[INFO] fetching crate png2aa 0.1.2... [INFO] testing png2aa-0.1.2 against 1.49.0 for beta-1.50-1 [INFO] extracting crate png2aa 0.1.2 into /workspace/builds/worker-0/source [INFO] validating manifest of crates.io crate png2aa 0.1.2 on toolchain 1.49.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [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/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] d0fb02e75dde1dbda046cf3cc55f76fb1ab3dd7d35c58cf66375a51783cb2a11 [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" "d0fb02e75dde1dbda046cf3cc55f76fb1ab3dd7d35c58cf66375a51783cb2a11", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d0fb02e75dde1dbda046cf3cc55f76fb1ab3dd7d35c58cf66375a51783cb2a11", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d0fb02e75dde1dbda046cf3cc55f76fb1ab3dd7d35c58cf66375a51783cb2a11", kill_on_drop: false }` [INFO] [stdout] d0fb02e75dde1dbda046cf3cc55f76fb1ab3dd7d35c58cf66375a51783cb2a11 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", 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] 604b3b0f2f5bc325586b9957289861e87aada54d12ec8188d1e880533b369621 [INFO] running `Command { std: "docker" "start" "-a" "604b3b0f2f5bc325586b9957289861e87aada54d12ec8188d1e880533b369621", kill_on_drop: false }` [INFO] [stderr] Compiling const_fn v0.4.4 [INFO] [stderr] Compiling rayon-core v1.9.0 [INFO] [stderr] Compiling either v1.6.1 [INFO] [stderr] Compiling adler32 v1.2.0 [INFO] [stderr] Compiling matrixmultiply v0.1.15 [INFO] [stderr] Compiling rawpointer v0.1.0 [INFO] [stderr] Compiling ndarray v0.10.14 [INFO] [stderr] Compiling lzw v0.10.0 [INFO] [stderr] Compiling color_quant v1.1.0 [INFO] [stderr] Compiling scoped_threadpool v0.1.9 [INFO] [stderr] Compiling safemem v0.2.0 [INFO] [stderr] Compiling string-error v0.1.0 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling crossbeam-utils v0.8.1 [INFO] [stderr] Compiling memoffset v0.6.1 [INFO] [stderr] Compiling num-integer v0.1.44 [INFO] [stderr] Compiling rayon v1.5.0 [INFO] [stderr] Compiling num-iter v0.1.42 [INFO] [stderr] Compiling getopts v0.2.21 [INFO] [stderr] Compiling itertools v0.7.11 [INFO] [stderr] Compiling inflate v0.3.4 [INFO] [stderr] Compiling deflate v0.7.20 [INFO] [stderr] Compiling base64 v0.6.0 [INFO] [stderr] Compiling gif v0.9.2 [INFO] [stderr] Compiling crossbeam-channel v0.5.0 [INFO] [stderr] Compiling crossbeam-epoch v0.9.1 [INFO] [stderr] Compiling crossbeam-deque v0.8.0 [INFO] [stderr] Compiling num-traits v0.1.43 [INFO] [stderr] Compiling num-complex v0.1.43 [INFO] [stderr] Compiling enum_primitive v0.1.1 [INFO] [stderr] Compiling num-rational v0.1.42 [INFO] [stderr] Compiling png v0.11.0 [INFO] [stderr] Compiling jpeg-decoder v0.1.20 [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)]` 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] | ^^^^ help: use `dyn`: `dyn Read` [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/utils.rs:21:67 [INFO] [stdout] | [INFO] [stdout] 21 | pub fn read_png(image_file: Box) -> Result, Box> { [INFO] [stdout] | ^^^^^ help: use `dyn`: `dyn Error` [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] | ^^^^^ help: use `dyn`: `dyn Write` [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] | ^^^^^ help: use `dyn`: `dyn Error` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stdout] --> src/cli.rs:1:1 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(slice_patterns)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error [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` [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `Command { std: "docker" "inspect" "604b3b0f2f5bc325586b9957289861e87aada54d12ec8188d1e880533b369621", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "604b3b0f2f5bc325586b9957289861e87aada54d12ec8188d1e880533b369621", kill_on_drop: false }` [INFO] [stdout] 604b3b0f2f5bc325586b9957289861e87aada54d12ec8188d1e880533b369621