[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-1.56-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGrayStrider%2Fplayground-rust-book" "/workspace/builds/worker-8/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-8/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-8/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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 476cab6eef35ed79ed1ac26e3bf60a3455736ec07739db693e3863dec53f10d9 [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" "476cab6eef35ed79ed1ac26e3bf60a3455736ec07739db693e3863dec53f10d9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "476cab6eef35ed79ed1ac26e3bf60a3455736ec07739db693e3863dec53f10d9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "476cab6eef35ed79ed1ac26e3bf60a3455736ec07739db693e3863dec53f10d9", kill_on_drop: false }` [INFO] [stdout] 476cab6eef35ed79ed1ac26e3bf60a3455736ec07739db693e3863dec53f10d9 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] be247b96dda4a3532c23fb0de06d05116585de0e313fa67e544d3c640970e607 [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" "be247b96dda4a3532c23fb0de06d05116585de0e313fa67e544d3c640970e607", 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-rational v0.3.0 [INFO] [stderr] Compiling num-iter v0.1.41 [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 13.81s [INFO] running `Command { std: "docker" "inspect" "be247b96dda4a3532c23fb0de06d05116585de0e313fa67e544d3c640970e607", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "be247b96dda4a3532c23fb0de06d05116585de0e313fa67e544d3c640970e607", kill_on_drop: false }` [INFO] [stdout] be247b96dda4a3532c23fb0de06d05116585de0e313fa67e544d3c640970e607 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 75db71520d1c4c57f6d90f4002406899b0ad84c121f496f02404697d1d706eec [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" "75db71520d1c4c57f6d90f4002406899b0ad84c121f496f02404697d1d706eec", kill_on_drop: false }` [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 1.98s [INFO] running `Command { std: "docker" "inspect" "75db71520d1c4c57f6d90f4002406899b0ad84c121f496f02404697d1d706eec", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "75db71520d1c4c57f6d90f4002406899b0ad84c121f496f02404697d1d706eec", kill_on_drop: false }` [INFO] [stdout] 75db71520d1c4c57f6d90f4002406899b0ad84c121f496f02404697d1d706eec [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 37254edf95e15ea589a18532a26eabd13871a8bd32893809d92da1883a09db53 [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" "37254edf95e15ea589a18532a26eabd13871a8bd32893809d92da1883a09db53", kill_on_drop: false }` [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 0.02s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/play3-518a651b7c264ff9) [INFO] [stdout] [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/play3-d388eeef0a57ed86) [INFO] [stdout] running 3 tests [INFO] [stdout] test fp::composition::adds ... ok [INFO] [stdout] test fp::tests::iterators ... ok [INFO] [stdout] test fp::tests::pipe_ ... 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] [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] Doc-tests play3 [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 0.80s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "37254edf95e15ea589a18532a26eabd13871a8bd32893809d92da1883a09db53", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "37254edf95e15ea589a18532a26eabd13871a8bd32893809d92da1883a09db53", kill_on_drop: false }` [INFO] [stdout] 37254edf95e15ea589a18532a26eabd13871a8bd32893809d92da1883a09db53