[INFO] cloning repository https://github.com/ryucoder/adventures_in_rust_language
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ryucoder/adventures_in_rust_language" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fryucoder%2Fadventures_in_rust_language", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fryucoder%2Fadventures_in_rust_language'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 909e84b81c92a0bd5fee93665fbe33e41af06600
[INFO] testing ryucoder/adventures_in_rust_language against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fryucoder%2Fadventures_in_rust_language" "/workspace/builds/worker-21/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-21/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ryucoder/adventures_in_rust_language on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ryucoder/adventures_in_rust_language
[INFO] finished tweaking git repo https://github.com/ryucoder/adventures_in_rust_language
[INFO] tweaked toml for git repo https://github.com/ryucoder/adventures_in_rust_language written to /workspace/builds/worker-21/source/Cargo.toml
[INFO] crate git repo https://github.com/ryucoder/adventures_in_rust_language already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "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-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e1f9f87eff526f7e5df255113e3a039d7bb0c77078b426828c475d81420771d9
[INFO] running `Command { std: "docker" "start" "-a" "e1f9f87eff526f7e5df255113e3a039d7bb0c77078b426828c475d81420771d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e1f9f87eff526f7e5df255113e3a039d7bb0c77078b426828c475d81420771d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1f9f87eff526f7e5df255113e3a039d7bb0c77078b426828c475d81420771d9", kill_on_drop: false }`
[INFO] [stdout] e1f9f87eff526f7e5df255113e3a039d7bb0c77078b426828c475d81420771d9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d84063a670bd2d77518d2de85171822f2aad6067189bdc321e8e5809ceb9dc91
[INFO] running `Command { std: "docker" "start" "-a" "d84063a670bd2d77518d2de85171822f2aad6067189bdc321e8e5809ceb9dc91", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> types.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let i = 1;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> types.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let f = 2.5;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> types.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let y: i64 = 234234234234;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `Command { std: "docker" "inspect" "d84063a670bd2d77518d2de85171822f2aad6067189bdc321e8e5809ceb9dc91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d84063a670bd2d77518d2de85171822f2aad6067189bdc321e8e5809ceb9dc91", kill_on_drop: false }`
[INFO] [stdout] d84063a670bd2d77518d2de85171822f2aad6067189bdc321e8e5809ceb9dc91
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 72cbfabc732c39da828a127047a38106b81f4a6e1748a7e6cfba040d6272792a
[INFO] running `Command { std: "docker" "start" "-a" "72cbfabc732c39da828a127047a38106b81f4a6e1748a7e6cfba040d6272792a", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> types.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let i = 1;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> types.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let f = 2.5;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> types.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let y: i64 = 234234234234;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.29s
[INFO] [stderr]   Executable unittests main.rs (/opt/rustwide/target/debug/deps/rust-dd803576ab748598)
[INFO] running `Command { std: "docker" "inspect" "72cbfabc732c39da828a127047a38106b81f4a6e1748a7e6cfba040d6272792a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72cbfabc732c39da828a127047a38106b81f4a6e1748a7e6cfba040d6272792a", kill_on_drop: false }`
[INFO] [stdout] 72cbfabc732c39da828a127047a38106b81f4a6e1748a7e6cfba040d6272792a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 11ed5b07dee57154e95a85434c697551646a3517d57ffea17637d72951b5a631
[INFO] running `Command { std: "docker" "start" "-a" "11ed5b07dee57154e95a85434c697551646a3517d57ffea17637d72951b5a631", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> types.rs:20:9
[INFO] [stderr]    |
[INFO] [stderr] 20 |     let i = 1;
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> types.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |     let f = 2.5;
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]   --> types.rs:24:9
[INFO] [stderr]    |
[INFO] [stderr] 24 |     let y: i64 = 234234234234;
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: `rust` (bin "rust" test) generated 3 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests main.rs (/opt/rustwide/target/debug/deps/rust-dd803576ab748598)
[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" "11ed5b07dee57154e95a85434c697551646a3517d57ffea17637d72951b5a631", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11ed5b07dee57154e95a85434c697551646a3517d57ffea17637d72951b5a631", kill_on_drop: false }`
[INFO] [stdout] 11ed5b07dee57154e95a85434c697551646a3517d57ffea17637d72951b5a631