[INFO] updating cached repository kstrohbeck/picross-solver [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/kstrohbeck/picross-solver [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/kstrohbeck/picross-solver" "work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/kstrohbeck/picross-solver"` [INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/kstrohbeck/picross-solver'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/kstrohbeck/picross-solver" "work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/kstrohbeck/picross-solver"` [INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/kstrohbeck/picross-solver'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 8f538c9a0565d817c8963e8ccebb15bdc8162841 [INFO] sha for GitHub repo kstrohbeck/picross-solver: 8f538c9a0565d817c8963e8ccebb15bdc8162841 [INFO] validating manifest of kstrohbeck/picross-solver on toolchain master#452087b4bf18cece2d52d7cd8c9147195e5404bf [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of kstrohbeck/picross-solver on toolchain try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing kstrohbeck/picross-solver [INFO] finished frobbing kstrohbeck/picross-solver [INFO] frobbed toml for kstrohbeck/picross-solver written to work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/kstrohbeck/picross-solver/Cargo.toml [INFO] started frobbing kstrohbeck/picross-solver [INFO] finished frobbing kstrohbeck/picross-solver [INFO] frobbed toml for kstrohbeck/picross-solver written to work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/kstrohbeck/picross-solver/Cargo.toml [INFO] crate kstrohbeck/picross-solver already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] checking kstrohbeck/picross-solver against master#452087b4bf18cece2d52d7cd8c9147195e5404bf for pr-63247 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63247/worker-7/master#452087b4bf18cece2d52d7cd8c9147195e5404bf:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/kstrohbeck/picross-solver:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] aa7fd3608982dbf10f98e2845deb1a9d3148a9660e12a889fec6536bace49a87 [INFO] running `"docker" "start" "-a" "aa7fd3608982dbf10f98e2845deb1a9d3148a9660e12a889fec6536bace49a87"` [INFO] [stderr] warning: the cargo feature `edition` is now stable and is no longer necessary to be listed in the manifest [INFO] [stderr] Compiling proc-macro2 v0.4.13 [INFO] [stderr] Checking streaming-iterator v0.1.4 [INFO] [stderr] Checking serde_json v1.0.26 [INFO] [stderr] Compiling quote v0.6.8 [INFO] [stderr] Compiling syn v0.14.9 [INFO] [stderr] Compiling serde_derive v1.0.75 [INFO] [stderr] Checking picross-solver v0.1.0 (/opt/crater/workdir) [INFO] [stderr] error[E0599]: no method named `step_as_child` found for type `&mut puzzle::Puzzle` in the current scope [INFO] [stderr] --> src/puzzle.rs:98:30 [INFO] [stderr] | [INFO] [stderr] 98 | while let res = self.step_as_child() { [INFO] [stderr] | ^^^^^^^^^^^^^ help: there is a method with a similar name: `solve_as_child` [INFO] [stderr] [INFO] [stderr] error[E0599]: no method named `step_as_child` found for type `&mut puzzle::Puzzle` in the current scope [INFO] [stderr] --> src/puzzle.rs:98:30 [INFO] [stderr] | [INFO] [stderr] 98 | while let res = self.step_as_child() { [INFO] [stderr] | ^^^^^^^^^^^^^ help: there is a method with a similar name: `solve_as_child` [INFO] [stderr] [INFO] [stderr] error[E0308]: mismatched types [INFO] [stderr] --> src/puzzle.rs:98:9 [INFO] [stderr] | [INFO] [stderr] 97 | pub fn solve_as_child(&mut self) -> Option { [INFO] [stderr] | ------------ expected `std::option::Option` because of return type [INFO] [stderr] 98 | / while let res = self.step_as_child() { [INFO] [stderr] 99 | | } [INFO] [stderr] | |_________^ expected enum `std::option::Option`, found () [INFO] [stderr] | [INFO] [stderr] = note: expected type `std::option::Option` [INFO] [stderr] found type `()` [INFO] [stderr] [INFO] [stderr] error: aborting due to 2 previous errors [INFO] [stderr] [INFO] [stderr] Some errors have detailed explanations: E0308, E0599. [INFO] [stderr] For more information about an error, try `rustc --explain E0308`. [INFO] [stderr] error: Could not compile `picross-solver`. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error[E0308]: mismatched types [INFO] [stderr] --> src/puzzle.rs:98:9 [INFO] [stderr] | [INFO] [stderr] 97 | pub fn solve_as_child(&mut self) -> Option { [INFO] [stderr] | ------------ expected `std::option::Option` because of return type [INFO] [stderr] 98 | / while let res = self.step_as_child() { [INFO] [stderr] 99 | | } [INFO] [stderr] | |_________^ expected enum `std::option::Option`, found () [INFO] [stderr] | [INFO] [stderr] = note: expected type `std::option::Option` [INFO] [stderr] found type `()` [INFO] [stderr] [INFO] [stderr] error: aborting due to 2 previous errors [INFO] [stderr] [INFO] [stderr] Some errors have detailed explanations: E0308, E0599. [INFO] [stderr] For more information about an error, try `rustc --explain E0308`. [INFO] [stderr] error: Could not compile `picross-solver`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `"docker" "inspect" "aa7fd3608982dbf10f98e2845deb1a9d3148a9660e12a889fec6536bace49a87"` [INFO] running `"docker" "rm" "-f" "aa7fd3608982dbf10f98e2845deb1a9d3148a9660e12a889fec6536bace49a87"` [INFO] [stdout] aa7fd3608982dbf10f98e2845deb1a9d3148a9660e12a889fec6536bace49a87