[INFO] cloning repository https://github.com/ianprime0509/rsudoku [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ianprime0509/rsudoku" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fianprime0509%2Frsudoku", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fianprime0509%2Frsudoku'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 705536f0546f8f62d2ea311c6d7730ba4582e010 [INFO] checking ianprime0509/rsudoku against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fianprime0509%2Frsudoku" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/ianprime0509/rsudoku on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/ianprime0509/rsudoku [INFO] finished tweaking git repo https://github.com/ianprime0509/rsudoku [INFO] tweaked toml for git repo https://github.com/ianprime0509/rsudoku written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/ianprime0509/rsudoku 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded redox_syscall v0.1.31 [INFO] [stderr] Downloaded chan-signal v0.3.1 [INFO] [stderr] Downloaded either v1.1.0 [INFO] [stderr] Downloaded gcc v0.3.53 [INFO] [stderr] Downloaded rustc-demangle v0.1.5 [INFO] [stderr] Downloaded bit-set v0.4.0 [INFO] [stderr] Downloaded chan v0.1.19 [INFO] [stderr] Downloaded textwrap v0.7.0 [INFO] [stderr] Downloaded unicode-segmentation v1.2.0 [INFO] [stderr] Downloaded clap v2.26.0 [INFO] [stderr] Downloaded backtrace-sys v0.1.12 [INFO] [stderr] Downloaded backtrace v0.3.3 [INFO] [stderr] Downloaded itertools v0.6.2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 78f0aef5c3fc6f11d5e66e51b89fbad5558407128f11dc1b12675240ea34e3eb [INFO] running `Command { std: "docker" "start" "-a" "78f0aef5c3fc6f11d5e66e51b89fbad5558407128f11dc1b12675240ea34e3eb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "78f0aef5c3fc6f11d5e66e51b89fbad5558407128f11dc1b12675240ea34e3eb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "78f0aef5c3fc6f11d5e66e51b89fbad5558407128f11dc1b12675240ea34e3eb", kill_on_drop: false }` [INFO] [stdout] 78f0aef5c3fc6f11d5e66e51b89fbad5558407128f11dc1b12675240ea34e3eb [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] a2f21156ed928036c95dcceb5efe35a8315c9cfa71d389cb89848914230a56d8 [INFO] running `Command { std: "docker" "start" "-a" "a2f21156ed928036c95dcceb5efe35a8315c9cfa71d389cb89848914230a56d8", kill_on_drop: false }` [INFO] [stderr] Checking libc v0.2.30 [INFO] [stderr] Compiling gcc v0.3.53 [INFO] [stderr] Checking unicode-width v0.1.4 [INFO] [stderr] Checking rustc-demangle v0.1.5 [INFO] [stderr] Checking bit-vec v0.4.4 [INFO] [stderr] Checking cfg-if v0.1.2 [INFO] [stderr] Checking vec_map v0.8.0 [INFO] [stderr] Checking bitflags v0.9.1 [INFO] [stderr] Checking lazy_static v0.2.8 [INFO] [stderr] Checking either v1.1.0 [INFO] [stderr] Checking strsim v0.6.0 [INFO] [stderr] Checking unicode-segmentation v1.2.0 [INFO] [stderr] Checking itertools v0.6.2 [INFO] [stderr] Checking bit-set v0.4.0 [INFO] [stderr] Checking rand v0.3.16 [INFO] [stderr] Checking term_size v0.3.0 [INFO] [stderr] Checking atty v0.2.2 [INFO] [stderr] Checking termion v1.5.1 [INFO] [stderr] Checking textwrap v0.7.0 [INFO] [stderr] Checking clap v2.26.0 [INFO] [stderr] Compiling backtrace-sys v0.1.12 [INFO] [stderr] Checking chan v0.1.19 [INFO] [stderr] Checking chan-signal v0.3.1 [INFO] [stderr] Checking backtrace v0.3.3 [INFO] [stderr] Checking error-chain v0.10.0 [INFO] [stderr] Checking rsudoku v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `Default` is imported redundantly [INFO] [stdout] --> src/game.rs:19:5 [INFO] [stdout] | [INFO] [stdout] 19 | use std::default::Default; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:124:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Default` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `rand` is imported redundantly [INFO] [stdout] --> src/game.rs:21:12 [INFO] [stdout] | [INFO] [stdout] 21 | use rand::{self, Rng}; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:24:1 [INFO] [stdout] | [INFO] [stdout] 24 | extern crate rand; [INFO] [stdout] | ------------------ the item `rand` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Default` is imported redundantly [INFO] [stdout] --> src/sudoku.rs:17:5 [INFO] [stdout] | [INFO] [stdout] 17 | use std::default::Default; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:124:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Default` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `IntoIterator` is imported redundantly [INFO] [stdout] --> src/sudoku.rs:19:17 [INFO] [stdout] | [INFO] [stdout] 19 | use std::iter::{IntoIterator, Iterator}; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:124:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `IntoIterator` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Iterator` is imported redundantly [INFO] [stdout] --> src/sudoku.rs:19:31 [INFO] [stdout] | [INFO] [stdout] 19 | use std::iter::{IntoIterator, Iterator}; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:124:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Iterator` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `rand` is imported redundantly [INFO] [stdout] --> src/sudoku.rs:23:12 [INFO] [stdout] | [INFO] [stdout] 23 | use rand::{self, Rng}; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:24:1 [INFO] [stdout] | [INFO] [stdout] 24 | extern crate rand; [INFO] [stdout] | ------------------ the item `rand` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Drop` is imported redundantly [INFO] [stdout] --> src/tui.rs:29:5 [INFO] [stdout] | [INFO] [stdout] 29 | use std::ops::Drop; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:124:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Drop` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `chan` is imported redundantly [INFO] [stdout] --> src/tui.rs:32:12 [INFO] [stdout] | [INFO] [stdout] 32 | use chan::{self, Receiver}; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:18:1 [INFO] [stdout] | [INFO] [stdout] 18 | extern crate chan; [INFO] [stdout] | ------------------ the item `chan` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `chan_signal` is imported redundantly [INFO] [stdout] --> src/tui.rs:33:19 [INFO] [stdout] | [INFO] [stdout] 33 | use chan_signal::{self, Signal}; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:19:1 [INFO] [stdout] | [INFO] [stdout] 19 | extern crate chan_signal; [INFO] [stdout] | ------------------------- the item `chan_signal` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `termion` is imported redundantly [INFO] [stdout] --> src/tui.rs:34:15 [INFO] [stdout] | [INFO] [stdout] 34 | use termion::{self, clear, color, cursor, style}; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:25:1 [INFO] [stdout] | [INFO] [stdout] 25 | extern crate termion; [INFO] [stdout] | --------------------- the item `termion` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `...` range patterns are deprecated [INFO] [stdout] --> src/tui.rs:239:34 [INFO] [stdout] | [INFO] [stdout] 239 | Key::Char(c @ '1'...'9') => { [INFO] [stdout] | ^^^ help: use `..=` for an inclusive range [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 [INFO] [stdout] = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `...` range patterns are deprecated [INFO] [stdout] --> src/tui.rs:251:38 [INFO] [stdout] | [INFO] [stdout] 251 | Key::Char(c @ '1'...'9') => self.game.annotate(c.to_digit(10).unwrap() as u8), [INFO] [stdout] | ^^^ help: use `..=` for an inclusive range [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 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Default` is imported redundantly [INFO] [stdout] --> src/game.rs:19:5 [INFO] [stdout] | [INFO] [stdout] 19 | use std::default::Default; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:124:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Default` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `rand` is imported redundantly [INFO] [stdout] --> src/game.rs:21:12 [INFO] [stdout] | [INFO] [stdout] 21 | use rand::{self, Rng}; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:24:1 [INFO] [stdout] | [INFO] [stdout] 24 | extern crate rand; [INFO] [stdout] | ------------------ the item `rand` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Default` is imported redundantly [INFO] [stdout] --> src/sudoku.rs:17:5 [INFO] [stdout] | [INFO] [stdout] 17 | use std::default::Default; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:124:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Default` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `IntoIterator` is imported redundantly [INFO] [stdout] --> src/sudoku.rs:19:17 [INFO] [stdout] | [INFO] [stdout] 19 | use std::iter::{IntoIterator, Iterator}; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:124:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `IntoIterator` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Iterator` is imported redundantly [INFO] [stdout] --> src/sudoku.rs:19:31 [INFO] [stdout] | [INFO] [stdout] 19 | use std::iter::{IntoIterator, Iterator}; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:124:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Iterator` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `rand` is imported redundantly [INFO] [stdout] --> src/sudoku.rs:23:12 [INFO] [stdout] | [INFO] [stdout] 23 | use rand::{self, Rng}; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:24:1 [INFO] [stdout] | [INFO] [stdout] 24 | extern crate rand; [INFO] [stdout] | ------------------ the item `rand` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Drop` is imported redundantly [INFO] [stdout] --> src/tui.rs:29:5 [INFO] [stdout] | [INFO] [stdout] 29 | use std::ops::Drop; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:124:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Drop` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `chan` is imported redundantly [INFO] [stdout] --> src/tui.rs:32:12 [INFO] [stdout] | [INFO] [stdout] 32 | use chan::{self, Receiver}; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:18:1 [INFO] [stdout] | [INFO] [stdout] 18 | extern crate chan; [INFO] [stdout] | ------------------ the item `chan` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `chan_signal` is imported redundantly [INFO] [stdout] --> src/tui.rs:33:19 [INFO] [stdout] | [INFO] [stdout] 33 | use chan_signal::{self, Signal}; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:19:1 [INFO] [stdout] | [INFO] [stdout] 19 | extern crate chan_signal; [INFO] [stdout] | ------------------------- the item `chan_signal` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `termion` is imported redundantly [INFO] [stdout] --> src/tui.rs:34:15 [INFO] [stdout] | [INFO] [stdout] 34 | use termion::{self, clear, color, cursor, style}; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:25:1 [INFO] [stdout] | [INFO] [stdout] 25 | extern crate termion; [INFO] [stdout] | --------------------- the item `termion` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `...` range patterns are deprecated [INFO] [stdout] --> src/tui.rs:239:34 [INFO] [stdout] | [INFO] [stdout] 239 | Key::Char(c @ '1'...'9') => { [INFO] [stdout] | ^^^ help: use `..=` for an inclusive range [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 [INFO] [stdout] = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `...` range patterns are deprecated [INFO] [stdout] --> src/tui.rs:251:38 [INFO] [stdout] | [INFO] [stdout] 251 | Key::Char(c @ '1'...'9') => self.game.annotate(c.to_digit(10).unwrap() as u8), [INFO] [stdout] | ^^^ help: use `..=` for an inclusive range [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 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 12 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 12 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/bin/rsudoku.rs:169:53 [INFO] [stdout] | [INFO] [stdout] 169 | BufReader::new(Box::new(io::stdin()) as Box) [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 [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 169 | BufReader::new(Box::new(io::stdin()) as Box) [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/bin/rsudoku.rs:173:21 [INFO] [stdout] | [INFO] [stdout] 173 | })?) as Box) [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 [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 173 | })?) as Box) [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/bin/rsudoku.rs:169:53 [INFO] [stdout] | [INFO] [stdout] 169 | BufReader::new(Box::new(io::stdin()) as Box) [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 [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 169 | BufReader::new(Box::new(io::stdin()) as Box) [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/bin/rsudoku.rs:173:21 [INFO] [stdout] | [INFO] [stdout] 173 | })?) as Box) [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 [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 173 | })?) as Box) [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 19.13s [INFO] running `Command { std: "docker" "inspect" "a2f21156ed928036c95dcceb5efe35a8315c9cfa71d389cb89848914230a56d8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a2f21156ed928036c95dcceb5efe35a8315c9cfa71d389cb89848914230a56d8", kill_on_drop: false }` [INFO] [stdout] a2f21156ed928036c95dcceb5efe35a8315c9cfa71d389cb89848914230a56d8