[INFO] fetching crate tetris_core 0.2.0...
[INFO] checking tetris_core-0.2.0 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate tetris_core 0.2.0 into /workspace/builds/worker-89/source
[INFO] validating manifest of crates.io crate tetris_core 0.2.0 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tetris_core 0.2.0
[INFO] finished tweaking crates.io crate tetris_core 0.2.0
[INFO] tweaked toml for crates.io crate tetris_core 0.2.0 written to /workspace/builds/worker-89/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-89/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-89/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 029c0f9f11cb572489ba5d5a8292413a1f92a28b26283d923d6e5153562e94ba
[INFO] running `Command { std: "docker" "start" "-a" "029c0f9f11cb572489ba5d5a8292413a1f92a28b26283d923d6e5153562e94ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "029c0f9f11cb572489ba5d5a8292413a1f92a28b26283d923d6e5153562e94ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "029c0f9f11cb572489ba5d5a8292413a1f92a28b26283d923d6e5153562e94ba", kill_on_drop: false }`
[INFO] [stdout] 029c0f9f11cb572489ba5d5a8292413a1f92a28b26283d923d6e5153562e94ba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-89/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-89/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2f3083cb733b4c9da98dc33d79718b1626d2f0a0de0850bcfdcc6259cae9debd
[INFO] running `Command { std: "docker" "start" "-a" "2f3083cb733b4c9da98dc33d79718b1626d2f0a0de0850bcfdcc6259cae9debd", kill_on_drop: false }`
[INFO] [stderr]     Checking tetris_core v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/game.rs:29:21
[INFO] [stdout]    |
[INFO] [stdout] 29 |     randomizer: Box<Randomizer + 'static>,
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Randomizer + 'static`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/game.rs:34:45
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn new(size: &Size, randomizer: Box<Randomizer + 'static>) -> Game {
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Randomizer + 'static`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/game.rs:56:56
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn random_figure(position: Point, randomizer: &Box<Randomizer + 'static>) -> ActiveFigure {
[INFO] [stdout]    |                                                        ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Randomizer + 'static`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/game.rs:29:21
[INFO] [stdout]    |
[INFO] [stdout] 29 |     randomizer: Box<Randomizer + 'static>,
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Randomizer + 'static`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/game.rs:34:45
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn new(size: &Size, randomizer: Box<Randomizer + 'static>) -> Game {
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Randomizer + 'static`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/game.rs:56:56
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn random_figure(position: Point, randomizer: &Box<Randomizer + 'static>) -> ActiveFigure {
[INFO] [stdout]    |                                                        ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Randomizer + 'static`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/game.rs:441:32
[INFO] [stdout]     |
[INFO] [stdout] 441 |     fn get_randomizer() -> Box<Randomizer> {
[INFO] [stdout]     |                                ^^^^^^^^^^ help: use `dyn`: `dyn Randomizer`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `Command { std: "docker" "inspect" "2f3083cb733b4c9da98dc33d79718b1626d2f0a0de0850bcfdcc6259cae9debd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f3083cb733b4c9da98dc33d79718b1626d2f0a0de0850bcfdcc6259cae9debd", kill_on_drop: false }`
[INFO] [stdout] 2f3083cb733b4c9da98dc33d79718b1626d2f0a0de0850bcfdcc6259cae9debd