[INFO] cloning repository https://github.com/takenta/feedforward_demo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/takenta/feedforward_demo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftakenta%2Ffeedforward_demo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftakenta%2Ffeedforward_demo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fac08e6bb2bc9817edfe9d2789a8787bac3ef699
[INFO] checking takenta/feedforward_demo against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftakenta%2Ffeedforward_demo" "/workspace/builds/worker-25/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-25/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/takenta/feedforward_demo on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/takenta/feedforward_demo
[INFO] finished tweaking git repo https://github.com/takenta/feedforward_demo
[INFO] tweaked toml for git repo https://github.com/takenta/feedforward_demo written to /workspace/builds/worker-25/source/Cargo.toml
[INFO] crate git repo https://github.com/takenta/feedforward_demo already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 18bbedc36119c8caecc3e6a18d713fe362c16ba2e65d1f75444927a1bde28722
[INFO] running `Command { std: "docker" "start" "-a" "18bbedc36119c8caecc3e6a18d713fe362c16ba2e65d1f75444927a1bde28722", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "18bbedc36119c8caecc3e6a18d713fe362c16ba2e65d1f75444927a1bde28722", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18bbedc36119c8caecc3e6a18d713fe362c16ba2e65d1f75444927a1bde28722", kill_on_drop: false }`
[INFO] [stdout] 18bbedc36119c8caecc3e6a18d713fe362c16ba2e65d1f75444927a1bde28722
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c28fff6362a0e532b59e53803e4d84ca4d933db9940c5b242798c701b3c07a5d
[INFO] running `Command { std: "docker" "start" "-a" "c28fff6362a0e532b59e53803e4d84ca4d933db9940c5b242798c701b3c07a5d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking libc v0.2.10
[INFO] [stderr]     Checking rand v0.3.14
[INFO] [stderr]     Checking deep_learning v1.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/tools/feed_forward.rs:7:19
[INFO] [stdout]   |
[INFO] [stdout] 7 |     func: &'a Box<Fn(DualNumber) -> DualNumber>,
[INFO] [stdout]   |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(DualNumber) -> DualNumber`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/tools/feed_forward.rs:7:19
[INFO] [stdout]   |
[INFO] [stdout] 7 |     func: &'a Box<Fn(DualNumber) -> DualNumber>,
[INFO] [stdout]   |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(DualNumber) -> DualNumber`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/tools/feed_forward.rs:11:81
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub fn new(weights: Vec<f64>, len_row: usize, bias: Vec<f64>, func: &'a Box<Fn(DualNumber) -> DualNumber>) -> FeedForward<'a> {
[INFO] [stdout]    |                                                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(DualNumber) -> DualNumber`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/tools/feed_forward.rs:37:122
[INFO] [stdout]    |
[INFO] [stdout] 37 | ...ror: &'b Box<Fn(&DualNumber, &DualNumber) -> DualNumber>) -> Vec<f64> {
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&DualNumber, &DualNumber) -> DualNumber`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/tools/feed_forward.rs:11:81
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub fn new(weights: Vec<f64>, len_row: usize, bias: Vec<f64>, func: &'a Box<Fn(DualNumber) -> DualNumber>) -> FeedForward<'a> {
[INFO] [stdout]    |                                                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(DualNumber) -> DualNumber`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:30:28
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let func_hide_rel: Box<Fn(DualNumber) -> DualNumber> = Box::new(move |x: DualNumber| (DualNumber::new(1.0) - (-x).exp()).recip()); //...
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(DualNumber) -> DualNumber`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/tools/feed_forward.rs:37:122
[INFO] [stdout]    |
[INFO] [stdout] 37 | ...ror: &'b Box<Fn(&DualNumber, &DualNumber) -> DualNumber>) -> Vec<f64> {
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&DualNumber, &DualNumber) -> DualNumber`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:31:26
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let func_output: Box<Fn(DualNumber) -> DualNumber> = Box::new(move |x: DualNumber| x); // 恒等写像
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(DualNumber) -> DualNumber`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:30:28
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let func_hide_rel: Box<Fn(DualNumber) -> DualNumber> = Box::new(move |x: DualNumber| (DualNumber::new(1.0) - (-x).exp()).recip()); //...
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(DualNumber) -> DualNumber`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:39:25
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let error_func: Box<Fn(&DualNumber, &DualNumber) -> DualNumber> = Box::new(move |&output, &teacher| (output-teacher).powf(2.0) * Dual...
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&DualNumber, &DualNumber) -> DualNumber`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:31:26
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let func_output: Box<Fn(DualNumber) -> DualNumber> = Box::new(move |x: DualNumber| x); // 恒等写像
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(DualNumber) -> DualNumber`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:39:25
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let error_func: Box<Fn(&DualNumber, &DualNumber) -> DualNumber> = Box::new(move |&output, &teacher| (output-teacher).powf(2.0) * Dual...
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&DualNumber, &DualNumber) -> DualNumber`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.85s
[INFO] running `Command { std: "docker" "inspect" "c28fff6362a0e532b59e53803e4d84ca4d933db9940c5b242798c701b3c07a5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c28fff6362a0e532b59e53803e4d84ca4d933db9940c5b242798c701b3c07a5d", kill_on_drop: false }`
[INFO] [stdout] c28fff6362a0e532b59e53803e4d84ca4d933db9940c5b242798c701b3c07a5d