[INFO] cloning repository https://github.com/GrayStrider/playground-rust-book [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/GrayStrider/playground-rust-book" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGrayStrider%2Fplayground-rust-book", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGrayStrider%2Fplayground-rust-book'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] bd341c23ce48da1b2611c5ee517e5a95c5bc8a50 [INFO] testing GrayStrider/playground-rust-book against 1.55.0 for beta-1.56-2 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGrayStrider%2Fplayground-rust-book" "/workspace/builds/worker-117/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-117/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/GrayStrider/playground-rust-book 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/GrayStrider/playground-rust-book [INFO] finished tweaking git repo https://github.com/GrayStrider/playground-rust-book [INFO] tweaked toml for git repo https://github.com/GrayStrider/playground-rust-book written to /workspace/builds/worker-117/source/Cargo.toml [INFO] crate git repo https://github.com/GrayStrider/playground-rust-book 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] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/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] 6b697ba7486109bb87b4153974f4f490fc65d07a38524dc1b967a28c9fb51d2d [INFO] running `Command { std: "docker" "start" "-a" "6b697ba7486109bb87b4153974f4f490fc65d07a38524dc1b967a28c9fb51d2d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "6b697ba7486109bb87b4153974f4f490fc65d07a38524dc1b967a28c9fb51d2d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6b697ba7486109bb87b4153974f4f490fc65d07a38524dc1b967a28c9fb51d2d", kill_on_drop: false }` [INFO] [stdout] 6b697ba7486109bb87b4153974f4f490fc65d07a38524dc1b967a28c9fb51d2d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/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] 08e4f79631a53677a753ee78cab09fa6d1543a3625e2e3dd714b8ccc7bacda69 [INFO] running `Command { std: "docker" "start" "-a" "08e4f79631a53677a753ee78cab09fa6d1543a3625e2e3dd714b8ccc7bacda69", kill_on_drop: false }` [INFO] [stderr] Compiling pipeline v0.5.0 [INFO] [stderr] Compiling num-traits v0.2.12 [INFO] [stderr] Compiling num-integer v0.1.43 [INFO] [stderr] Compiling num-bigint v0.3.0 [INFO] [stderr] Compiling num-iter v0.1.41 [INFO] [stderr] Compiling num-rational v0.3.0 [INFO] [stderr] Compiling num-complex v0.3.0 [INFO] [stderr] Compiling num v0.3.0 [INFO] [stderr] Compiling play3 v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/std/vectors_arrays.rs:26:2 [INFO] [stdout] | [INFO] [stdout] 26 | &v[2]; [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/std/vectors_arrays.rs:27:2 [INFO] [stdout] | [INFO] [stdout] 27 | &a[2]; [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1m 30s [INFO] running `Command { std: "docker" "inspect" "08e4f79631a53677a753ee78cab09fa6d1543a3625e2e3dd714b8ccc7bacda69", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "08e4f79631a53677a753ee78cab09fa6d1543a3625e2e3dd714b8ccc7bacda69", kill_on_drop: false }` [INFO] [stdout] 08e4f79631a53677a753ee78cab09fa6d1543a3625e2e3dd714b8ccc7bacda69 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/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] bd0c770cdb6265a3c5a3209f9fafbe3d46b6ddb5f272b9d488aca512e583e192 [INFO] running `Command { std: "docker" "start" "-a" "bd0c770cdb6265a3c5a3209f9fafbe3d46b6ddb5f272b9d488aca512e583e192", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling play3 v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/std/vectors_arrays.rs:26:2 [INFO] [stdout] | [INFO] [stdout] 26 | &v[2]; [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/std/vectors_arrays.rs:27:2 [INFO] [stdout] | [INFO] [stdout] 27 | &a[2]; [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/std/vectors_arrays.rs:26:2 [INFO] [stdout] | [INFO] [stdout] 26 | &v[2]; [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/std/vectors_arrays.rs:27:2 [INFO] [stdout] | [INFO] [stdout] 27 | &a[2]; [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 1.76s [INFO] running `Command { std: "docker" "inspect" "bd0c770cdb6265a3c5a3209f9fafbe3d46b6ddb5f272b9d488aca512e583e192", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "bd0c770cdb6265a3c5a3209f9fafbe3d46b6ddb5f272b9d488aca512e583e192", kill_on_drop: false }` [INFO] [stdout] bd0c770cdb6265a3c5a3209f9fafbe3d46b6ddb5f272b9d488aca512e583e192 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/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] 51f50e0848e86512c2015f959b5e503155cf6fe4ec03894c2655067887021f2f [INFO] running `Command { std: "docker" "start" "-a" "51f50e0848e86512c2015f959b5e503155cf6fe4ec03894c2655067887021f2f", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] warning: unused borrow that must be used [INFO] [stderr] --> src/std/vectors_arrays.rs:26:2 [INFO] [stderr] | [INFO] [stderr] 26 | &v[2]; [INFO] [stderr] | ^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused borrow that must be used [INFO] [stderr] --> src/std/vectors_arrays.rs:27:2 [INFO] [stderr] | [INFO] [stderr] 27 | &a[2]; [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: `play3` (lib) generated 2 warnings [INFO] [stderr] warning: `play3` (lib test) generated 2 warnings (2 duplicates) [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 19.86s [INFO] [stdout] [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/play3-518a651b7c264ff9) [INFO] [stdout] running 3 tests [INFO] [stdout] test fp::composition::adds ... ok [INFO] [stdout] test fp::tests::pipe_ ... ok [INFO] [stdout] test fp::tests::iterators ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s [INFO] [stdout] [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/play3-d388eeef0a57ed86) [INFO] [stdout] [INFO] [stderr] Doc-tests play3 [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] [stdout] [INFO] [stdout] running 1 test [INFO] [stdout] test src/basics.rs - basics::main::comments::add_one (line 73) ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.34s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "51f50e0848e86512c2015f959b5e503155cf6fe4ec03894c2655067887021f2f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "51f50e0848e86512c2015f959b5e503155cf6fe4ec03894c2655067887021f2f", kill_on_drop: false }` [INFO] [stdout] 51f50e0848e86512c2015f959b5e503155cf6fe4ec03894c2655067887021f2f