[INFO] updating cached repository jakobbeckmann/sudoku [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/jakobbeckmann/sudoku [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/jakobbeckmann/sudoku" "work/ex/beta-1.38-1/sources/1.37.0/gh/jakobbeckmann/sudoku"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/jakobbeckmann/sudoku'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/jakobbeckmann/sudoku" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jakobbeckmann/sudoku"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jakobbeckmann/sudoku'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 8c3b1208e5b1361da88105ab855c9c15e4b19ae2 [INFO] sha for GitHub repo jakobbeckmann/sudoku: 8c3b1208e5b1361da88105ab855c9c15e4b19ae2 [INFO] validating manifest of jakobbeckmann/sudoku on toolchain 1.37.0 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of jakobbeckmann/sudoku on toolchain beta-2019-08-13 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing jakobbeckmann/sudoku [INFO] finished frobbing jakobbeckmann/sudoku [INFO] frobbed toml for jakobbeckmann/sudoku written to work/ex/beta-1.38-1/sources/1.37.0/gh/jakobbeckmann/sudoku/Cargo.toml [INFO] started frobbing jakobbeckmann/sudoku [INFO] finished frobbing jakobbeckmann/sudoku [INFO] frobbed toml for jakobbeckmann/sudoku written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jakobbeckmann/sudoku/Cargo.toml [INFO] crate jakobbeckmann/sudoku already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] testing jakobbeckmann/sudoku against 1.37.0 for beta-1.38-1 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/jakobbeckmann/sudoku:/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=warn" "-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" "+1.37.0" "build" "--frozen"` [INFO] [stdout] d52588b490918162e47cbcdcb03d5fdc9e5bf228d95f9203258af9cc30c77200 [INFO] running `"docker" "start" "-a" "d52588b490918162e47cbcdcb03d5fdc9e5bf228d95f9203258af9cc30c77200"` [INFO] [stderr] Compiling bitflags v1.0.0 [INFO] [stderr] Compiling either v1.3.0 [INFO] [stderr] Compiling serde_json v0.9.10 [INFO] [stderr] Compiling shared_library v0.1.7 [INFO] [stderr] Compiling x11-dl v2.16.0 [INFO] [stderr] Compiling deflate v0.7.17 [INFO] [stderr] Compiling arrayvec v0.4.6 [INFO] [stderr] Compiling phf_generator v0.7.21 [INFO] [stderr] Compiling tempfile v2.2.0 [INFO] [stderr] Compiling num-rational v0.1.40 [INFO] [stderr] Compiling xml-rs v0.7.0 [INFO] [stderr] Compiling phf_codegen v0.7.21 [INFO] [stderr] Compiling coco v0.1.1 [INFO] [stderr] Compiling rusttype v0.2.3 [INFO] [stderr] Compiling osmesa-sys v0.1.2 [INFO] [stderr] Compiling fs2 v0.2.5 [INFO] [stderr] Compiling target_build_utils v0.3.1 [INFO] [stderr] Compiling memmap v0.4.0 [INFO] [stderr] Compiling pistoncore-input v0.20.0 [INFO] [stderr] Compiling rayon-core v1.2.1 [INFO] [stderr] warning[E0311]: the parameter type `K` may not live long enough [INFO] [stderr] --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/rusttype-0.2.3/src/support/bst/map.rs:81:19 [INFO] [stderr] | [INFO] [stderr] 81 | match node.force() { [INFO] [stderr] | ^^^^ [INFO] [stderr] | [INFO] [stderr] = help: consider adding an explicit lifetime bound for `K` [INFO] [stderr] note: the parameter type `K` must be valid for the anonymous lifetime #1 defined on the function body at 77:9... [INFO] [stderr] --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/rusttype-0.2.3/src/support/bst/map.rs:77:9 [INFO] [stderr] | [INFO] [stderr] 77 | / fn clone_subtree( [INFO] [stderr] 78 | | node: node::NodeRef) [INFO] [stderr] 79 | | -> BTreeMap { [INFO] [stderr] 80 | | [INFO] [stderr] ... | [INFO] [stderr] 136| | } [INFO] [stderr] 137| | } [INFO] [stderr] | |_________^ [INFO] [stderr] = warning: this error has been downgraded to a warning for backwards compatibility with previous releases [INFO] [stderr] = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future [INFO] [stderr] = note: for more information, try `rustc --explain E0729` [INFO] [stderr] [INFO] [stderr] warning[E0311]: the parameter type `V` may not live long enough [INFO] [stderr] --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/rusttype-0.2.3/src/support/bst/map.rs:81:19 [INFO] [stderr] | [INFO] [stderr] 81 | match node.force() { [INFO] [stderr] | ^^^^ [INFO] [stderr] | [INFO] [stderr] = help: consider adding an explicit lifetime bound for `V` [INFO] [stderr] note: the parameter type `V` must be valid for the anonymous lifetime #1 defined on the function body at 77:9... [INFO] [stderr] --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/rusttype-0.2.3/src/support/bst/map.rs:77:9 [INFO] [stderr] | [INFO] [stderr] 77 | / fn clone_subtree( [INFO] [stderr] 78 | | node: node::NodeRef) [INFO] [stderr] 79 | | -> BTreeMap { [INFO] [stderr] 80 | | [INFO] [stderr] ... | [INFO] [stderr] 136| | } [INFO] [stderr] 137| | } [INFO] [stderr] | |_________^ [INFO] [stderr] = warning: this error has been downgraded to a warning for backwards compatibility with previous releases [INFO] [stderr] = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future [INFO] [stderr] = note: for more information, try `rustc --explain E0729` [INFO] [stderr] [INFO] [stderr] Compiling png v0.11.0 [INFO] [stderr] Compiling gl_generator v0.6.1 [INFO] [stderr] Compiling rayon v0.8.2 [INFO] [stderr] Compiling pistoncore-window v0.30.0 [INFO] [stderr] Compiling piston2d-graphics v0.23.0 [INFO] [stderr] Compiling glutin v0.10.1 [INFO] [stderr] Compiling gl v0.6.5 [INFO] [stderr] Compiling pistoncore-event_loop v0.35.0 [INFO] [stderr] Compiling piston v0.35.0 [INFO] [stderr] Compiling jpeg-decoder v0.1.13 [INFO] [stderr] Compiling image v0.17.0 [INFO] [stderr] Compiling libloading v0.3.4 [INFO] [stderr] Compiling dlib v0.3.1 [INFO] [stderr] Compiling wayland-sys v0.9.10 [INFO] [stderr] Compiling wayland-client v0.9.10 [INFO] [stderr] Compiling wayland-protocols v0.9.10 [INFO] [stderr] Compiling wayland-kbd v0.9.1 [INFO] [stderr] Compiling piston2d-opengl_graphics v0.49.0 [INFO] [stderr] Compiling wayland-window v0.8.0 [INFO] [stderr] Compiling winit v0.8.3 [INFO] [stderr] Compiling pistoncore-glutin_window v0.42.0 [INFO] [stderr] Compiling sudoku v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: the item `rand` is imported redundantly [INFO] [stderr] --> src/gameboard.rs:56:13 [INFO] [stderr] | [INFO] [stderr] 56 | use rand; [INFO] [stderr] | ^^^^ [INFO] [stderr] | [INFO] [stderr] ::: src/main.rs:9:1 [INFO] [stderr] | [INFO] [stderr] 9 | extern crate rand; [INFO] [stderr] | ------------------ the item `rand` is already imported here [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `idx` [INFO] [stderr] --> src/gameboard.rs:63:17 [INFO] [stderr] | [INFO] [stderr] 63 | for idx in 0..80 { [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_idx` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1m 23s [INFO] running `"docker" "inspect" "d52588b490918162e47cbcdcb03d5fdc9e5bf228d95f9203258af9cc30c77200"` [INFO] running `"docker" "rm" "-f" "d52588b490918162e47cbcdcb03d5fdc9e5bf228d95f9203258af9cc30c77200"` [INFO] [stdout] d52588b490918162e47cbcdcb03d5fdc9e5bf228d95f9203258af9cc30c77200 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/jakobbeckmann/sudoku:/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=warn" "-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" "+1.37.0" "test" "--frozen" "--no-run"` [INFO] [stdout] 9c9206aa8dde3b8b151c2150fda2cd3eed86b349feab35d240bc1d113680efee [INFO] running `"docker" "start" "-a" "9c9206aa8dde3b8b151c2150fda2cd3eed86b349feab35d240bc1d113680efee"` [INFO] [stderr] Compiling sudoku v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: the item `rand` is imported redundantly [INFO] [stderr] --> src/gameboard.rs:56:13 [INFO] [stderr] | [INFO] [stderr] 56 | use rand; [INFO] [stderr] | ^^^^ [INFO] [stderr] | [INFO] [stderr] ::: src/main.rs:9:1 [INFO] [stderr] | [INFO] [stderr] 9 | extern crate rand; [INFO] [stderr] | ------------------ the item `rand` is already imported here [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `idx` [INFO] [stderr] --> src/gameboard.rs:63:17 [INFO] [stderr] | [INFO] [stderr] 63 | for idx in 0..80 { [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_idx` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.84s [INFO] running `"docker" "inspect" "9c9206aa8dde3b8b151c2150fda2cd3eed86b349feab35d240bc1d113680efee"` [INFO] running `"docker" "rm" "-f" "9c9206aa8dde3b8b151c2150fda2cd3eed86b349feab35d240bc1d113680efee"` [INFO] [stdout] 9c9206aa8dde3b8b151c2150fda2cd3eed86b349feab35d240bc1d113680efee [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/jakobbeckmann/sudoku:/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=warn" "-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" "+1.37.0" "test" "--frozen"` [INFO] [stdout] 3659da6bfed0ee001250f48a80d23891fe24965dfc1ba43b97a495c66243ce5e [INFO] running `"docker" "start" "-a" "3659da6bfed0ee001250f48a80d23891fe24965dfc1ba43b97a495c66243ce5e"` [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.12s [INFO] [stderr] Running /opt/crater/target/debug/deps/sudoku-082bf9c57f21b502 [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] running `"docker" "inspect" "3659da6bfed0ee001250f48a80d23891fe24965dfc1ba43b97a495c66243ce5e"` [INFO] running `"docker" "rm" "-f" "3659da6bfed0ee001250f48a80d23891fe24965dfc1ba43b97a495c66243ce5e"` [INFO] [stdout] 3659da6bfed0ee001250f48a80d23891fe24965dfc1ba43b97a495c66243ce5e