[INFO] cloning repository https://github.com/Foxicution/nn-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Foxicution/nn-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFoxicution%2Fnn-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFoxicution%2Fnn-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b704db1430408e3566696f5cb0661995d1ebee92
[INFO] building Foxicution/nn-rust against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFoxicution%2Fnn-rust" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Foxicution/nn-rust on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Foxicution/nn-rust
[INFO] finished tweaking git repo https://github.com/Foxicution/nn-rust
[INFO] tweaked toml for git repo https://github.com/Foxicution/nn-rust written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Foxicution/nn-rust 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 92b50935a58454c5f8d0d4abb5ada5a53a3b71150bb8de5fdff99817aa36bfed
[INFO] running `Command { std: "docker" "start" "-a" "92b50935a58454c5f8d0d4abb5ada5a53a3b71150bb8de5fdff99817aa36bfed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "92b50935a58454c5f8d0d4abb5ada5a53a3b71150bb8de5fdff99817aa36bfed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92b50935a58454c5f8d0d4abb5ada5a53a3b71150bb8de5fdff99817aa36bfed", kill_on_drop: false }`
[INFO] [stdout] 92b50935a58454c5f8d0d4abb5ada5a53a3b71150bb8de5fdff99817aa36bfed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 765854744b5e69cfbaa3d6f93fd4b1a540491e95036c76e24f91bac7ba8879b4
[INFO] running `Command { std: "docker" "start" "-a" "765854744b5e69cfbaa3d6f93fd4b1a540491e95036c76e24f91bac7ba8879b4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.152
[INFO] [stderr]    Compiling getrandom v0.2.12
[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 mlrs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: methods `matadd` and `matsub` are never used
[INFO] [stdout]   --> src/main.rs:71:8
[INFO] [stdout]    |
[INFO] [stdout] 6  | impl _Tensor {
[INFO] [stdout]    | ------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 71 |     fn matadd(&self, other: &_Tensor) -> _Tensor {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 90 |     fn matsub(&self, other: &_Tensor) -> _Tensor {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sigmoid` is never used
[INFO] [stdout]    --> src/main.rs:185:4
[INFO] [stdout]     |
[INFO] [stdout] 185 | fn sigmoid(x: &f64) -> f64 {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NeuralNetwork` is never constructed
[INFO] [stdout]    --> src/main.rs:189:8
[INFO] [stdout]     |
[INFO] [stdout] 189 | struct NeuralNetwork {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `forward` is never used
[INFO] [stdout]    --> src/main.rs:194:4
[INFO] [stdout]     |
[INFO] [stdout] 194 | fn forward(net: &NeuralNetwork, input: &_Tensor) -> _Tensor {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.54s
[INFO] running `Command { std: "docker" "inspect" "765854744b5e69cfbaa3d6f93fd4b1a540491e95036c76e24f91bac7ba8879b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "765854744b5e69cfbaa3d6f93fd4b1a540491e95036c76e24f91bac7ba8879b4", kill_on_drop: false }`
[INFO] [stdout] 765854744b5e69cfbaa3d6f93fd4b1a540491e95036c76e24f91bac7ba8879b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f263d7e9bc22a0b3451ac497423b1f82412eba01833b0309bfd537520a5ffe35
[INFO] running `Command { std: "docker" "start" "-a" "f263d7e9bc22a0b3451ac497423b1f82412eba01833b0309bfd537520a5ffe35", kill_on_drop: false }`
[INFO] [stderr]    Compiling mlrs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: methods `matadd` and `matsub` are never used
[INFO] [stdout]   --> src/main.rs:71:8
[INFO] [stdout]    |
[INFO] [stdout] 6  | impl _Tensor {
[INFO] [stdout]    | ------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 71 |     fn matadd(&self, other: &_Tensor) -> _Tensor {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 90 |     fn matsub(&self, other: &_Tensor) -> _Tensor {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sigmoid` is never used
[INFO] [stdout]    --> src/main.rs:185:4
[INFO] [stdout]     |
[INFO] [stdout] 185 | fn sigmoid(x: &f64) -> f64 {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NeuralNetwork` is never constructed
[INFO] [stdout]    --> src/main.rs:189:8
[INFO] [stdout]     |
[INFO] [stdout] 189 | struct NeuralNetwork {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `forward` is never used
[INFO] [stdout]    --> src/main.rs:194:4
[INFO] [stdout]     |
[INFO] [stdout] 194 | fn forward(net: &NeuralNetwork, input: &_Tensor) -> _Tensor {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] running `Command { std: "docker" "inspect" "f263d7e9bc22a0b3451ac497423b1f82412eba01833b0309bfd537520a5ffe35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f263d7e9bc22a0b3451ac497423b1f82412eba01833b0309bfd537520a5ffe35", kill_on_drop: false }`
[INFO] [stdout] f263d7e9bc22a0b3451ac497423b1f82412eba01833b0309bfd537520a5ffe35