[INFO] fetching crate micrograd_rs_nt 0.1.0...
[INFO] testing micrograd_rs_nt-0.1.0 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate micrograd_rs_nt 0.1.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate micrograd_rs_nt 0.1.0
[INFO] finished tweaking crates.io crate micrograd_rs_nt 0.1.0
[INFO] tweaked toml for crates.io crate micrograd_rs_nt 0.1.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate micrograd_rs_nt 0.1.0 on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate micrograd_rs_nt 0.1.0 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-2025-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 83594f52e30e4d7684927a426fba3d278c39d1c53479b98e8e44642ccbe827d2
[INFO] running `Command { std: "docker" "start" "-a" "83594f52e30e4d7684927a426fba3d278c39d1c53479b98e8e44642ccbe827d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "83594f52e30e4d7684927a426fba3d278c39d1c53479b98e8e44642ccbe827d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83594f52e30e4d7684927a426fba3d278c39d1c53479b98e8e44642ccbe827d2", kill_on_drop: false }`
[INFO] [stdout] 83594f52e30e4d7684927a426fba3d278c39d1c53479b98e8e44642ccbe827d2
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e0688a4fe65780299176c4f4f3fd55a11f9bfedae9f1a6dd55062e6134bf42a9
[INFO] running `Command { std: "docker" "start" "-a" "e0688a4fe65780299176c4f4f3fd55a11f9bfedae9f1a6dd55062e6134bf42a9", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling libc v0.2.158
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]    Compiling uuid-macro-internal v1.10.0
[INFO] [stderr]    Compiling zerocopy v0.7.35
[INFO] [stderr]    Compiling ppv-lite86 v0.2.20
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling uuid v1.10.0
[INFO] [stderr]    Compiling micrograd_rs_nt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `zero_grad` is never used
[INFO] [stdout]   --> src/nn.rs:54:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Neuron {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 54 |     pub fn zero_grad(&self) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `zero_grad` is never used
[INFO] [stdout]   --> src/nn.rs:90:12
[INFO] [stdout]    |
[INFO] [stdout] 65 | impl Layer {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 90 |     pub fn zero_grad(&self) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.94s
[INFO] running `Command { std: "docker" "inspect" "e0688a4fe65780299176c4f4f3fd55a11f9bfedae9f1a6dd55062e6134bf42a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0688a4fe65780299176c4f4f3fd55a11f9bfedae9f1a6dd55062e6134bf42a9", kill_on_drop: false }`
[INFO] [stdout] e0688a4fe65780299176c4f4f3fd55a11f9bfedae9f1a6dd55062e6134bf42a9
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 98936a1f1fa7beedda919331add4645df80be38b7a3305d6990d8aa905b29d61
[INFO] running `Command { std: "docker" "start" "-a" "98936a1f1fa7beedda919331add4645df80be38b7a3305d6990d8aa905b29d61", kill_on_drop: false }`
[INFO] [stderr]    Compiling micrograd_rs_nt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `zero_grad` is never used
[INFO] [stdout]   --> src/nn.rs:54:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Neuron {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 54 |     pub fn zero_grad(&self) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `zero_grad` is never used
[INFO] [stdout]   --> src/nn.rs:90:12
[INFO] [stdout]    |
[INFO] [stdout] 65 | impl Layer {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 90 |     pub fn zero_grad(&self) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `Command { std: "docker" "inspect" "98936a1f1fa7beedda919331add4645df80be38b7a3305d6990d8aa905b29d61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98936a1f1fa7beedda919331add4645df80be38b7a3305d6990d8aa905b29d61", kill_on_drop: false }`
[INFO] [stdout] 98936a1f1fa7beedda919331add4645df80be38b7a3305d6990d8aa905b29d61
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 825899c41c8778bd19073186e77a6eeea3608bf7878d5dab5e0cbc3489a9cef8
[INFO] running `Command { std: "docker" "start" "-a" "825899c41c8778bd19073186e77a6eeea3608bf7878d5dab5e0cbc3489a9cef8", kill_on_drop: false }`
[INFO] [stderr] warning: method `zero_grad` is never used
[INFO] [stderr]   --> src/nn.rs:54:12
[INFO] [stderr]    |
[INFO] [stderr] 11 | impl Neuron {
[INFO] [stderr]    | ----------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 54 |     pub fn zero_grad(&self) {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `zero_grad` is never used
[INFO] [stderr]   --> src/nn.rs:90:12
[INFO] [stderr]    |
[INFO] [stderr] 65 | impl Layer {
[INFO] [stderr]    | ---------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 90 |     pub fn zero_grad(&self) {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `micrograd_rs_nt` (bin "Main" test) generated 2 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/Main-51acf810a3be870a)
[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] running `Command { std: "docker" "inspect" "825899c41c8778bd19073186e77a6eeea3608bf7878d5dab5e0cbc3489a9cef8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "825899c41c8778bd19073186e77a6eeea3608bf7878d5dab5e0cbc3489a9cef8", kill_on_drop: false }`
[INFO] [stdout] 825899c41c8778bd19073186e77a6eeea3608bf7878d5dab5e0cbc3489a9cef8