[INFO] fetching crate sudoku-solver 0.4.0...
[INFO] testing sudoku-solver-0.4.0 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] extracting crate sudoku-solver 0.4.0 into /workspace/builds/worker-62/source
[INFO] validating manifest of crates.io crate sudoku-solver 0.4.0 on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sudoku-solver 0.4.0
[INFO] finished tweaking crates.io crate sudoku-solver 0.4.0
[INFO] tweaked toml for crates.io crate sudoku-solver 0.4.0 written to /workspace/builds/worker-62/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bit-iter v1.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e09a0b309813cae31adca544fd8c78d3d6c2df00f2b099e802076f04bcdf8e46
[INFO] running `Command { std: "docker" "start" "-a" "e09a0b309813cae31adca544fd8c78d3d6c2df00f2b099e802076f04bcdf8e46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e09a0b309813cae31adca544fd8c78d3d6c2df00f2b099e802076f04bcdf8e46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e09a0b309813cae31adca544fd8c78d3d6c2df00f2b099e802076f04bcdf8e46", kill_on_drop: false }`
[INFO] [stdout] e09a0b309813cae31adca544fd8c78d3d6c2df00f2b099e802076f04bcdf8e46
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d2b426cbc0f523ba21d28cf48645542c7d07711e1c5a869dd04c015954cca6a8
[INFO] running `Command { std: "docker" "start" "-a" "d2b426cbc0f523ba21d28cf48645542c7d07711e1c5a869dd04c015954cca6a8", kill_on_drop: false }`
[INFO] [stderr]    Compiling bit-iter v1.1.0
[INFO] [stderr]    Compiling sudoku-solver v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `Command { std: "docker" "inspect" "d2b426cbc0f523ba21d28cf48645542c7d07711e1c5a869dd04c015954cca6a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2b426cbc0f523ba21d28cf48645542c7d07711e1c5a869dd04c015954cca6a8", kill_on_drop: false }`
[INFO] [stdout] d2b426cbc0f523ba21d28cf48645542c7d07711e1c5a869dd04c015954cca6a8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1aa843a157806d3e960e8a9057345844d36504fcd36616162178fc374cc19940
[INFO] running `Command { std: "docker" "start" "-a" "1aa843a157806d3e960e8a9057345844d36504fcd36616162178fc374cc19940", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling semver v1.0.4
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling libc v0.2.108
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling serde_json v1.0.71
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling itoa v0.4.8
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling plotters-backend v0.3.2
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling half v1.8.2
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling oorandom v11.1.3
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling itertools v0.10.1
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling plotters-svg v0.3.1
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling bstr v0.2.17
[INFO] [stderr]    Compiling serde_cbor v0.11.2
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling cast v0.2.7
[INFO] [stderr]    Compiling crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling csv v1.1.6
[INFO] [stderr]    Compiling criterion-plot v0.4.4
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling plotters v0.3.1
[INFO] [stderr]    Compiling criterion v0.3.5
[INFO] [stderr]    Compiling sudoku-solver v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 29.59s
[INFO] running `Command { std: "docker" "inspect" "1aa843a157806d3e960e8a9057345844d36504fcd36616162178fc374cc19940", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1aa843a157806d3e960e8a9057345844d36504fcd36616162178fc374cc19940", kill_on_drop: false }`
[INFO] [stdout] 1aa843a157806d3e960e8a9057345844d36504fcd36616162178fc374cc19940
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b48e3c94d9248e1cf4bf1063a6836d25c7204aabf4b375db179774cce359aa2e
[INFO] running `Command { std: "docker" "start" "-a" "b48e3c94d9248e1cf4bf1063a6836d25c7204aabf4b375db179774cce359aa2e", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.76s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/sudoku_solver-ab941d0702ecd9b7)
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test solver::tests::duplicate_in_column_is_detected ... ok
[INFO] [stdout] test solver::tests::duplicate_in_square_is_detected ... ok
[INFO] [stdout] test solver::tests::valid_board_is_passed ... ok
[INFO] [stdout] test solver::tests::invalid_cell_values_are_detected ... ok
[INFO] [stdout] test solver::tests::detects_unsolvable_puzzles ... ok
[INFO] [stdout] test board::tests::string_rep_of_board_is_correct ... ok
[INFO] [stdout] test solver::tests::duplicate_in_row_is_detected ... ok
[INFO] [stdout] test solver::tests::finds_multiple_solutions ... ok
[INFO] [stdout] test solver::tests::solves_solvable_puzzles ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.60s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests sudoku-solver
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test src/board/mod.rs - board::Board::from (line 100) ... ok
[INFO] [stdout] test src/solver/mod.rs - solver::valid (line 24) ... ok
[INFO] [stdout] test src/solver/mod.rs - solver::solve (line 163) ... ok
[INFO] [stdout] test src/lib.rs - (line 36) ... ok
[INFO] [stdout] test src/lib.rs - (line 10) ... ok
[INFO] [stdout] test src/solver/mod.rs - solver::SolutionIter (line 193) ... ok
[INFO] [stdout] test src/board/mod.rs - board::Board::get_cell (line 32) ... ok
[INFO] [stdout] test src/board/mod.rs - board::Board::with_cell (line 77) ... ok
[INFO] [stdout] test src/board/mod.rs - board::Board::set_cell (line 58) ... ok
[INFO] [stdout] test src/solver/mod.rs - solver::SolutionIter::new (line 247) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 7.67s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b48e3c94d9248e1cf4bf1063a6836d25c7204aabf4b375db179774cce359aa2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b48e3c94d9248e1cf4bf1063a6836d25c7204aabf4b375db179774cce359aa2e", kill_on_drop: false }`
[INFO] [stdout] b48e3c94d9248e1cf4bf1063a6836d25c7204aabf4b375db179774cce359aa2e