[INFO] cloning repository https://github.com/hackingpractise/math_practise
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hackingpractise/math_practise" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhackingpractise%2Fmath_practise", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhackingpractise%2Fmath_practise'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 57d6e056778726671a619a14310c8e88c4bce345
[INFO] testing hackingpractise/math_practise against nightly-2024-10-28+rustflags=-Zrandomize-layout for randomize-layout
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhackingpractise%2Fmath_practise" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hackingpractise/math_practise on toolchain nightly-2024-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hackingpractise/math_practise
[INFO] finished tweaking git repo https://github.com/hackingpractise/math_practise
[INFO] tweaked toml for git repo https://github.com/hackingpractise/math_practise written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/hackingpractise/math_practise 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" "+nightly-2024-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c2aa807abb2a0bb213968b4a9490af63dd0990f18d096d22de39a7fcf1336d70
[INFO] running `Command { std: "docker" "start" "-a" "c2aa807abb2a0bb213968b4a9490af63dd0990f18d096d22de39a7fcf1336d70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c2aa807abb2a0bb213968b4a9490af63dd0990f18d096d22de39a7fcf1336d70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2aa807abb2a0bb213968b4a9490af63dd0990f18d096d22de39a7fcf1336d70", kill_on_drop: false }`
[INFO] [stdout] c2aa807abb2a0bb213968b4a9490af63dd0990f18d096d22de39a7fcf1336d70
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Zrandomize-layout" "-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 56ffcac75b600e85e3167a13eb8d3c0f8867d960fe86a3047470e4c2c3382d7b
[INFO] running `Command { std: "docker" "start" "-a" "56ffcac75b600e85e3167a13eb8d3c0f8867d960fe86a3047470e4c2c3382d7b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling serde v1.0.190
[INFO] [stderr]    Compiling anyhow v1.0.75
[INFO] [stderr]    Compiling ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling serde_json v1.0.107
[INFO] [stderr]    Compiling itoa v1.0.9
[INFO] [stderr]    Compiling ryu v1.0.15
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling getrandom v0.2.8
[INFO] [stderr]    Compiling syn v2.0.38
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling serde_derive v1.0.190
[INFO] [stderr]    Compiling proc_macro2_helper v0.2.9
[INFO] [stderr]    Compiling rand_derive2 v0.1.18
[INFO] [stderr]    Compiling math_practice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.63s
[INFO] running `Command { std: "docker" "inspect" "56ffcac75b600e85e3167a13eb8d3c0f8867d960fe86a3047470e4c2c3382d7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56ffcac75b600e85e3167a13eb8d3c0f8867d960fe86a3047470e4c2c3382d7b", kill_on_drop: false }`
[INFO] [stdout] 56ffcac75b600e85e3167a13eb8d3c0f8867d960fe86a3047470e4c2c3382d7b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Zrandomize-layout" "-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-10-28" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bb080c8ea788f9bda0f3c1ca88eb2ca2e3650ae7e7a8edd1cdbeddbbd1b8d9b5
[INFO] running `Command { std: "docker" "start" "-a" "bb080c8ea788f9bda0f3c1ca88eb2ca2e3650ae7e7a8edd1cdbeddbbd1b8d9b5", kill_on_drop: false }`
[INFO] [stderr]    Compiling math_practice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/record.rs:115:9
[INFO] [stdout]     |
[INFO] [stdout] 115 |         record.add();
[INFO] [stdout]     |         ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 115 |         let _ = record.add();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.27s
[INFO] running `Command { std: "docker" "inspect" "bb080c8ea788f9bda0f3c1ca88eb2ca2e3650ae7e7a8edd1cdbeddbbd1b8d9b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb080c8ea788f9bda0f3c1ca88eb2ca2e3650ae7e7a8edd1cdbeddbbd1b8d9b5", kill_on_drop: false }`
[INFO] [stdout] bb080c8ea788f9bda0f3c1ca88eb2ca2e3650ae7e7a8edd1cdbeddbbd1b8d9b5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Zrandomize-layout" "-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-10-28" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 01640df3b69f9cb4e2d22663bc7acc701b37a3cd8afbb73de28765cfc7412a8d
[INFO] running `Command { std: "docker" "start" "-a" "01640df3b69f9cb4e2d22663bc7acc701b37a3cd8afbb73de28765cfc7412a8d", kill_on_drop: false }`
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/record.rs:115:9
[INFO] [stderr]     |
[INFO] [stderr] 115 |         record.add();
[INFO] [stderr]     |         ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 115 |         let _ = record.add();
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `math_practice` (lib test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/math_practice-ca0cc81b37d4ab2d)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test record::test::write ... FAILED
[INFO] [stdout] test record::test::test_last_entry ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- record::test::write stdout ----
[INFO] [stdout] thread 'record::test::write' panicked at src/record.rs:24:41:
[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:     0x5cdff817edba - std::backtrace_rs::backtrace::libunwind::trace::h207520d6e9873551
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5
[INFO] [stdout]    1:     0x5cdff817edba - std::backtrace_rs::backtrace::trace_unsynchronized::h2ed7433f370e3eca
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x5cdff817edba - std::sys::backtrace::_print_fmt::h916fac51166b18d7
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x5cdff817edba - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::ha0a4c9b8ce3802e6
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x5cdff81a5f13 - core::fmt::rt::Argument::fmt::h4cfc8587d52b3eb5
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/core/src/fmt/rt.rs:177:76
[INFO] [stdout]    5:     0x5cdff81a5f13 - core::fmt::write::h522cc39e5b36ae9f
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/core/src/fmt/mod.rs:1190:21
[INFO] [stdout]    6:     0x5cdff817b853 - std::io::Write::write_fmt::h7d3c26752da97734
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/std/src/io/mod.rs:1839:15
[INFO] [stdout]    7:     0x5cdff817ec02 - std::sys::backtrace::BacktraceLock::print::h4b9e00b29e9c0942
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    8:     0x5cdff818024a - std::panicking::default_hook::{{closure}}::hb59b88280d0324d9
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/std/src/panicking.rs:268:22
[INFO] [stdout]    9:     0x5cdff8180054 - std::panicking::default_hook::he1dd496665be4a29
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/std/src/panicking.rs:292:9
[INFO] [stdout]   10:     0x5cdff80f85a9 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h4ff71de18744e1dc
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/alloc/src/boxed.rs:2468:9
[INFO] [stdout]   11:     0x5cdff80f85a9 - test::test_main::{{closure}}::hcf7c055ce117aa81
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/test/src/lib.rs:133:21
[INFO] [stdout]   12:     0x5cdff8180948 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h1d66c6bbd60c9692
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/alloc/src/boxed.rs:2468:9
[INFO] [stdout]   13:     0x5cdff8180948 - std::panicking::rust_panic_with_hook::h2ff17fe8f26dfcf8
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/std/src/panicking.rs:809:13
[INFO] [stdout]   14:     0x5cdff818070a - std::panicking::begin_panic_handler::{{closure}}::h4fad77951c07e101
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/std/src/panicking.rs:674:13
[INFO] [stdout]   15:     0x5cdff817f299 - std::sys::backtrace::__rust_end_short_backtrace::hb1a25b3da5d0ea08
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/std/src/sys/backtrace.rs:170:18
[INFO] [stdout]   16:     0x5cdff818039c - rust_begin_unwind
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/std/src/panicking.rs:665:5
[INFO] [stdout]   17:     0x5cdff81a43d0 - core::panicking::panic_fmt::ha9db07b529f9b256
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/core/src/panicking.rs:75:14
[INFO] [stdout]   18:     0x5cdff81a4816 - core::result::unwrap_failed::h5e8218e4d4338b8a
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/core/src/result.rs:1698:5
[INFO] [stdout]   19:     0x5cdff80bc280 - core::result::Result<T,E>::unwrap::h4cad5d20bb2c9d77
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/core/src/result.rs:1103:23
[INFO] [stdout]   20:     0x5cdff80bc280 - math_practice::record::Record::add::h6b62ac4483c6d92d
[INFO] [stdout]                                at /opt/rustwide/workdir/src/record.rs:24:13
[INFO] [stdout]   21:     0x5cdff80afe7f - math_practice::record::test::write::h79892fa19fff7e92
[INFO] [stdout]                                at /opt/rustwide/workdir/src/record.rs:115:9
[INFO] [stdout]   22:     0x5cdff80afe27 - math_practice::record::test::write::{{closure}}::h9b69d402522d2aeb
[INFO] [stdout]                                at /opt/rustwide/workdir/src/record.rs:108:15
[INFO] [stdout]   23:     0x5cdff80ab0b6 - core::ops::function::FnOnce::call_once::hb746d3daa7669f48
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x5cdff80fce7b - core::ops::function::FnOnce::call_once::h22c3ba5715e93f05
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x5cdff80fce7b - test::__rust_begin_short_backtrace::h8e82d8113d0da17f
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/test/src/lib.rs:621:18
[INFO] [stdout]   26:     0x5cdff80fc7f7 - test::run_test_in_process::{{closure}}::h33235f4f20b7b7c7
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/test/src/lib.rs:644:60
[INFO] [stdout]   27:     0x5cdff80fc7f7 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hb5043206310c586f
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   28:     0x5cdff80fc7f7 - std::panicking::try::do_call::h9ad4731a60ab23e2
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/std/src/panicking.rs:557:40
[INFO] [stdout]   29:     0x5cdff80fc7f7 - std::panicking::try::h3824d23db772a716
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/std/src/panicking.rs:520:19
[INFO] [stdout]   30:     0x5cdff80fc7f7 - std::panic::catch_unwind::h5afd514605fde46b
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/std/src/panic.rs:358:14
[INFO] [stdout]   31:     0x5cdff80fc7f7 - test::run_test_in_process::h0d5cbfa7067d1720
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/test/src/lib.rs:644:27
[INFO] [stdout]   32:     0x5cdff80fc7f7 - test::run_test::{{closure}}::h708eb8872708115d
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/test/src/lib.rs:565:43
[INFO] [stdout]   33:     0x5cdff80bff14 - test::run_test::{{closure}}::h392c51cee94713ab
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/test/src/lib.rs:595:41
[INFO] [stdout]   34:     0x5cdff80bff14 - std::sys::backtrace::__rust_begin_short_backtrace::h2f40290710935a8b
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/std/src/sys/backtrace.rs:154:18
[INFO] [stdout]   35:     0x5cdff80c36be - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h3fd968d89053a903
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/std/src/thread/mod.rs:541:17
[INFO] [stdout]   36:     0x5cdff80c36be - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h743f637ba4229880
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   37:     0x5cdff80c36be - std::panicking::try::do_call::h07440897322525a6
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/std/src/panicking.rs:557:40
[INFO] [stdout]   38:     0x5cdff80c36be - std::panicking::try::he5a2e00188156637
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/std/src/panicking.rs:520:19
[INFO] [stdout]   39:     0x5cdff80c36be - std::panic::catch_unwind::hbaf3cae49b3c6433
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/std/src/panic.rs:358:14
[INFO] [stdout]   40:     0x5cdff80c36be - std::thread::Builder::spawn_unchecked_::{{closure}}::h8e141ea224820bce
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/std/src/thread/mod.rs:540:30
[INFO] [stdout]   41:     0x5cdff80c36be - core::ops::function::FnOnce::call_once{{vtable.shim}}::h90d312fedd7b8ea8
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x5cdff818474b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h69aa08ddb6adb8b6
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/alloc/src/boxed.rs:2454:9
[INFO] [stdout]   43:     0x5cdff818474b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h5aa36efdb79c806f
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/alloc/src/boxed.rs:2454:9
[INFO] [stdout]   44:     0x5cdff818474b - std::sys::pal::unix::thread::Thread::new::thread_start::h6cd80a1b4be5158d
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/std/src/sys/pal/unix/thread.rs:105:17
[INFO] [stdout]   45:     0x7993afdbdac3 - <unknown>
[INFO] [stdout]   46:     0x7993afe4ea04 - clone
[INFO] [stdout]   47:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- record::test::test_last_entry stdout ----
[INFO] [stdout] thread 'record::test::test_last_entry' panicked at src/record.rs:24:41:
[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:     0x5cdff817edba - std::backtrace_rs::backtrace::libunwind::trace::h207520d6e9873551
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5
[INFO] [stdout]    1:     0x5cdff817edba - std::backtrace_rs::backtrace::trace_unsynchronized::h2ed7433f370e3eca
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x5cdff817edba - std::sys::backtrace::_print_fmt::h916fac51166b18d7
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x5cdff817edba - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::ha0a4c9b8ce3802e6
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x5cdff81a5f13 - core::fmt::rt::Argument::fmt::h4cfc8587d52b3eb5
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/core/src/fmt/rt.rs:177:76
[INFO] [stdout]    5:     0x5cdff81a5f13 - core::fmt::write::h522cc39e5b36ae9f
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/core/src/fmt/mod.rs:1190:21
[INFO] [stdout]    6:     0x5cdff817b853 - std::io::Write::write_fmt::h7d3c26752da97734
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/std/src/io/mod.rs:1839:15
[INFO] [stdout]    7:     0x5cdff817ec02 - std::sys::backtrace::BacktraceLock::print::h4b9e00b29e9c0942
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    8:     0x5cdff818024a - std::panicking::default_hook::{{closure}}::hb59b88280d0324d9
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/std/src/panicking.rs:268:22
[INFO] [stdout]    9:     0x5cdff8180054 - std::panicking::default_hook::he1dd496665be4a29
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/std/src/panicking.rs:292:9
[INFO] [stdout]   10:     0x5cdff80f85a9 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h4ff71de18744e1dc
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/alloc/src/boxed.rs:2468:9
[INFO] [stdout]   11:     0x5cdff80f85a9 - test::test_main::{{closure}}::hcf7c055ce117aa81
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/test/src/lib.rs:133:21
[INFO] [stdout]   12:     0x5cdff8180948 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h1d66c6bbd60c9692
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/alloc/src/boxed.rs:2468:9
[INFO] [stdout]   13:     0x5cdff8180948 - std::panicking::rust_panic_with_hook::h2ff17fe8f26dfcf8
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/std/src/panicking.rs:809:13
[INFO] [stdout]   14:     0x5cdff818070a - std::panicking::begin_panic_handler::{{closure}}::h4fad77951c07e101
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/std/src/panicking.rs:674:13
[INFO] [stdout]   15:     0x5cdff817f299 - std::sys::backtrace::__rust_end_short_backtrace::hb1a25b3da5d0ea08
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/std/src/sys/backtrace.rs:170:18
[INFO] [stdout]   16:     0x5cdff818039c - rust_begin_unwind
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/std/src/panicking.rs:665:5
[INFO] [stdout]   17:     0x5cdff81a43d0 - core::panicking::panic_fmt::ha9db07b529f9b256
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/core/src/panicking.rs:75:14
[INFO] [stdout]   18:     0x5cdff81a4816 - core::result::unwrap_failed::h5e8218e4d4338b8a
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/core/src/result.rs:1698:5
[INFO] [stdout]   19:     0x5cdff80bc280 - core::result::Result<T,E>::unwrap::h4cad5d20bb2c9d77
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/core/src/result.rs:1103:23
[INFO] [stdout]   20:     0x5cdff80bc280 - math_practice::record::Record::add::h6b62ac4483c6d92d
[INFO] [stdout]                                at /opt/rustwide/workdir/src/record.rs:24:13
[INFO] [stdout]   21:     0x5cdff80afee7 - math_practice::record::test::test_last_entry::ha959295a19cce017
[INFO] [stdout]                                at /opt/rustwide/workdir/src/record.rs:120:9
[INFO] [stdout]   22:     0x5cdff80afeb7 - math_practice::record::test::test_last_entry::{{closure}}::h305b8aefd4ecfd66
[INFO] [stdout]                                at /opt/rustwide/workdir/src/record.rs:118:25
[INFO] [stdout]   23:     0x5cdff80ab006 - core::ops::function::FnOnce::call_once::h45c9949a90685d47
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x5cdff80fce7b - core::ops::function::FnOnce::call_once::h22c3ba5715e93f05
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x5cdff80fce7b - test::__rust_begin_short_backtrace::h8e82d8113d0da17f
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/test/src/lib.rs:621:18
[INFO] [stdout]   26:     0x5cdff80fc7f7 - test::run_test_in_process::{{closure}}::h33235f4f20b7b7c7
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/test/src/lib.rs:644:60
[INFO] [stdout]   27:     0x5cdff80fc7f7 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hb5043206310c586f
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   28:     0x5cdff80fc7f7 - std::panicking::try::do_call::h9ad4731a60ab23e2
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/std/src/panicking.rs:557:40
[INFO] [stdout]   29:     0x5cdff80fc7f7 - std::panicking::try::h3824d23db772a716
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/std/src/panicking.rs:520:19
[INFO] [stdout]   30:     0x5cdff80fc7f7 - std::panic::catch_unwind::h5afd514605fde46b
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/std/src/panic.rs:358:14
[INFO] [stdout]   31:     0x5cdff80fc7f7 - test::run_test_in_process::h0d5cbfa7067d1720
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/test/src/lib.rs:644:27
[INFO] [stdout]   32:     0x5cdff80fc7f7 - test::run_test::{{closure}}::h708eb8872708115d
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/test/src/lib.rs:565:43
[INFO] [stdout]   33:     0x5cdff80bff14 - test::run_test::{{closure}}::h392c51cee94713ab
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/test/src/lib.rs:595:41
[INFO] [stdout]   34:     0x5cdff80bff14 - std::sys::backtrace::__rust_begin_short_backtrace::h2f40290710935a8b
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/std/src/sys/backtrace.rs:154:18
[INFO] [stdout]   35:     0x5cdff80c36be - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h3fd968d89053a903
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/std/src/thread/mod.rs:541:17
[INFO] [stdout]   36:     0x5cdff80c36be - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h743f637ba4229880
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   37:     0x5cdff80c36be - std::panicking::try::do_call::h07440897322525a6
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/std/src/panicking.rs:557:40
[INFO] [stdout]   38:     0x5cdff80c36be - std::panicking::try::he5a2e00188156637
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/std/src/panicking.rs:520:19
[INFO] [stdout]   39:     0x5cdff80c36be - std::panic::catch_unwind::hbaf3cae49b3c6433
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/std/src/panic.rs:358:14
[INFO] [stdout]   40:     0x5cdff80c36be - std::thread::Builder::spawn_unchecked_::{{closure}}::h8e141ea224820bce
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/std/src/thread/mod.rs:540:30
[INFO] [stdout]   41:     0x5cdff80c36be - core::ops::function::FnOnce::call_once{{vtable.shim}}::h90d312fedd7b8ea8
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x5cdff818474b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h69aa08ddb6adb8b6
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/alloc/src/boxed.rs:2454:9
[INFO] [stdout]   43:     0x5cdff818474b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h5aa36efdb79c806f
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/alloc/src/boxed.rs:2454:9
[INFO] [stdout]   44:     0x5cdff818474b - std::sys::pal::unix::thread::Thread::new::thread_start::h6cd80a1b4be5158d
[INFO] [stdout]                                at /rustc/df4ca44d3fbc9301ee17f30f4d474e6ae4b05252/library/std/src/sys/pal/unix/thread.rs:105:17
[INFO] [stdout]   45:     0x7993afdbdac3 - <unknown>
[INFO] [stdout]   46:     0x7993afe4ea04 - clone
[INFO] [stdout]   47:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     record::test::test_last_entry
[INFO] [stdout]     record::test::write
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] running `Command { std: "docker" "inspect" "01640df3b69f9cb4e2d22663bc7acc701b37a3cd8afbb73de28765cfc7412a8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01640df3b69f9cb4e2d22663bc7acc701b37a3cd8afbb73de28765cfc7412a8d", kill_on_drop: false }`
[INFO] [stdout] 01640df3b69f9cb4e2d22663bc7acc701b37a3cd8afbb73de28765cfc7412a8d
