[INFO] cloning repository https://github.com/pierrechevalier83/2048-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pierrechevalier83/2048-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpierrechevalier83%2F2048-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpierrechevalier83%2F2048-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8de61e8e0342d54b0ae44b937ecb3952c4d2a94c
[INFO] testing pierrechevalier83/2048-rs against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpierrechevalier83%2F2048-rs" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pierrechevalier83/2048-rs on toolchain ecabaf78506b7a4668d42dc20268c086b93f0fad
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/pierrechevalier83/2048-rs
[INFO] finished tweaking git repo https://github.com/pierrechevalier83/2048-rs
[INFO] tweaked toml for git repo https://github.com/pierrechevalier83/2048-rs written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/pierrechevalier83/2048-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num-bigint v0.1.36
[INFO] [stderr]   Downloaded clippy v0.0.165
[INFO] [stderr]   Downloaded matrix_display v0.3.0
[INFO] [stderr]   Downloaded termion v1.2.0
[INFO] [stderr]   Downloaded clippy_lints v0.0.165
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d08375c004ace1d8fcc48f5e0adff6f7bb9983d19bbd52a28d0ce8c29b7cade1
[INFO] running `Command { std: "docker" "start" "-a" "d08375c004ace1d8fcc48f5e0adff6f7bb9983d19bbd52a28d0ce8c29b7cade1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d08375c004ace1d8fcc48f5e0adff6f7bb9983d19bbd52a28d0ce8c29b7cade1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d08375c004ace1d8fcc48f5e0adff6f7bb9983d19bbd52a28d0ce8c29b7cade1", kill_on_drop: false }`
[INFO] [stdout] d08375c004ace1d8fcc48f5e0adff6f7bb9983d19bbd52a28d0ce8c29b7cade1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c60d6733a8d845945872096c606572c990fcd4b9b3fa808fbcd29b260dc18c4e
[INFO] running `Command { std: "docker" "start" "-a" "c60d6733a8d845945872096c606572c990fcd4b9b3fa808fbcd29b260dc18c4e", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.1.37
[INFO] [stderr]    Compiling libc v0.2.20
[INFO] [stderr]    Compiling rustc-serialize v0.3.22
[INFO] [stderr]    Compiling ansi_term v0.9.0
[INFO] [stderr]    Compiling unicode-segmentation v1.1.0
[INFO] [stderr]    Compiling matrix_display v0.3.0
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]    Compiling termion v1.2.0
[INFO] [stderr]    Compiling num-integer v0.1.33
[INFO] [stderr]    Compiling num-iter v0.1.33
[INFO] [stderr]    Compiling num-bigint v0.1.36
[INFO] [stderr]    Compiling num-complex v0.1.36
[INFO] [stderr]    Compiling num-rational v0.1.36
[INFO] [stderr]    Compiling num v0.1.37
[INFO] [stderr]    Compiling game-2048 v0.5.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `collect` that must be used
[INFO] [stdout]   --> src/game.rs:69:9
[INFO] [stdout]    |
[INFO] [stdout] 69 | /         self.data
[INFO] [stdout] 70 | |             .chunks_mut(4)
[INFO] [stdout] 71 | |             .map(|row| {
[INFO] [stdout] 72 | |                 let (new_row, new_score) = match dir {
[INFO] [stdout] ...  |
[INFO] [stdout] 87 | |             })
[INFO] [stdout] 88 | |             .collect::<Vec<_>>();
[INFO] [stdout]    | |_________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.39s
[INFO] running `Command { std: "docker" "inspect" "c60d6733a8d845945872096c606572c990fcd4b9b3fa808fbcd29b260dc18c4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c60d6733a8d845945872096c606572c990fcd4b9b3fa808fbcd29b260dc18c4e", kill_on_drop: false }`
[INFO] [stdout] c60d6733a8d845945872096c606572c990fcd4b9b3fa808fbcd29b260dc18c4e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9726437c082f9e009f81aa6faaf21f84f4db22d9caef32dd1b765298d4607738
[INFO] running `Command { std: "docker" "start" "-a" "9726437c082f9e009f81aa6faaf21f84f4db22d9caef32dd1b765298d4607738", kill_on_drop: false }`
[INFO] [stderr]    Compiling game-2048 v0.5.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `collect` that must be used
[INFO] [stdout]   --> src/game.rs:69:9
[INFO] [stdout]    |
[INFO] [stdout] 69 | /         self.data
[INFO] [stdout] 70 | |             .chunks_mut(4)
[INFO] [stdout] 71 | |             .map(|row| {
[INFO] [stdout] 72 | |                 let (new_row, new_score) = match dir {
[INFO] [stdout] ...  |
[INFO] [stdout] 87 | |             })
[INFO] [stdout] 88 | |             .collect::<Vec<_>>();
[INFO] [stdout]    | |_________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.89s
[INFO] running `Command { std: "docker" "inspect" "9726437c082f9e009f81aa6faaf21f84f4db22d9caef32dd1b765298d4607738", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9726437c082f9e009f81aa6faaf21f84f4db22d9caef32dd1b765298d4607738", kill_on_drop: false }`
[INFO] [stdout] 9726437c082f9e009f81aa6faaf21f84f4db22d9caef32dd1b765298d4607738
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 046b2f7a2944b6e382a057a2ed4b6b90debcc3efb6b40a31092318445def119a
[INFO] running `Command { std: "docker" "start" "-a" "046b2f7a2944b6e382a057a2ed4b6b90debcc3efb6b40a31092318445def119a", kill_on_drop: false }`
[INFO] [stderr] warning: unused return value of `collect` that must be used
[INFO] [stderr]   --> src/game.rs:69:9
[INFO] [stderr]    |
[INFO] [stderr] 69 | /         self.data
[INFO] [stderr] 70 | |             .chunks_mut(4)
[INFO] [stderr] 71 | |             .map(|row| {
[INFO] [stderr] 72 | |                 let (new_row, new_score) = match dir {
[INFO] [stderr] ...  |
[INFO] [stderr] 87 | |             })
[INFO] [stderr] 88 | |             .collect::<Vec<_>>();
[INFO] [stderr]    | |_________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/game_2048-d93dfec371fafe6d)
[INFO] [stdout] running 14 tests
[INFO] [stdout] test algorithm::slide_test::test_slide_left_with_four_different_elements ... ok
[INFO] [stdout] test algorithm::slide_test::test_slide_left_with_four_same_elements ... ok
[INFO] [stdout] test algorithm::slide_test::test_slide_left_with_one_element ... ok
[INFO] [stdout] test algorithm::slide_test::test_slide_left_with_three_different_elements ... ok
[INFO] [stdout] test algorithm::slide_test::test_slide_right_with_one_element ... ok
[INFO] [stdout] test algorithm::slide_test::test_slide_right_with_three_same_elements ... ok
[INFO] [stdout] test algorithm::slide_test::test_slide_left_with_three_same_elements ... ok
[INFO] [stdout] test algorithm::slide_test::test_slide_right_with_four_same_elements ... ok
[INFO] [stdout] test algorithm::slide_test::test_slide_left_with_two_same_elements ... ok
[INFO] [stdout] test algorithm::slide_test::test_slide_right_with_two_different_elements ... ok
[INFO] [stdout] test algorithm::slide_test::test_slide_right_with_four_different_elements ... ok
[INFO] [stdout] test algorithm::slide_test::test_slide_right_with_three_different_elements ... ok
[INFO] [stdout] test algorithm::slide_test::test_slide_right_with_two_same_elements ... ok
[INFO] [stdout] test algorithm::slide_test::test_slide_left_with_two_different_elements ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 14 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "046b2f7a2944b6e382a057a2ed4b6b90debcc3efb6b40a31092318445def119a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "046b2f7a2944b6e382a057a2ed4b6b90debcc3efb6b40a31092318445def119a", kill_on_drop: false }`
[INFO] [stdout] 046b2f7a2944b6e382a057a2ed4b6b90debcc3efb6b40a31092318445def119a