[INFO] cloning repository https://github.com/tensor-programming/Rust-ownership-and-borrowing [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tensor-programming/Rust-ownership-and-borrowing" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftensor-programming%2FRust-ownership-and-borrowing", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftensor-programming%2FRust-ownership-and-borrowing'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 8722ce4ccb1e658e6279dba15dd6dad7f5e8984d [INFO] testing tensor-programming/Rust-ownership-and-borrowing 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%2Ftensor-programming%2FRust-ownership-and-borrowing" "/workspace/builds/worker-4/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/tensor-programming/Rust-ownership-and-borrowing 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/tensor-programming/Rust-ownership-and-borrowing [INFO] finished tweaking git repo https://github.com/tensor-programming/Rust-ownership-and-borrowing [INFO] tweaked toml for git repo https://github.com/tensor-programming/Rust-ownership-and-borrowing written to /workspace/builds/worker-4/source/Cargo.toml [INFO] crate git repo https://github.com/tensor-programming/Rust-ownership-and-borrowing 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] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 3067409e44a8074152eaad54404bc413bc8e4004b96095df773415bfff73c8ea [INFO] running `Command { std: "docker" "start" "-a" "3067409e44a8074152eaad54404bc413bc8e4004b96095df773415bfff73c8ea", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "3067409e44a8074152eaad54404bc413bc8e4004b96095df773415bfff73c8ea", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3067409e44a8074152eaad54404bc413bc8e4004b96095df773415bfff73c8ea", kill_on_drop: false }` [INFO] [stdout] 3067409e44a8074152eaad54404bc413bc8e4004b96095df773415bfff73c8ea [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 49c9cc64bc1dfcda141ff9d008bcb840334caa597481374ef90b30c5ca2636b1 [INFO] running `Command { std: "docker" "start" "-a" "49c9cc64bc1dfcda141ff9d008bcb840334caa597481374ef90b30c5ca2636b1", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling ownership v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `c` [INFO] [stdout] --> src/main.rs:52:9 [INFO] [stdout] | [INFO] [stdout] 52 | let c = &mut a; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `d` [INFO] [stdout] --> src/main.rs:53:9 [INFO] [stdout] | [INFO] [stdout] 53 | let d = &b; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_d` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/main.rs:61:25 [INFO] [stdout] | [INFO] [stdout] 61 | fn own_and_borrow_stuff(a: &mut String, b: &bool, c: u8) {} [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/main.rs:61:41 [INFO] [stdout] | [INFO] [stdout] 61 | fn own_and_borrow_stuff(a: &mut String, b: &bool, c: u8) {} [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `c` [INFO] [stdout] --> src/main.rs:61:51 [INFO] [stdout] | [INFO] [stdout] 61 | fn own_and_borrow_stuff(a: &mut String, b: &bool, c: u8) {} [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.47s [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "49c9cc64bc1dfcda141ff9d008bcb840334caa597481374ef90b30c5ca2636b1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "49c9cc64bc1dfcda141ff9d008bcb840334caa597481374ef90b30c5ca2636b1", kill_on_drop: false }` [INFO] [stdout] 49c9cc64bc1dfcda141ff9d008bcb840334caa597481374ef90b30c5ca2636b1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 85396a27a9e5f634dc5c19ea953f00afbaaa7c8e9022805c829f8bd1bff73176 [INFO] running `Command { std: "docker" "start" "-a" "85396a27a9e5f634dc5c19ea953f00afbaaa7c8e9022805c829f8bd1bff73176", kill_on_drop: false }` [INFO] [stderr] Compiling ownership v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `c` [INFO] [stdout] --> src/main.rs:52:9 [INFO] [stdout] | [INFO] [stdout] 52 | let c = &mut a; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `d` [INFO] [stdout] --> src/main.rs:53:9 [INFO] [stdout] | [INFO] [stdout] 53 | let d = &b; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_d` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/main.rs:61:25 [INFO] [stdout] | [INFO] [stdout] 61 | fn own_and_borrow_stuff(a: &mut String, b: &bool, c: u8) {} [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/main.rs:61:41 [INFO] [stdout] | [INFO] [stdout] 61 | fn own_and_borrow_stuff(a: &mut String, b: &bool, c: u8) {} [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `c` [INFO] [stdout] --> src/main.rs:61:51 [INFO] [stdout] | [INFO] [stdout] 61 | fn own_and_borrow_stuff(a: &mut String, b: &bool, c: u8) {} [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.32s [INFO] running `Command { std: "docker" "inspect" "85396a27a9e5f634dc5c19ea953f00afbaaa7c8e9022805c829f8bd1bff73176", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "85396a27a9e5f634dc5c19ea953f00afbaaa7c8e9022805c829f8bd1bff73176", kill_on_drop: false }` [INFO] [stdout] 85396a27a9e5f634dc5c19ea953f00afbaaa7c8e9022805c829f8bd1bff73176 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 085219c0f0df63677e363b3375b893dfc996d5b0f16f46fd66abae816f8fbe7f [INFO] running `Command { std: "docker" "start" "-a" "085219c0f0df63677e363b3375b893dfc996d5b0f16f46fd66abae816f8fbe7f", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stdout] [INFO] [stderr] warning: unused variable: `c` [INFO] [stdout] running 0 tests [INFO] [stderr] --> src/main.rs:52:9 [INFO] [stdout] [INFO] [stderr] | [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stderr] 52 | let c = &mut a; [INFO] [stdout] [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `d` [INFO] [stderr] --> src/main.rs:53:9 [INFO] [stderr] | [INFO] [stderr] 53 | let d = &b; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_d` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `a` [INFO] [stderr] --> src/main.rs:61:25 [INFO] [stderr] | [INFO] [stderr] 61 | fn own_and_borrow_stuff(a: &mut String, b: &bool, c: u8) {} [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `b` [INFO] [stderr] --> src/main.rs:61:41 [INFO] [stderr] | [INFO] [stderr] 61 | fn own_and_borrow_stuff(a: &mut String, b: &bool, c: u8) {} [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `c` [INFO] [stderr] --> src/main.rs:61:51 [INFO] [stderr] | [INFO] [stderr] 61 | fn own_and_borrow_stuff(a: &mut String, b: &bool, c: u8) {} [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stderr] [INFO] [stderr] warning: `ownership` (bin "ownership" test) generated 5 warnings [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.11s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/ownership-9897b59f1ce90ebb) [INFO] running `Command { std: "docker" "inspect" "085219c0f0df63677e363b3375b893dfc996d5b0f16f46fd66abae816f8fbe7f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "085219c0f0df63677e363b3375b893dfc996d5b0f16f46fd66abae816f8fbe7f", kill_on_drop: false }` [INFO] [stdout] 085219c0f0df63677e363b3375b893dfc996d5b0f16f46fd66abae816f8fbe7f