[INFO] cloning repository https://github.com/robdimsdale/wordsquare [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/robdimsdale/wordsquare" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frobdimsdale%2Fwordsquare", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frobdimsdale%2Fwordsquare'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 1a5bb9681c3228f4219e6779a9069374575179ad [INFO] testing robdimsdale/wordsquare against 1.55.0 for beta-1.56-2 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frobdimsdale%2Fwordsquare" "/workspace/builds/worker-7/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/robdimsdale/wordsquare on toolchain 1.55.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/robdimsdale/wordsquare [INFO] finished tweaking git repo https://github.com/robdimsdale/wordsquare [INFO] tweaked toml for git repo https://github.com/robdimsdale/wordsquare written to /workspace/builds/worker-7/source/Cargo.toml [INFO] crate git repo https://github.com/robdimsdale/wordsquare already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] f6c23149e101ef34f4a19b723de78fcc056e102ee9d9a82c9af66255002cbb55 [INFO] running `Command { std: "docker" "start" "-a" "f6c23149e101ef34f4a19b723de78fcc056e102ee9d9a82c9af66255002cbb55", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "f6c23149e101ef34f4a19b723de78fcc056e102ee9d9a82c9af66255002cbb55", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f6c23149e101ef34f4a19b723de78fcc056e102ee9d9a82c9af66255002cbb55", kill_on_drop: false }` [INFO] [stdout] f6c23149e101ef34f4a19b723de78fcc056e102ee9d9a82c9af66255002cbb55 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 9b1bff4620083bd401d65f4eb1e5819a234d02cc047c28ea07d30d2325a16f89 [INFO] running `Command { std: "docker" "start" "-a" "9b1bff4620083bd401d65f4eb1e5819a234d02cc047c28ea07d30d2325a16f89", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.71 [INFO] [stderr] Compiling getrandom v0.1.14 [INFO] [stderr] Compiling atty v0.2.14 [INFO] [stderr] Compiling clap v2.33.1 [INFO] [stderr] Compiling rand_core v0.5.1 [INFO] [stderr] Compiling rand_chacha v0.2.2 [INFO] [stderr] Compiling rand v0.7.3 [INFO] [stderr] Compiling wordsearch v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: an associated function with this name may be added to the standard library in the future [INFO] [stdout] --> src/lib.rs:137:41 [INFO] [stdout] | [INFO] [stdout] 137 | row.clone().into_iter().intersperse(' ').collect::() [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unstable_name_collisions)]` on by default [INFO] [stdout] = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior! [INFO] [stdout] = note: for more information, see issue #48919 [INFO] [stdout] = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 10.61s [INFO] running `Command { std: "docker" "inspect" "9b1bff4620083bd401d65f4eb1e5819a234d02cc047c28ea07d30d2325a16f89", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9b1bff4620083bd401d65f4eb1e5819a234d02cc047c28ea07d30d2325a16f89", kill_on_drop: false }` [INFO] [stdout] 9b1bff4620083bd401d65f4eb1e5819a234d02cc047c28ea07d30d2325a16f89 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 6b70af076e81401d145cb5404a1b83affa734014f3d4eb5f1a9973be1fd093cf [INFO] running `Command { std: "docker" "start" "-a" "6b70af076e81401d145cb5404a1b83affa734014f3d4eb5f1a9973be1fd093cf", kill_on_drop: false }` [INFO] [stderr] Compiling syn v1.0.33 [INFO] [stderr] Compiling serde_json v1.0.56 [INFO] [stderr] Compiling memoffset v0.5.4 [INFO] [stderr] Compiling num-traits v0.2.12 [INFO] [stderr] Compiling num_cpus v1.13.0 [INFO] [stderr] Compiling bstr v0.2.13 [INFO] [stdout] warning: an associated function with this name may be added to the standard library in the future [INFO] [stdout] --> src/lib.rs:137:41 [INFO] [stdout] | [INFO] [stdout] 137 | row.clone().into_iter().intersperse(' ').collect::() [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unstable_name_collisions)]` on by default [INFO] [stdout] = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior! [INFO] [stdout] = note: for more information, see issue #48919 [INFO] [stdout] = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling crossbeam-epoch v0.8.2 [INFO] [stderr] Compiling csv v1.1.3 [INFO] [stderr] Compiling crossbeam-deque v0.7.3 [INFO] [stderr] Compiling rayon-core v1.7.1 [INFO] [stderr] Compiling tinytemplate v1.1.0 [INFO] [stderr] Compiling plotters v0.2.15 [INFO] [stderr] Compiling rayon v1.3.1 [INFO] [stderr] Compiling serde_derive v1.0.114 [INFO] [stderr] Compiling criterion v0.3.3 [INFO] [stderr] Compiling wordsearch v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: an associated function with this name may be added to the standard library in the future [INFO] [stdout] --> src/lib.rs:137:41 [INFO] [stdout] | [INFO] [stdout] 137 | row.clone().into_iter().intersperse(' ').collect::() [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unstable_name_collisions)]` on by default [INFO] [stdout] = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior! [INFO] [stdout] = note: for more information, see issue #48919 [INFO] [stdout] = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 30.26s [INFO] running `Command { std: "docker" "inspect" "6b70af076e81401d145cb5404a1b83affa734014f3d4eb5f1a9973be1fd093cf", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6b70af076e81401d145cb5404a1b83affa734014f3d4eb5f1a9973be1fd093cf", kill_on_drop: false }` [INFO] [stdout] 6b70af076e81401d145cb5404a1b83affa734014f3d4eb5f1a9973be1fd093cf [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 803e1e94617b3b197e4a4d571ef5ab0d567437c338ed296550c50767d71de1a5 [INFO] running `Command { std: "docker" "start" "-a" "803e1e94617b3b197e4a4d571ef5ab0d567437c338ed296550c50767d71de1a5", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] warning: an associated function with this name may be added to the standard library in the future [INFO] [stderr] --> src/lib.rs:137:41 [INFO] [stderr] | [INFO] [stderr] 137 | row.clone().into_iter().intersperse(' ').collect::() [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unstable_name_collisions)]` on by default [INFO] [stderr] = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior! [INFO] [stderr] = note: for more information, see issue #48919 [INFO] [stderr] = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method [INFO] [stderr] [INFO] [stderr] warning: `wordsearch` (lib) generated 1 warning [INFO] [stderr] warning: `wordsearch` (lib test) generated 1 warning (1 duplicate) [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.27s [INFO] [stdout] [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/wordsearch-76a425ef0e9ccd30) [INFO] [stdout] running 7 tests [INFO] [stdout] test tests::test_grid_cells_remaining_in_direction ... ok [INFO] [stdout] test tests::test_create_2x2 ... ok [INFO] [stdout] test tests::test_solve_grid_naive_hash_first_letter ... ok [INFO] [stdout] test tests::test_solve_grid_reverse_hash_first_letter ... ok [INFO] [stdout] test tests::test_solve_grid_reverse ... ok [INFO] [stdout] test tests::test_solve_grid_reverse_hash_first_two_letters ... ok [INFO] [stdout] test tests::test_solve_grid_naive ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.16s [INFO] [stdout] [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/wordsearch-b85208561d6a02cc) [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; finished in 0.00s [INFO] [stdout] [INFO] [stderr] Running tests/integration_test.rs (/opt/rustwide/target/debug/deps/integration_test-4bc2730ff8355f4c) [INFO] [stdout] [INFO] [stdout] running 2 tests [INFO] [stdout] test test_solve_grid ... ok [INFO] [stdout] test test_generate_grid ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.08s [INFO] [stdout] [INFO] [stderr] Doc-tests wordsearch [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; finished in 0.00s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "803e1e94617b3b197e4a4d571ef5ab0d567437c338ed296550c50767d71de1a5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "803e1e94617b3b197e4a4d571ef5ab0d567437c338ed296550c50767d71de1a5", kill_on_drop: false }` [INFO] [stdout] 803e1e94617b3b197e4a4d571ef5ab0d567437c338ed296550c50767d71de1a5