[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] checking tiberiusferreira/Autograd-Experiments against try#93086cfebfccb79083c59d0d3b2052944bba643c for pr-146440-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftiberiusferreira%2FAutograd-Experiments" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/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-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/tiberiusferreira/Autograd-Experiments on toolchain 93086cfebfccb79083c59d0d3b2052944bba643c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "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" "+93086cfebfccb79083c59d0d3b2052944bba643c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: file `/workspace/builds/worker-2-tc2/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] warning: `backprop` (manifest) generated 1 warning
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 25d9ae1965d89217a82b5ca05cd4f052484afebadc0fc409fac3945145d39bbe
[INFO] running `Command { std: "docker" "start" "-a" "25d9ae1965d89217a82b5ca05cd4f052484afebadc0fc409fac3945145d39bbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "25d9ae1965d89217a82b5ca05cd4f052484afebadc0fc409fac3945145d39bbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25d9ae1965d89217a82b5ca05cd4f052484afebadc0fc409fac3945145d39bbe", kill_on_drop: false }`
[INFO] [stdout] 25d9ae1965d89217a82b5ca05cd4f052484afebadc0fc409fac3945145d39bbe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b14462285c4270388798da6e11c4c464d842184373b8add71eb613f68aaa52a7
[INFO] running `Command { std: "docker" "start" "-a" "b14462285c4270388798da6e11c4c464d842184373b8add71eb613f68aaa52a7", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: 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: `backprop` (manifest) generated 1 warning
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]    Compiling ndarray v0.13.0
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking matrixmultiply v0.2.3
[INFO] [stderr]     Checking itertools v0.8.2
[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]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_pcg v0.2.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking rand_distr v0.2.2
[INFO] [stderr]     Checking ndarray-rand v0.11.0
[INFO] [stderr]     Checking 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: 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: 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<T: TensorBackend>(input: TrackedTensor<T>, computation: &dyn for<'b> Fn(&TrackedTensor<'b, T>) -> TrackedTensor<...
[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<T>) -> TrackedTensor<T>{
[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<T>) -> TrackedTensor<'_, T>{
[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<T>) -> TrackedTensor<T>{
[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<T>) -> TrackedTensor<'_, T>{
[INFO] [stdout]     |                                                                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.20s
[INFO] running `Command { std: "docker" "inspect" "b14462285c4270388798da6e11c4c464d842184373b8add71eb613f68aaa52a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b14462285c4270388798da6e11c4c464d842184373b8add71eb613f68aaa52a7", kill_on_drop: false }`
[INFO] [stdout] b14462285c4270388798da6e11c4c464d842184373b8add71eb613f68aaa52a7
