[INFO] cloning repository https://github.com/gasuketsu/rust-pingpong
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gasuketsu/rust-pingpong" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgasuketsu%2Frust-pingpong", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgasuketsu%2Frust-pingpong'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3a16c2b95dadff2661d64b40133993643d97a4e5
[INFO] testing gasuketsu/rust-pingpong against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgasuketsu%2Frust-pingpong" "/workspace/builds/worker-115/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-115/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gasuketsu/rust-pingpong on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gasuketsu/rust-pingpong
[INFO] finished tweaking git repo https://github.com/gasuketsu/rust-pingpong
[INFO] tweaked toml for git repo https://github.com/gasuketsu/rust-pingpong written to /workspace/builds/worker-115/source/Cargo.toml
[INFO] crate git repo https://github.com/gasuketsu/rust-pingpong already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-115/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-115/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 379d0e8497f381211f8a1c38bd45b19614fc5ea88d4abab7b7cb706f06ff33ac
[INFO] running `Command { std: "docker" "start" "-a" "379d0e8497f381211f8a1c38bd45b19614fc5ea88d4abab7b7cb706f06ff33ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "379d0e8497f381211f8a1c38bd45b19614fc5ea88d4abab7b7cb706f06ff33ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "379d0e8497f381211f8a1c38bd45b19614fc5ea88d4abab7b7cb706f06ff33ac", kill_on_drop: false }`
[INFO] [stdout] 379d0e8497f381211f8a1c38bd45b19614fc5ea88d4abab7b7cb706f06ff33ac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-115/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-115/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] abaa97c64db7fdac4f8edd66a3379c6194d02285b26f1b12060bbb06c76b204a
[INFO] running `Command { std: "docker" "start" "-a" "abaa97c64db7fdac4f8edd66a3379c6194d02285b26f1b12060bbb06c76b204a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling pingpong v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/pingpong.rs:9:43
[INFO] [stdout]   |
[INFO] [stdout] 9 |     fn next_state(self: Box<Self>) -> Box<State>;
[INFO] [stdout]   |                                           ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 9 -     fn next_state(self: Box<Self>) -> Box<State>;
[INFO] [stdout] 9 +     fn next_state(self: Box<Self>) -> Box<dyn State>;
[INFO] [stdout]   | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/pingpong.rs:19:43
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn next_state(self: Box<Self>) -> Box<State> {
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 19 -     fn next_state(self: Box<Self>) -> Box<State> {
[INFO] [stdout] 19 +     fn next_state(self: Box<Self>) -> Box<dyn State> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/pingpong.rs:31:43
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn next_state(self: Box<Self>) -> Box<State> {
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 31 -     fn next_state(self: Box<Self>) -> Box<State> {
[INFO] [stdout] 31 +     fn next_state(self: Box<Self>) -> Box<dyn State> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/pingpong.rs:20:36
[INFO] [stdout]    |
[INFO] [stdout] 20 |         Box::new(PongState) as Box<State>
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 20 -         Box::new(PongState) as Box<State>
[INFO] [stdout] 20 +         Box::new(PongState) as Box<dyn State>
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/pingpong.rs:32:36
[INFO] [stdout]    |
[INFO] [stdout] 32 |         Box::new(PingState) as Box<State>
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 32 -         Box::new(PingState) as Box<State>
[INFO] [stdout] 32 +         Box::new(PingState) as Box<dyn State>
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/main.rs:4:54
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut s = Box::new(pingpong::PingState) as Box<pingpong::State>;
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 4 -     let mut s = Box::new(pingpong::PingState) as Box<pingpong::State>;
[INFO] [stdout] 4 +     let mut s = Box::new(pingpong::PingState) as Box<dyn pingpong::State>;
[INFO] [stdout]   | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 42.38s
[INFO] running `Command { std: "docker" "inspect" "abaa97c64db7fdac4f8edd66a3379c6194d02285b26f1b12060bbb06c76b204a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "abaa97c64db7fdac4f8edd66a3379c6194d02285b26f1b12060bbb06c76b204a", kill_on_drop: false }`
[INFO] [stdout] abaa97c64db7fdac4f8edd66a3379c6194d02285b26f1b12060bbb06c76b204a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-115/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-115/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 61fd50cb552db7c80c8414b7df92f7e08bf365c450c011070d96fea9e232a511
[INFO] running `Command { std: "docker" "start" "-a" "61fd50cb552db7c80c8414b7df92f7e08bf365c450c011070d96fea9e232a511", kill_on_drop: false }`
[INFO] [stderr]    Compiling pingpong v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/pingpong.rs:9:43
[INFO] [stdout]   |
[INFO] [stdout] 9 |     fn next_state(self: Box<Self>) -> Box<State>;
[INFO] [stdout]   |                                           ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 9 -     fn next_state(self: Box<Self>) -> Box<State>;
[INFO] [stdout] 9 +     fn next_state(self: Box<Self>) -> Box<dyn State>;
[INFO] [stdout]   | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/pingpong.rs:19:43
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn next_state(self: Box<Self>) -> Box<State> {
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 19 -     fn next_state(self: Box<Self>) -> Box<State> {
[INFO] [stdout] 19 +     fn next_state(self: Box<Self>) -> Box<dyn State> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/pingpong.rs:31:43
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn next_state(self: Box<Self>) -> Box<State> {
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 31 -     fn next_state(self: Box<Self>) -> Box<State> {
[INFO] [stdout] 31 +     fn next_state(self: Box<Self>) -> Box<dyn State> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/pingpong.rs:20:36
[INFO] [stdout]    |
[INFO] [stdout] 20 |         Box::new(PongState) as Box<State>
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 20 -         Box::new(PongState) as Box<State>
[INFO] [stdout] 20 +         Box::new(PongState) as Box<dyn State>
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/pingpong.rs:32:36
[INFO] [stdout]    |
[INFO] [stdout] 32 |         Box::new(PingState) as Box<State>
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 32 -         Box::new(PingState) as Box<State>
[INFO] [stdout] 32 +         Box::new(PingState) as Box<dyn State>
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/main.rs:4:54
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut s = Box::new(pingpong::PingState) as Box<pingpong::State>;
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 4 -     let mut s = Box::new(pingpong::PingState) as Box<pingpong::State>;
[INFO] [stdout] 4 +     let mut s = Box::new(pingpong::PingState) as Box<dyn pingpong::State>;
[INFO] [stdout]   | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.71s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/pingpong-627c17a7bffd485f)
[INFO] running `Command { std: "docker" "inspect" "61fd50cb552db7c80c8414b7df92f7e08bf365c450c011070d96fea9e232a511", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61fd50cb552db7c80c8414b7df92f7e08bf365c450c011070d96fea9e232a511", kill_on_drop: false }`
[INFO] [stdout] 61fd50cb552db7c80c8414b7df92f7e08bf365c450c011070d96fea9e232a511
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-115/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-115/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8177f036d08dc8aaf261e8d0452e0f2bde5ec9791f761ef593c164ced750f778
[INFO] running `Command { std: "docker" "start" "-a" "8177f036d08dc8aaf261e8d0452e0f2bde5ec9791f761ef593c164ced750f778", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/pingpong.rs:9:43
[INFO] [stderr]   |
[INFO] [stderr] 9 |     fn next_state(self: Box<Self>) -> Box<State>;
[INFO] [stderr]   |                                           ^^^^^
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]   |
[INFO] [stderr] 9 -     fn next_state(self: Box<Self>) -> Box<State>;
[INFO] [stderr] 9 +     fn next_state(self: Box<Self>) -> Box<dyn State>;
[INFO] [stderr]   | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/pingpong.rs:19:43
[INFO] [stderr]    |
[INFO] [stderr] 19 |     fn next_state(self: Box<Self>) -> Box<State> {
[INFO] [stderr]    |                                           ^^^^^
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 19 -     fn next_state(self: Box<Self>) -> Box<State> {
[INFO] [stderr] 19 +     fn next_state(self: Box<Self>) -> Box<dyn State> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/pingpong.rs:31:43
[INFO] [stderr]    |
[INFO] [stderr] 31 |     fn next_state(self: Box<Self>) -> Box<State> {
[INFO] [stderr]    |                                           ^^^^^
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 31 -     fn next_state(self: Box<Self>) -> Box<State> {
[INFO] [stderr] 31 +     fn next_state(self: Box<Self>) -> Box<dyn State> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/pingpong.rs:20:36
[INFO] [stderr]    |
[INFO] [stderr] 20 |         Box::new(PongState) as Box<State>
[INFO] [stderr]    |                                    ^^^^^
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 20 -         Box::new(PongState) as Box<State>
[INFO] [stderr] 20 +         Box::new(PongState) as Box<dyn State>
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/pingpong.rs:32:36
[INFO] [stderr]    |
[INFO] [stderr] 32 |         Box::new(PingState) as Box<State>
[INFO] [stderr]    |                                    ^^^^^
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 32 -         Box::new(PingState) as Box<State>
[INFO] [stderr] 32 +         Box::new(PingState) as Box<dyn State>
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/main.rs:4:54
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let mut s = Box::new(pingpong::PingState) as Box<pingpong::State>;
[INFO] [stderr]   |                                                      ^^^^^^^^^^^^^^^
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]   |
[INFO] [stderr] 4 -     let mut s = Box::new(pingpong::PingState) as Box<pingpong::State>;
[INFO] [stderr] 4 +     let mut s = Box::new(pingpong::PingState) as Box<dyn pingpong::State>;
[INFO] [stderr]   | 
[INFO] [stderr] 
[INFO] [stderr] warning: `pingpong` (bin "pingpong" test) generated 6 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.21s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/pingpong-627c17a7bffd485f)
[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" "8177f036d08dc8aaf261e8d0452e0f2bde5ec9791f761ef593c164ced750f778", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8177f036d08dc8aaf261e8d0452e0f2bde5ec9791f761ef593c164ced750f778", kill_on_drop: false }`
[INFO] [stdout] 8177f036d08dc8aaf261e8d0452e0f2bde5ec9791f761ef593c164ced750f778