[INFO] crate finitediff 0.1.1 is already in cache
[INFO] testing finitediff-0.1.1 against 1.38.0 for beta-1.39-1
[INFO] extracting crate finitediff 0.1.1 into work/builds/worker-7/source
[INFO] validating manifest of crates.io crate finitediff 0.1.1 on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate finitediff 0.1.1
[INFO] finished tweaking crates.io crate finitediff 0.1.1
[INFO] tweaked toml for crates.io crate finitediff 0.1.1 written to work/builds/worker-7/source/Cargo.toml
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 74573f75d8a68525f08d7baeebc02de64c8bd6d18ab50a84c5b162ee6580ea01
[INFO] running `"docker" "start" "-a" "74573f75d8a68525f08d7baeebc02de64c8bd6d18ab50a84c5b162ee6580ea01"`
[INFO] [stderr]    Compiling finitediff v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/diff.rs:11:47
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub fn forward_diff_vec_f64(x: &Vec<f64>, f: &Fn(&Vec<f64>) -> f64) -> Vec<f64> {
[INFO] [stderr]    |                                               ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Vec<f64>) -> f64`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/diff.rs:22:47
[INFO] [stderr]    |
[INFO] [stderr] 22 | pub fn central_diff_vec_f64(x: &Vec<f64>, f: &Fn(&Vec<f64>) -> f64) -> Vec<f64> {
[INFO] [stderr]    |                                               ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Vec<f64>) -> f64`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/hessian.rs:14:53
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub fn forward_hessian_vec_f64(x: &Vec<f64>, grad: &Fn(&Vec<f64>) -> Vec<f64>) -> Vec<Vec<f64>> {
[INFO] [stderr]    |                                                     ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Vec<f64>) -> Vec<f64>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/hessian.rs:31:53
[INFO] [stderr]    |
[INFO] [stderr] 31 | pub fn central_hessian_vec_f64(x: &Vec<f64>, grad: &Fn(&Vec<f64>) -> Vec<f64>) -> Vec<Vec<f64>> {
[INFO] [stderr]    |                                                     ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Vec<f64>) -> Vec<f64>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/hessian.rs:50:12
[INFO] [stderr]    |
[INFO] [stderr] 50 |     grad: &Fn(&Vec<f64>) -> Vec<f64>,
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Vec<f64>) -> Vec<f64>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/hessian.rs:71:12
[INFO] [stderr]    |
[INFO] [stderr] 71 |     grad: &Fn(&Vec<f64>) -> Vec<f64>,
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Vec<f64>) -> Vec<f64>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/hessian.rs:95:57
[INFO] [stderr]    |
[INFO] [stderr] 95 | pub fn forward_hessian_nograd_vec_f64(x: &Vec<f64>, f: &Fn(&Vec<f64>) -> f64) -> Vec<Vec<f64>> {
[INFO] [stderr]    |                                                         ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Vec<f64>) -> f64`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/hessian.rs:128:9
[INFO] [stderr]     |
[INFO] [stderr] 128 |     f: &Fn(&Vec<f64>) -> f64,
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Vec<f64>) -> f64`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/jacobian.rs:12:52
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub fn forward_jacobian_vec_f64(x: &Vec<f64>, fs: &Fn(&Vec<f64>) -> Vec<f64>) -> Vec<Vec<f64>> {
[INFO] [stderr]    |                                                    ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Vec<f64>) -> Vec<f64>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/jacobian.rs:26:52
[INFO] [stderr]    |
[INFO] [stderr] 26 | pub fn central_jacobian_vec_f64(x: &Vec<f64>, fs: &Fn(&Vec<f64>) -> Vec<f64>) -> Vec<Vec<f64>> {
[INFO] [stderr]    |                                                    ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Vec<f64>) -> Vec<f64>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/jacobian.rs:42:10
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fs: &Fn(&Vec<f64>) -> Vec<f64>,
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Vec<f64>) -> Vec<f64>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/jacobian.rs:60:10
[INFO] [stderr]    |
[INFO] [stderr] 60 |     fs: &Fn(&Vec<f64>) -> Vec<f64>,
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Vec<f64>) -> Vec<f64>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/jacobian.rs:83:10
[INFO] [stderr]    |
[INFO] [stderr] 83 |     fs: &Fn(&Vec<f64>) -> Vec<f64>,
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Vec<f64>) -> Vec<f64>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/jacobian.rs:111:10
[INFO] [stderr]     |
[INFO] [stderr] 111 |     fs: &Fn(&Vec<f64>) -> Vec<f64>,
[INFO] [stderr]     |          ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Vec<f64>) -> Vec<f64>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/utils.rs:9:54
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub fn mod_and_calc_vec_f64<T>(x: &mut Vec<f64>, f: &Fn(&Vec<f64>) -> T, idx: usize, y: f64) -> T {
[INFO] [stderr]   |                                                      ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Vec<f64>) -> T`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:390:32
[INFO] [stderr]     |
[INFO] [stderr] 390 |     fn forward_diff(&self, f: &Fn(&Self) -> f64) -> Self;
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> f64`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:398:32
[INFO] [stderr]     |
[INFO] [stderr] 398 |     fn central_diff(&self, f: &Fn(&Self) -> f64) -> Self;
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> f64`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:406:37
[INFO] [stderr]     |
[INFO] [stderr] 406 |     fn forward_jacobian(&self, fs: &Fn(&Self) -> Self::OperatorOutput) -> Self::Jacobian;
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> Self::OperatorOutput`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:414:37
[INFO] [stderr]     |
[INFO] [stderr] 414 |     fn central_jacobian(&self, fs: &Fn(&Self) -> Self::OperatorOutput) -> Self::Jacobian;
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> Self::OperatorOutput`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:423:46
[INFO] [stderr]     |
[INFO] [stderr] 423 |     fn forward_jacobian_vec_prod(&self, fs: &Fn(&Self) -> Self::OperatorOutput, p: &Self) -> Self;
[INFO] [stderr]     |                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> Self::OperatorOutput`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:432:46
[INFO] [stderr]     |
[INFO] [stderr] 432 |     fn central_jacobian_vec_prod(&self, fs: &Fn(&Self) -> Self::OperatorOutput, p: &Self) -> Self;
[INFO] [stderr]     |                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> Self::OperatorOutput`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:436:14
[INFO] [stderr]     |
[INFO] [stderr] 436 |         fs: &Fn(&Self) -> Self::OperatorOutput,
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> Self::OperatorOutput`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:442:14
[INFO] [stderr]     |
[INFO] [stderr] 442 |         fs: &Fn(&Self) -> Self::OperatorOutput,
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> Self::OperatorOutput`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:453:35
[INFO] [stderr]     |
[INFO] [stderr] 453 |     fn forward_hessian(&self, g: &Fn(&Self) -> Self::OperatorOutput) -> Self::Hessian;
[INFO] [stderr]     |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> Self::OperatorOutput`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:462:35
[INFO] [stderr]     |
[INFO] [stderr] 462 |     fn central_hessian(&self, g: &Fn(&Self) -> Self::OperatorOutput) -> Self::Hessian;
[INFO] [stderr]     |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> Self::OperatorOutput`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:472:44
[INFO] [stderr]     |
[INFO] [stderr] 472 |     fn forward_hessian_vec_prod(&self, g: &Fn(&Self) -> Self::OperatorOutput, p: &Self) -> Self;
[INFO] [stderr]     |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> Self::OperatorOutput`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:482:44
[INFO] [stderr]     |
[INFO] [stderr] 482 |     fn central_hessian_vec_prod(&self, g: &Fn(&Self) -> Self::OperatorOutput, p: &Self) -> Self;
[INFO] [stderr]     |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> Self::OperatorOutput`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:490:42
[INFO] [stderr]     |
[INFO] [stderr] 490 |     fn forward_hessian_nograd(&self, f: &Fn(&Self) -> f64) -> Self::Hessian;
[INFO] [stderr]     |                                          ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> f64`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:503:13
[INFO] [stderr]     |
[INFO] [stderr] 503 |         f: &Fn(&Self) -> f64,
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> f64`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:516:32
[INFO] [stderr]     |
[INFO] [stderr] 516 |     fn forward_diff(&self, f: &Fn(&Self) -> f64) -> Self {
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> f64`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:520:32
[INFO] [stderr]     |
[INFO] [stderr] 520 |     fn central_diff(&self, f: &Fn(&Self) -> f64) -> Self {
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> f64`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:524:37
[INFO] [stderr]     |
[INFO] [stderr] 524 |     fn forward_jacobian(&self, fs: &Fn(&Self) -> Self::OperatorOutput) -> Self::Jacobian {
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> Self::OperatorOutput`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:528:37
[INFO] [stderr]     |
[INFO] [stderr] 528 |     fn central_jacobian(&self, fs: &Fn(&Self) -> Self::OperatorOutput) -> Self::Jacobian {
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> Self::OperatorOutput`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:532:46
[INFO] [stderr]     |
[INFO] [stderr] 532 |     fn forward_jacobian_vec_prod(&self, fs: &Fn(&Self) -> Self::OperatorOutput, p: &Self) -> Self {
[INFO] [stderr]     |                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> Self::OperatorOutput`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:536:46
[INFO] [stderr]     |
[INFO] [stderr] 536 |     fn central_jacobian_vec_prod(&self, fs: &Fn(&Self) -> Self::OperatorOutput, p: &Self) -> Self {
[INFO] [stderr]     |                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> Self::OperatorOutput`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:542:14
[INFO] [stderr]     |
[INFO] [stderr] 542 |         fs: &Fn(&Self) -> Self::OperatorOutput,
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> Self::OperatorOutput`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:550:14
[INFO] [stderr]     |
[INFO] [stderr] 550 |         fs: &Fn(&Self) -> Self::OperatorOutput,
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> Self::OperatorOutput`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:556:35
[INFO] [stderr]     |
[INFO] [stderr] 556 |     fn forward_hessian(&self, g: &Fn(&Self) -> Self::OperatorOutput) -> Self::Hessian {
[INFO] [stderr]     |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> Self::OperatorOutput`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:560:35
[INFO] [stderr]     |
[INFO] [stderr] 560 |     fn central_hessian(&self, g: &Fn(&Self) -> Self::OperatorOutput) -> Self::Hessian {
[INFO] [stderr]     |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> Self::OperatorOutput`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:564:44
[INFO] [stderr]     |
[INFO] [stderr] 564 |     fn forward_hessian_vec_prod(&self, g: &Fn(&Self) -> Self::OperatorOutput, p: &Self) -> Self {
[INFO] [stderr]     |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> Self::OperatorOutput`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:568:44
[INFO] [stderr]     |
[INFO] [stderr] 568 |     fn central_hessian_vec_prod(&self, g: &Fn(&Self) -> Self::OperatorOutput, p: &Self) -> Self {
[INFO] [stderr]     |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> Self::OperatorOutput`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:572:42
[INFO] [stderr]     |
[INFO] [stderr] 572 |     fn forward_hessian_nograd(&self, f: &Fn(&Self) -> f64) -> Self::Hessian {
[INFO] [stderr]     |                                          ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> f64`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:578:13
[INFO] [stderr]     |
[INFO] [stderr] 578 |         f: &Fn(&Self) -> f64,
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> f64`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.59s
[INFO] running `"docker" "inspect" "74573f75d8a68525f08d7baeebc02de64c8bd6d18ab50a84c5b162ee6580ea01"`
[INFO] running `"docker" "rm" "-f" "74573f75d8a68525f08d7baeebc02de64c8bd6d18ab50a84c5b162ee6580ea01"`
[INFO] [stdout] 74573f75d8a68525f08d7baeebc02de64c8bd6d18ab50a84c5b162ee6580ea01
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] c8b8ca8442ac5f6d7429b18ad89dadbc4c12cd06b55c3f2276985e1c428918ae
[INFO] running `"docker" "start" "-a" "c8b8ca8442ac5f6d7429b18ad89dadbc4c12cd06b55c3f2276985e1c428918ae"`
[INFO] [stderr]    Compiling finitediff v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/diff.rs:11:47
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub fn forward_diff_vec_f64(x: &Vec<f64>, f: &Fn(&Vec<f64>) -> f64) -> Vec<f64> {
[INFO] [stderr]    |                                               ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Vec<f64>) -> f64`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/diff.rs:22:47
[INFO] [stderr]    |
[INFO] [stderr] 22 | pub fn central_diff_vec_f64(x: &Vec<f64>, f: &Fn(&Vec<f64>) -> f64) -> Vec<f64> {
[INFO] [stderr]    |                                               ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Vec<f64>) -> f64`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/hessian.rs:14:53
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub fn forward_hessian_vec_f64(x: &Vec<f64>, grad: &Fn(&Vec<f64>) -> Vec<f64>) -> Vec<Vec<f64>> {
[INFO] [stderr]    |                                                     ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Vec<f64>) -> Vec<f64>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/hessian.rs:31:53
[INFO] [stderr]    |
[INFO] [stderr] 31 | pub fn central_hessian_vec_f64(x: &Vec<f64>, grad: &Fn(&Vec<f64>) -> Vec<f64>) -> Vec<Vec<f64>> {
[INFO] [stderr]    |                                                     ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Vec<f64>) -> Vec<f64>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/hessian.rs:50:12
[INFO] [stderr]    |
[INFO] [stderr] 50 |     grad: &Fn(&Vec<f64>) -> Vec<f64>,
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Vec<f64>) -> Vec<f64>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/hessian.rs:71:12
[INFO] [stderr]    |
[INFO] [stderr] 71 |     grad: &Fn(&Vec<f64>) -> Vec<f64>,
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Vec<f64>) -> Vec<f64>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/hessian.rs:95:57
[INFO] [stderr]    |
[INFO] [stderr] 95 | pub fn forward_hessian_nograd_vec_f64(x: &Vec<f64>, f: &Fn(&Vec<f64>) -> f64) -> Vec<Vec<f64>> {
[INFO] [stderr]    |                                                         ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Vec<f64>) -> f64`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/hessian.rs:128:9
[INFO] [stderr]     |
[INFO] [stderr] 128 |     f: &Fn(&Vec<f64>) -> f64,
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Vec<f64>) -> f64`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/jacobian.rs:12:52
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub fn forward_jacobian_vec_f64(x: &Vec<f64>, fs: &Fn(&Vec<f64>) -> Vec<f64>) -> Vec<Vec<f64>> {
[INFO] [stderr]    |                                                    ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Vec<f64>) -> Vec<f64>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/jacobian.rs:26:52
[INFO] [stderr]    |
[INFO] [stderr] 26 | pub fn central_jacobian_vec_f64(x: &Vec<f64>, fs: &Fn(&Vec<f64>) -> Vec<f64>) -> Vec<Vec<f64>> {
[INFO] [stderr]    |                                                    ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Vec<f64>) -> Vec<f64>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/jacobian.rs:42:10
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fs: &Fn(&Vec<f64>) -> Vec<f64>,
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Vec<f64>) -> Vec<f64>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/jacobian.rs:60:10
[INFO] [stderr]    |
[INFO] [stderr] 60 |     fs: &Fn(&Vec<f64>) -> Vec<f64>,
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Vec<f64>) -> Vec<f64>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/jacobian.rs:83:10
[INFO] [stderr]    |
[INFO] [stderr] 83 |     fs: &Fn(&Vec<f64>) -> Vec<f64>,
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Vec<f64>) -> Vec<f64>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/jacobian.rs:111:10
[INFO] [stderr]     |
[INFO] [stderr] 111 |     fs: &Fn(&Vec<f64>) -> Vec<f64>,
[INFO] [stderr]     |          ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Vec<f64>) -> Vec<f64>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/utils.rs:9:54
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub fn mod_and_calc_vec_f64<T>(x: &mut Vec<f64>, f: &Fn(&Vec<f64>) -> T, idx: usize, y: f64) -> T {
[INFO] [stderr]   |                                                      ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Vec<f64>) -> T`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:390:32
[INFO] [stderr]     |
[INFO] [stderr] 390 |     fn forward_diff(&self, f: &Fn(&Self) -> f64) -> Self;
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> f64`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:398:32
[INFO] [stderr]     |
[INFO] [stderr] 398 |     fn central_diff(&self, f: &Fn(&Self) -> f64) -> Self;
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> f64`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:406:37
[INFO] [stderr]     |
[INFO] [stderr] 406 |     fn forward_jacobian(&self, fs: &Fn(&Self) -> Self::OperatorOutput) -> Self::Jacobian;
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> Self::OperatorOutput`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:414:37
[INFO] [stderr]     |
[INFO] [stderr] 414 |     fn central_jacobian(&self, fs: &Fn(&Self) -> Self::OperatorOutput) -> Self::Jacobian;
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> Self::OperatorOutput`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:423:46
[INFO] [stderr]     |
[INFO] [stderr] 423 |     fn forward_jacobian_vec_prod(&self, fs: &Fn(&Self) -> Self::OperatorOutput, p: &Self) -> Self;
[INFO] [stderr]     |                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> Self::OperatorOutput`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:432:46
[INFO] [stderr]     |
[INFO] [stderr] 432 |     fn central_jacobian_vec_prod(&self, fs: &Fn(&Self) -> Self::OperatorOutput, p: &Self) -> Self;
[INFO] [stderr]     |                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> Self::OperatorOutput`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:436:14
[INFO] [stderr]     |
[INFO] [stderr] 436 |         fs: &Fn(&Self) -> Self::OperatorOutput,
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> Self::OperatorOutput`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:442:14
[INFO] [stderr]     |
[INFO] [stderr] 442 |         fs: &Fn(&Self) -> Self::OperatorOutput,
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> Self::OperatorOutput`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:453:35
[INFO] [stderr]     |
[INFO] [stderr] 453 |     fn forward_hessian(&self, g: &Fn(&Self) -> Self::OperatorOutput) -> Self::Hessian;
[INFO] [stderr]     |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> Self::OperatorOutput`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:462:35
[INFO] [stderr]     |
[INFO] [stderr] 462 |     fn central_hessian(&self, g: &Fn(&Self) -> Self::OperatorOutput) -> Self::Hessian;
[INFO] [stderr]     |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> Self::OperatorOutput`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:472:44
[INFO] [stderr]     |
[INFO] [stderr] 472 |     fn forward_hessian_vec_prod(&self, g: &Fn(&Self) -> Self::OperatorOutput, p: &Self) -> Self;
[INFO] [stderr]     |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> Self::OperatorOutput`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:482:44
[INFO] [stderr]     |
[INFO] [stderr] 482 |     fn central_hessian_vec_prod(&self, g: &Fn(&Self) -> Self::OperatorOutput, p: &Self) -> Self;
[INFO] [stderr]     |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> Self::OperatorOutput`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:490:42
[INFO] [stderr]     |
[INFO] [stderr] 490 |     fn forward_hessian_nograd(&self, f: &Fn(&Self) -> f64) -> Self::Hessian;
[INFO] [stderr]     |                                          ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> f64`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:503:13
[INFO] [stderr]     |
[INFO] [stderr] 503 |         f: &Fn(&Self) -> f64,
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> f64`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:516:32
[INFO] [stderr]     |
[INFO] [stderr] 516 |     fn forward_diff(&self, f: &Fn(&Self) -> f64) -> Self {
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> f64`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:520:32
[INFO] [stderr]     |
[INFO] [stderr] 520 |     fn central_diff(&self, f: &Fn(&Self) -> f64) -> Self {
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> f64`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:524:37
[INFO] [stderr]     |
[INFO] [stderr] 524 |     fn forward_jacobian(&self, fs: &Fn(&Self) -> Self::OperatorOutput) -> Self::Jacobian {
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> Self::OperatorOutput`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:528:37
[INFO] [stderr]     |
[INFO] [stderr] 528 |     fn central_jacobian(&self, fs: &Fn(&Self) -> Self::OperatorOutput) -> Self::Jacobian {
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> Self::OperatorOutput`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:532:46
[INFO] [stderr]     |
[INFO] [stderr] 532 |     fn forward_jacobian_vec_prod(&self, fs: &Fn(&Self) -> Self::OperatorOutput, p: &Self) -> Self {
[INFO] [stderr]     |                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> Self::OperatorOutput`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:536:46
[INFO] [stderr]     |
[INFO] [stderr] 536 |     fn central_jacobian_vec_prod(&self, fs: &Fn(&Self) -> Self::OperatorOutput, p: &Self) -> Self {
[INFO] [stderr]     |                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> Self::OperatorOutput`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:542:14
[INFO] [stderr]     |
[INFO] [stderr] 542 |         fs: &Fn(&Self) -> Self::OperatorOutput,
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> Self::OperatorOutput`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:550:14
[INFO] [stderr]     |
[INFO] [stderr] 550 |         fs: &Fn(&Self) -> Self::OperatorOutput,
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> Self::OperatorOutput`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:556:35
[INFO] [stderr]     |
[INFO] [stderr] 556 |     fn forward_hessian(&self, g: &Fn(&Self) -> Self::OperatorOutput) -> Self::Hessian {
[INFO] [stderr]     |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> Self::OperatorOutput`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:560:35
[INFO] [stderr]     |
[INFO] [stderr] 560 |     fn central_hessian(&self, g: &Fn(&Self) -> Self::OperatorOutput) -> Self::Hessian {
[INFO] [stderr]     |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> Self::OperatorOutput`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:564:44
[INFO] [stderr]     |
[INFO] [stderr] 564 |     fn forward_hessian_vec_prod(&self, g: &Fn(&Self) -> Self::OperatorOutput, p: &Self) -> Self {
[INFO] [stderr]     |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> Self::OperatorOutput`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:568:44
[INFO] [stderr]     |
[INFO] [stderr] 568 |     fn central_hessian_vec_prod(&self, g: &Fn(&Self) -> Self::OperatorOutput, p: &Self) -> Self {
[INFO] [stderr]     |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> Self::OperatorOutput`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:572:42
[INFO] [stderr]     |
[INFO] [stderr] 572 |     fn forward_hessian_nograd(&self, f: &Fn(&Self) -> f64) -> Self::Hessian {
[INFO] [stderr]     |                                          ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> f64`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:578:13
[INFO] [stderr]     |
[INFO] [stderr] 578 |         f: &Fn(&Self) -> f64,
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self) -> f64`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.93s
[INFO] running `"docker" "inspect" "c8b8ca8442ac5f6d7429b18ad89dadbc4c12cd06b55c3f2276985e1c428918ae"`
[INFO] running `"docker" "rm" "-f" "c8b8ca8442ac5f6d7429b18ad89dadbc4c12cd06b55c3f2276985e1c428918ae"`
[INFO] [stdout] c8b8ca8442ac5f6d7429b18ad89dadbc4c12cd06b55c3f2276985e1c428918ae
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen"`
[INFO] [stdout] c2fb80cca60f22b52e3ed5f99a3de7b9e2a1931d9611cc61e5268017ce7916e5
[INFO] running `"docker" "start" "-a" "c2fb80cca60f22b52e3ed5f99a3de7b9e2a1931d9611cc61e5268017ce7916e5"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/finitediff-8050a38a03a29b30
[INFO] [stdout] 
[INFO] [stdout] running 28 tests
[INFO] [stdout] test diff::tests::test_forward_diff_vec_f64 ... ok
[INFO] [stdout] test diff::tests::test_central_diff_vec_f64 ... ok
[INFO] [stdout] test hessian::tests::test_central_hessian_vec_f64 ... ok
[INFO] [stdout] test hessian::tests::test_central_hessian_vec_prod_vec_f64 ... ok
[INFO] [stdout] test hessian::tests::test_forward_hessian_nograd_sparse_vec_f64 ... ok
[INFO] [stdout] test hessian::tests::test_forward_hessian_vec_f64 ... ok
[INFO] [stdout] test hessian::tests::test_forward_hessian_nograd_vec_f64 ... ok
[INFO] [stdout] test hessian::tests::test_forward_hessian_vec_prod_vec_f64 ... ok
[INFO] [stdout] test jacobian::tests::test_central_jacobian_pert_vec_f64 ... ok
[INFO] [stdout] test jacobian::tests::test_central_jacobian_vec_f64 ... ok
[INFO] [stdout] test jacobian::tests::test_central_jacobian_vec_prod_vec_f64 ... ok
[INFO] [stdout] test jacobian::tests::test_forward_jacobian_vec_f64 ... ok
[INFO] [stdout] test jacobian::tests::test_forward_jacobian_pert_vec_f64 ... ok
[INFO] [stdout] test jacobian::tests::test_forward_jacobian_vec_prod_vec_f64 ... ok
[INFO] [stdout] test tests_vec::test_central_diff_vec_f64_trait ... ok
[INFO] [stdout] test tests_vec::test_central_hessian_vec_f64_trait ... ok
[INFO] [stdout] test tests_vec::test_central_hessian_vec_prod_vec_f64_trait ... ok
[INFO] [stdout] test tests_vec::test_central_jacobian_pert_vec_f64_trait ... ok
[INFO] [stdout] test tests_vec::test_central_jacobian_vec_f64_trait ... ok
[INFO] [stdout] test tests_vec::test_central_jacobian_vec_prod_vec_f64_trait ... ok
[INFO] [stdout] test tests_vec::test_forward_diff_vec_f64_trait ... ok
[INFO] [stdout] test tests_vec::test_forward_hessian_nograd_sparse_vec_f64_trait ... ok
[INFO] [stdout] test tests_vec::test_forward_hessian_vec_f64_trait ... ok
[INFO] [stdout] test tests_vec::test_forward_hessian_nograd_vec_f64_trait ... ok
[INFO] [stdout] test tests_vec::test_forward_hessian_vec_prod_vec_f64_trait ... ok
[INFO] [stdout] test tests_vec::test_forward_jacobian_pert_vec_f64_trait ... ok
[INFO] [stdout] test tests_vec::test_forward_jacobian_vec_prod_vec_f64_trait ... ok
[INFO] [stdout] test tests_vec::test_forward_jacobian_vec_f64_trait ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 28 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests finitediff
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test src/lib.rs -  (line 316) ... ok
[INFO] [stdout] test src/lib.rs -  (line 260) ... ok
[INFO] [stdout] test src/lib.rs -  (line 55) ... ok
[INFO] [stdout] test src/lib.rs -  (line 167) ... ok
[INFO] [stdout] test src/lib.rs -  (line 89) ... ok
[INFO] [stdout] test src/lib.rs -  (line 226) ... ok
[INFO] [stdout] test src/lib.rs -  (line 132) ... ok
[INFO] [stdout] test src/lib.rs -  (line 287) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "c2fb80cca60f22b52e3ed5f99a3de7b9e2a1931d9611cc61e5268017ce7916e5"`
[INFO] running `"docker" "rm" "-f" "c2fb80cca60f22b52e3ed5f99a3de7b9e2a1931d9611cc61e5268017ce7916e5"`
[INFO] [stdout] c2fb80cca60f22b52e3ed5f99a3de7b9e2a1931d9611cc61e5268017ce7916e5