[INFO] fetching crate png2aa 0.1.2... [INFO] testing png2aa-0.1.2 against beta-2025-10-28 for beta-1.92-2 [INFO] extracting crate png2aa 0.1.2 into /workspace/builds/worker-0-tc2/source [INFO] started tweaking crates.io crate png2aa 0.1.2 [INFO] finished tweaking crates.io crate png2aa 0.1.2 [INFO] tweaked toml for crates.io crate png2aa 0.1.2 written to /workspace/builds/worker-0-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate png2aa 0.1.2 on toolchain beta-2025-10-28 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 35 packages to latest compatible versions [INFO] [stderr] Adding base64 v0.6.0 (available: v0.22.1) [INFO] [stderr] Adding image v0.18.0 (available: v0.25.8) [INFO] [stderr] Adding ndarray v0.10.14 (available: v0.17.1) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] d3ac9b386b7e263d44ade44c08a2bb0434c75ee6a27833c7419d63639d472240 [INFO] running `Command { std: "docker" "start" "-a" "d3ac9b386b7e263d44ade44c08a2bb0434c75ee6a27833c7419d63639d472240", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d3ac9b386b7e263d44ade44c08a2bb0434c75ee6a27833c7419d63639d472240", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d3ac9b386b7e263d44ade44c08a2bb0434c75ee6a27833c7419d63639d472240", kill_on_drop: false }` [INFO] [stdout] d3ac9b386b7e263d44ade44c08a2bb0434c75ee6a27833c7419d63639d472240 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] b0eb93129e62c4ab81568c426d01198d0fdde86a7c1c36f8c94a84603f1046cf [INFO] running `Command { std: "docker" "start" "-a" "b0eb93129e62c4ab81568c426d01198d0fdde86a7c1c36f8c94a84603f1046cf", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024 [INFO] [stderr] Compiling num-rational v0.1.43 [INFO] [stderr] Compiling num-complex v0.1.44 [INFO] [stderr] Compiling matrixmultiply v0.1.15 [INFO] [stderr] Compiling ndarray v0.10.14 [INFO] [stderr] Compiling rawpointer v0.1.0 [INFO] [stderr] Compiling inflate v0.3.4 [INFO] [stderr] Compiling deflate v0.7.20 [INFO] [stderr] Compiling itertools v0.7.11 [INFO] [stderr] Compiling gif v0.9.2 [INFO] [stderr] Compiling base64 v0.6.0 [INFO] [stderr] Compiling string-error v0.1.0 [INFO] [stderr] Compiling getopts v0.2.24 [INFO] [stderr] Compiling num-traits v0.1.43 [INFO] [stderr] Compiling jpeg-decoder v0.1.22 [INFO] [stderr] Compiling enum_primitive v0.1.1 [INFO] [stderr] Compiling png v0.11.0 [INFO] [stderr] Compiling image v0.18.0 [INFO] [stderr] Compiling png2aa v0.1.2 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused `#[macro_use]` import [INFO] [stdout] --> src/lib.rs:2:1 [INFO] [stdout] | [INFO] [stdout] 2 | #[macro_use] extern crate ndarray; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/utils.rs:21:33 [INFO] [stdout] | [INFO] [stdout] 21 | pub fn read_png(image_file: Box) -> 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] = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default [INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 21 | pub fn read_png(image_file: Box) -> Result, Box> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/utils.rs:21:67 [INFO] [stdout] | [INFO] [stdout] 21 | pub fn read_png(image_file: Box) -> 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: if this is a dyn-compatible trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 21 | pub fn read_png(image_file: Box) -> Result, Box> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/utils.rs:38:44 [INFO] [stdout] | [INFO] [stdout] 38 | pub fn write_grayscale_png(image_file: Box, img: &Array2) -> 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: if this is a dyn-compatible trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 38 | pub fn write_grayscale_png(image_file: Box, img: &Array2) -> Result<(), Box> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/utils.rs:38:89 [INFO] [stdout] | [INFO] [stdout] 38 | pub fn write_grayscale_png(image_file: Box, img: &Array2) -> 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: if this is a dyn-compatible trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 38 | pub fn write_grayscale_png(image_file: Box, img: &Array2) -> Result<(), Box> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel [INFO] [stdout] --> src/cli.rs:1:1 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(slice_patterns)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute [INFO] [stdout] | [INFO] [stdout] = help: the feature `slice_patterns` has been stable since `1.42.0` and no longer requires an attribute to enable [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `slice_patterns` has been stable since 1.42.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/cli.rs:1:12 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(slice_patterns)] [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(stable_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0554`. [INFO] [stdout] [INFO] [stderr] error: could not compile `png2aa` (bin "png2aa") due to 1 previous error; 1 warning emitted [INFO] running `Command { std: "docker" "inspect" "b0eb93129e62c4ab81568c426d01198d0fdde86a7c1c36f8c94a84603f1046cf", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b0eb93129e62c4ab81568c426d01198d0fdde86a7c1c36f8c94a84603f1046cf", kill_on_drop: false }` [INFO] [stdout] b0eb93129e62c4ab81568c426d01198d0fdde86a7c1c36f8c94a84603f1046cf