[INFO] fetching crate image_splitting 0.1.0...
[INFO] testing image_splitting-0.1.0 against master#2fd6efc32704647e64d3d646d21c4c68eae100e4 for pr-149852-1
[INFO] extracting crate image_splitting 0.1.0 into /workspace/builds/worker-6-tc1/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-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate image_splitting 0.1.0 on toolchain 2fd6efc32704647e64d3d646d21c4c68eae100e4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "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" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stderr]     Updating crates.io index
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6108742bd61c0d236969ff3708375afeb44206ba448f6c79c0219ded4c1df8a2
[INFO] running `Command { std: "docker" "start" "-a" "6108742bd61c0d236969ff3708375afeb44206ba448f6c79c0219ded4c1df8a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6108742bd61c0d236969ff3708375afeb44206ba448f6c79c0219ded4c1df8a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6108742bd61c0d236969ff3708375afeb44206ba448f6c79c0219ded4c1df8a2", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e68da2c9bc949340f27c06d54c13b62f48d1f409a3325d7c0348ab6397e68a58
[INFO] running `Command { std: "docker" "start" "-a" "e68da2c9bc949340f27c06d54c13b62f48d1f409a3325d7c0348ab6397e68a58", kill_on_drop: false }`
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[INFO] [stderr]    Compiling minimal-lexical v0.2.1
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[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 33.76s
[INFO] running `Command { std: "docker" "inspect" "e68da2c9bc949340f27c06d54c13b62f48d1f409a3325d7c0348ab6397e68a58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e68da2c9bc949340f27c06d54c13b62f48d1f409a3325d7c0348ab6397e68a58", kill_on_drop: false }`
[INFO] [stdout] e68da2c9bc949340f27c06d54c13b62f48d1f409a3325d7c0348ab6397e68a58
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9916ee3b095ac5f9ce14091f2a2a450eafde67656da58187a6ff3c0c80581c11
[INFO] running `Command { std: "docker" "start" "-a" "9916ee3b095ac5f9ce14091f2a2a450eafde67656da58187a6ff3c0c80581c11", 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 1.95s
[INFO] running `Command { std: "docker" "inspect" "9916ee3b095ac5f9ce14091f2a2a450eafde67656da58187a6ff3c0c80581c11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9916ee3b095ac5f9ce14091f2a2a450eafde67656da58187a6ff3c0c80581c11", kill_on_drop: false }`
[INFO] [stdout] 9916ee3b095ac5f9ce14091f2a2a450eafde67656da58187a6ff3c0c80581c11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 555f7697c0fbcaab2d436bd132716c38afa5a67f5334dcfd2467a038d3c34de2
[INFO] running `Command { std: "docker" "start" "-a" "555f7697c0fbcaab2d436bd132716c38afa5a67f5334dcfd2467a038d3c34de2", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/image_splitting-bc8aa31179b50cdc)
[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 0.98s
[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] [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] 75 | 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] 78 | 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] 75 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_74_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 76 | use image_splitting::split_image_with_size;
[INFO] [stdout] 77 |  
[INFO] [stdout] 78 | let sub_images = split_image_with_size("path/to/image.png", 100, 100)?;
[INFO] [stdout] 79 +     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] 22 | 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] 25 | 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] 22 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_21_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 23 | use image_splitting::split_image;
[INFO] [stdout] ...
[INFO] [stdout] 26 | assert_eq!(sub_images.len(), 9);
[INFO] [stdout] 27 +     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 0.17s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "555f7697c0fbcaab2d436bd132716c38afa5a67f5334dcfd2467a038d3c34de2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "555f7697c0fbcaab2d436bd132716c38afa5a67f5334dcfd2467a038d3c34de2", kill_on_drop: false }`
[INFO] [stdout] 555f7697c0fbcaab2d436bd132716c38afa5a67f5334dcfd2467a038d3c34de2
