[INFO] fetching crate micrograd_rs_nt 0.1.0...
[INFO] testing micrograd_rs_nt-0.1.0 against try#b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b for pr-145330-1
[INFO] extracting crate micrograd_rs_nt 0.1.0 into /workspace/builds/worker-4-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-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate micrograd_rs_nt 0.1.0 on toolchain b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 111738bc386bda5c85a59c73c67103aa0d80a31bddb46e7453cc42d281fd2e5e
[INFO] running `Command { std: "docker" "start" "-a" "111738bc386bda5c85a59c73c67103aa0d80a31bddb46e7453cc42d281fd2e5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "111738bc386bda5c85a59c73c67103aa0d80a31bddb46e7453cc42d281fd2e5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "111738bc386bda5c85a59c73c67103aa0d80a31bddb46e7453cc42d281fd2e5e", kill_on_drop: false }`
[INFO] [stdout] 111738bc386bda5c85a59c73c67103aa0d80a31bddb46e7453cc42d281fd2e5e
[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" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 804ef73c888601611c2d31723aac9f1f3cd5c1056cd5ce4d5dcdbbe3e4d0346c
[INFO] running `Command { std: "docker" "start" "-a" "804ef73c888601611c2d31723aac9f1f3cd5c1056cd5ce4d5dcdbbe3e4d0346c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling libc v0.2.158
[INFO] [stderr]    Compiling byteorder v1.5.0
[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)]` 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 8.79s
[INFO] running `Command { std: "docker" "inspect" "804ef73c888601611c2d31723aac9f1f3cd5c1056cd5ce4d5dcdbbe3e4d0346c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "804ef73c888601611c2d31723aac9f1f3cd5c1056cd5ce4d5dcdbbe3e4d0346c", kill_on_drop: false }`
[INFO] [stdout] 804ef73c888601611c2d31723aac9f1f3cd5c1056cd5ce4d5dcdbbe3e4d0346c
[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" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fbe9998e2fc1bcc6657c4140a0cf29c855ba0f00299c0d1d3f7933e5842ebe14
[INFO] running `Command { std: "docker" "start" "-a" "fbe9998e2fc1bcc6657c4140a0cf29c855ba0f00299c0d1d3f7933e5842ebe14", 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)]` 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 0.53s
[INFO] running `Command { std: "docker" "inspect" "fbe9998e2fc1bcc6657c4140a0cf29c855ba0f00299c0d1d3f7933e5842ebe14", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fbe9998e2fc1bcc6657c4140a0cf29c855ba0f00299c0d1d3f7933e5842ebe14", kill_on_drop: false }`
[INFO] [stdout] fbe9998e2fc1bcc6657c4140a0cf29c855ba0f00299c0d1d3f7933e5842ebe14
[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" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ac432b784ddcf4e27f43286409c2757e8d6170e0dfd0c4c764ce66cdbd362b65
[INFO] running `Command { std: "docker" "start" "-a" "ac432b784ddcf4e27f43286409c2757e8d6170e0dfd0c4c764ce66cdbd362b65", 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)]` 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-fbe513f26f505975)
[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" "ac432b784ddcf4e27f43286409c2757e8d6170e0dfd0c4c764ce66cdbd362b65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac432b784ddcf4e27f43286409c2757e8d6170e0dfd0c4c764ce66cdbd362b65", kill_on_drop: false }`
[INFO] [stdout] ac432b784ddcf4e27f43286409c2757e8d6170e0dfd0c4c764ce66cdbd362b65