[INFO] cloning repository https://github.com/Arch-4ng3l/machine_learning
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Arch-4ng3l/machine_learning" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArch-4ng3l%2Fmachine_learning", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArch-4ng3l%2Fmachine_learning'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6a895c6b041d5285b90df8f3c304fc7998fff16f
[INFO] testing Arch-4ng3l/machine_learning against master#733b47ea4b1b86216f14ef56e49440c33933f230+rustflags=-Copt-level=3 for pr-138759
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArch-4ng3l%2Fmachine_learning" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Arch-4ng3l/machine_learning
[INFO] finished tweaking git repo https://github.com/Arch-4ng3l/machine_learning
[INFO] tweaked toml for git repo https://github.com/Arch-4ng3l/machine_learning written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Arch-4ng3l/machine_learning on toolchain 733b47ea4b1b86216f14ef56e49440c33933f230
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Arch-4ng3l/machine_learning 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" "+733b47ea4b1b86216f14ef56e49440c33933f230" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 64846f49f8c0e680bb16bd677604162cd9fb08f9e300f6be66b1406f4b9a412a
[INFO] running `Command { std: "docker" "start" "-a" "64846f49f8c0e680bb16bd677604162cd9fb08f9e300f6be66b1406f4b9a412a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "64846f49f8c0e680bb16bd677604162cd9fb08f9e300f6be66b1406f4b9a412a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64846f49f8c0e680bb16bd677604162cd9fb08f9e300f6be66b1406f4b9a412a", kill_on_drop: false }`
[INFO] [stdout] 64846f49f8c0e680bb16bd677604162cd9fb08f9e300f6be66b1406f4b9a412a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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 -Copt-level=3" "-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" "+733b47ea4b1b86216f14ef56e49440c33933f230" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6ef2f922958c130067c8743064f14c62b9ad31a0607afc1890dc7c8b9a51f529
[INFO] running `Command { std: "docker" "start" "-a" "6ef2f922958c130067c8743064f14c62b9ad31a0607afc1890dc7c8b9a51f529", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling getrandom v0.2.15
[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 machine_learning v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/main.rs:302:9
[INFO] [stdout]     |
[INFO] [stdout] 302 |     for i in 0..35 {
[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: unused variable: `lr`
[INFO] [stdout]    --> src/main.rs:306:13
[INFO] [stdout]     |
[INFO] [stdout] 306 |         let lr = 0.1;
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_lr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `error_back2`
[INFO] [stdout]    --> src/main.rs:318:14
[INFO] [stdout]     |
[INFO] [stdout] 318 |         let (error_back2, weight_update2, bias_update2) = layer.backward(&matrix, &error_back, &layer2.layer_w, false);
[INFO] [stdout]     |              ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_error_back2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Linear` is never constructed
[INFO] [stdout]    --> src/main.rs:208:8
[INFO] [stdout]     |
[INFO] [stdout] 208 | struct Linear {}
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/main.rs:269:27
[INFO] [stdout]     |
[INFO] [stdout] 269 |     fn forward(&mut self, X: &Matrix) -> Matrix {
[INFO] [stdout]     |                           ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.56s
[INFO] running `Command { std: "docker" "inspect" "6ef2f922958c130067c8743064f14c62b9ad31a0607afc1890dc7c8b9a51f529", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ef2f922958c130067c8743064f14c62b9ad31a0607afc1890dc7c8b9a51f529", kill_on_drop: false }`
[INFO] [stdout] 6ef2f922958c130067c8743064f14c62b9ad31a0607afc1890dc7c8b9a51f529
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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 -Copt-level=3" "-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" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7b7c66a7be00f298dbdbf4cb82c8e3f6809fdc1056832be853fb29b1f471fd4d
[INFO] running `Command { std: "docker" "start" "-a" "7b7c66a7be00f298dbdbf4cb82c8e3f6809fdc1056832be853fb29b1f471fd4d", kill_on_drop: false }`
[INFO] [stderr]    Compiling machine_learning v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/main.rs:302:9
[INFO] [stdout]     |
[INFO] [stdout] 302 |     for i in 0..35 {
[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: unused variable: `lr`
[INFO] [stdout]    --> src/main.rs:306:13
[INFO] [stdout]     |
[INFO] [stdout] 306 |         let lr = 0.1;
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_lr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `error_back2`
[INFO] [stdout]    --> src/main.rs:318:14
[INFO] [stdout]     |
[INFO] [stdout] 318 |         let (error_back2, weight_update2, bias_update2) = layer.backward(&matrix, &error_back, &layer2.layer_w, false);
[INFO] [stdout]     |              ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_error_back2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Linear` is never constructed
[INFO] [stdout]    --> src/main.rs:208:8
[INFO] [stdout]     |
[INFO] [stdout] 208 | struct Linear {}
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/main.rs:269:27
[INFO] [stdout]     |
[INFO] [stdout] 269 |     fn forward(&mut self, X: &Matrix) -> Matrix {
[INFO] [stdout]     |                           ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `Command { std: "docker" "inspect" "7b7c66a7be00f298dbdbf4cb82c8e3f6809fdc1056832be853fb29b1f471fd4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b7c66a7be00f298dbdbf4cb82c8e3f6809fdc1056832be853fb29b1f471fd4d", kill_on_drop: false }`
[INFO] [stdout] 7b7c66a7be00f298dbdbf4cb82c8e3f6809fdc1056832be853fb29b1f471fd4d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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 -Copt-level=3" "-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" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 669488ccbdb54906a5fedfdc126c9f91d592c2be5fafa8129c87b6a4fb293663
[INFO] running `Command { std: "docker" "start" "-a" "669488ccbdb54906a5fedfdc126c9f91d592c2be5fafa8129c87b6a4fb293663", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/main.rs:302:9
[INFO] [stderr]     |
[INFO] [stderr] 302 |     for i in 0..35 {
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lr`
[INFO] [stderr]    --> src/main.rs:306:13
[INFO] [stderr]     |
[INFO] [stderr] 306 |         let lr = 0.1;
[INFO] [stderr]     |             ^^ help: if this is intentional, prefix it with an underscore: `_lr`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `error_back2`
[INFO] [stderr]    --> src/main.rs:318:14
[INFO] [stderr]     |
[INFO] [stderr] 318 |         let (error_back2, weight_update2, bias_update2) = layer.backward(&matrix, &error_back, &layer2.layer_w, false);
[INFO] [stderr]     |              ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_error_back2`
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Linear` is never constructed
[INFO] [stderr]    --> src/main.rs:208:8
[INFO] [stderr]     |
[INFO] [stderr] 208 | struct Linear {}
[INFO] [stderr]     |        ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X` should have a snake case name
[INFO] [stderr]    --> src/main.rs:269:27
[INFO] [stderr]     |
[INFO] [stderr] 269 |     fn forward(&mut self, X: &Matrix) -> Matrix {
[INFO] [stderr]     |                           ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `machine_learning` (bin "machine_learning" test) generated 5 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/machine_learning-2e1f3fd306b6aa77)
[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" "669488ccbdb54906a5fedfdc126c9f91d592c2be5fafa8129c87b6a4fb293663", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "669488ccbdb54906a5fedfdc126c9f91d592c2be5fafa8129c87b6a4fb293663", kill_on_drop: false }`
[INFO] [stdout] 669488ccbdb54906a5fedfdc126c9f91d592c2be5fafa8129c87b6a4fb293663
