[INFO] cloning repository https://github.com/VoxWave/a-b-list-sorter [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/VoxWave/a-b-list-sorter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVoxWave%2Fa-b-list-sorter", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVoxWave%2Fa-b-list-sorter'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] afbf8e0cc87525258f4dedda363fcd2f3d993828 [INFO] testing VoxWave/a-b-list-sorter against 1.60.0 for beta-1.61-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVoxWave%2Fa-b-list-sorter" "/workspace/builds/worker-6/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/VoxWave/a-b-list-sorter on toolchain 1.60.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/VoxWave/a-b-list-sorter [INFO] finished tweaking git repo https://github.com/VoxWave/a-b-list-sorter [INFO] tweaked toml for git repo https://github.com/VoxWave/a-b-list-sorter written to /workspace/builds/worker-6/source/Cargo.toml [INFO] crate git repo https://github.com/VoxWave/a-b-list-sorter already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 317dab22ed60ed506d8397cd095bae521df6bf5760dd57e3ca97d53845d098ed [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "317dab22ed60ed506d8397cd095bae521df6bf5760dd57e3ca97d53845d098ed", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "317dab22ed60ed506d8397cd095bae521df6bf5760dd57e3ca97d53845d098ed", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "317dab22ed60ed506d8397cd095bae521df6bf5760dd57e3ca97d53845d098ed", kill_on_drop: false }` [INFO] [stdout] 317dab22ed60ed506d8397cd095bae521df6bf5760dd57e3ca97d53845d098ed [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 50aaaf709fbf0b3baf2d684c40f4a81b478b923447196df6ad500dbcedd41ff9 [INFO] running `Command { std: "docker" "start" "-a" "50aaaf709fbf0b3baf2d684c40f4a81b478b923447196df6ad500dbcedd41ff9", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.68 [INFO] [stderr] Compiling atty v0.2.14 [INFO] [stderr] Compiling clap v2.33.3 [INFO] [stderr] Compiling list_sorter v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 17.79s [INFO] running `Command { std: "docker" "inspect" "50aaaf709fbf0b3baf2d684c40f4a81b478b923447196df6ad500dbcedd41ff9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "50aaaf709fbf0b3baf2d684c40f4a81b478b923447196df6ad500dbcedd41ff9", kill_on_drop: false }` [INFO] [stdout] 50aaaf709fbf0b3baf2d684c40f4a81b478b923447196df6ad500dbcedd41ff9 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 69d5a3f3a37432f02504f10798bbf64e4be4a37ea0b94632a8d6c60da16a0657 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "69d5a3f3a37432f02504f10798bbf64e4be4a37ea0b94632a8d6c60da16a0657", kill_on_drop: false }` [INFO] [stderr] Compiling getrandom v0.1.14 [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 list_sorter v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/main.rs:390:9 [INFO] [stdout] | [INFO] [stdout] 390 | &mut sorted.shuffle(&mut rng); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 390 | let _ = &mut sorted.shuffle(&mut rng); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/main.rs:424:9 [INFO] [stdout] | [INFO] [stdout] 424 | &mut sorted.shuffle(&mut rng); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 424 | let _ = &mut sorted.shuffle(&mut rng); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/main.rs:450:9 [INFO] [stdout] | [INFO] [stdout] 450 | &mut sorted.shuffle(&mut rng); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 450 | let _ = &mut sorted.shuffle(&mut rng); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/main.rs:462:9 [INFO] [stdout] | [INFO] [stdout] 462 | &mut sorted.shuffle(&mut rng); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 462 | let _ = &mut sorted.shuffle(&mut rng); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/main.rs:485:9 [INFO] [stdout] | [INFO] [stdout] 485 | &mut sorted.shuffle(&mut rng); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 485 | let _ = &mut sorted.shuffle(&mut rng); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/main.rs:518:9 [INFO] [stdout] | [INFO] [stdout] 518 | &mut sorted.shuffle(&mut rng); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 518 | let _ = &mut sorted.shuffle(&mut rng); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/main.rs:551:9 [INFO] [stdout] | [INFO] [stdout] 551 | &mut sorted.shuffle(&mut rng); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 551 | let _ = &mut sorted.shuffle(&mut rng); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 7 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 8.71s [INFO] running `Command { std: "docker" "inspect" "69d5a3f3a37432f02504f10798bbf64e4be4a37ea0b94632a8d6c60da16a0657", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "69d5a3f3a37432f02504f10798bbf64e4be4a37ea0b94632a8d6c60da16a0657", kill_on_drop: false }` [INFO] [stdout] 69d5a3f3a37432f02504f10798bbf64e4be4a37ea0b94632a8d6c60da16a0657 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 2581aac8122dd218505f08114b2a0609e684582ce82303dc6c2e47338649c1e2 [INFO] running `Command { std: "docker" "start" "-a" "2581aac8122dd218505f08114b2a0609e684582ce82303dc6c2e47338649c1e2", kill_on_drop: false }` [INFO] [stderr] warning: unused borrow that must be used [INFO] [stderr] --> src/main.rs:390:9 [INFO] [stderr] | [INFO] [stderr] 390 | &mut sorted.shuffle(&mut rng); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] help: use `let _ = ...` to ignore the resulting value [INFO] [stderr] | [INFO] [stderr] 390 | let _ = &mut sorted.shuffle(&mut rng); [INFO] [stderr] | +++++++ [INFO] [stderr] [INFO] [stderr] warning: unused borrow that must be used [INFO] [stderr] --> src/main.rs:424:9 [INFO] [stderr] | [INFO] [stderr] 424 | &mut sorted.shuffle(&mut rng); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stderr] | [INFO] [stderr] help: use `let _ = ...` to ignore the resulting value [INFO] [stderr] | [INFO] [stderr] 424 | let _ = &mut sorted.shuffle(&mut rng); [INFO] [stderr] | +++++++ [INFO] [stderr] [INFO] [stderr] warning: unused borrow that must be used [INFO] [stderr] --> src/main.rs:450:9 [INFO] [stderr] | [INFO] [stderr] 450 | &mut sorted.shuffle(&mut rng); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stderr] | [INFO] [stderr] help: use `let _ = ...` to ignore the resulting value [INFO] [stderr] | [INFO] [stderr] 450 | let _ = &mut sorted.shuffle(&mut rng); [INFO] [stderr] | +++++++ [INFO] [stderr] [INFO] [stderr] warning: unused borrow that must be used [INFO] [stderr] --> src/main.rs:462:9 [INFO] [stderr] | [INFO] [stderr] 462 | &mut sorted.shuffle(&mut rng); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stderr] | [INFO] [stderr] help: use `let _ = ...` to ignore the resulting value [INFO] [stderr] | [INFO] [stderr] 462 | let _ = &mut sorted.shuffle(&mut rng); [INFO] [stderr] | +++++++ [INFO] [stderr] [INFO] [stderr] warning: unused borrow that must be used [INFO] [stderr] --> src/main.rs:485:9 [INFO] [stderr] | [INFO] [stderr] 485 | &mut sorted.shuffle(&mut rng); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stderr] | [INFO] [stderr] help: use `let _ = ...` to ignore the resulting value [INFO] [stderr] | [INFO] [stderr] 485 | let _ = &mut sorted.shuffle(&mut rng); [INFO] [stderr] | +++++++ [INFO] [stderr] [INFO] [stderr] warning: unused borrow that must be used [INFO] [stderr] --> src/main.rs:518:9 [INFO] [stderr] | [INFO] [stderr] 518 | &mut sorted.shuffle(&mut rng); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stderr] | [INFO] [stderr] help: use `let _ = ...` to ignore the resulting value [INFO] [stderr] | [INFO] [stderr] 518 | let _ = &mut sorted.shuffle(&mut rng); [INFO] [stderr] | +++++++ [INFO] [stderr] [INFO] [stderr] warning: unused borrow that must be used [INFO] [stderr] --> src/main.rs:551:9 [INFO] [stderr] | [INFO] [stderr] 551 | &mut sorted.shuffle(&mut rng); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stderr] | [INFO] [stderr] help: use `let _ = ...` to ignore the resulting value [INFO] [stderr] | [INFO] [stderr] 551 | let _ = &mut sorted.shuffle(&mut rng); [INFO] [stderr] | +++++++ [INFO] [stderr] [INFO] [stderr] warning: `list_sorter` (bin "list_sorter" test) generated 7 warnings [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.04s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/list_sorter-f7e3c247ec250462) [INFO] [stdout] [INFO] [stdout] running 11 tests [INFO] [stdout] test merge_sort_test_1 ... ok [INFO] [stdout] test merge_sort_test_2 ... ok [INFO] [stdout] test runs_should_be_the_same ... ok [INFO] [stdout] test sort_test_1 ... ok [INFO] [stdout] test sort_test_2 ... ok [INFO] [stdout] test merge_sort_test_3 ... ok [INFO] [stdout] test sort_test_3 ... ok [INFO] [stdout] test merge_is_better_than_std ... ok [INFO] [stdout] test merge_is_better_than_std_unstable ... ok [INFO] [stdout] test merge_is_better_2 ... ok [INFO] [stdout] test merge_is_better ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 16.45s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "2581aac8122dd218505f08114b2a0609e684582ce82303dc6c2e47338649c1e2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2581aac8122dd218505f08114b2a0609e684582ce82303dc6c2e47338649c1e2", kill_on_drop: false }` [INFO] [stdout] 2581aac8122dd218505f08114b2a0609e684582ce82303dc6c2e47338649c1e2