[INFO] cloning repository https://github.com/genya0407/png_print [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/genya0407/png_print" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgenya0407%2Fpng_print", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgenya0407%2Fpng_print'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] a562b235595f3f61f2ce56057035952802e3e097 [INFO] testing genya0407/png_print against 1.60.0 for beta-1.61-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgenya0407%2Fpng_print" "/workspace/builds/worker-47/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-47/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/genya0407/png_print on toolchain 1.60.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/genya0407/png_print [INFO] finished tweaking git repo https://github.com/genya0407/png_print [INFO] tweaked toml for git repo https://github.com/genya0407/png_print written to /workspace/builds/worker-47/source/Cargo.toml [INFO] crate git repo https://github.com/genya0407/png_print already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "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-47/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/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" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 0ea0a45f6efbdf4ba0032cace99c70026659930bd1286da811ab25f0693906f4 [INFO] running `Command { std: "docker" "start" "-a" "0ea0a45f6efbdf4ba0032cace99c70026659930bd1286da811ab25f0693906f4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "0ea0a45f6efbdf4ba0032cace99c70026659930bd1286da811ab25f0693906f4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0ea0a45f6efbdf4ba0032cace99c70026659930bd1286da811ab25f0693906f4", kill_on_drop: false }` [INFO] [stdout] 0ea0a45f6efbdf4ba0032cace99c70026659930bd1286da811ab25f0693906f4 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/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" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] cd28cdcd8401f49675ce30d10b3e7f62c8be71f6b9aa2580a1c21f25853d967a [INFO] running `Command { std: "docker" "start" "-a" "cd28cdcd8401f49675ce30d10b3e7f62c8be71f6b9aa2580a1c21f25853d967a", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling adler32 v1.0.2 [INFO] [stderr] Compiling byteorder v1.1.0 [INFO] [stderr] Compiling ansi_term v0.10.2 [INFO] [stderr] Compiling inflate v0.3.3 [INFO] [stderr] Compiling png_encoder v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/main.rs:27:63 [INFO] [stdout] | [INFO] [stdout] 27 | fn parse_to_png(chunks: Vec) -> Result> { [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 [INFO] [stdout] help: use `dyn` [INFO] [stdout] | [INFO] [stdout] 27 - fn parse_to_png(chunks: Vec) -> Result> { [INFO] [stdout] 27 + fn parse_to_png(chunks: Vec) -> Result> { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/main.rs:63:69 [INFO] [stdout] | [INFO] [stdout] 63 | fn parse_to_chunks(bytes: Vec) -> Result, 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: use `dyn` [INFO] [stdout] | [INFO] [stdout] 63 - fn parse_to_chunks(bytes: Vec) -> Result, Box> { [INFO] [stdout] 63 + fn parse_to_chunks(bytes: Vec) -> Result, Box> { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/main.rs:94:52 [INFO] [stdout] | [INFO] [stdout] 94 | fn readfile(filename: &str) -> Result, 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: use `dyn` [INFO] [stdout] | [INFO] [stdout] 94 - fn readfile(filename: &str) -> Result, Box> { [INFO] [stdout] 94 + fn readfile(filename: &str) -> Result, Box> { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/model.rs:25:32 [INFO] [stdout] | [INFO] [stdout] 25 | fn cause(&self) -> Option<&error::Error> { [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: use `dyn` [INFO] [stdout] | [INFO] [stdout] 25 - fn cause(&self) -> Option<&error::Error> { [INFO] [stdout] 25 + fn cause(&self) -> Option<&dyn error::Error> { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `scanline` [INFO] [stdout] --> src/model.rs:98:25 [INFO] [stdout] | [INFO] [stdout] 98 | let scanline: Vec = match filter_method { [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_scanline` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/model.rs:46:17 [INFO] [stdout] | [INFO] [stdout] 46 | let mut scanline = reversed_pixels[scanline_start..next_scanline_start].to_vec(); [INFO] [stdout] | ----^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `width` [INFO] [stdout] --> src/model.rs:66:12 [INFO] [stdout] | [INFO] [stdout] 66 | pub fn width(&self) -> usize { [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `compression_method` [INFO] [stdout] --> src/model.rs:222:5 [INFO] [stdout] | [INFO] [stdout] 222 | compression_method: u8, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `additional_flags` [INFO] [stdout] --> src/model.rs:223:5 [INFO] [stdout] | [INFO] [stdout] 223 | additional_flags: u8, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `check_value` [INFO] [stdout] --> src/model.rs:225:5 [INFO] [stdout] | [INFO] [stdout] 225 | check_value: u32, [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 10 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1m 04s [INFO] running `Command { std: "docker" "inspect" "cd28cdcd8401f49675ce30d10b3e7f62c8be71f6b9aa2580a1c21f25853d967a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "cd28cdcd8401f49675ce30d10b3e7f62c8be71f6b9aa2580a1c21f25853d967a", kill_on_drop: false }` [INFO] [stdout] cd28cdcd8401f49675ce30d10b3e7f62c8be71f6b9aa2580a1c21f25853d967a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/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" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] f36ee902fd36ccb9b27e74274f68ff3c27861b59365f3eb4d5ac50e5a3ab93e0 [INFO] running `Command { std: "docker" "start" "-a" "f36ee902fd36ccb9b27e74274f68ff3c27861b59365f3eb4d5ac50e5a3ab93e0", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling png_encoder v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/main.rs:27:63 [INFO] [stdout] | [INFO] [stdout] 27 | fn parse_to_png(chunks: Vec) -> Result> { [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 [INFO] [stdout] help: use `dyn` [INFO] [stdout] | [INFO] [stdout] 27 - fn parse_to_png(chunks: Vec) -> Result> { [INFO] [stdout] 27 + fn parse_to_png(chunks: Vec) -> Result> { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/main.rs:63:69 [INFO] [stdout] | [INFO] [stdout] 63 | fn parse_to_chunks(bytes: Vec) -> Result, 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: use `dyn` [INFO] [stdout] | [INFO] [stdout] 63 - fn parse_to_chunks(bytes: Vec) -> Result, Box> { [INFO] [stdout] 63 + fn parse_to_chunks(bytes: Vec) -> Result, Box> { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/main.rs:94:52 [INFO] [stdout] | [INFO] [stdout] 94 | fn readfile(filename: &str) -> Result, 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: use `dyn` [INFO] [stdout] | [INFO] [stdout] 94 - fn readfile(filename: &str) -> Result, Box> { [INFO] [stdout] 94 + fn readfile(filename: &str) -> Result, Box> { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/model.rs:25:32 [INFO] [stdout] | [INFO] [stdout] 25 | fn cause(&self) -> Option<&error::Error> { [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: use `dyn` [INFO] [stdout] | [INFO] [stdout] 25 - fn cause(&self) -> Option<&error::Error> { [INFO] [stdout] 25 + fn cause(&self) -> Option<&dyn error::Error> { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `scanline` [INFO] [stdout] --> src/model.rs:98:25 [INFO] [stdout] | [INFO] [stdout] 98 | let scanline: Vec = match filter_method { [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_scanline` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/model.rs:46:17 [INFO] [stdout] | [INFO] [stdout] 46 | let mut scanline = reversed_pixels[scanline_start..next_scanline_start].to_vec(); [INFO] [stdout] | ----^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `width` [INFO] [stdout] --> src/model.rs:66:12 [INFO] [stdout] | [INFO] [stdout] 66 | pub fn width(&self) -> usize { [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `compression_method` [INFO] [stdout] --> src/model.rs:222:5 [INFO] [stdout] | [INFO] [stdout] 222 | compression_method: u8, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `additional_flags` [INFO] [stdout] --> src/model.rs:223:5 [INFO] [stdout] | [INFO] [stdout] 223 | additional_flags: u8, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `check_value` [INFO] [stdout] --> src/model.rs:225:5 [INFO] [stdout] | [INFO] [stdout] 225 | check_value: u32, [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 10 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 1.04s [INFO] running `Command { std: "docker" "inspect" "f36ee902fd36ccb9b27e74274f68ff3c27861b59365f3eb4d5ac50e5a3ab93e0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f36ee902fd36ccb9b27e74274f68ff3c27861b59365f3eb4d5ac50e5a3ab93e0", kill_on_drop: false }` [INFO] [stdout] f36ee902fd36ccb9b27e74274f68ff3c27861b59365f3eb4d5ac50e5a3ab93e0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/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" "+1.60.0" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 5c51cb07555525ad935192d4628294dee6904111c615d261dc89d22c09448a9f [INFO] running `Command { std: "docker" "start" "-a" "5c51cb07555525ad935192d4628294dee6904111c615d261dc89d22c09448a9f", 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/main.rs:27:63 [INFO] [stderr] | [INFO] [stderr] 27 | fn parse_to_png(chunks: Vec) -> Result> { [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 [INFO] [stderr] help: use `dyn` [INFO] [stderr] | [INFO] [stderr] 27 - fn parse_to_png(chunks: Vec) -> Result> { [INFO] [stderr] 27 + fn parse_to_png(chunks: Vec) -> Result> { [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/main.rs:63:69 [INFO] [stderr] | [INFO] [stderr] 63 | fn parse_to_chunks(bytes: Vec) -> Result, Box> { [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 [INFO] [stderr] help: use `dyn` [INFO] [stderr] | [INFO] [stderr] 63 - fn parse_to_chunks(bytes: Vec) -> Result, Box> { [INFO] [stderr] 63 + fn parse_to_chunks(bytes: Vec) -> Result, Box> { [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/main.rs:94:52 [INFO] [stderr] | [INFO] [stderr] 94 | fn readfile(filename: &str) -> Result, Box> { [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 [INFO] [stderr] help: use `dyn` [INFO] [stderr] | [INFO] [stderr] 94 - fn readfile(filename: &str) -> Result, Box> { [INFO] [stderr] 94 + fn readfile(filename: &str) -> Result, Box> { [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/model.rs:25:32 [INFO] [stderr] | [INFO] [stderr] 25 | fn cause(&self) -> Option<&error::Error> { [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 [INFO] [stderr] help: use `dyn` [INFO] [stderr] | [INFO] [stderr] 25 - fn cause(&self) -> Option<&error::Error> { [INFO] [stderr] 25 + fn cause(&self) -> Option<&dyn error::Error> { [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: unused variable: `scanline` [INFO] [stderr] --> src/model.rs:98:25 [INFO] [stderr] | [INFO] [stderr] 98 | let scanline: Vec = match filter_method { [INFO] [stderr] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_scanline` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/model.rs:46:17 [INFO] [stderr] | [INFO] [stderr] 46 | let mut scanline = reversed_pixels[scanline_start..next_scanline_start].to_vec(); [INFO] [stderr] | ----^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `width` [INFO] [stderr] --> src/model.rs:66:12 [INFO] [stderr] | [INFO] [stderr] 66 | pub fn width(&self) -> usize { [INFO] [stderr] | ^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: field is never read: `compression_method` [INFO] [stderr] --> src/model.rs:222:5 [INFO] [stderr] | [INFO] [stderr] 222 | compression_method: u8, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never read: `additional_flags` [INFO] [stderr] --> src/model.rs:223:5 [INFO] [stderr] | [INFO] [stderr] 223 | additional_flags: u8, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never read: `check_value` [INFO] [stderr] --> src/model.rs:225:5 [INFO] [stderr] | [INFO] [stderr] 225 | check_value: u32, [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: `png_encoder` (bin "png_encoder" test) generated 10 warnings [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 1.87s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/png_encoder-8690ed98bd5fe488) [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" "5c51cb07555525ad935192d4628294dee6904111c615d261dc89d22c09448a9f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5c51cb07555525ad935192d4628294dee6904111c615d261dc89d22c09448a9f", kill_on_drop: false }` [INFO] [stdout] 5c51cb07555525ad935192d4628294dee6904111c615d261dc89d22c09448a9f