[INFO] cloning repository https://github.com/maxbeutel/rust-ascii-art
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/maxbeutel/rust-ascii-art" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaxbeutel%2Frust-ascii-art", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaxbeutel%2Frust-ascii-art'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2021f741c9dea91ad36ccad393acb602c4a20efe
[INFO] checking maxbeutel/rust-ascii-art against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaxbeutel%2Frust-ascii-art" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/maxbeutel/rust-ascii-art on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/maxbeutel/rust-ascii-art
[INFO] finished tweaking git repo https://github.com/maxbeutel/rust-ascii-art
[INFO] tweaked toml for git repo https://github.com/maxbeutel/rust-ascii-art written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/maxbeutel/rust-ascii-art 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 89768fb46ba144af9bf8fe2b07a642db1d8f07198c3cc0312f8770fa832469ca
[INFO] running `Command { std: "docker" "start" "-a" "89768fb46ba144af9bf8fe2b07a642db1d8f07198c3cc0312f8770fa832469ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "89768fb46ba144af9bf8fe2b07a642db1d8f07198c3cc0312f8770fa832469ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89768fb46ba144af9bf8fe2b07a642db1d8f07198c3cc0312f8770fa832469ca", kill_on_drop: false }`
[INFO] [stdout] 89768fb46ba144af9bf8fe2b07a642db1d8f07198c3cc0312f8770fa832469ca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5e322c8fba44079efcf45db07a34066225ccad0ca48fc5af578dd706355d313c
[INFO] running `Command { std: "docker" "start" "-a" "5e322c8fba44079efcf45db07a34066225ccad0ca48fc5af578dd706355d313c", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]     Checking ascii-art v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/main.rs:26:10
[INFO] [stdout]    |
[INFO] [stdout] 26 |         };
[INFO] [stdout]    |          ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:66:43
[INFO] [stdout]    |
[INFO] [stdout] 66 | struct CombinedObject(Dimensions, Vec<Box<Plottable>>);
[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]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 66 | struct CombinedObject(Dimensions, Vec<Box<dyn Plottable>>);
[INFO] [stdout]    |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/main.rs:26:10
[INFO] [stdout]    |
[INFO] [stdout] 26 |         };
[INFO] [stdout]    |          ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:66:43
[INFO] [stdout]    |
[INFO] [stdout] 66 | struct CombinedObject(Dimensions, Vec<Box<Plottable>>);
[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]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 66 | struct CombinedObject(Dimensions, Vec<Box<dyn Plottable>>);
[INFO] [stdout]    |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:312:16
[INFO] [stdout]     |
[INFO] [stdout] 312 | fn plot(a: Box<Plottable>) -> Canvas {
[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: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 312 | fn plot(a: Box<dyn Plottable>) -> Canvas {
[INFO] [stdout]     |                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:49:90
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn get_max_coord_from_coords<'a, I: Iterator<Item=&'a Coords>>(coords: I, pluck_fn: &Fn(&Coords) -> u32) -> u32 {
[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: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn get_max_coord_from_coords<'a, I: Iterator<Item=&'a Coords>>(coords: I, pluck_fn: &dyn Fn(&Coords) -> u32) -> u32 {
[INFO] [stdout]    |                                                                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:312:16
[INFO] [stdout]     |
[INFO] [stdout] 312 | fn plot(a: Box<Plottable>) -> Canvas {
[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: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 312 | fn plot(a: Box<dyn Plottable>) -> Canvas {
[INFO] [stdout]     |                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:49:90
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn get_max_coord_from_coords<'a, I: Iterator<Item=&'a Coords>>(coords: I, pluck_fn: &Fn(&Coords) -> u32) -> u32 {
[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: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn get_max_coord_from_coords<'a, I: Iterator<Item=&'a Coords>>(coords: I, pluck_fn: &dyn Fn(&Coords) -> u32) -> u32 {
[INFO] [stdout]    |                                                                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:300:40
[INFO] [stdout]     |
[INFO] [stdout] 300 |     let mut contained_objects: Vec<Box<Plottable>> = vec![];
[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: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 300 |     let mut contained_objects: Vec<Box<dyn Plottable>> = vec![];
[INFO] [stdout]     |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:300:40
[INFO] [stdout]     |
[INFO] [stdout] 300 |     let mut contained_objects: Vec<Box<Plottable>> = vec![];
[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: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 300 |     let mut contained_objects: Vec<Box<dyn Plottable>> = vec![];
[INFO] [stdout]     |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Representation` is never used
[INFO] [stdout]  --> src/main.rs:9:6
[INFO] [stdout]   |
[INFO] [stdout] 9 | enum Representation {
[INFO] [stdout]   |      ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Coords` is never constructed
[INFO] [stdout]   --> src/main.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct Coords(u32, u32);
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_dimensions` is never used
[INFO] [stdout]   --> src/main.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl Coords {
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] 22 |     fn from_dimensions(dimensions: Dimensions) -> Vec<Coords> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PlottedCoords` is never constructed
[INFO] [stdout]   --> src/main.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | struct PlottedCoords(u32, u32, Representation);
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Dimensions` is never constructed
[INFO] [stdout]   --> src/main.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | struct Dimensions(u32, u32);
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `from_coords` and `get_max_coord_from_coords` are never used
[INFO] [stdout]   --> src/main.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 40 | impl Dimensions {
[INFO] [stdout]    | --------------- associated functions in this implementation
[INFO] [stdout] 41 |     fn from_coords(coords: &Vec<Coords>) -> Dimensions {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |     fn get_max_coord_from_coords<'a, I: Iterator<Item=&'a Coords>>(coords: I, pluck_fn: &Fn(&Coords) -> u32) -> u32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Plottable` is never used
[INFO] [stdout]   --> src/main.rs:56:7
[INFO] [stdout]    |
[INFO] [stdout] 56 | trait Plottable {
[INFO] [stdout]    |       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CombinedObject` is never constructed
[INFO] [stdout]   --> src/main.rs:66:8
[INFO] [stdout]    |
[INFO] [stdout] 66 | struct CombinedObject(Dimensions, Vec<Box<Plottable>>);
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Line` is never constructed
[INFO] [stdout]    --> src/main.rs:101:8
[INFO] [stdout]     |
[INFO] [stdout] 101 | struct Line(Dimensions, Vec<Coords>);
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `get_line_representation`, `rotate`, and `new` are never used
[INFO] [stdout]    --> src/main.rs:105:8
[INFO] [stdout]     |
[INFO] [stdout] 103 | impl Line {
[INFO] [stdout]     | --------- associated functions in this implementation
[INFO] [stdout] 104 |     // @TODO make private
[INFO] [stdout] 105 |     fn get_line_representation(start: Coords, end: Coords) -> Representation {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 120 |     fn rotate(line: Line, rotation_center: Coords) -> Line {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 174 |     fn new(start: Coords, end: Coords) -> Line {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Circle` is never constructed
[INFO] [stdout]    --> src/main.rs:244:8
[INFO] [stdout]     |
[INFO] [stdout] 244 | struct Circle(Dimensions, Vec<Coords>);
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/main.rs:247:8
[INFO] [stdout]     |
[INFO] [stdout] 246 | impl Circle {
[INFO] [stdout]     | ----------- associated function in this implementation
[INFO] [stdout] 247 |     fn new(point: Coords, radius: u32) -> Circle {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Canvas` is never constructed
[INFO] [stdout]    --> src/main.rs:296:8
[INFO] [stdout]     |
[INFO] [stdout] 296 | struct Canvas(Dimensions, Vec<PlottedCoords>);
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `combine` is never used
[INFO] [stdout]    --> src/main.rs:299:4
[INFO] [stdout]     |
[INFO] [stdout] 299 | fn combine<T: Plottable + 'static, U: Plottable + 'static>(a: Box<T>, b: Box<U>) -> CombinedObject {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `plot` is never used
[INFO] [stdout]    --> src/main.rs:312:4
[INFO] [stdout]     |
[INFO] [stdout] 312 | fn plot(a: Box<Plottable>) -> Canvas {
[INFO] [stdout]     |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `draw` is never used
[INFO] [stdout]    --> src/main.rs:327:4
[INFO] [stdout]     |
[INFO] [stdout] 327 | fn draw(canvas: Canvas) {
[INFO] [stdout]     |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fixtures_diagonal_line_ltr` is never used
[INFO] [stdout]    --> src/main.rs:345:4
[INFO] [stdout]     |
[INFO] [stdout] 345 | fn fixtures_diagonal_line_ltr() -> Line {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fixtures_horizontal_line` is never used
[INFO] [stdout]    --> src/main.rs:349:4
[INFO] [stdout]     |
[INFO] [stdout] 349 | fn fixtures_horizontal_line() -> Line {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fixtures_vertical_line` is never used
[INFO] [stdout]    --> src/main.rs:353:4
[INFO] [stdout]     |
[INFO] [stdout] 353 | fn fixtures_vertical_line() -> Line {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fixtures_circle` is never used
[INFO] [stdout]    --> src/main.rs:357:4
[INFO] [stdout]     |
[INFO] [stdout] 357 | fn fixtures_circle() -> Circle {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 25 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `draw` is never used
[INFO] [stdout]    --> src/main.rs:327:4
[INFO] [stdout]     |
[INFO] [stdout] 327 | fn draw(canvas: Canvas) {
[INFO] [stdout]     |    ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] running `Command { std: "docker" "inspect" "5e322c8fba44079efcf45db07a34066225ccad0ca48fc5af578dd706355d313c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e322c8fba44079efcf45db07a34066225ccad0ca48fc5af578dd706355d313c", kill_on_drop: false }`
[INFO] [stdout] 5e322c8fba44079efcf45db07a34066225ccad0ca48fc5af578dd706355d313c
[INFO] checking maxbeutel/rust-ascii-art against try#f9935d29d867449445ee008640ccca1bf1ae0889+rustflags=-Dtail_expr_drop_order for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaxbeutel%2Frust-ascii-art" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/maxbeutel/rust-ascii-art on toolchain f9935d29d867449445ee008640ccca1bf1ae0889
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f9935d29d867449445ee008640ccca1bf1ae0889" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/maxbeutel/rust-ascii-art
[INFO] finished tweaking git repo https://github.com/maxbeutel/rust-ascii-art
[INFO] tweaked toml for git repo https://github.com/maxbeutel/rust-ascii-art written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/maxbeutel/rust-ascii-art 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" "+f9935d29d867449445ee008640ccca1bf1ae0889" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+f9935d29d867449445ee008640ccca1bf1ae0889" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c16ed0e547c3a1701a75a0e8f4736f8d460c54257d69d46b1353456783260fb4
[INFO] running `Command { std: "docker" "start" "-a" "c16ed0e547c3a1701a75a0e8f4736f8d460c54257d69d46b1353456783260fb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c16ed0e547c3a1701a75a0e8f4736f8d460c54257d69d46b1353456783260fb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c16ed0e547c3a1701a75a0e8f4736f8d460c54257d69d46b1353456783260fb4", kill_on_drop: false }`
[INFO] [stdout] c16ed0e547c3a1701a75a0e8f4736f8d460c54257d69d46b1353456783260fb4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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 -Dtail_expr_drop_order" "-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+f9935d29d867449445ee008640ccca1bf1ae0889" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cafa9fd0bf032d518bbb71f5e639043e881a2f00fa62a8451818f6b5fcb0f0e5
[INFO] running `Command { std: "docker" "start" "-a" "cafa9fd0bf032d518bbb71f5e639043e881a2f00fa62a8451818f6b5fcb0f0e5", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]     Checking ascii-art v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/main.rs:26:10
[INFO] [stdout]    |
[INFO] [stdout] 26 |         };
[INFO] [stdout]    |          ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:66:43
[INFO] [stdout]    |
[INFO] [stdout] 66 | struct CombinedObject(Dimensions, Vec<Box<Plottable>>);
[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]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 66 | struct CombinedObject(Dimensions, Vec<Box<dyn Plottable>>);
[INFO] [stdout]    |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/main.rs:26:10
[INFO] [stdout]    |
[INFO] [stdout] 26 |         };
[INFO] [stdout]    |          ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:66:43
[INFO] [stdout]    |
[INFO] [stdout] 66 | struct CombinedObject(Dimensions, Vec<Box<Plottable>>);
[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]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 66 | struct CombinedObject(Dimensions, Vec<Box<dyn Plottable>>);
[INFO] [stdout]    |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:312:16
[INFO] [stdout]     |
[INFO] [stdout] 312 | fn plot(a: Box<Plottable>) -> Canvas {
[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: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 312 | fn plot(a: Box<dyn Plottable>) -> Canvas {
[INFO] [stdout]     |                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:49:90
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn get_max_coord_from_coords<'a, I: Iterator<Item=&'a Coords>>(coords: I, pluck_fn: &Fn(&Coords) -> u32) -> u32 {
[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: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn get_max_coord_from_coords<'a, I: Iterator<Item=&'a Coords>>(coords: I, pluck_fn: &dyn Fn(&Coords) -> u32) -> u32 {
[INFO] [stdout]    |                                                                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:312:16
[INFO] [stdout]     |
[INFO] [stdout] 312 | fn plot(a: Box<Plottable>) -> Canvas {
[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: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 312 | fn plot(a: Box<dyn Plottable>) -> Canvas {
[INFO] [stdout]     |                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:300:40
[INFO] [stdout]     |
[INFO] [stdout] 300 |     let mut contained_objects: Vec<Box<Plottable>> = vec![];
[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: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 300 |     let mut contained_objects: Vec<Box<dyn Plottable>> = vec![];
[INFO] [stdout]     |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:49:90
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn get_max_coord_from_coords<'a, I: Iterator<Item=&'a Coords>>(coords: I, pluck_fn: &Fn(&Coords) -> u32) -> u32 {
[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: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn get_max_coord_from_coords<'a, I: Iterator<Item=&'a Coords>>(coords: I, pluck_fn: &dyn Fn(&Coords) -> u32) -> u32 {
[INFO] [stdout]    |                                                                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Representation` is never used
[INFO] [stdout]  --> src/main.rs:9:6
[INFO] [stdout]   |
[INFO] [stdout] 9 | enum Representation {
[INFO] [stdout]   |      ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Coords` is never constructed
[INFO] [stdout]   --> src/main.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct Coords(u32, u32);
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_dimensions` is never used
[INFO] [stdout]   --> src/main.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl Coords {
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] 22 |     fn from_dimensions(dimensions: Dimensions) -> Vec<Coords> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PlottedCoords` is never constructed
[INFO] [stdout]   --> src/main.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | struct PlottedCoords(u32, u32, Representation);
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Dimensions` is never constructed
[INFO] [stdout]   --> src/main.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | struct Dimensions(u32, u32);
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `from_coords` and `get_max_coord_from_coords` are never used
[INFO] [stdout]   --> src/main.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 40 | impl Dimensions {
[INFO] [stdout]    | --------------- associated functions in this implementation
[INFO] [stdout] 41 |     fn from_coords(coords: &Vec<Coords>) -> Dimensions {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |     fn get_max_coord_from_coords<'a, I: Iterator<Item=&'a Coords>>(coords: I, pluck_fn: &Fn(&Coords) -> u32) -> u32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Plottable` is never used
[INFO] [stdout]   --> src/main.rs:56:7
[INFO] [stdout]    |
[INFO] [stdout] 56 | trait Plottable {
[INFO] [stdout]    |       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CombinedObject` is never constructed
[INFO] [stdout]   --> src/main.rs:66:8
[INFO] [stdout]    |
[INFO] [stdout] 66 | struct CombinedObject(Dimensions, Vec<Box<Plottable>>);
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Line` is never constructed
[INFO] [stdout]    --> src/main.rs:101:8
[INFO] [stdout]     |
[INFO] [stdout] 101 | struct Line(Dimensions, Vec<Coords>);
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `get_line_representation`, `rotate`, and `new` are never used
[INFO] [stdout]    --> src/main.rs:105:8
[INFO] [stdout]     |
[INFO] [stdout] 103 | impl Line {
[INFO] [stdout]     | --------- associated functions in this implementation
[INFO] [stdout] 104 |     // @TODO make private
[INFO] [stdout] 105 |     fn get_line_representation(start: Coords, end: Coords) -> Representation {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 120 |     fn rotate(line: Line, rotation_center: Coords) -> Line {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 174 |     fn new(start: Coords, end: Coords) -> Line {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Circle` is never constructed
[INFO] [stdout]    --> src/main.rs:244:8
[INFO] [stdout]     |
[INFO] [stdout] 244 | struct Circle(Dimensions, Vec<Coords>);
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/main.rs:247:8
[INFO] [stdout]     |
[INFO] [stdout] 246 | impl Circle {
[INFO] [stdout]     | ----------- associated function in this implementation
[INFO] [stdout] 247 |     fn new(point: Coords, radius: u32) -> Circle {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Canvas` is never constructed
[INFO] [stdout]    --> src/main.rs:296:8
[INFO] [stdout]     |
[INFO] [stdout] 296 | struct Canvas(Dimensions, Vec<PlottedCoords>);
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `combine` is never used
[INFO] [stdout]    --> src/main.rs:299:4
[INFO] [stdout]     |
[INFO] [stdout] 299 | fn combine<T: Plottable + 'static, U: Plottable + 'static>(a: Box<T>, b: Box<U>) -> CombinedObject {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `plot` is never used
[INFO] [stdout]    --> src/main.rs:312:4
[INFO] [stdout]     |
[INFO] [stdout] 312 | fn plot(a: Box<Plottable>) -> Canvas {
[INFO] [stdout]     |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `draw` is never used
[INFO] [stdout]    --> src/main.rs:327:4
[INFO] [stdout]     |
[INFO] [stdout] 327 | fn draw(canvas: Canvas) {
[INFO] [stdout]     |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fixtures_diagonal_line_ltr` is never used
[INFO] [stdout]    --> src/main.rs:345:4
[INFO] [stdout]     |
[INFO] [stdout] 345 | fn fixtures_diagonal_line_ltr() -> Line {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fixtures_horizontal_line` is never used
[INFO] [stdout]    --> src/main.rs:349:4
[INFO] [stdout]     |
[INFO] [stdout] 349 | fn fixtures_horizontal_line() -> Line {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fixtures_vertical_line` is never used
[INFO] [stdout]    --> src/main.rs:353:4
[INFO] [stdout]     |
[INFO] [stdout] 353 | fn fixtures_vertical_line() -> Line {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fixtures_circle` is never used
[INFO] [stdout]    --> src/main.rs:357:4
[INFO] [stdout]     |
[INFO] [stdout] 357 | fn fixtures_circle() -> Circle {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]   --> src/main.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn get_max_coord_from_coords<'a, I: Iterator<Item=&'a Coords>>(coords: I, pluck_fn: &Fn(&Coords) -> u32) -> u32 {
[INFO] [stdout]    |                                                                    --------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 50 |         coords.map(pluck_fn).max().unwrap()
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout]    = note: requested on the command line with `-D tail-expr-drop-order`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:300:40
[INFO] [stdout]     |
[INFO] [stdout] 300 |     let mut contained_objects: Vec<Box<Plottable>> = vec![];
[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: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 300 |     let mut contained_objects: Vec<Box<dyn Plottable>> = vec![];
[INFO] [stdout]     |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error; 25 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ascii-art` (bin "ascii-art") due to 2 previous errors; 25 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: function `draw` is never used
[INFO] [stdout]    --> src/main.rs:327:4
[INFO] [stdout]     |
[INFO] [stdout] 327 | fn draw(canvas: Canvas) {
[INFO] [stdout]     |    ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]   --> src/main.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn get_max_coord_from_coords<'a, I: Iterator<Item=&'a Coords>>(coords: I, pluck_fn: &Fn(&Coords) -> u32) -> u32 {
[INFO] [stdout]    |                                                                    --------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 50 |         coords.map(pluck_fn).max().unwrap()
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout]    = note: requested on the command line with `-D tail-expr-drop-order`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error; 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ascii-art` (bin "ascii-art" test) due to 2 previous errors; 6 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "cafa9fd0bf032d518bbb71f5e639043e881a2f00fa62a8451818f6b5fcb0f0e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cafa9fd0bf032d518bbb71f5e639043e881a2f00fa62a8451818f6b5fcb0f0e5", kill_on_drop: false }`
[INFO] [stdout] cafa9fd0bf032d518bbb71f5e639043e881a2f00fa62a8451818f6b5fcb0f0e5