a5c5add7d8d4f602ebe29033ea7ced63b", kill_on_drop: false }`
[INFO] [stdout] 10e3b2965f61256b5f922a873437c37a5c5add7d8d4f602ebe29033ea7ced63b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+1.82.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3b1b7783be6952811bfb0a77914493af8238380431106bbccf1a286be2f91911
[INFO] running `Command { std: "docker" "start" "-a" "3b1b7783be6952811bfb0a77914493af8238380431106bbccf1a286be2f91911", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustix v0.38.37
[INFO] [stderr]    Compiling fastrand v2.1.1
[INFO] [stderr]    Compiling once_cell v1.20.1
[INFO] [stderr]    Compiling tempfile v3.13.0
[INFO] [stderr]    Compiling collatz_rust v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 3.55s
[INFO] running `Command { std: "docker" "inspect" "3b1b7783be6952811bfb0a77914493af8238380431106bbccf1a286be2f91911", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b1b7783be6952811bfb0a77914493af8238380431106bbccf1a286be2f91911", kill_on_drop: false }`
[INFO] [stdout] 3b1b7783be6952811bfb0a77914493af8238380431106bbccf1a286be2f91911
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+1.82.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1fe5e3777834d6b9c9a24fa31bb6d8aa9e5dfac0f9ac5a797bcf619bf1b12258
[INFO] running `Command { std: "docker" "start" "-a" "1fe5e3777834d6b9c9a24fa31bb6d8aa9e5dfac0f9ac5a797bcf619bf1b12258", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/collatz_rust-bca73fbbb2198023)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test collatz::tests::test_collatz_step ... ok
[INFO] [stdout] test collatz::tests::test_extended_collatz ... ok
[INFO] [stdout] test parse::tests::test_args_parse ... ok
[INFO] [stdout] test write::tests::test_write_table ... ok
[INFO] [stdout] test write::tests::test_write_cycle ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- write::tests::test_write_cycle stdout ----
[INFO] [stdout] thread 'write::tests::test_write_cycle' panicked at src/write.rs:108:48:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: Failed to create CSV writer
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]     No such file or directory (os error 2)
[INFO] [stdout] 
[INFO] [stdout] Stack backtrace:
[INFO] [stdout]    0: <E as anyhow::context::ext::StdError>::ext_context
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/anyhow-1.0.89/src/backtrace.rs:27:14
[INFO] [stdout]    1: anyhow::context::<impl anyhow::Context<T,E> for core::result::Result<T,E>>::context
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/anyhow-1.0.89/src/context.rs:54:31
[INFO] [stdout]    2: collatz_rust::write::write_cycle
[INFO] [stdout]              at /opt/rustwide/workdir/src/write.rs:53:19
[INFO] [stdout]    3: collatz_rust::write::tests::test_write_cycle
[INFO] [stdout]              at /opt/rustwide/workdir/src/write.rs:108:9
[INFO] [stdout]    4: collatz_rust::write::tests::test_write_cycle::{{closure}}
[INFO] [stdout]              at /opt/rustwide/workdir/src/write.rs:96:26
[INFO] [stdout]    5: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/core/src/ops/function.rs:250:5
[INFO] [stdout]    6: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/core/src/ops/function.rs:250:5
[INFO] [stdout]    7: test::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/test/src/lib.rs:620:18
[INFO] [stdout]    8: test::run_test_in_process::{{closure}}
[INFO] [stdout]              at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/test/src/lib.rs:643:60
[INFO] [stdout]    9: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   10: std::panicking::try::do_call
[INFO] [stdout]              at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/panicking.rs:554:40
[INFO] [stdout]   11: std::panicking::try
[INFO] [stdout]              at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/panicking.rs:518:19
[INFO] [stdout]   12: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/panic.rs:345:14
[INFO] [stdout]   13: test::run_test_in_process
[INFO] [stdout]              at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/test/src/lib.rs:643:27
[INFO] [stdout]   14: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/test/src/lib.rs:564:43
[INFO] [stdout]   15: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/test/src/lib.rs:594:41
[INFO] [stdout]   16: std::sys::backtrace::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/sys/backtrace.rs:154:18
[INFO] [stdout]   17: std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}
[INFO] [stdout]              at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/thread/mod.rs:522:17
[INFO] [stdout]   18: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   19: std::panicking::try::do_call
[INFO] [stdout]              at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/panicking.rs:554:40
[INFO] [stdout]   20: std::panicking::try
[INFO] [stdout]              at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/panicking.rs:518:19
[INFO] [stdout]   21: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/panic.rs:345:14
[INFO] [stdout]   22: std::thread::Builder::spawn_unchecked_::{{closure}}
[INFO] [stdout]              at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/thread/mod.rs:521:30
[INFO] [stdout]   23: core::ops::function::FnOnce::call_once{{vtable.shim}}
[INFO] [stdout]              at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
[INFO] [stdout]              at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/alloc/src/boxed.rs:2231:9
[INFO] [stdout]   25: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
[INFO] [stdout]              at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/alloc/src/boxed.rs:2231:9
[INFO] [stdout]   26: std::sys::pal::unix::thread::Thread::new::thread_start
[INFO] [stdout]              at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/sys/pal/unix/thread.rs:105:17
[INFO] [stdout]   27: <unknown>
[INFO] [stdout]   28: clone
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5a6550dfde0a - std::backtrace_rs::backtrace::libunwind::trace::h99efb0985cae5d78
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5
[INFO] [stdout]    1:     0x5a6550dfde0a - std::backtrace_rs::backtrace::trace_unsynchronized::he2c1aa63b3f7fad8
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x5a6550dfde0a - std::sys::backtrace::_print_fmt::h8a221d40f5e0f88b
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x5a6550dfde0a - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h304520fd6a30aa07
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x5a6550e25e8b - core::fmt::rt::Argument::fmt::h5da9c218ec984eaf
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/core/src/fmt/rt.rs:177:76
[INFO] [stdout]    5:     0x5a6550e25e8b - core::fmt::write::hf5713710ce10ff22
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/core/src/fmt/mod.rs:1178:21
[INFO] [stdout]    6:     0x5a6550dfa6b3 - std::io::Write::write_fmt::h786683024e26df0d
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/io/mod.rs:1823:15
[INFO] [stdout]    7:     0x5a6550dff612 - std::sys::backtrace::BacktraceLock::print::hbcdbec4d97c91528
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    8:     0x5a6550dff612 - std::panicking::default_hook::{{closure}}::he1ad87607d0c11c5
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/panicking.rs:266:22
[INFO] [stdout]    9:     0x5a6550dff153 - std::panicking::default_hook::h81c8cd2e7c59ee33
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/panicking.rs:290:9
[INFO] [stdout]   10:     0x5a6550c82fb9 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h6ef31d9fe3b4da7d
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/alloc/src/boxed.rs:2245:9
[INFO] [stdout]   11:     0x5a6550c82fb9 - test::test_main::{{closure}}::h97736fed204a235d
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/test/src/lib.rs:132:21
[INFO] [stdout]   12:     0x5a6550dffed2 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h375ef7f99b271d16
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/alloc/src/boxed.rs:2245:9
[INFO] [stdout]   13:     0x5a6550dffed2 - std::panicking::rust_panic_with_hook::had2118629c312a4a
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/panicking.rs:805:13
[INFO] [stdout]   14:     0x5a6550dffb87 - std::panicking::begin_panic_handler::{{closure}}::h7fa5985d111bafa2
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/panicking.rs:671:13
[INFO] [stdout]   15:     0x5a6550dfe2e9 - std::sys::backtrace::__rust_end_short_backtrace::h704d151dbefa09c5
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/sys/backtrace.rs:170:18
[INFO] [stdout]   16:     0x5a6550dff814 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/panicking.rs:662:5
[INFO] [stdout]   17:     0x5a6550c0a303 - core::panicking::panic_fmt::h3eea515d05f7a35e
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/core/src/panicking.rs:74:14
[INFO] [stdout]   18:     0x5a6550c0a816 - core::result::unwrap_failed::h7c8d8bbbcf45dc13
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/core/src/result.rs:1677:5
[INFO] [stdout]   19:     0x5a6550c377ec - core::result::Result<T,E>::unwrap::h7d2f42376e9143e0
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/core/src/result.rs:1102:23
[INFO] [stdout]   20:     0x5a6550c377ec - collatz_rust::write::tests::test_write_cycle::h4160b359293558eb
[INFO] [stdout]                                at /opt/rustwide/workdir/src/write.rs:108:9
[INFO] [stdout]   21:     0x5a6550c370b7 - collatz_rust::write::tests::test_write_cycle::{{closure}}::hbe45d1d6d0ce7e57
[INFO] [stdout]                                at /opt/rustwide/workdir/src/write.rs:96:26
[INFO] [stdout]   22:     0x5a6550c31436 - core::ops::function::FnOnce::call_once::h41e4180a220e897c
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x5a6550c878bb - core::ops::function::FnOnce::call_once::h8cb4701a559728b6
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x5a6550c878bb - test::__rust_begin_short_backtrace::hbd02dbd41797127f
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/test/src/lib.rs:620:18
[INFO] [stdout]   25:     0x5a6550c871a8 - test::run_test_in_process::{{closure}}::h9b9c40b959cf4b0a
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/test/src/lib.rs:643:60
[INFO] [stdout]   26:     0x5a6550c871a8 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h80ca0f237bf0daa4
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   27:     0x5a6550c871a8 - std::panicking::try::do_call::h74ee75d3e2d7ba36
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/panicking.rs:554:40
[INFO] [stdout]   28:     0x5a6550c871a8 - std::panicking::try::h2ae7db1dc2a281fc
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/panicking.rs:518:19
[INFO] [stdout]   29:     0x5a6550c871a8 - std::panic::catch_unwind::h25732d5472f1001d
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/panic.rs:345:14
[INFO] [stdout]   30:     0x5a6550c871a8 - test::run_test_in_process::h1e17135aacb29db6
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/test/src/lib.rs:643:27
[INFO] [stdout]   31:     0x5a6550c871a8 - test::run_test::{{closure}}::h65f9c94bff1a7861
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/test/src/lib.rs:564:43
[INFO] [stdout]   32:     0x5a6550c4c574 - test::run_test::{{closure}}::ha23ee43b6be2939d
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/test/src/lib.rs:594:41
[INFO] [stdout]   33:     0x5a6550c4c574 - std::sys::backtrace::__rust_begin_short_backtrace::h160ed2f20abbd124
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/sys/backtrace.rs:154:18
[INFO] [stdout]   34:     0x5a6550c4fc22 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h076d93a5dd61b367
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/thread/mod.rs:522:17
[INFO] [stdout]   35:     0x5a6550c4fc22 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hb7dffecae4d2a0df
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   36:     0x5a6550c4fc22 - std::panicking::try::do_call::h425c243d1cd119a5
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/panicking.rs:554:40
[INFO] [stdout]   37:     0x5a6550c4fc22 - std::panicking::try::h5ff57b1fa4d0634d
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/panicking.rs:518:19
[INFO] [stdout]   38:     0x5a6550c4fc22 - std::panic::catch_unwind::h69dc0395c7d606c8
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/panic.rs:345:14
[INFO] [stdout]   39:     0x5a6550c4fc22 - std::thread::Builder::spawn_unchecked_::{{closure}}::hd987ad26725d6b64
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/thread/mod.rs:521:30
[INFO] [stdout]   40:     0x5a6550c4fc22 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h262984108de629b4
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   41:     0x5a6550e049bb - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hd6eefa32c9acf934
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/alloc/src/boxed.rs:2231:9
[INFO] [stdout]   42:     0x5a6550e049bb - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h6bca3a1f077b8c81
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/alloc/src/boxed.rs:2231:9
[INFO] [stdout]   43:     0x5a6550e049bb - std::sys::pal::unix::thread::Thread::new::thread_start::hcdbd1049068002f4
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/sys/pal/unix/thread.rs:105:17
[INFO] [stdout]   44:     0x766392a37ac3 - <unknown>
[INFO] [stdout]   45:     0x766392ac8a04 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     write::tests::test_write_cycle
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 4 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--bin collatz_rust`
[INFO] running `Command { std: "docker" "inspect" "1fe5e3777834d6b9c9a24fa31bb6d8aa9e5dfac0f9ac5a797bcf619bf1b12258", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1fe5e3777834d6b9c9a24fa31bb6d8aa9e5dfac0f9ac5a797bcf619bf1b12258", kill_on_drop: false }`
[INFO] [stdout] 1fe5e3777834d6b9c9a24fa31bb6d8aa9e5dfac0f9ac5a797bcf619bf1b12258