[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 try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaxbeutel%2Frust-ascii-art" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/maxbeutel/rust-ascii-art on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", 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-4/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: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a3dc48f1322cc21a39ac4caa01df86cf71bb0473cdacbd7f5fea91120ddc7571
[INFO] running `Command { std: "docker" "start" "-a" "a3dc48f1322cc21a39ac4caa01df86cf71bb0473cdacbd7f5fea91120ddc7571", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a3dc48f1322cc21a39ac4caa01df86cf71bb0473cdacbd7f5fea91120ddc7571", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3dc48f1322cc21a39ac4caa01df86cf71bb0473cdacbd7f5fea91120ddc7571", kill_on_drop: false }`
[INFO] [stdout] a3dc48f1322cc21a39ac4caa01df86cf71bb0473cdacbd7f5fea91120ddc7571
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6835effe322c18be7f890681b18ecb110c663ebcb7cbf7ee05a4af447e99836e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6835effe322c18be7f890681b18ecb110c663ebcb7cbf7ee05a4af447e99836e", kill_on_drop: false }`
[INFO] [stderr]     Checking ascii-art v0.1.0 (/opt/rustwide/workdir)
[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]    |                                                                                          ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Coords) -> u32`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` 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]    |                                           ^^^^^^^^^ help: use `dyn`: `dyn Plottable`
[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]     |                                        ^^^^^^^^^ help: use `dyn`: `dyn Plottable`
[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]     |                ^^^^^^^^^ help: use `dyn`: `dyn Plottable`
[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]    |                                                                                          ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Coords) -> u32`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` 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]    |                                           ^^^^^^^^^ help: use `dyn`: `dyn Plottable`
[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]     |                                        ^^^^^^^^^ help: use `dyn`: `dyn Plottable`
[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]     |                ^^^^^^^^^ help: use `dyn`: `dyn Plottable`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Canvas`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     Canvas,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_dimensions`
[INFO] [stdout]   --> src/main.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 |     fn from_dimensions(dimensions: Dimensions) -> Vec<Coords> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `coords_from_index`
[INFO] [stdout]   --> src/main.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 |         fn coords_from_index(i: u32, dimensions: Dimensions) -> Coords {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_coords`
[INFO] [stdout]   --> src/main.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn from_coords(coords: &Vec<Coords>) -> Dimensions {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_max_coord_from_coords`
[INFO] [stdout]   --> src/main.rs:49:8
[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: associated function is never used: `rotate`
[INFO] [stdout]    --> src/main.rs:120:8
[INFO] [stdout]     |
[INFO] [stdout] 120 |     fn rotate(line: Line, rotation_center: Coords) -> Line {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/main.rs:174:8
[INFO] [stdout]     |
[INFO] [stdout] 174 |     fn new(start: Coords, end: Coords) -> Line {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/main.rs:247:8
[INFO] [stdout]     |
[INFO] [stdout] 247 |     fn new(point: Coords, radius: u32) -> Circle {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `combine`
[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 is never used: `plot`
[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 is never used: `draw`
[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 is never used: `fixtures_diagonal_line_ltr`
[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 is never used: `fixtures_horizontal_line`
[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 is never used: `fixtures_vertical_line`
[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 is never used: `fixtures_circle`
[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: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `draw`
[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: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.92s
[INFO] running `Command { std: "docker" "inspect" "6835effe322c18be7f890681b18ecb110c663ebcb7cbf7ee05a4af447e99836e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6835effe322c18be7f890681b18ecb110c663ebcb7cbf7ee05a4af447e99836e", kill_on_drop: false }`
[INFO] [stdout] 6835effe322c18be7f890681b18ecb110c663ebcb7cbf7ee05a4af447e99836e