[INFO] cloning repository https://github.com/satp42/satgrad-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/satp42/satgrad-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsatp42%2Fsatgrad-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsatp42%2Fsatgrad-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] aeb6fc483313f6e0a3d0fee8a3ef31f8a4b5ab09
[INFO] building satp42/satgrad-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%2Fsatp42%2Fsatgrad-rust" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/satp42/satgrad-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/satp42/satgrad-rust
[INFO] finished tweaking git repo https://github.com/satp42/satgrad-rust
[INFO] tweaked toml for git repo https://github.com/satp42/satgrad-rust written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/satp42/satgrad-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-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] f822a314d1493826df251fa724d86f3e3dd328f173185a0d80eb98bd7c07261d
[INFO] running `Command { std: "docker" "start" "-a" "f822a314d1493826df251fa724d86f3e3dd328f173185a0d80eb98bd7c07261d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f822a314d1493826df251fa724d86f3e3dd328f173185a0d80eb98bd7c07261d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f822a314d1493826df251fa724d86f3e3dd328f173185a0d80eb98bd7c07261d", kill_on_drop: false }`
[INFO] [stdout] f822a314d1493826df251fa724d86f3e3dd328f173185a0d80eb98bd7c07261d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 2943e4fa75c2dc0d5407a1adab658cf35b6ff9538860afd0fdf0d8b71a366e84
[INFO] running `Command { std: "docker" "start" "-a" "2943e4fa75c2dc0d5407a1adab658cf35b6ff9538860afd0fdf0d8b71a366e84", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling getrandom v0.2.10
[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 meownet v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/lib.rs:75:14
[INFO] [stdout]    |
[INFO] [stdout] 75 |         for (i, layer) in self.layers.iter_mut().enumerate().rev() {
[INFO] [stdout]    |              ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `weight` and `bias` are never read
[INFO] [stdout]   --> src/lib.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Gradient {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 22 |     weight: Vec<f64>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 23 |     bias: f64,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Gradient` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mse` is never used
[INFO] [stdout]  --> src/train.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn mse(errors: &[f64]) -> f64 {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.72s
[INFO] running `Command { std: "docker" "inspect" "2943e4fa75c2dc0d5407a1adab658cf35b6ff9538860afd0fdf0d8b71a366e84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2943e4fa75c2dc0d5407a1adab658cf35b6ff9538860afd0fdf0d8b71a366e84", kill_on_drop: false }`
[INFO] [stdout] 2943e4fa75c2dc0d5407a1adab658cf35b6ff9538860afd0fdf0d8b71a366e84
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] f4308ba57c576ab86694c3437681159a41201025428f962e0e85b5ac83538b91
[INFO] running `Command { std: "docker" "start" "-a" "f4308ba57c576ab86694c3437681159a41201025428f962e0e85b5ac83538b91", kill_on_drop: false }`
[INFO] [stderr]    Compiling meownet v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/lib.rs:75:14
[INFO] [stdout]    |
[INFO] [stdout] 75 |         for (i, layer) in self.layers.iter_mut().enumerate().rev() {
[INFO] [stdout]    |              ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `weight` and `bias` are never read
[INFO] [stdout]   --> src/lib.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Gradient {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 22 |     weight: Vec<f64>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 23 |     bias: f64,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Gradient` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mse` is never used
[INFO] [stdout]  --> src/train.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn mse(errors: &[f64]) -> f64 {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/lib.rs:75:14
[INFO] [stdout]    |
[INFO] [stdout] 75 |         for (i, layer) in self.layers.iter_mut().enumerate().rev() {
[INFO] [stdout]    |              ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `weight` and `bias` are never read
[INFO] [stdout]   --> src/lib.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Gradient {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 22 |     weight: Vec<f64>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 23 |     bias: f64,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Gradient` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mse` is never used
[INFO] [stdout]  --> src/train.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn mse(errors: &[f64]) -> f64 {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `Command { std: "docker" "inspect" "f4308ba57c576ab86694c3437681159a41201025428f962e0e85b5ac83538b91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4308ba57c576ab86694c3437681159a41201025428f962e0e85b5ac83538b91", kill_on_drop: false }`
[INFO] [stdout] f4308ba57c576ab86694c3437681159a41201025428f962e0e85b5ac83538b91