[INFO] fetching crate image_splitting 0.1.0...
[INFO] testing image_splitting-0.1.0 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate image_splitting 0.1.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate image_splitting 0.1.0
[INFO] finished tweaking crates.io crate image_splitting 0.1.0
[INFO] tweaked toml for crates.io crate image_splitting 0.1.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate image_splitting 0.1.0 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate image_splitting 0.1.0 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" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cec65f1302edb4c0574b6837827b05cd8ee8182260c7fb2cdfaa6c56851333da
[INFO] running `Command { std: "docker" "start" "-a" "cec65f1302edb4c0574b6837827b05cd8ee8182260c7fb2cdfaa6c56851333da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cec65f1302edb4c0574b6837827b05cd8ee8182260c7fb2cdfaa6c56851333da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cec65f1302edb4c0574b6837827b05cd8ee8182260c7fb2cdfaa6c56851333da", kill_on_drop: false }`
[INFO] [stdout] cec65f1302edb4c0574b6837827b05cd8ee8182260c7fb2cdfaa6c56851333da
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d3589b8bb18fec6e020d33e5d0c27341a9cf112b411e0e86aa1eb4d02d64e8ef
[INFO] running `Command { std: "docker" "start" "-a" "d3589b8bb18fec6e020d33e5d0c27341a9cf112b411e0e86aa1eb4d02d64e8ef", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.94
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling simd-adler32 v0.3.7
[INFO] [stderr]    Compiling anyhow v1.0.97
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling adler2 v2.0.0
[INFO] [stderr]    Compiling built v0.7.7
[INFO] [stderr]    Compiling aligned-vec v0.5.0
[INFO] [stderr]    Compiling libc v0.2.171
[INFO] [stderr]    Compiling miniz_oxide v0.8.5
[INFO] [stderr]    Compiling arrayvec v0.7.6
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling rav1e v0.7.1
[INFO] [stderr]    Compiling crc32fast v1.4.2
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling log v0.4.27
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling flate2 v1.1.1
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]    Compiling crossbeam-deque v0.8.6
[INFO] [stderr]    Compiling simd_helpers v0.1.0
[INFO] [stderr]    Compiling rayon-core v1.12.1
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling v_frame v0.3.8
[INFO] [stderr]    Compiling itertools v0.12.1
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.6
[INFO] [stderr]    Compiling imgref v1.11.0
[INFO] [stderr]    Compiling num-bigint v0.4.6
[INFO] [stderr]    Compiling weezl v0.1.8
[INFO] [stderr]    Compiling quick-error v2.0.1
[INFO] [stderr]    Compiling noop_proc_macro v0.3.0
[INFO] [stderr]    Compiling rayon v1.10.0
[INFO] [stderr]    Compiling bitstream-io v2.6.0
[INFO] [stderr]    Compiling loop9 v0.1.5
[INFO] [stderr]    Compiling avif-serialize v0.8.3
[INFO] [stderr]    Compiling zune-inflate v0.2.54
[INFO] [stderr]    Compiling fdeflate v0.3.7
[INFO] [stderr]    Compiling half v2.5.0
[INFO] [stderr]    Compiling lebe v0.5.2
[INFO] [stderr]    Compiling color_quant v1.1.0
[INFO] [stderr]    Compiling smallvec v1.14.0
[INFO] [stderr]    Compiling byteorder-lite v0.1.0
[INFO] [stderr]    Compiling jpeg-decoder v0.3.1
[INFO] [stderr]    Compiling num-rational v0.4.2
[INFO] [stderr]    Compiling bytemuck v1.22.0
[INFO] [stderr]    Compiling zune-core v0.4.12
[INFO] [stderr]    Compiling rgb v0.8.50
[INFO] [stderr]    Compiling bit_field v0.10.2
[INFO] [stderr]    Compiling zune-jpeg v0.4.14
[INFO] [stderr]    Compiling qoi v0.4.1
[INFO] [stderr]    Compiling exr v1.73.0
[INFO] [stderr]    Compiling av1-grain v0.2.3
[INFO] [stderr]    Compiling tiff v0.9.1
[INFO] [stderr]    Compiling image-webp v0.2.1
[INFO] [stderr]    Compiling png v0.17.16
[INFO] [stderr]    Compiling gif v0.13.1
[INFO] [stderr]    Compiling maybe-rayon v0.1.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling profiling-procmacros v1.0.16
[INFO] [stderr]    Compiling num-derive v0.4.2
[INFO] [stderr]    Compiling arg_enum_proc_macro v0.3.4
[INFO] [stderr]    Compiling profiling v1.0.16
[INFO] [stderr]    Compiling ravif v0.11.11
[INFO] [stderr]    Compiling image v0.25.6
[INFO] [stderr]    Compiling image_splitting v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 09s
[INFO] running `Command { std: "docker" "inspect" "d3589b8bb18fec6e020d33e5d0c27341a9cf112b411e0e86aa1eb4d02d64e8ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3589b8bb18fec6e020d33e5d0c27341a9cf112b411e0e86aa1eb4d02d64e8ef", kill_on_drop: false }`
[INFO] [stdout] d3589b8bb18fec6e020d33e5d0c27341a9cf112b411e0e86aa1eb4d02d64e8ef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 36e249c96fffa247a6df1a0ee177aa5f602a93f701a0b5f030c8d79b3be4a72e
[INFO] running `Command { std: "docker" "start" "-a" "36e249c96fffa247a6df1a0ee177aa5f602a93f701a0b5f030c8d79b3be4a72e", kill_on_drop: false }`
[INFO] [stderr]    Compiling image_splitting v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.44s
[INFO] running `Command { std: "docker" "inspect" "36e249c96fffa247a6df1a0ee177aa5f602a93f701a0b5f030c8d79b3be4a72e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36e249c96fffa247a6df1a0ee177aa5f602a93f701a0b5f030c8d79b3be4a72e", kill_on_drop: false }`
[INFO] [stdout] 36e249c96fffa247a6df1a0ee177aa5f602a93f701a0b5f030c8d79b3be4a72e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 66db5d6c805d49045e85d2e86304c57324aad6207b4ccf8cfa8b99080301dff9
[INFO] running `Command { std: "docker" "start" "-a" "66db5d6c805d49045e85d2e86304c57324aad6207b4ccf8cfa8b99080301dff9", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/image_splitting-7b73ac8e4c189981)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::test_split_image ... ok
[INFO] [stdout] test tests::test_split_image_with_size ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.20s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests image_splitting
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - split_image_with_size (line 74) ... FAILED
[INFO] [stdout] test src/lib.rs - split_image (line 21) ... FAILED
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - split_image_with_size (line 74) stdout ----
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]  --> src/lib.rs:78:70
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_74_0() {
[INFO] [stdout]   |                                      ---------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 7 | let sub_images = split_image_with_size("path/to/image.png", 100, 100)?;
[INFO] [stdout]   |                                                                      ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]   |
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]   |
[INFO] [stdout] 4 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_74_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 5 | use image_splitting::split_image_with_size;
[INFO] [stdout] 6 |  
[INFO] [stdout] 7 | let sub_images = split_image_with_size("path/to/image.png", 100, 100)?;
[INFO] [stdout] 8 +     Ok(())
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - split_image (line 21) stdout ----
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]  --> src/lib.rs:25:50
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_21_0() {
[INFO] [stdout]   |                                      ---------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 7 | let sub_images = split_image("path/to/image.png")?;
[INFO] [stdout]   |                                                  ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]   |
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]   |
[INFO] [stdout] 4 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_21_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 5 | use image_splitting::split_image;
[INFO] [stdout] ...
[INFO] [stdout] 8 | assert_eq!(sub_images.len(), 9);
[INFO] [stdout] 9 +     Ok(())
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - split_image (line 21)
[INFO] [stdout]     src/lib.rs - split_image_with_size (line 74)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.13s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "66db5d6c805d49045e85d2e86304c57324aad6207b4ccf8cfa8b99080301dff9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66db5d6c805d49045e85d2e86304c57324aad6207b4ccf8cfa8b99080301dff9", kill_on_drop: false }`
[INFO] [stdout] 66db5d6c805d49045e85d2e86304c57324aad6207b4ccf8cfa8b99080301dff9