[INFO] cloning repository https://github.com/rnestler/clonable-vec-of-trait-objects-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rnestler/clonable-vec-of-trait-objects-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frnestler%2Fclonable-vec-of-trait-objects-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frnestler%2Fclonable-vec-of-trait-objects-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6a0e8b8273bc11e94f7dcf84a0a83d24eff74781
[INFO] building rnestler/clonable-vec-of-trait-objects-rs against try#d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 for pr-146237-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frnestler%2Fclonable-vec-of-trait-objects-rs" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/rnestler/clonable-vec-of-trait-objects-rs
[INFO] finished tweaking git repo https://github.com/rnestler/clonable-vec-of-trait-objects-rs
[INFO] tweaked toml for git repo https://github.com/rnestler/clonable-vec-of-trait-objects-rs written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/rnestler/clonable-vec-of-trait-objects-rs on toolchain d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/rnestler/clonable-vec-of-trait-objects-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 99ab2b73a7f146db41c81c749b8fdbd41db97d4d70c3a9d5b09ccb35ef5fdca2
[INFO] running `Command { std: "docker" "start" "-a" "99ab2b73a7f146db41c81c749b8fdbd41db97d4d70c3a9d5b09ccb35ef5fdca2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "99ab2b73a7f146db41c81c749b8fdbd41db97d4d70c3a9d5b09ccb35ef5fdca2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99ab2b73a7f146db41c81c749b8fdbd41db97d4d70c3a9d5b09ccb35ef5fdca2", kill_on_drop: false }`
[INFO] [stdout] 99ab2b73a7f146db41c81c749b8fdbd41db97d4d70c3a9d5b09ccb35ef5fdca2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 60426fbcd799585ae3eb99372442e02086888fcc50c77c044aa2c4319b9c524e
[INFO] running `Command { std: "docker" "start" "-a" "60426fbcd799585ae3eb99372442e02086888fcc50c77c044aa2c4319b9c524e", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]    Compiling clonable-vec-of-trait-objects v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/solution_c.rs:14:32
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn box_clone(&self) -> Box<BoxCloneableTrait> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn box_clone(&self) -> Box<dyn BoxCloneableTrait> {
[INFO] [stdout]    |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/solution_c.rs:4:32
[INFO] [stdout]   |
[INFO] [stdout] 4 |     fn box_clone(&self) -> Box<BoxCloneableTrait>; 
[INFO] [stdout]   |                                ^^^^^^^^^^^^^^^^^
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 4 |     fn box_clone(&self) -> Box<dyn BoxCloneableTrait>; 
[INFO] [stdout]   |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/solution_c.rs:8:32
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn box_clone(&self) -> Box<BoxCloneableTrait> {
[INFO] [stdout]   |                                ^^^^^^^^^^^^^^^^^
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn box_clone(&self) -> Box<dyn BoxCloneableTrait> {
[INFO] [stdout]   |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/solution_c.rs:19:32
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn clone_vec(vec: &Vec<Box<BoxCloneableTrait>>) -> Vec<Box<BoxCloneableTrait>>{
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn clone_vec(vec: &Vec<Box<dyn BoxCloneableTrait>>) -> Vec<Box<BoxCloneableTrait>>{
[INFO] [stdout]    |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/solution_c.rs:19:64
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn clone_vec(vec: &Vec<Box<BoxCloneableTrait>>) -> Vec<Box<BoxCloneableTrait>>{
[INFO] [stdout]    |                                                                ^^^^^^^^^^^^^^^^^
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn clone_vec(vec: &Vec<Box<BoxCloneableTrait>>) -> Vec<Box<dyn BoxCloneableTrait>>{
[INFO] [stdout]    |                                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/main.rs:7:22
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let vec: Vec<Box<Trait>> = vec![Box::new(A::new()), Box::new(B::new())];
[INFO] [stdout]   |                      ^^^^^
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let vec: Vec<Box<dyn Trait>> = vec![Box::new(A::new()), Box::new(B::new())];
[INFO] [stdout]   |                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:33:22
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let vec: Vec<Box<BoxCloneableTrait>> = vec![Box::new(A::new()), Box::new(B::new())];
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let vec: Vec<Box<dyn BoxCloneableTrait>> = vec![Box::new(A::new()), Box::new(B::new())];
[INFO] [stdout]    |                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.98s
[INFO] running `Command { std: "docker" "inspect" "60426fbcd799585ae3eb99372442e02086888fcc50c77c044aa2c4319b9c524e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60426fbcd799585ae3eb99372442e02086888fcc50c77c044aa2c4319b9c524e", kill_on_drop: false }`
[INFO] [stdout] 60426fbcd799585ae3eb99372442e02086888fcc50c77c044aa2c4319b9c524e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 326a3abccc9459bc4c45548e9a658444da04a3eb575d215cdfe50ae7eaaebec0
[INFO] running `Command { std: "docker" "start" "-a" "326a3abccc9459bc4c45548e9a658444da04a3eb575d215cdfe50ae7eaaebec0", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/solution_c.rs:14:32
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn box_clone(&self) -> Box<BoxCloneableTrait> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn box_clone(&self) -> Box<dyn BoxCloneableTrait> {
[INFO] [stdout]    |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/solution_c.rs:4:32
[INFO] [stdout]   |
[INFO] [stdout] 4 |     fn box_clone(&self) -> Box<BoxCloneableTrait>; 
[INFO] [stdout]   |                                ^^^^^^^^^^^^^^^^^
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 4 |     fn box_clone(&self) -> Box<dyn BoxCloneableTrait>; 
[INFO] [stdout]   |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/solution_c.rs:8:32
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn box_clone(&self) -> Box<BoxCloneableTrait> {
[INFO] [stdout]   |                                ^^^^^^^^^^^^^^^^^
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn box_clone(&self) -> Box<dyn BoxCloneableTrait> {
[INFO] [stdout]   |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/solution_c.rs:19:32
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn clone_vec(vec: &Vec<Box<BoxCloneableTrait>>) -> Vec<Box<BoxCloneableTrait>>{
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn clone_vec(vec: &Vec<Box<dyn BoxCloneableTrait>>) -> Vec<Box<BoxCloneableTrait>>{
[INFO] [stdout]    |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/solution_c.rs:19:64
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn clone_vec(vec: &Vec<Box<BoxCloneableTrait>>) -> Vec<Box<BoxCloneableTrait>>{
[INFO] [stdout]    |                                                                ^^^^^^^^^^^^^^^^^
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn clone_vec(vec: &Vec<Box<BoxCloneableTrait>>) -> Vec<Box<dyn BoxCloneableTrait>>{
[INFO] [stdout]    |                                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling clonable-vec-of-trait-objects v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/solution_c.rs:8:32
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn box_clone(&self) -> Box<BoxCloneableTrait> {
[INFO] [stdout]   |                                ^^^^^^^^^^^^^^^^^
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn box_clone(&self) -> Box<dyn BoxCloneableTrait> {
[INFO] [stdout]   |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/solution_c.rs:4:32
[INFO] [stdout]   |
[INFO] [stdout] 4 |     fn box_clone(&self) -> Box<BoxCloneableTrait>; 
[INFO] [stdout]   |                                ^^^^^^^^^^^^^^^^^
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 4 |     fn box_clone(&self) -> Box<dyn BoxCloneableTrait>; 
[INFO] [stdout]   |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/solution_c.rs:14:32
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn box_clone(&self) -> Box<BoxCloneableTrait> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn box_clone(&self) -> Box<dyn BoxCloneableTrait> {
[INFO] [stdout]    |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/solution_c.rs:19:32
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn clone_vec(vec: &Vec<Box<BoxCloneableTrait>>) -> Vec<Box<BoxCloneableTrait>>{
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn clone_vec(vec: &Vec<Box<dyn BoxCloneableTrait>>) -> Vec<Box<BoxCloneableTrait>>{
[INFO] [stdout]    |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/solution_c.rs:19:64
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn clone_vec(vec: &Vec<Box<BoxCloneableTrait>>) -> Vec<Box<BoxCloneableTrait>>{
[INFO] [stdout]    |                                                                ^^^^^^^^^^^^^^^^^
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn clone_vec(vec: &Vec<Box<BoxCloneableTrait>>) -> Vec<Box<dyn BoxCloneableTrait>>{
[INFO] [stdout]    |                                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/main.rs:7:22
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let vec: Vec<Box<Trait>> = vec![Box::new(A::new()), Box::new(B::new())];
[INFO] [stdout]   |                      ^^^^^
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let vec: Vec<Box<dyn Trait>> = vec![Box::new(A::new()), Box::new(B::new())];
[INFO] [stdout]   |                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:33:22
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let vec: Vec<Box<BoxCloneableTrait>> = vec![Box::new(A::new()), Box::new(B::new())];
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let vec: Vec<Box<dyn BoxCloneableTrait>> = vec![Box::new(A::new()), Box::new(B::new())];
[INFO] [stdout]    |                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.58s
[INFO] running `Command { std: "docker" "inspect" "326a3abccc9459bc4c45548e9a658444da04a3eb575d215cdfe50ae7eaaebec0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "326a3abccc9459bc4c45548e9a658444da04a3eb575d215cdfe50ae7eaaebec0", kill_on_drop: false }`
[INFO] [stdout] 326a3abccc9459bc4c45548e9a658444da04a3eb575d215cdfe50ae7eaaebec0
