[INFO] cloning repository https://github.com/tiberiusferreira/Autograd-Experiments [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tiberiusferreira/Autograd-Experiments" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftiberiusferreira%2FAutograd-Experiments", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftiberiusferreira%2FAutograd-Experiments'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 75d59203620a8b6a900bfc1250bc6c9585c7d501 [INFO] testing tiberiusferreira/Autograd-Experiments against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftiberiusferreira%2FAutograd-Experiments" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/tiberiusferreira/Autograd-Experiments [INFO] finished tweaking git repo https://github.com/tiberiusferreira/Autograd-Experiments [INFO] tweaked toml for git repo https://github.com/tiberiusferreira/Autograd-Experiments written to /workspace/builds/worker-4-tc1/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/tiberiusferreira/Autograd-Experiments on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/tiberiusferreira/Autograd-Experiments 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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: file `/workspace/builds/worker-4-tc1/source/examples/simple_training.rs` found to be present in multiple build targets: [INFO] [stderr] * `bin` target `simple_training` [INFO] [stderr] * `example` target `simple_training` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded matrixmultiply v0.2.3 [INFO] [stderr] Downloaded ndarray-rand v0.11.0 [INFO] [stderr] Downloaded ndarray v0.13.0 [INFO] [stderr] Downloaded libc v0.2.66 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 5e8bedad350618fac8e864b1898b961e05e8d680195b05cbd775ffa11ca8a956 [INFO] running `Command { std: "docker" "start" "-a" "5e8bedad350618fac8e864b1898b961e05e8d680195b05cbd775ffa11ca8a956", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "5e8bedad350618fac8e864b1898b961e05e8d680195b05cbd775ffa11ca8a956", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5e8bedad350618fac8e864b1898b961e05e8d680195b05cbd775ffa11ca8a956", kill_on_drop: false }` [INFO] [stdout] 5e8bedad350618fac8e864b1898b961e05e8d680195b05cbd775ffa11ca8a956 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 4e2ad9a6e9b23d3256a2548ed31ff0ab8354b8d32f93ba3797e0d52e1727725f [INFO] running `Command { std: "docker" "start" "-a" "4e2ad9a6e9b23d3256a2548ed31ff0ab8354b8d32f93ba3797e0d52e1727725f", kill_on_drop: false }` [INFO] [stderr] warning: file `/opt/rustwide/workdir/examples/simple_training.rs` found to be present in multiple build targets: [INFO] [stderr] * `bin` target `simple_training` [INFO] [stderr] * `example` target `simple_training` [INFO] [stderr] Compiling autocfg v1.0.0 [INFO] [stderr] Compiling libc v0.2.66 [INFO] [stderr] Compiling getrandom v0.1.14 [INFO] [stderr] Compiling ppv-lite86 v0.2.6 [INFO] [stderr] Compiling ndarray v0.13.0 [INFO] [stderr] Compiling either v1.5.3 [INFO] [stderr] Compiling rawpointer v0.2.1 [INFO] [stderr] Compiling matrixmultiply v0.2.3 [INFO] [stderr] Compiling num-traits v0.2.11 [INFO] [stderr] Compiling num-complex v0.2.4 [INFO] [stderr] Compiling num-integer v0.1.42 [INFO] [stderr] Compiling itertools v0.8.2 [INFO] [stderr] Compiling c2-chacha v0.2.3 [INFO] [stderr] Compiling rand_core v0.5.1 [INFO] [stderr] Compiling rand_chacha v0.2.1 [INFO] [stderr] Compiling rand_pcg v0.2.1 [INFO] [stderr] Compiling rand v0.7.3 [INFO] [stderr] Compiling rand_distr v0.2.2 [INFO] [stderr] Compiling ndarray-rand v0.11.0 [INFO] [stderr] Compiling backprop v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unnecessary parentheses around assigned value [INFO] [stdout] --> src/ops/logsoftmax.rs:25:26 [INFO] [stdout] | [INFO] [stdout] 25 | *self_grad = (self_grad.add(&out)); [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 25 - *self_grad = (self_grad.add(&out)); [INFO] [stdout] 25 + *self_grad = self_grad.add(&out); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `arr0` [INFO] [stdout] --> src/tensor_backends/ndarray_backend.rs:1:32 [INFO] [stdout] | [INFO] [stdout] 1 | use ndarray::{arr1, ArrayBase, arr0}; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `NdArray` [INFO] [stdout] --> src/layers.rs:2:30 [INFO] [stdout] | [INFO] [stdout] 2 | use crate::tensor_backends::{NdArray, TensorBackend}; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/ops/relu.rs:6:9 [INFO] [stdout] | [INFO] [stdout] 6 | let mut closure_input_data_clone = input.data().clone(); [INFO] [stdout] | ----^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `dim` [INFO] [stdout] --> src/tensor_backends/indexing.rs:38:17 [INFO] [stdout] | [INFO] [stdout] 38 | for dim in 0..self.dims{ [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_dim` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `validate_grad` is never used [INFO] [stdout] --> src/ops/testing.rs:8:8 [INFO] [stdout] | [INFO] [stdout] 8 | pub fn validate_grad(input: TrackedTensor, computation: &dyn for<'b> Fn(&TrackedTensor<'b, T>) -> TrackedTensor<'b, ... [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/tape.rs:129:43 [INFO] [stdout] | [INFO] [stdout] 129 | pub fn tensor_from_op_result_and_data(&self, op_result: T, op_data: OpData) -> TrackedTensor{ [INFO] [stdout] | ^^^^^ the lifetime is elided here ^^^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 129 | pub fn tensor_from_op_result_and_data(&self, op_result: T, op_data: OpData) -> TrackedTensor<'_, T>{ [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.81s [INFO] running `Command { std: "docker" "inspect" "4e2ad9a6e9b23d3256a2548ed31ff0ab8354b8d32f93ba3797e0d52e1727725f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4e2ad9a6e9b23d3256a2548ed31ff0ab8354b8d32f93ba3797e0d52e1727725f", kill_on_drop: false }` [INFO] [stdout] 4e2ad9a6e9b23d3256a2548ed31ff0ab8354b8d32f93ba3797e0d52e1727725f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] f9a43872b2d3b892943772416b15b0c3cfcf02fa7a86445a31e9d135deed5fab [INFO] running `Command { std: "docker" "start" "-a" "f9a43872b2d3b892943772416b15b0c3cfcf02fa7a86445a31e9d135deed5fab", kill_on_drop: false }` [INFO] [stderr] warning: file `/opt/rustwide/workdir/examples/simple_training.rs` found to be present in multiple build targets: [INFO] [stderr] * `bin` target `simple_training` [INFO] [stderr] * `example` target `simple_training` [INFO] [stdout] warning: unnecessary parentheses around assigned value [INFO] [stdout] --> src/ops/logsoftmax.rs:25:26 [INFO] [stdout] | [INFO] [stdout] 25 | *self_grad = (self_grad.add(&out)); [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 25 - *self_grad = (self_grad.add(&out)); [INFO] [stdout] 25 + *self_grad = self_grad.add(&out); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `arr0` [INFO] [stdout] --> src/tensor_backends/ndarray_backend.rs:1:32 [INFO] [stdout] | [INFO] [stdout] 1 | use ndarray::{arr1, ArrayBase, arr0}; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `NdArray` [INFO] [stdout] --> src/layers.rs:2:30 [INFO] [stdout] | [INFO] [stdout] 2 | use crate::tensor_backends::{NdArray, TensorBackend}; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/ops/relu.rs:6:9 [INFO] [stdout] | [INFO] [stdout] 6 | let mut closure_input_data_clone = input.data().clone(); [INFO] [stdout] | ----^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `dim` [INFO] [stdout] --> src/tensor_backends/indexing.rs:38:17 [INFO] [stdout] | [INFO] [stdout] 38 | for dim in 0..self.dims{ [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_dim` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling backprop v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: function `validate_grad` is never used [INFO] [stdout] --> src/ops/testing.rs:8:8 [INFO] [stdout] | [INFO] [stdout] 8 | pub fn validate_grad(input: TrackedTensor, computation: &dyn for<'b> Fn(&TrackedTensor<'b, T>) -> TrackedTensor<'b, ... [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/tape.rs:129:43 [INFO] [stdout] | [INFO] [stdout] 129 | pub fn tensor_from_op_result_and_data(&self, op_result: T, op_data: OpData) -> TrackedTensor{ [INFO] [stdout] | ^^^^^ the lifetime is elided here ^^^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 129 | pub fn tensor_from_op_result_and_data(&self, op_result: T, op_data: OpData) -> TrackedTensor<'_, T>{ [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around assigned value [INFO] [stdout] --> src/ops/logsoftmax.rs:25:26 [INFO] [stdout] | [INFO] [stdout] 25 | *self_grad = (self_grad.add(&out)); [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 25 - *self_grad = (self_grad.add(&out)); [INFO] [stdout] 25 + *self_grad = self_grad.add(&out); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `arr0` [INFO] [stdout] --> src/tensor_backends/ndarray_backend.rs:1:32 [INFO] [stdout] | [INFO] [stdout] 1 | use ndarray::{arr1, ArrayBase, arr0}; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `super::*` [INFO] [stdout] --> src/tensor_backends/ndarray_backend.rs:126:9 [INFO] [stdout] | [INFO] [stdout] 126 | use super::*; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `crate::tape::*` [INFO] [stdout] --> src/tensor_backends/indexing.rs:59:9 [INFO] [stdout] | [INFO] [stdout] 59 | use crate::tape::*; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `crate::tensor_backends::NdArray` [INFO] [stdout] --> src/tensor_backends/indexing.rs:60:9 [INFO] [stdout] | [INFO] [stdout] 60 | use crate::tensor_backends::NdArray; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `NdArray` [INFO] [stdout] --> src/layers.rs:2:30 [INFO] [stdout] | [INFO] [stdout] 2 | use crate::tensor_backends::{NdArray, TensorBackend}; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/ops/relu.rs:6:9 [INFO] [stdout] | [INFO] [stdout] 6 | let mut closure_input_data_clone = input.data().clone(); [INFO] [stdout] | ----^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/ops/logsoftmax.rs:83:13 [INFO] [stdout] | [INFO] [stdout] 83 | let mut data = NdArray::from_slice(&[1., 2., 3., 4.]); [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `dim` [INFO] [stdout] --> src/tensor_backends/indexing.rs:38:17 [INFO] [stdout] | [INFO] [stdout] 38 | for dim in 0..self.dims{ [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_dim` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/tape.rs:129:43 [INFO] [stdout] | [INFO] [stdout] 129 | pub fn tensor_from_op_result_and_data(&self, op_result: T, op_data: OpData) -> TrackedTensor{ [INFO] [stdout] | ^^^^^ the lifetime is elided here ^^^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 129 | pub fn tensor_from_op_result_and_data(&self, op_result: T, op_data: OpData) -> TrackedTensor<'_, T>{ [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 1.59s [INFO] running `Command { std: "docker" "inspect" "f9a43872b2d3b892943772416b15b0c3cfcf02fa7a86445a31e9d135deed5fab", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f9a43872b2d3b892943772416b15b0c3cfcf02fa7a86445a31e9d135deed5fab", kill_on_drop: false }` [INFO] [stdout] f9a43872b2d3b892943772416b15b0c3cfcf02fa7a86445a31e9d135deed5fab [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] ee3a95732453dbd36bbb849eb6ff10874ee8cc3ebc1619d9ee546d027b3dfc40 [INFO] running `Command { std: "docker" "start" "-a" "ee3a95732453dbd36bbb849eb6ff10874ee8cc3ebc1619d9ee546d027b3dfc40", kill_on_drop: false }` [INFO] [stderr] warning: file `/opt/rustwide/workdir/examples/simple_training.rs` found to be present in multiple build targets: [INFO] [stderr] * `bin` target `simple_training` [INFO] [stderr] * `example` target `simple_training` [INFO] [stderr] warning: unnecessary parentheses around assigned value [INFO] [stderr] --> src/ops/logsoftmax.rs:25:26 [INFO] [stderr] | [INFO] [stderr] 25 | *self_grad = (self_grad.add(&out)); [INFO] [stderr] | ^ ^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] 25 - *self_grad = (self_grad.add(&out)); [INFO] [stderr] 25 + *self_grad = self_grad.add(&out); [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: unused import: `arr0` [INFO] [stderr] --> src/tensor_backends/ndarray_backend.rs:1:32 [INFO] [stderr] | [INFO] [stderr] 1 | use ndarray::{arr1, ArrayBase, arr0}; [INFO] [stderr] | ^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `NdArray` [INFO] [stderr] --> src/layers.rs:2:30 [INFO] [stderr] | [INFO] [stderr] 2 | use crate::tensor_backends::{NdArray, TensorBackend}; [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/ops/relu.rs:6:9 [INFO] [stderr] | [INFO] [stderr] 6 | let mut closure_input_data_clone = input.data().clone(); [INFO] [stderr] | ----^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `dim` [INFO] [stderr] --> src/tensor_backends/indexing.rs:38:17 [INFO] [stderr] | [INFO] [stderr] 38 | for dim in 0..self.dims{ [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_dim` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: function `validate_grad` is never used [INFO] [stderr] --> src/ops/testing.rs:8:8 [INFO] [stderr] | [INFO] [stderr] 8 | pub fn validate_grad(input: TrackedTensor, computation: &dyn for<'b> Fn(&TrackedTensor<'b, T>) -> TrackedTensor<'b, ... [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stderr] --> src/tape.rs:129:43 [INFO] [stderr] | [INFO] [stderr] 129 | pub fn tensor_from_op_result_and_data(&self, op_result: T, op_data: OpData) -> TrackedTensor{ [INFO] [stderr] | ^^^^^ the lifetime is elided here ^^^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stderr] | [INFO] [stderr] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stderr] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stderr] help: use `'_` for type paths [INFO] [stderr] | [INFO] [stderr] 129 | pub fn tensor_from_op_result_and_data(&self, op_result: T, op_data: OpData) -> TrackedTensor<'_, T>{ [INFO] [stderr] | +++ [INFO] [stderr] [INFO] [stderr] warning: unused import: `super::*` [INFO] [stderr] --> src/tensor_backends/ndarray_backend.rs:126:9 [INFO] [stderr] | [INFO] [stderr] 126 | use super::*; [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `crate::tape::*` [INFO] [stderr] --> src/tensor_backends/indexing.rs:59:9 [INFO] [stderr] | [INFO] [stderr] 59 | use crate::tape::*; [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `crate::tensor_backends::NdArray` [INFO] [stderr] --> src/tensor_backends/indexing.rs:60:9 [INFO] [stderr] | [INFO] [stderr] 60 | use crate::tensor_backends::NdArray; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/ops/logsoftmax.rs:83:13 [INFO] [stderr] | [INFO] [stderr] 83 | let mut data = NdArray::from_slice(&[1., 2., 3., 4.]); [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: `backprop` (lib) generated 7 warnings (run `cargo fix --lib -p backprop` to apply 5 suggestions) [INFO] [stderr] warning: `backprop` (lib test) generated 10 warnings (6 duplicates) (run `cargo fix --lib -p backprop --tests` to apply 4 suggestions) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s [INFO] [stderr] Running unittests src/backprop.rs (/opt/rustwide/target/debug/deps/backprop-0b725b478f78fd08) [INFO] [stdout] [INFO] [stdout] running 9 tests [INFO] [stdout] test ops::add::add_tests::add_test ... ok [INFO] [stdout] test tensor_backends::ndarray_backend::ndarray_backend_tests::scalar_add ... ok [INFO] [stdout] test ops::sum::tests::sum_test ... ok [INFO] [stdout] test tensor_backends::indexing::indexing_tests::index_test ... ok [INFO] [stdout] test ops::mul::tests::mul_test ... ok [INFO] [stdout] test ops::relu::relu_tests::relu_test ... ok [INFO] [stdout] test ops::matmul::matmul_tests::matmul_test ... ok [INFO] [stdout] test ops::logsoftmax::logsoftmax_tests::logsoftmax_test ... FAILED [INFO] [stdout] test layers::layer_tests::layer_test ... ok [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] [INFO] [stdout] ---- ops::logsoftmax::logsoftmax_tests::logsoftmax_test stdout ---- [INFO] [stdout] SM = NdArray([-3.4401898, -2.4401898, -1.4401898, -0.44018984], shape=[4], strides=[1], layout=C | F (0x3), dynamic ndim=1) [INFO] [stdout] verifying index [0] [INFO] [stdout] grad output: 4.0 [INFO] [stdout] child_grad: NdArray([1.0, 1.0, 1.0, 1.0], shape=[4], strides=[1], layout=C | F (0x3), dynamic ndim=1) [INFO] [stdout] SM = NdArray([-3.4305117, -2.4405117, -1.4405117, -0.4405117], shape=[4], strides=[1], layout=C | F (0x3), dynamic ndim=1) [INFO] [stdout] initial: -7.7607594 [INFO] [stdout] Delta: 0.01 [INFO] [stdout] Grad: -9.873127 [INFO] [stdout] actual: -7.7520466 [INFO] [stdout] predicted: -7.8594904 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] thread 'ops::logsoftmax::logsoftmax_tests::logsoftmax_test' (19) panicked at src/ops/testing.rs:37:9: [INFO] [stdout] assertion failed: error < 0.001 [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x6029f26876d2 - std::backtrace_rs::backtrace::libunwind::trace::h7cddb8376417e7cc [INFO] [stdout] at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9 [INFO] [stdout] 1: 0x6029f26876d2 - std::backtrace_rs::backtrace::trace_unsynchronized::hb4e41acf4b349ff1 [INFO] [stdout] at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14 [INFO] [stdout] 2: 0x6029f26876d2 - std::sys::backtrace::_print_fmt::h1222b80910ba6eb5 [INFO] [stdout] at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/sys/backtrace.rs:66:9 [INFO] [stdout] 3: 0x6029f26876d2 - ::fmt::h5bb8a979ba5db788 [INFO] [stdout] at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/sys/backtrace.rs:39:26 [INFO] [stdout] 4: 0x6029f2698ecf - core::fmt::rt::Argument::fmt::h2ee2c138a50a7796 [INFO] [stdout] at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/core/src/fmt/rt.rs:173:76 [INFO] [stdout] 5: 0x6029f2698ecf - core::fmt::write::h1e0dbf07fe3990bd [INFO] [stdout] at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/core/src/fmt/mod.rs:1468:25 [INFO] [stdout] 6: 0x6029f2654f83 - std::io::default_write_fmt::h7d7ad5ed6a883d81 [INFO] [stdout] at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/io/mod.rs:639:11 [INFO] [stdout] 7: 0x6029f2654f83 - std::io::Write::write_fmt::hc477d9325b345ece [INFO] [stdout] at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/io/mod.rs:1954:13 [INFO] [stdout] 8: 0x6029f2660d42 - std::sys::backtrace::BacktraceLock::print::h788d486777205086 [INFO] [stdout] at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/sys/backtrace.rs:42:9 [INFO] [stdout] 9: 0x6029f266579f - std::panicking::default_hook::{{closure}}::ha7bdfeb5949fc0fa [INFO] [stdout] at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/panicking.rs:301:27 [INFO] [stdout] 10: 0x6029f2665631 - std::panicking::default_hook::h6dad75ec721846f4 [INFO] [stdout] at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/panicking.rs:325:9 [INFO] [stdout] 11: 0x6029f25c0b5e - as core::ops::function::Fn>::call::h33799d04b0b96146 [INFO] [stdout] at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/alloc/src/boxed.rs:1999:9 [INFO] [stdout] 12: 0x6029f25c0b5e - test::test_main_with_exit_callback::{{closure}}::h880e31c829a2eb5d [INFO] [stdout] at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/test/src/lib.rs:145:21 [INFO] [stdout] 13: 0x6029f2665e3e - as core::ops::function::Fn>::call::h5e1b8c652ea49180 [INFO] [stdout] at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/alloc/src/boxed.rs:1999:9 [INFO] [stdout] 14: 0x6029f2665e3e - std::panicking::panic_with_hook::hba00e869ada17676 [INFO] [stdout] at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/panicking.rs:842:13 [INFO] [stdout] 15: 0x6029f2665bd6 - std::panicking::panic_handler::{{closure}}::h3d21149c258e5ceb [INFO] [stdout] at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/panicking.rs:700:13 [INFO] [stdout] 16: 0x6029f2660e79 - std::sys::backtrace::__rust_end_short_backtrace::h4f5d9b9dfb3e6ec1 [INFO] [stdout] at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/sys/backtrace.rs:174:18 [INFO] [stdout] 17: 0x6029f26491ed - __rustc[9a7a9f9af7564de1]::rust_begin_unwind [INFO] [stdout] at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/panicking.rs:698:5 [INFO] [stdout] 18: 0x6029f26a09e0 - core::panicking::panic_fmt::h78e817a90331d98b [INFO] [stdout] at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/core/src/panicking.rs:75:14 [INFO] [stdout] 19: 0x6029f26a09bc - core::panicking::panic::h33d2d00634ffed6f [INFO] [stdout] at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/core/src/panicking.rs:145:5 [INFO] [stdout] 20: 0x6029f257f28b - backprop::ops::testing::validate_grad::habd6442d3d133a9e [INFO] [stdout] at /opt/rustwide/workdir/src/ops/testing.rs:37:9 [INFO] [stdout] 21: 0x6029f258a50d - backprop::ops::logsoftmax::logsoftmax_tests::logsoftmax_test::hd7c2d5c582ff2ab8 [INFO] [stdout] at /opt/rustwide/workdir/src/ops/logsoftmax.rs:86:9 [INFO] [stdout] 22: 0x6029f258a557 - backprop::ops::logsoftmax::logsoftmax_tests::logsoftmax_test::{{closure}}::h32c7fd4933b74ebf [INFO] [stdout] at /opt/rustwide/workdir/src/ops/logsoftmax.rs:80:25 [INFO] [stdout] 23: 0x6029f25793a6 - core::ops::function::FnOnce::call_once::haf3d19ae8b50c424 [INFO] [stdout] at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/core/src/ops/function.rs:253:5 [INFO] [stdout] 24: 0x6029f25c095b - core::ops::function::FnOnce::call_once::h7f4b4fba903e39d5 [INFO] [stdout] at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/core/src/ops/function.rs:253:5 [INFO] [stdout] 25: 0x6029f25c095b - test::__rust_begin_short_backtrace::h9277cb6a2ccfc000 [INFO] [stdout] at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/test/src/lib.rs:663:18 [INFO] [stdout] 26: 0x6029f25d6405 - test::run_test_in_process::{{closure}}::h9aea5ca90d1f4423 [INFO] [stdout] at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/test/src/lib.rs:686:74 [INFO] [stdout] 27: 0x6029f25d6405 - as core::ops::function::FnOnce<()>>::call_once::h364f5fe6cc8afa85 [INFO] [stdout] at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 28: 0x6029f25d6405 - std::panicking::catch_unwind::do_call::h2b2bec3317fe53ec [INFO] [stdout] at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/panicking.rs:590:40 [INFO] [stdout] 29: 0x6029f25d6405 - std::panicking::catch_unwind::hc3763734156da4af [INFO] [stdout] at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/panicking.rs:553:19 [INFO] [stdout] 30: 0x6029f25d6405 - std::panic::catch_unwind::h28038391e867eabc [INFO] [stdout] at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/panic.rs:359:14 [INFO] [stdout] 31: 0x6029f25d6405 - test::run_test_in_process::had0273166695a036 [INFO] [stdout] at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/test/src/lib.rs:686:27 [INFO] [stdout] 32: 0x6029f25d6405 - test::run_test::{{closure}}::h743d09d4bb476605 [INFO] [stdout] at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/test/src/lib.rs:607:43 [INFO] [stdout] 33: 0x6029f25ace24 - test::run_test::{{closure}}::he950b8f9118d37e2 [INFO] [stdout] at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/test/src/lib.rs:637:41 [INFO] [stdout] 34: 0x6029f25ace24 - std::sys::backtrace::__rust_begin_short_backtrace::hbfaffa6539f6abb7 [INFO] [stdout] at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/sys/backtrace.rs:158:18 [INFO] [stdout] 35: 0x6029f25b070a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hcce3c2c65b9c3b20 [INFO] [stdout] at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/thread/mod.rs:559:17 [INFO] [stdout] 36: 0x6029f25b070a - as core::ops::function::FnOnce<()>>::call_once::hb66b30b6d37985a5 [INFO] [stdout] at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 37: 0x6029f25b070a - std::panicking::catch_unwind::do_call::h992bbe2c32dc1d79 [INFO] [stdout] at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/panicking.rs:590:40 [INFO] [stdout] 38: 0x6029f25b070a - std::panicking::catch_unwind::h412991d5237de610 [INFO] [stdout] at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/panicking.rs:553:19 [INFO] [stdout] 39: 0x6029f25b070a - std::panic::catch_unwind::ha82b139b3eb5840a [INFO] [stdout] at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/panic.rs:359:14 [INFO] [stdout] 40: 0x6029f25b070a - std::thread::Builder::spawn_unchecked_::{{closure}}::ha823b36f5114938e [INFO] [stdout] at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/thread/mod.rs:557:30 [INFO] [stdout] 41: 0x6029f25b070a - core::ops::function::FnOnce::call_once{{vtable.shim}}::hf120e7b1db22ac07 [INFO] [stdout] at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/core/src/ops/function.rs:253:5 [INFO] [stdout] 42: 0x6029f265b0ff - as core::ops::function::FnOnce>::call_once::h3e049222c99298ac [INFO] [stdout] at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/alloc/src/boxed.rs:1985:9 [INFO] [stdout] 43: 0x6029f265b0ff - std::sys::pal::unix::thread::Thread::new::thread_start::h942e336943ad5963 [INFO] [stdout] at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/sys/pal/unix/thread.rs:118:17 [INFO] [stdout] 44: 0x73784522baa4 - [INFO] [stdout] 45: 0x7378452b8a34 - clone [INFO] [stdout] 46: 0x0 - [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] ops::logsoftmax::logsoftmax_tests::logsoftmax_test [INFO] [stdout] [INFO] [stdout] test result: FAILED. 8 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.25s [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass `--lib` [INFO] running `Command { std: "docker" "inspect" "ee3a95732453dbd36bbb849eb6ff10874ee8cc3ebc1619d9ee546d027b3dfc40", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ee3a95732453dbd36bbb849eb6ff10874ee8cc3ebc1619d9ee546d027b3dfc40", kill_on_drop: false }` [INFO] [stdout] ee3a95732453dbd36bbb849eb6ff10874ee8cc3ebc1619d9ee546d027b3dfc40