[INFO] fetching crate fast-neural-network 0.7.0...
[INFO] testing fast-neural-network-0.7.0 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate fast-neural-network 0.7.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate fast-neural-network 0.7.0
[INFO] finished tweaking crates.io crate fast-neural-network 0.7.0
[INFO] tweaked toml for crates.io crate fast-neural-network 0.7.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate fast-neural-network 0.7.0 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate fast-neural-network 0.7.0 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-2025-09-21" "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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 40ba0e41cc9c6b06c673486346407627c3cf4aa48b2791b0bd35e50ca79dc8e9
[INFO] running `Command { std: "docker" "start" "-a" "40ba0e41cc9c6b06c673486346407627c3cf4aa48b2791b0bd35e50ca79dc8e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "40ba0e41cc9c6b06c673486346407627c3cf4aa48b2791b0bd35e50ca79dc8e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40ba0e41cc9c6b06c673486346407627c3cf4aa48b2791b0bd35e50ca79dc8e9", kill_on_drop: false }`
[INFO] [stdout] 40ba0e41cc9c6b06c673486346407627c3cf4aa48b2791b0bd35e50ca79dc8e9
[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=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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e4a83cde9fbc8a0f48aeb881786fca8f0337a6eb5738e931c175bb973308a906
[INFO] running `Command { std: "docker" "start" "-a" "e4a83cde9fbc8a0f48aeb881786fca8f0337a6eb5738e931c175bb973308a906", kill_on_drop: false }`
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[INFO] [stderr]    Compiling fast-neural-network v0.7.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 01s
[INFO] running `Command { std: "docker" "inspect" "e4a83cde9fbc8a0f48aeb881786fca8f0337a6eb5738e931c175bb973308a906", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4a83cde9fbc8a0f48aeb881786fca8f0337a6eb5738e931c175bb973308a906", kill_on_drop: false }`
[INFO] [stdout] e4a83cde9fbc8a0f48aeb881786fca8f0337a6eb5738e931c175bb973308a906
[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=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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f2b648e9f00d9f9d9996f1d9c067c3727b934bf8e36ac13a6898cb12214f6762
[INFO] running `Command { std: "docker" "start" "-a" "f2b648e9f00d9f9d9996f1d9c067c3727b934bf8e36ac13a6898cb12214f6762", kill_on_drop: false }`
[INFO] [stderr]    Compiling either v1.13.0
[INFO] [stderr]    Compiling num-traits v0.2.19
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[INFO] [stderr]    Compiling criterion v0.5.1
[INFO] [stderr]    Compiling fast-neural-network v0.7.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 40.62s
[INFO] running `Command { std: "docker" "inspect" "f2b648e9f00d9f9d9996f1d9c067c3727b934bf8e36ac13a6898cb12214f6762", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2b648e9f00d9f9d9996f1d9c067c3727b934bf8e36ac13a6898cb12214f6762", kill_on_drop: false }`
[INFO] [stdout] f2b648e9f00d9f9d9996f1d9c067c3727b934bf8e36ac13a6898cb12214f6762
[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=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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 090ccf62c03b76f84a43162dd94c4910afc5b68553271db612e98d2757280fc3
[INFO] running `Command { std: "docker" "start" "-a" "090ccf62c03b76f84a43162dd94c4910afc5b68553271db612e98d2757280fc3", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/fast_neural_network-09caf2d7903c8ce0)
[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 unittests src/main.rs (/opt/rustwide/target/debug/deps/fast_neural_network-b45de72a72b613b7)
[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]    Doc-tests fast_neural_network
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test src/neural_network.rs - neural_network::Network::train (line 437) ... ok
[INFO] [stdout] test src/neural_network.rs - neural_network::Network::forward (line 339) ... FAILED
[INFO] [stdout] test src/neural_network.rs - neural_network::Layer::from_vec (line 46) ... ok
[INFO] [stdout] test src/neural_network.rs - neural_network::Network::load (line 140) ... ok
[INFO] [stdout] test src/neural_network.rs - neural_network::Layer::new (line 28) ... ok
[INFO] [stdout] test src/neural_network.rs - neural_network::Network::new (line 80) ... ok
[INFO] [stdout] test src/neural_network.rs - neural_network::Network::new_with_layers (line 107) ... ok
[INFO] [stdout] test src/neural_network.rs - neural_network::Network::add_hidden_layer_with_size (line 182) ... ok
[INFO] [stdout] test src/neural_network.rs - neural_network::Network::compile (line 198) ... ok
[INFO] [stdout] test src/neural_network.rs - neural_network::Network::save (line 153) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 7) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/neural_network.rs - neural_network::Network::forward (line 339) stdout ----
[INFO] [stdout] error: cannot find macro `array` in this scope
[INFO] [stdout]  --> src/neural_network.rs:346:35
[INFO] [stdout]   |
[INFO] [stdout] 9 | let prediction = network.forward(&array![2., 1., -1.]);
[INFO] [stdout]   |                                   ^^^^^
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this macro
[INFO] [stdout]   |
[INFO] [stdout] 2 + use ndarray::array;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Network`
[INFO] [stdout]  --> src/neural_network.rs:342:19
[INFO] [stdout]   |
[INFO] [stdout] 5 | let mut network = Network::new(3, 1, ActivationType::Relu, 0.005);
[INFO] [stdout]   |                   ^^^^^^^ use of undeclared type `Network`
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]   |
[INFO] [stdout] 2 + use fast_neural_network::neural_network::Network;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `ActivationType`
[INFO] [stdout]  --> src/neural_network.rs:342:38
[INFO] [stdout]   |
[INFO] [stdout] 5 | let mut network = Network::new(3, 1, ActivationType::Relu, 0.005);
[INFO] [stdout]   |                                      ^^^^^^^^^^^^^^ use of undeclared type `ActivationType`
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this enum
[INFO] [stdout]   |
[INFO] [stdout] 2 + use fast_neural_network::activation::ActivationType;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/neural_network.rs - neural_network::Network::save (line 153) stdout ----
[INFO] [stdout] Test executable failed (exit status: 101).
[INFO] [stdout] 
[INFO] [stdout] stderr:
[INFO] [stdout] 
[INFO] [stdout] thread 'main' (391) panicked at src/neural_network.rs:162:36:
[INFO] [stdout] Unable to write file: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x59011edb7122 - std::backtrace_rs::backtrace::libunwind::trace::hcab59e1e990fdc24
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x59011edb7122 - std::backtrace_rs::backtrace::trace_unsynchronized::he24cc57f3d2f47b7
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x59011edb7122 - std::sys::backtrace::_print_fmt::hf8d65ede198eeb54
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x59011edb7122 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h67edf0e4d33c343c
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x59011edc6a5f - core::fmt::rt::Argument::fmt::hef94184842aeafdd
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x59011edc6a5f - core::fmt::write::hcf0c66b48a8fa606
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/fmt/mod.rs:1468:25
[INFO] [stdout]    6:     0x59011ed90081 - std::io::default_write_fmt::h1ecb8c7cfa7da481
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x59011ed90081 - std::io::Write::write_fmt::h051fe4a9e4fdbf48
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x59011ed96e22 - std::sys::backtrace::BacktraceLock::print::h07e5435aa717b414
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x59011ed9ae0f - std::panicking::default_hook::{{closure}}::h91001850288db5f7
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x59011ed9ac69 - std::panicking::default_hook::h2346dbb704ef5512
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:328:9
[INFO] [stdout]   11:     0x59011ed9b545 - std::panicking::panic_with_hook::hd2b063a6090d23a4
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:834:13
[INFO] [stdout]   12:     0x59011ed9b32a - std::panicking::panic_handler::{{closure}}::he666d95f139a333e
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:707:13
[INFO] [stdout]   13:     0x59011ed96f59 - std::sys::backtrace::__rust_end_short_backtrace::h631ad224854ebee5
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   14:     0x59011ed8489d - __rustc[1d67440d6e82e4f]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:698:5
[INFO] [stdout]   15:     0x59011edca350 - core::panicking::panic_fmt::h420ddb7fd73daf53
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/panicking.rs:75:14
[INFO] [stdout]   16:     0x59011edc99e6 - core::result::unwrap_failed::hdde076be853d034f
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/result.rs:1855:5
[INFO] [stdout]   17:     0x59011ed57f3c - core::result::Result<T,E>::expect::h64ddf594df1f192c
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/result.rs:1178:23
[INFO] [stdout]   18:     0x59011ed51892 - fast_neural_network::neural_network::Network::save::h88c27500dfaf5af6
[INFO] [stdout]                                at /opt/rustwide/workdir/src/neural_network.rs:162:36
[INFO] [stdout]   19:     0x59011ed47eb9 - rust_out::main::_doctest_main_src_neural_network_rs_153_0::hd03a7b2a9db5ccb1
[INFO] [stdout]   20:     0x59011ed47e66 - rust_out::main::h909c389308a13d94
[INFO] [stdout]   21:     0x59011ed47e43 - core::ops::function::FnOnce::call_once::he80aaf16098e337a
[INFO] [stdout]   22:     0x59011ed47de6 - std::sys::backtrace::__rust_begin_short_backtrace::hd4f5856814720a68
[INFO] [stdout]   23:     0x59011ed47dc9 - std::rt::lang_start::{{closure}}::hdd522a24cafb4b4b
[INFO] [stdout]   24:     0x59011ed917a0 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h4967fb77e0dfb65c
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/ops/function.rs:287:21
[INFO] [stdout]   25:     0x59011ed917a0 - std::panicking::catch_unwind::do_call::hf7e87675c3e14c23
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:590:40
[INFO] [stdout]   26:     0x59011ed917a0 - std::panicking::catch_unwind::h26f0e342004b5114
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:553:19
[INFO] [stdout]   27:     0x59011ed917a0 - std::panic::catch_unwind::h9ee33ca17775d897
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panic.rs:359:14
[INFO] [stdout]   28:     0x59011ed917a0 - std::rt::lang_start_internal::{{closure}}::h243ba3495fa13cf8
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/rt.rs:175:24
[INFO] [stdout]   29:     0x59011ed917a0 - std::panicking::catch_unwind::do_call::h819db0a7788e7259
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:590:40
[INFO] [stdout]   30:     0x59011ed917a0 - std::panicking::catch_unwind::h23e08fb4a7b9f405
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:553:19
[INFO] [stdout]   31:     0x59011ed917a0 - std::panic::catch_unwind::h7ca3d9eabb6135ff
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panic.rs:359:14
[INFO] [stdout]   32:     0x59011ed917a0 - std::rt::lang_start_internal::h06ad7395f4fda8d7
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/rt.rs:171:5
[INFO] [stdout]   33:     0x59011ed47db1 - std::rt::lang_start::h5d51bffdfd88737a
[INFO] [stdout]   34:     0x59011ed47f25 - main
[INFO] [stdout]   35:     0x73d3dc0831ca - <unknown>
[INFO] [stdout]   36:     0x73d3dc08328b - __libc_start_main
[INFO] [stdout]   37:     0x59011ed47cc5 - _start
[INFO] [stdout]   38:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 7) stdout ----
[INFO] [stdout] Test executable failed (exit status: 101).
[INFO] [stdout] 
[INFO] [stdout] stdout:
[INFO] [stdout] for [0.000, 0.000], [0.000] -> [[[0.000]]]
[INFO] [stdout] for [1.000, 0.000], [1.000] -> [[[1.000]]]
[INFO] [stdout] for [0.000, 1.000], [1.000] -> [[[1.000]]]
[INFO] [stdout] for [1.000, 1.000], [0.000] -> [[[0.000]]]
[INFO] [stdout] 
[INFO] [stdout] stderr:
[INFO] [stdout] 
[INFO] [stdout] thread 'main' (425) panicked at src/neural_network.rs:162:36:
[INFO] [stdout] Unable to write file: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x588276fc27a2 - std::backtrace_rs::backtrace::libunwind::trace::hcab59e1e990fdc24
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x588276fc27a2 - std::backtrace_rs::backtrace::trace_unsynchronized::he24cc57f3d2f47b7
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x588276fc27a2 - std::sys::backtrace::_print_fmt::hf8d65ede198eeb54
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x588276fc27a2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h67edf0e4d33c343c
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x588276fd360f - core::fmt::rt::Argument::fmt::hef94184842aeafdd
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x588276fd360f - core::fmt::write::hcf0c66b48a8fa606
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/fmt/mod.rs:1468:25
[INFO] [stdout]    6:     0x588276f99991 - std::io::default_write_fmt::h1ecb8c7cfa7da481
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x588276f99991 - std::io::Write::write_fmt::h051fe4a9e4fdbf48
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x588276fa1342 - std::sys::backtrace::BacktraceLock::print::h07e5435aa717b414
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x588276fa563f - std::panicking::default_hook::{{closure}}::h91001850288db5f7
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x588276fa5499 - std::panicking::default_hook::h2346dbb704ef5512
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:328:9
[INFO] [stdout]   11:     0x588276fa5d75 - std::panicking::panic_with_hook::hd2b063a6090d23a4
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:834:13
[INFO] [stdout]   12:     0x588276fa5b5a - std::panicking::panic_handler::{{closure}}::he666d95f139a333e
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:707:13
[INFO] [stdout]   13:     0x588276fa1479 - std::sys::backtrace::__rust_end_short_backtrace::h631ad224854ebee5
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   14:     0x588276f8e1ad - __rustc[1d67440d6e82e4f]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:698:5
[INFO] [stdout]   15:     0x588276fdb0a0 - core::panicking::panic_fmt::h420ddb7fd73daf53
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/panicking.rs:75:14
[INFO] [stdout]   16:     0x588276fda6b6 - core::result::unwrap_failed::hdde076be853d034f
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/result.rs:1855:5
[INFO] [stdout]   17:     0x588276f1fe0c - core::result::Result<T,E>::expect::h64ddf594df1f192c
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/result.rs:1178:23
[INFO] [stdout]   18:     0x588276f10cd2 - fast_neural_network::neural_network::Network::save::h88c27500dfaf5af6
[INFO] [stdout]                                at /opt/rustwide/workdir/src/neural_network.rs:162:36
[INFO] [stdout]   19:     0x588276ec3278 - rust_out::main::h909c389308a13d94
[INFO] [stdout]   20:     0x588276ec1913 - core::ops::function::FnOnce::call_once::he80aaf16098e337a
[INFO] [stdout]   21:     0x588276ec17d6 - std::sys::backtrace::__rust_begin_short_backtrace::hd4f5856814720a68
[INFO] [stdout]   22:     0x588276ec17b9 - std::rt::lang_start::{{closure}}::hdd522a24cafb4b4b
[INFO] [stdout]   23:     0x588276f9b310 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h4967fb77e0dfb65c
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/ops/function.rs:287:21
[INFO] [stdout]   24:     0x588276f9b310 - std::panicking::catch_unwind::do_call::hf7e87675c3e14c23
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:590:40
[INFO] [stdout]   25:     0x588276f9b310 - std::panicking::catch_unwind::h26f0e342004b5114
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:553:19
[INFO] [stdout]   26:     0x588276f9b310 - std::panic::catch_unwind::h9ee33ca17775d897
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panic.rs:359:14
[INFO] [stdout]   27:     0x588276f9b310 - std::rt::lang_start_internal::{{closure}}::h243ba3495fa13cf8
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/rt.rs:175:24
[INFO] [stdout]   28:     0x588276f9b310 - std::panicking::catch_unwind::do_call::h819db0a7788e7259
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:590:40
[INFO] [stdout]   29:     0x588276f9b310 - std::panicking::catch_unwind::h23e08fb4a7b9f405
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:553:19
[INFO] [stdout]   30:     0x588276f9b310 - std::panic::catch_unwind::h7ca3d9eabb6135ff
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x588276f9b310 - std::rt::lang_start_internal::h06ad7395f4fda8d7
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/rt.rs:171:5
[INFO] [stdout]   32:     0x588276ec17a1 - std::rt::lang_start::h5d51bffdfd88737a
[INFO] [stdout]   33:     0x588276ec3575 - main
[INFO] [stdout]   34:     0x791f617b71ca - <unknown>
[INFO] [stdout]   35:     0x791f617b728b - __libc_start_main
[INFO] [stdout]   36:     0x588276ec1615 - _start
[INFO] [stdout]   37:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 7)
[INFO] [stdout]     src/neural_network.rs - neural_network::Network::forward (line 339)
[INFO] [stdout]     src/neural_network.rs - neural_network::Network::save (line 153)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 8 passed; 3 failed; 0 ignored; 0 measured; 0 filtered out; finished in 7.32s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "090ccf62c03b76f84a43162dd94c4910afc5b68553271db612e98d2757280fc3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "090ccf62c03b76f84a43162dd94c4910afc5b68553271db612e98d2757280fc3", kill_on_drop: false }`
[INFO] [stdout] 090ccf62c03b76f84a43162dd94c4910afc5b68553271db612e98d2757280fc3
