[INFO] cloning repository https://github.com/TsaoLun/guide
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/TsaoLun/guide" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTsaoLun%2Fguide", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTsaoLun%2Fguide'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 938c48c40f4de5d5bae7b8647b7f17026348b607
[INFO] building TsaoLun/guide against master#44f415c1d617ebc7b931a243b7b321ef8a6ca47c for pr-142134-abi-ast-error
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTsaoLun%2Fguide" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/TsaoLun/guide on toolchain 44f415c1d617ebc7b931a243b7b321ef8a6ca47c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/TsaoLun/guide
[INFO] finished tweaking git repo https://github.com/TsaoLun/guide
[INFO] tweaked toml for git repo https://github.com/TsaoLun/guide written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/TsaoLun/guide 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" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9a85c2d899159a3ca9ca610a2b9167d91d2e72a48c9e71268b996a0820ba3a9c
[INFO] running `Command { std: "docker" "start" "-a" "9a85c2d899159a3ca9ca610a2b9167d91d2e72a48c9e71268b996a0820ba3a9c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9a85c2d899159a3ca9ca610a2b9167d91d2e72a48c9e71268b996a0820ba3a9c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a85c2d899159a3ca9ca610a2b9167d91d2e72a48c9e71268b996a0820ba3a9c", kill_on_drop: false }`
[INFO] [stdout] 9a85c2d899159a3ca9ca610a2b9167d91d2e72a48c9e71268b996a0820ba3a9c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 95aada6d2c0b38ae73d2fd4dcd7d9648711771c95b1a06f489c12c3c7c4245c2
[INFO] running `Command { std: "docker" "start" "-a" "95aada6d2c0b38ae73d2fd4dcd7d9648711771c95b1a06f489c12c3c7c4245c2", kill_on_drop: false }`
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[INFO] [stderr]    Compiling burn v0.15.0
[INFO] [stderr]    Compiling guide v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `model::ModelConfig` and `training::TrainingConfig`
[INFO] [stdout]  --> src/main.rs:9:13
[INFO] [stdout]   |
[INFO] [stdout] 9 | use crate::{model::ModelConfig, training::TrainingConfig};
[INFO] [stdout]   |             ^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `optim::AdamConfig`
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     optim::AdamConfig,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `MyAutodiffBackend` is never used
[INFO] [stdout]   --> src/main.rs:18:10
[INFO] [stdout]    |
[INFO] [stdout] 18 |     type MyAutodiffBackend = Autodiff<MyBackend>;
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_artifact_dir` is never used
[INFO] [stdout]   --> src/training.rs:52:4
[INFO] [stdout]    |
[INFO] [stdout] 52 | fn create_artifact_dir(artifact_dir: &str) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `train` is never used
[INFO] [stdout]   --> src/training.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 57 | pub fn train<B: AutodiffBackend>(artifact_dir: &str, config: TrainingConfig, device: B::Device) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5m 28s
[INFO] running `Command { std: "docker" "inspect" "95aada6d2c0b38ae73d2fd4dcd7d9648711771c95b1a06f489c12c3c7c4245c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95aada6d2c0b38ae73d2fd4dcd7d9648711771c95b1a06f489c12c3c7c4245c2", kill_on_drop: false }`
[INFO] [stdout] 95aada6d2c0b38ae73d2fd4dcd7d9648711771c95b1a06f489c12c3c7c4245c2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ca07ee8d1934c74c01049f63182097059984bbca2e222eb007588edb515fdf1b
[INFO] running `Command { std: "docker" "start" "-a" "ca07ee8d1934c74c01049f63182097059984bbca2e222eb007588edb515fdf1b", kill_on_drop: false }`
[INFO] [stderr]    Compiling guide v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `burn::backend::Autodiff`
[INFO] [stdout]  --> src/books/autodiff.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use burn::backend::Autodiff;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `model::ModelConfig` and `training::TrainingConfig`
[INFO] [stdout]  --> src/main.rs:9:13
[INFO] [stdout]   |
[INFO] [stdout] 9 | use crate::{model::ModelConfig, training::TrainingConfig};
[INFO] [stdout]   |             ^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `optim::AdamConfig`
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     optim::AdamConfig,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tensor_1`
[INFO] [stdout]  --> src/books/tensor.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let tensor_1 = Tensor::<Wgpu, 1>::from_data([1., 2., 3.], &device);
[INFO] [stdout]   |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tensor_1`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tensor_2`
[INFO] [stdout]  --> src/books/tensor.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let tensor_2 = Tensor::<Backend, 1>::from_data(TensorData::from([1., 2., 3.]), &device);
[INFO] [stdout]   |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tensor_2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tensor_3`
[INFO] [stdout]   --> src/books/tensor.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let tensor_3 = Tensor::<Backend, 1>::from_floats([1., 2., 3.], &device);
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tensor_3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tensor_4`
[INFO] [stdout]   --> src/books/tensor.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let tensor_4 = Tensor::<Backend, 1, Int>::from_data(TensorData::from(&arr[0..3]), &device);
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tensor_4`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tensor_5`
[INFO] [stdout]   --> src/books/tensor.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let tensor_5 = Tensor::<Backend, 1>::from_data(data, &device);
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tensor_5`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tensor_grad`
[INFO] [stdout]  --> src/books/autodiff.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let tensor_grad = tensor.grad(&gradients);
[INFO] [stdout]   |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tensor_grad`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tensor_grad`
[INFO] [stdout]  --> src/books/autodiff.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let tensor_grad = tensor.grad_remove(&mut gradients);
[INFO] [stdout]   |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tensor_grad`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_artifact_dir` is never used
[INFO] [stdout]   --> src/training.rs:52:4
[INFO] [stdout]    |
[INFO] [stdout] 52 | fn create_artifact_dir(artifact_dir: &str) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `train` is never used
[INFO] [stdout]   --> src/training.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 57 | pub fn train<B: AutodiffBackend>(artifact_dir: &str, config: TrainingConfig, device: B::Device) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calculate_gradients` is never used
[INFO] [stdout]  --> src/books/autodiff.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn calculate_gradients<B: AutodiffBackend>(tensor: Tensor<B, 2>) -> B::Gradients {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `example_validation` is never used
[INFO] [stdout]   --> src/books/autodiff.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn example_validation<B: AutodiffBackend>(tensor: Tensor<B, 2>) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `example_inference` is never used
[INFO] [stdout]   --> src/books/autodiff.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn example_inference<B: Backend>(tensor: Tensor<B, 2>) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `forward` is never used
[INFO] [stdout]   --> src/books/module.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl<B: Backend> PositionWiseFeedForward<B> {
[INFO] [stdout]    | ------------------------------------------- method in this implementation
[INFO] [stdout] 15 |     pub fn forward<const D: usize>(&self, input: Tensor<B, D>) -> Tensor<B, D> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 13.19s
[INFO] running `Command { std: "docker" "inspect" "ca07ee8d1934c74c01049f63182097059984bbca2e222eb007588edb515fdf1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca07ee8d1934c74c01049f63182097059984bbca2e222eb007588edb515fdf1b", kill_on_drop: false }`
[INFO] [stdout] ca07ee8d1934c74c01049f63182097059984bbca2e222eb007588edb515fdf1b