[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-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftensor-programming%2FRust-ownership-and-borrowing" "/workspace/builds/worker-70/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-70/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tensor-programming/Rust-ownership-and-borrowing on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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-70/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-2021-09-08" "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-70/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/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" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] de712c15ea947b1cca663eab998996d207d1af45b3192d38022fef16dc222e02
[INFO] running `Command { std: "docker" "start" "-a" "de712c15ea947b1cca663eab998996d207d1af45b3192d38022fef16dc222e02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "de712c15ea947b1cca663eab998996d207d1af45b3192d38022fef16dc222e02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de712c15ea947b1cca663eab998996d207d1af45b3192d38022fef16dc222e02", kill_on_drop: false }`
[INFO] [stdout] de712c15ea947b1cca663eab998996d207d1af45b3192d38022fef16dc222e02
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/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" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6822c8cf1cb761ba0723832dfb2f888495ad4aa8e7b0aca8499c25d5690e7b50
[INFO] running `Command { std: "docker" "start" "-a" "6822c8cf1cb761ba0723832dfb2f888495ad4aa8e7b0aca8499c25d5690e7b50", 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] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.01s
[INFO] running `Command { std: "docker" "inspect" "6822c8cf1cb761ba0723832dfb2f888495ad4aa8e7b0aca8499c25d5690e7b50", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6822c8cf1cb761ba0723832dfb2f888495ad4aa8e7b0aca8499c25d5690e7b50", kill_on_drop: false }`
[INFO] [stdout] 6822c8cf1cb761ba0723832dfb2f888495ad4aa8e7b0aca8499c25d5690e7b50
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/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" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ab5764a9d8a6367325a2ffaaa8948ac8328be30f0b80e4b9d89fb6b50a6e4513
[INFO] running `Command { std: "docker" "start" "-a" "ab5764a9d8a6367325a2ffaaa8948ac8328be30f0b80e4b9d89fb6b50a6e4513", 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 0.75s
[INFO] running `Command { std: "docker" "inspect" "ab5764a9d8a6367325a2ffaaa8948ac8328be30f0b80e4b9d89fb6b50a6e4513", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab5764a9d8a6367325a2ffaaa8948ac8328be30f0b80e4b9d89fb6b50a6e4513", kill_on_drop: false }`
[INFO] [stdout] ab5764a9d8a6367325a2ffaaa8948ac8328be30f0b80e4b9d89fb6b50a6e4513
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/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" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2d1cf0ac20102fc527d3fbe1be8812842bb1375409f30e5208402b0df3986eec
[INFO] running `Command { std: "docker" "start" "-a" "2d1cf0ac20102fc527d3fbe1be8812842bb1375409f30e5208402b0df3986eec", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]   --> src/main.rs:52:9
[INFO] [stderr]    |
[INFO] [stderr] 52 |     let c = &mut a;
[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 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ownership-9897b59f1ce90ebb)
[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] running `Command { std: "docker" "inspect" "2d1cf0ac20102fc527d3fbe1be8812842bb1375409f30e5208402b0df3986eec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d1cf0ac20102fc527d3fbe1be8812842bb1375409f30e5208402b0df3986eec", kill_on_drop: false }`
[INFO] [stdout] 2d1cf0ac20102fc527d3fbe1be8812842bb1375409f30e5208402b0df3986eec