[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 beta-2022-02-22 for beta-1.60-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGrayStrider%2Fplayground-rust-book" "/workspace/builds/worker-68/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-68/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/GrayStrider/playground-rust-book on toolchain beta-2022-02-22 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "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-68/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" "+beta-2022-02-22" "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-68/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 60055a6852138cd1fd34767bc25f8e74698894134e02440e6c5f2f0ff6dcbb62 [INFO] running `Command { std: "docker" "start" "-a" "60055a6852138cd1fd34767bc25f8e74698894134e02440e6c5f2f0ff6dcbb62", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "60055a6852138cd1fd34767bc25f8e74698894134e02440e6c5f2f0ff6dcbb62", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "60055a6852138cd1fd34767bc25f8e74698894134e02440e6c5f2f0ff6dcbb62", kill_on_drop: false }` [INFO] [stdout] 60055a6852138cd1fd34767bc25f8e74698894134e02440e6c5f2f0ff6dcbb62 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c56caebb5d4a1840e853031847640aa70fc4933f16c33f875d21822885472594 [INFO] running `Command { std: "docker" "start" "-a" "c56caebb5d4a1840e853031847640aa70fc4933f16c33f875d21822885472594", 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] | ^^^^^ 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] 26 | let _ = &v[2]; [INFO] [stdout] | +++++++ [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] | ^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 27 | let _ = &a[2]; [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Chars` that must be used [INFO] [stdout] --> src/std/strings.rs:41:2 [INFO] [stdout] | [INFO] [stdout] 41 | word.chars(); [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: iterators are lazy and do nothing unless consumed [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::str::Bytes` that must be used [INFO] [stdout] --> src/std/strings.rs:42:2 [INFO] [stdout] | [INFO] [stdout] 42 | word.bytes(); [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: iterators are lazy and do nothing unless consumed [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 59.26s [INFO] running `Command { std: "docker" "inspect" "c56caebb5d4a1840e853031847640aa70fc4933f16c33f875d21822885472594", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c56caebb5d4a1840e853031847640aa70fc4933f16c33f875d21822885472594", kill_on_drop: false }` [INFO] [stdout] c56caebb5d4a1840e853031847640aa70fc4933f16c33f875d21822885472594 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 681418538b9e4c9e4c0a55d02abcd1cf834806d48af3e3f261e113309d06b7ce [INFO] running `Command { std: "docker" "start" "-a" "681418538b9e4c9e4c0a55d02abcd1cf834806d48af3e3f261e113309d06b7ce", 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] | ^^^^^ 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] 26 | let _ = &v[2]; [INFO] [stdout] | +++++++ [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] | ^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 27 | let _ = &a[2]; [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Chars` that must be used [INFO] [stdout] --> src/std/strings.rs:41:2 [INFO] [stdout] | [INFO] [stdout] 41 | word.chars(); [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: iterators are lazy and do nothing unless consumed [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::str::Bytes` that must be used [INFO] [stdout] --> src/std/strings.rs:42:2 [INFO] [stdout] | [INFO] [stdout] 42 | word.bytes(); [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: iterators are lazy and do nothing unless consumed [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 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] | ^^^^^ 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] 26 | let _ = &v[2]; [INFO] [stdout] | +++++++ [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] | ^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 27 | let _ = &a[2]; [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Chars` that must be used [INFO] [stdout] --> src/std/strings.rs:41:2 [INFO] [stdout] | [INFO] [stdout] 41 | word.chars(); [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: iterators are lazy and do nothing unless consumed [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::str::Bytes` that must be used [INFO] [stdout] --> src/std/strings.rs:42:2 [INFO] [stdout] | [INFO] [stdout] 42 | word.bytes(); [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: iterators are lazy and do nothing unless consumed [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.54s [INFO] running `Command { std: "docker" "inspect" "681418538b9e4c9e4c0a55d02abcd1cf834806d48af3e3f261e113309d06b7ce", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "681418538b9e4c9e4c0a55d02abcd1cf834806d48af3e3f261e113309d06b7ce", kill_on_drop: false }` [INFO] [stdout] 681418538b9e4c9e4c0a55d02abcd1cf834806d48af3e3f261e113309d06b7ce [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] d671dd54f6530504e05f66077845b403e05167d7c626c51e276ac6391d27f05d [INFO] running `Command { std: "docker" "start" "-a" "d671dd54f6530504e05f66077845b403e05167d7c626c51e276ac6391d27f05d", 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] | ^^^^^ 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] 26 | let _ = &v[2]; [INFO] [stderr] | +++++++ [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] | ^^^^^ the borrow produces a value [INFO] [stderr] | [INFO] [stderr] help: use `let _ = ...` to ignore the resulting value [INFO] [stderr] | [INFO] [stderr] 27 | let _ = &a[2]; [INFO] [stderr] | +++++++ [INFO] [stderr] [INFO] [stderr] warning: unused `Chars` that must be used [INFO] [stderr] --> src/std/strings.rs:41:2 [INFO] [stderr] | [INFO] [stderr] 41 | word.chars(); [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: iterators are lazy and do nothing unless consumed [INFO] [stderr] [INFO] [stderr] warning: unused `std::str::Bytes` that must be used [INFO] [stderr] --> src/std/strings.rs:42:2 [INFO] [stderr] | [INFO] [stderr] 42 | word.bytes(); [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: iterators are lazy and do nothing unless consumed [INFO] [stderr] [INFO] [stderr] warning: `play3` (lib) generated 4 warnings [INFO] [stderr] warning: `play3` (lib test) generated 4 warnings (4 duplicates) [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.07s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/play3-e06ec41fdf24cc62) [INFO] [stdout] [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] [stderr] Running unittests (/opt/rustwide/target/debug/deps/play3-948b58cf31b19848) [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 0.20s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "d671dd54f6530504e05f66077845b403e05167d7c626c51e276ac6391d27f05d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d671dd54f6530504e05f66077845b403e05167d7c626c51e276ac6391d27f05d", kill_on_drop: false }` [INFO] [stdout] d671dd54f6530504e05f66077845b403e05167d7c626c51e276ac6391d27f05d