[INFO] cloning repository https://github.com/meamuri/optimization_methods
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/meamuri/optimization_methods" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmeamuri%2Foptimization_methods", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmeamuri%2Foptimization_methods'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ebf50dd461de29582dfa3339acee7bd3750e6c01
[INFO] testing meamuri/optimization_methods against try#d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2 for pr-86479
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmeamuri%2Foptimization_methods" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/meamuri/optimization_methods on toolchain d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/meamuri/optimization_methods
[INFO] finished tweaking git repo https://github.com/meamuri/optimization_methods
[INFO] tweaked toml for git repo https://github.com/meamuri/optimization_methods written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/meamuri/optimization_methods already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1feed9808d0a1a7fb2079876584bdb4d26cf3680acce0c5cf5d1414f6619d40e
[INFO] running `Command { std: "docker" "start" "-a" "1feed9808d0a1a7fb2079876584bdb4d26cf3680acce0c5cf5d1414f6619d40e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1feed9808d0a1a7fb2079876584bdb4d26cf3680acce0c5cf5d1414f6619d40e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1feed9808d0a1a7fb2079876584bdb4d26cf3680acce0c5cf5d1414f6619d40e", kill_on_drop: false }`
[INFO] [stdout] 1feed9808d0a1a7fb2079876584bdb4d26cf3680acce0c5cf5d1414f6619d40e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 25f31c840ac3500ccfa5f762abcadb09eb74f5fdcf1d64ffdab3ffe08abe5278
[INFO] running `Command { std: "docker" "start" "-a" "25f31c840ac3500ccfa5f762abcadb09eb74f5fdcf1d64ffdab3ffe08abe5278", kill_on_drop: false }`
[INFO] [stderr]    Compiling optimization_methods v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/methods/single_dim_methods/golden_section.rs:11:55
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn golden_section(_a: f64, _b: f64, eps: f64, f: &Fn(f64) -> f64) -> f64 {
[INFO] [stdout]    |                                                       ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> f64`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/methods/single_dim_methods/newton.rs:1:25
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn first_derivative(f: &Fn(f64)-> f64, x: f64, h: f64) -> f64 {
[INFO] [stdout]   |                         ^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64)-> f64`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/methods/single_dim_methods/newton.rs:5:26
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn second_derivative(f: &Fn(f64) -> f64, x: f64, h: f64) -> f64 {
[INFO] [stdout]   |                          ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> f64`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/methods/single_dim_methods/newton.rs:9:62
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn newton_method(a: f64, b: f64, _u0: f64, eps: f64, f: &Fn(f64) -> f64) -> f64 {
[INFO] [stdout]   |                                                              ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> f64`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/methods/single_dim_methods/parabolic.rs:1:55
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn parabolic_method(a: f64, b: f64, eps: f64, f: &Fn(f64) -> f64) -> f64 {    
[INFO] [stdout]   |                                                       ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> f64`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/methods/single_dim_methods/parabolic.rs:63:49
[INFO] [stdout]    |
[INFO] [stdout] 63 | fn parabolas_min(u1: f64, u2: f64, u3: f64, f: &Fn(f64) -> f64) -> f64 {
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> f64`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/methods/single_dim_methods/segment_div.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 |     f:         &Fn(f64) -> f64
[INFO] [stdout]   |                 ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> f64`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/methods/multi_dim_methods/mod.rs:1:51
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn x_derivative(x: f64, y: f64, eps: f64, f: &Fn(f64, f64) -> f64) -> f64{
[INFO] [stdout]   |                                                   ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64, f64) -> f64`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/methods/multi_dim_methods/mod.rs:7:51
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn y_derivative(x: f64, y: f64, eps: f64, f: &Fn(f64,f64) -> f64) -> f64{
[INFO] [stdout]   |                                                   ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64,f64) -> f64`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/methods/multi_dim_methods/splitting_of_step.rs:3:68
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn splitting_of_step(x: f64, y: f64, alpha: f64, eps: f64, f: &Fn(f64, f64) -> f64) -> (f64, f64) {
[INFO] [stdout]   |                                                                    ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64, f64) -> f64`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/methods/multi_dim_methods/fastest_descent.rs:4:54
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn segment_divide_help(x: f64, y: f64, eps: f64, f: &Fn(f64, f64) -> f64) -> f64 {
[INFO] [stdout]   |                                                      ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64, f64) -> f64`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/methods/multi_dim_methods/fastest_descent.rs:19:56
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn help_func(x: f64, y: f64, alpha: f64, eps: f64, f: &Fn(f64, f64) -> f64) -> f64 {
[INFO] [stdout]    |                                                        ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64, f64) -> f64`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/methods/multi_dim_methods/fastest_descent.rs:24:54
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn fastest_descent(x: f64, y: f64, eps: f64, f: &Fn(f64, f64) -> f64) -> (f64, f64) {
[INFO] [stdout]    |                                                      ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64, f64) -> f64`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.97s
[INFO] running `Command { std: "docker" "inspect" "25f31c840ac3500ccfa5f762abcadb09eb74f5fdcf1d64ffdab3ffe08abe5278", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25f31c840ac3500ccfa5f762abcadb09eb74f5fdcf1d64ffdab3ffe08abe5278", kill_on_drop: false }`
[INFO] [stdout] 25f31c840ac3500ccfa5f762abcadb09eb74f5fdcf1d64ffdab3ffe08abe5278
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 79aad33cc1eba3fc984d99967c07237c186747dd9bc7d15422e0591b6dfebf89
[INFO] running `Command { std: "docker" "start" "-a" "79aad33cc1eba3fc984d99967c07237c186747dd9bc7d15422e0591b6dfebf89", kill_on_drop: false }`
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/methods/single_dim_methods/golden_section.rs:11:55
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn golden_section(_a: f64, _b: f64, eps: f64, f: &Fn(f64) -> f64) -> f64 {
[INFO] [stdout]    |                                                       ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> f64`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling optimization_methods v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/methods/single_dim_methods/newton.rs:1:25
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn first_derivative(f: &Fn(f64)-> f64, x: f64, h: f64) -> f64 {
[INFO] [stdout]   |                         ^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64)-> f64`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/methods/single_dim_methods/newton.rs:5:26
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn second_derivative(f: &Fn(f64) -> f64, x: f64, h: f64) -> f64 {
[INFO] [stdout]   |                          ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> f64`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/methods/single_dim_methods/newton.rs:9:62
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn newton_method(a: f64, b: f64, _u0: f64, eps: f64, f: &Fn(f64) -> f64) -> f64 {
[INFO] [stdout]   |                                                              ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> f64`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/methods/single_dim_methods/parabolic.rs:1:55
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn parabolic_method(a: f64, b: f64, eps: f64, f: &Fn(f64) -> f64) -> f64 {    
[INFO] [stdout]   |                                                       ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> f64`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/methods/single_dim_methods/parabolic.rs:63:49
[INFO] [stdout]    |
[INFO] [stdout] 63 | fn parabolas_min(u1: f64, u2: f64, u3: f64, f: &Fn(f64) -> f64) -> f64 {
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> f64`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/methods/single_dim_methods/segment_div.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 |     f:         &Fn(f64) -> f64
[INFO] [stdout]   |                 ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> f64`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/methods/multi_dim_methods/mod.rs:1:51
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn x_derivative(x: f64, y: f64, eps: f64, f: &Fn(f64, f64) -> f64) -> f64{
[INFO] [stdout]   |                                                   ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64, f64) -> f64`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/methods/multi_dim_methods/mod.rs:7:51
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn y_derivative(x: f64, y: f64, eps: f64, f: &Fn(f64,f64) -> f64) -> f64{
[INFO] [stdout]   |                                                   ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64,f64) -> f64`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/methods/multi_dim_methods/splitting_of_step.rs:3:68
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn splitting_of_step(x: f64, y: f64, alpha: f64, eps: f64, f: &Fn(f64, f64) -> f64) -> (f64, f64) {
[INFO] [stdout]   |                                                                    ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64, f64) -> f64`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/methods/multi_dim_methods/fastest_descent.rs:4:54
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn segment_divide_help(x: f64, y: f64, eps: f64, f: &Fn(f64, f64) -> f64) -> f64 {
[INFO] [stdout]   |                                                      ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64, f64) -> f64`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/methods/multi_dim_methods/fastest_descent.rs:19:56
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn help_func(x: f64, y: f64, alpha: f64, eps: f64, f: &Fn(f64, f64) -> f64) -> f64 {
[INFO] [stdout]    |                                                        ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64, f64) -> f64`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/methods/multi_dim_methods/fastest_descent.rs:24:54
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn fastest_descent(x: f64, y: f64, eps: f64, f: &Fn(f64, f64) -> f64) -> (f64, f64) {
[INFO] [stdout]    |                                                      ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64, f64) -> f64`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/methods/single_dim_methods/golden_section.rs:11:55
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn golden_section(_a: f64, _b: f64, eps: f64, f: &Fn(f64) -> f64) -> f64 {
[INFO] [stdout]    |                                                       ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> f64`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/methods/single_dim_methods/newton.rs:1:25
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn first_derivative(f: &Fn(f64)-> f64, x: f64, h: f64) -> f64 {
[INFO] [stdout]   |                         ^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64)-> f64`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/methods/single_dim_methods/newton.rs:5:26
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn second_derivative(f: &Fn(f64) -> f64, x: f64, h: f64) -> f64 {
[INFO] [stdout]   |                          ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> f64`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/methods/single_dim_methods/newton.rs:9:62
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn newton_method(a: f64, b: f64, _u0: f64, eps: f64, f: &Fn(f64) -> f64) -> f64 {
[INFO] [stdout]   |                                                              ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> f64`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/methods/single_dim_methods/parabolic.rs:1:55
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn parabolic_method(a: f64, b: f64, eps: f64, f: &Fn(f64) -> f64) -> f64 {    
[INFO] [stdout]   |                                                       ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> f64`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/methods/single_dim_methods/parabolic.rs:63:49
[INFO] [stdout]    |
[INFO] [stdout] 63 | fn parabolas_min(u1: f64, u2: f64, u3: f64, f: &Fn(f64) -> f64) -> f64 {
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> f64`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/methods/single_dim_methods/segment_div.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 |     f:         &Fn(f64) -> f64
[INFO] [stdout]   |                 ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> f64`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/methods/multi_dim_methods/mod.rs:1:51
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn x_derivative(x: f64, y: f64, eps: f64, f: &Fn(f64, f64) -> f64) -> f64{
[INFO] [stdout]   |                                                   ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64, f64) -> f64`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/methods/multi_dim_methods/mod.rs:7:51
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn y_derivative(x: f64, y: f64, eps: f64, f: &Fn(f64,f64) -> f64) -> f64{
[INFO] [stdout]   |                                                   ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64,f64) -> f64`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/methods/multi_dim_methods/splitting_of_step.rs:3:68
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn splitting_of_step(x: f64, y: f64, alpha: f64, eps: f64, f: &Fn(f64, f64) -> f64) -> (f64, f64) {
[INFO] [stdout]   |                                                                    ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64, f64) -> f64`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/methods/multi_dim_methods/fastest_descent.rs:4:54
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn segment_divide_help(x: f64, y: f64, eps: f64, f: &Fn(f64, f64) -> f64) -> f64 {
[INFO] [stdout]   |                                                      ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64, f64) -> f64`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/methods/multi_dim_methods/fastest_descent.rs:19:56
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn help_func(x: f64, y: f64, alpha: f64, eps: f64, f: &Fn(f64, f64) -> f64) -> f64 {
[INFO] [stdout]    |                                                        ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64, f64) -> f64`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/methods/multi_dim_methods/fastest_descent.rs:24:54
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn fastest_descent(x: f64, y: f64, eps: f64, f: &Fn(f64, f64) -> f64) -> (f64, f64) {
[INFO] [stdout]    |                                                      ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64, f64) -> f64`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.77s
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "79aad33cc1eba3fc984d99967c07237c186747dd9bc7d15422e0591b6dfebf89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79aad33cc1eba3fc984d99967c07237c186747dd9bc7d15422e0591b6dfebf89", kill_on_drop: false }`
[INFO] [stdout] 79aad33cc1eba3fc984d99967c07237c186747dd9bc7d15422e0591b6dfebf89
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 73e80cbd2aa5bc92d8ba89b6d42cfaabd2a9514cb71ba2981e157737d6855058
[INFO] running `Command { std: "docker" "start" "-a" "73e80cbd2aa5bc92d8ba89b6d42cfaabd2a9514cb71ba2981e157737d6855058", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/methods/single_dim_methods/golden_section.rs:11:55
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub fn golden_section(_a: f64, _b: f64, eps: f64, f: &Fn(f64) -> f64) -> f64 {
[INFO] [stderr]    |                                                       ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> f64`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/methods/single_dim_methods/newton.rs:1:25
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn first_derivative(f: &Fn(f64)-> f64, x: f64, h: f64) -> f64 {
[INFO] [stderr]   |                         ^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64)-> f64`
[INFO] [stderr]   |
[INFO] [stderr]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/methods/single_dim_methods/newton.rs:5:26
[INFO] [stderr]   |
[INFO] [stderr] 5 | fn second_derivative(f: &Fn(f64) -> f64, x: f64, h: f64) -> f64 {
[INFO] [stderr]   |                          ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> f64`
[INFO] [stderr]   |
[INFO] [stderr]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/methods/single_dim_methods/newton.rs:9:62
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub fn newton_method(a: f64, b: f64, _u0: f64, eps: f64, f: &Fn(f64) -> f64) -> f64 {
[INFO] [stderr]   |                                                              ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> f64`
[INFO] [stderr]   |
[INFO] [stderr]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/methods/single_dim_methods/parabolic.rs:1:55
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn parabolic_method(a: f64, b: f64, eps: f64, f: &Fn(f64) -> f64) -> f64 {    
[INFO] [stderr]   |                                                       ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> f64`
[INFO] [stderr]   |
[INFO] [stderr]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/methods/single_dim_methods/parabolic.rs:63:49
[INFO] [stderr]    |
[INFO] [stderr] 63 | fn parabolas_min(u1: f64, u2: f64, u3: f64, f: &Fn(f64) -> f64) -> f64 {
[INFO] [stderr]    |                                                 ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> f64`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/methods/single_dim_methods/segment_div.rs:5:8
[INFO] [stderr]   |
[INFO] [stderr] 5 |     f:         &Fn(f64) -> f64
[INFO] [stderr]   |                 ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> f64`
[INFO] [stderr]   |
[INFO] [stderr]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/methods/multi_dim_methods/mod.rs:1:51
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn x_derivative(x: f64, y: f64, eps: f64, f: &Fn(f64, f64) -> f64) -> f64{
[INFO] [stderr]   |                                                   ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64, f64) -> f64`
[INFO] [stderr]   |
[INFO] [stderr]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/methods/multi_dim_methods/mod.rs:7:51
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn y_derivative(x: f64, y: f64, eps: f64, f: &Fn(f64,f64) -> f64) -> f64{
[INFO] [stderr]   |                                                   ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64,f64) -> f64`
[INFO] [stderr]   |
[INFO] [stderr]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/methods/multi_dim_methods/splitting_of_step.rs:3:68
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn splitting_of_step(x: f64, y: f64, alpha: f64, eps: f64, f: &Fn(f64, f64) -> f64) -> (f64, f64) {
[INFO] [stderr]   |                                                                    ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64, f64) -> f64`
[INFO] [stderr]   |
[INFO] [stderr]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/methods/multi_dim_methods/fastest_descent.rs:4:54
[INFO] [stderr]   |
[INFO] [stderr] 4 | fn segment_divide_help(x: f64, y: f64, eps: f64, f: &Fn(f64, f64) -> f64) -> f64 {
[INFO] [stderr]   |                                                      ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64, f64) -> f64`
[INFO] [stderr]   |
[INFO] [stderr]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/methods/multi_dim_methods/fastest_descent.rs:19:56
[INFO] [stderr]    |
[INFO] [stderr] 19 | fn help_func(x: f64, y: f64, alpha: f64, eps: f64, f: &Fn(f64, f64) -> f64) -> f64 {
[INFO] [stderr]    |                                                        ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64, f64) -> f64`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/methods/multi_dim_methods/fastest_descent.rs:24:54
[INFO] [stderr]    |
[INFO] [stderr] 24 | pub fn fastest_descent(x: f64, y: f64, eps: f64, f: &Fn(f64, f64) -> f64) -> (f64, f64) {
[INFO] [stderr]    |                                                      ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64, f64) -> f64`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: `optimization_methods` (lib) generated 13 warnings
[INFO] [stderr] warning: `optimization_methods` (lib test) generated 13 warnings (13 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/optimization_methods-cb43b4a04ad8dc9b)
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/optimization_methods-e57aef114973e0ed)
[INFO] [stderr]      Running tests/integration_test.rs (/opt/rustwide/target/debug/deps/integration_test-e47b626efbee665c)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests optimization_methods
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "73e80cbd2aa5bc92d8ba89b6d42cfaabd2a9514cb71ba2981e157737d6855058", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73e80cbd2aa5bc92d8ba89b6d42cfaabd2a9514cb71ba2981e157737d6855058", kill_on_drop: false }`
[INFO] [stdout] 73e80cbd2aa5bc92d8ba89b6d42cfaabd2a9514cb71ba2981e157737d6855058