[INFO] cloning repository https://github.com/Abdulkader-Safi/learn_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Abdulkader-Safi/learn_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAbdulkader-Safi%2Flearn_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAbdulkader-Safi%2Flearn_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b9f71e752fc995155055b69bd321d99cc8129d2a
[INFO] testing Abdulkader-Safi/learn_rust against master#733b47ea4b1b86216f14ef56e49440c33933f230+rustflags=-Copt-level=3 for pr-138759
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAbdulkader-Safi%2Flearn_rust" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Abdulkader-Safi/learn_rust
[INFO] finished tweaking git repo https://github.com/Abdulkader-Safi/learn_rust
[INFO] tweaked toml for git repo https://github.com/Abdulkader-Safi/learn_rust written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Abdulkader-Safi/learn_rust on toolchain 733b47ea4b1b86216f14ef56e49440c33933f230
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Abdulkader-Safi/learn_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0888b1ce7980992210d6e767b77906548ca56d5cd8c9ac391015e2c43aaa6b68
[INFO] running `Command { std: "docker" "start" "-a" "0888b1ce7980992210d6e767b77906548ca56d5cd8c9ac391015e2c43aaa6b68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0888b1ce7980992210d6e767b77906548ca56d5cd8c9ac391015e2c43aaa6b68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0888b1ce7980992210d6e767b77906548ca56d5cd8c9ac391015e2c43aaa6b68", kill_on_drop: false }`
[INFO] [stdout] 0888b1ce7980992210d6e767b77906548ca56d5cd8c9ac391015e2c43aaa6b68
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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=forbid -Copt-level=3" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 52137375b8d8eb9e7d5d17bc7fb09d4afe367ee62e04892f0987f6312d3e5b27
[INFO] running `Command { std: "docker" "start" "-a" "52137375b8d8eb9e7d5d17bc7fb09d4afe367ee62e04892f0987f6312d3e5b27", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_sandbox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]  --> src/owner_ship.rs:9:13
[INFO] [stdout]   |
[INFO] [stdout] 9 |         let s = String::from("hello"); // s is valid from this point forward
[INFO] [stdout]   |             ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `get_ownership`
[INFO] [stdout]   --> src/owner_ship.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let get_ownership = gives_ownership();
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_get_ownership`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `take_and_get_ownership`
[INFO] [stdout]   --> src/owner_ship.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let take_and_get_ownership = takes_and_gives_back(String::from("HEllloooo"));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_take_and_get_ownership`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/owner_ship.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let y: i32 = x; // Copy
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.64s
[INFO] running `Command { std: "docker" "inspect" "52137375b8d8eb9e7d5d17bc7fb09d4afe367ee62e04892f0987f6312d3e5b27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52137375b8d8eb9e7d5d17bc7fb09d4afe367ee62e04892f0987f6312d3e5b27", kill_on_drop: false }`
[INFO] [stdout] 52137375b8d8eb9e7d5d17bc7fb09d4afe367ee62e04892f0987f6312d3e5b27
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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=forbid -Copt-level=3" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 579ce0a8bc1bfd936f653baf7d10b953a7a16c4bff0e873f6a90fc7420149ed2
[INFO] running `Command { std: "docker" "start" "-a" "579ce0a8bc1bfd936f653baf7d10b953a7a16c4bff0e873f6a90fc7420149ed2", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_sandbox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]  --> src/owner_ship.rs:9:13
[INFO] [stdout]   |
[INFO] [stdout] 9 |         let s = String::from("hello"); // s is valid from this point forward
[INFO] [stdout]   |             ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `get_ownership`
[INFO] [stdout]   --> src/owner_ship.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let get_ownership = gives_ownership();
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_get_ownership`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `take_and_get_ownership`
[INFO] [stdout]   --> src/owner_ship.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let take_and_get_ownership = takes_and_gives_back(String::from("HEllloooo"));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_take_and_get_ownership`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/owner_ship.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let y: i32 = x; // Copy
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `Command { std: "docker" "inspect" "579ce0a8bc1bfd936f653baf7d10b953a7a16c4bff0e873f6a90fc7420149ed2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "579ce0a8bc1bfd936f653baf7d10b953a7a16c4bff0e873f6a90fc7420149ed2", kill_on_drop: false }`
[INFO] [stdout] 579ce0a8bc1bfd936f653baf7d10b953a7a16c4bff0e873f6a90fc7420149ed2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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=forbid -Copt-level=3" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7d5fba8a1e883a208c174ef7ff104bf95cac6b6d92cd5731f223ff5b82fab4ec
[INFO] running `Command { std: "docker" "start" "-a" "7d5fba8a1e883a208c174ef7ff104bf95cac6b6d92cd5731f223ff5b82fab4ec", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]  --> src/owner_ship.rs:9:13
[INFO] [stderr]   |
[INFO] [stderr] 9 |         let s = String::from("hello"); // s is valid from this point forward
[INFO] [stderr]   |             ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `get_ownership`
[INFO] [stderr]   --> src/owner_ship.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let get_ownership = gives_ownership();
[INFO] [stderr]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_get_ownership`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `take_and_get_ownership`
[INFO] [stderr]   --> src/owner_ship.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |     let take_and_get_ownership = takes_and_gives_back(String::from("HEllloooo"));
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_take_and_get_ownership`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]   --> src/owner_ship.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |     let y: i32 = x; // Copy
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: `rust_sandbox` (bin "rust_sandbox" test) generated 4 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_sandbox-32e7be7a19951f47)
[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" "7d5fba8a1e883a208c174ef7ff104bf95cac6b6d92cd5731f223ff5b82fab4ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d5fba8a1e883a208c174ef7ff104bf95cac6b6d92cd5731f223ff5b82fab4ec", kill_on_drop: false }`
[INFO] [stdout] 7d5fba8a1e883a208c174ef7ff104bf95cac6b6d92cd5731f223ff5b82fab4ec
