[INFO] fetching crate rusty_neat 0.2.4...
[INFO] testing rusty_neat-0.2.4 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate rusty_neat 0.2.4 into /workspace/builds/worker-0-tc2/source
[INFO] removed /workspace/builds/worker-0-tc2/source/.cargo/config.toml
[INFO] started tweaking crates.io crate rusty_neat 0.2.4
[INFO] finished tweaking crates.io crate rusty_neat 0.2.4
[INFO] tweaked toml for crates.io crate rusty_neat 0.2.4 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rusty_neat 0.2.4 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 rusty_neat 0.2.4 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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 2e234e733b07fdca53a4859b561b90cccbafbef191368c71444705c3c708e3b1
[INFO] running `Command { std: "docker" "start" "-a" "2e234e733b07fdca53a4859b561b90cccbafbef191368c71444705c3c708e3b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e234e733b07fdca53a4859b561b90cccbafbef191368c71444705c3c708e3b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e234e733b07fdca53a4859b561b90cccbafbef191368c71444705c3c708e3b1", kill_on_drop: false }`
[INFO] [stdout] 2e234e733b07fdca53a4859b561b90cccbafbef191368c71444705c3c708e3b1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] cbbc5919a8f7baf03b8690d8df97815bc06854431715b427061c1ebfae81b669
[INFO] running `Command { std: "docker" "start" "-a" "cbbc5919a8f7baf03b8690d8df97815bc06854431715b427061c1ebfae81b669", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-ident v1.0.23
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling libc v0.2.182
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling rand_core v0.10.0
[INFO] [stderr]    Compiling getrandom v0.4.1
[INFO] [stderr]    Compiling libm v0.2.16
[INFO] [stderr]    Compiling cpufeatures v0.3.0
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling winnow v0.7.14
[INFO] [stderr]    Compiling rayon v1.11.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling chacha20 v0.10.0
[INFO] [stderr]    Compiling quote v1.0.44
[INFO] [stderr]    Compiling syn v2.0.115
[INFO] [stderr]    Compiling rand v0.10.0
[INFO] [stderr]    Compiling toml_parser v1.0.8+spec-1.1.0
[INFO] [stderr]    Compiling rand_distr v0.6.0
[INFO] [stderr]    Compiling toml_datetime v1.0.0+spec-1.1.0
[INFO] [stderr]    Compiling serde_spanned v1.0.4
[INFO] [stderr]    Compiling toml v1.0.1+spec-1.1.0
[INFO] [stderr]    Compiling darling_core v0.21.3
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling darling_macro v0.21.3
[INFO] [stderr]    Compiling darling v0.21.3
[INFO] [stderr]    Compiling serde_with_macros v3.16.1
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling serde_with v3.16.1
[INFO] [stderr]    Compiling rusty_neat v0.2.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 25.81s
[INFO] running `Command { std: "docker" "inspect" "cbbc5919a8f7baf03b8690d8df97815bc06854431715b427061c1ebfae81b669", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cbbc5919a8f7baf03b8690d8df97815bc06854431715b427061c1ebfae81b669", kill_on_drop: false }`
[INFO] [stdout] cbbc5919a8f7baf03b8690d8df97815bc06854431715b427061c1ebfae81b669
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 24c9a025214f2971b2d1f1378ac6099b9f55cc4663c3c0aa49e9d8ba6f0192fc
[INFO] running `Command { std: "docker" "start" "-a" "24c9a025214f2971b2d1f1378ac6099b9f55cc4663c3c0aa49e9d8ba6f0192fc", kill_on_drop: false }`
[INFO] [stderr]    Compiling rusty_neat v0.2.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.32s
[INFO] running `Command { std: "docker" "inspect" "24c9a025214f2971b2d1f1378ac6099b9f55cc4663c3c0aa49e9d8ba6f0192fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24c9a025214f2971b2d1f1378ac6099b9f55cc4663c3c0aa49e9d8ba6f0192fc", kill_on_drop: false }`
[INFO] [stdout] 24c9a025214f2971b2d1f1378ac6099b9f55cc4663c3c0aa49e9d8ba6f0192fc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 30479ce44cda9a9cc44c08eaae78004095907f68a27cfd0056b6a3c71ed4818e
[INFO] running `Command { std: "docker" "start" "-a" "30479ce44cda9a9cc44c08eaae78004095907f68a27cfd0056b6a3c71ed4818e", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.13s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rusty_neat-a837ce5d03b20117)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rusty_neat
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/../README.md - (line 49) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/../README.md - (line 49) stdout ----
[INFO] [stdout] error[E0432]: unresolved import `rusty_neat::visu`
[INFO] [stdout]   --> src/../README.md:55:35
[INFO] [stdout]    |
[INFO] [stdout] 55 |     use rusty_neat::{NN, ActFunc, visu};
[INFO] [stdout]    |                                   ^^^^ no `visu` in the root
[INFO] [stdout]    |
[INFO] [stdout] note: found an item that was configured out
[INFO] [stdout]   --> src/lib.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout]  7 | #[cfg(feature = "visu")]
[INFO] [stdout]    |       ---------------- the item is gated behind the `visu` feature
[INFO] [stdout]  8 | mod visu;
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] note: found an item that was configured out
[INFO] [stdout]   --> src/lib.rs:15:15
[INFO] [stdout]    |
[INFO] [stdout] 14 | #[cfg(feature = "visu")]
[INFO] [stdout]    |       ---------------- the item is gated behind the `visu` feature
[INFO] [stdout] 15 | pub use visu::visu;
[INFO] [stdout]    |               ^^^^
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find module or crate `fs` in this scope
[INFO] [stdout]   --> src/../README.md:65:9
[INFO] [stdout]    |
[INFO] [stdout] 65 |         fs::create_dir("out");
[INFO] [stdout]    |         ^^ use of unresolved module or unlinked crate `fs`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `fs`, use `cargo add fs` to add it to your `Cargo.toml`
[INFO] [stdout] help: consider importing this module
[INFO] [stdout]    |
[INFO] [stdout] 53 +     use std::fs;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find module or crate `fs` in this scope
[INFO] [stdout]   --> src/../README.md:84:28
[INFO] [stdout]    |
[INFO] [stdout] 84 |             let mut file = fs::File::create(
[INFO] [stdout]    |                            ^^ use of unresolved module or unlinked crate `fs`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `fs`, use `cargo add fs` to add it to your `Cargo.toml`
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 53 +     use std::fs::File;
[INFO] [stdout]    |
[INFO] [stdout] help: if you import `File`, refer to it directly
[INFO] [stdout]    |
[INFO] [stdout] 84 -             let mut file = fs::File::create(
[INFO] [stdout] 84 +             let mut file = File::create(
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find module or crate `fs` in this scope
[INFO] [stdout]    --> src/../README.md:101:28
[INFO] [stdout]     |
[INFO] [stdout] 101 |             let mut file = fs::File::create(
[INFO] [stdout]     |                            ^^ use of unresolved module or unlinked crate `fs`
[INFO] [stdout]     |
[INFO] [stdout]     = help: if you wanted to use a crate named `fs`, use `cargo add fs` to add it to your `Cargo.toml`
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout]  53 +     use std::fs::File;
[INFO] [stdout]     |
[INFO] [stdout] help: if you import `File`, refer to it directly
[INFO] [stdout]     |
[INFO] [stdout] 101 -             let mut file = fs::File::create(
[INFO] [stdout] 101 +             let mut file = File::create(
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0433.
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/../README.md - (line 49)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.18s
[INFO] [stdout] 
[INFO] [stdout] all doctests ran in 0.37s; merged doctests compilation took 0.18s
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "30479ce44cda9a9cc44c08eaae78004095907f68a27cfd0056b6a3c71ed4818e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30479ce44cda9a9cc44c08eaae78004095907f68a27cfd0056b6a3c71ed4818e", kill_on_drop: false }`
[INFO] [stdout] 30479ce44cda9a9cc44c08eaae78004095907f68a27cfd0056b6a3c71ed4818e
