[INFO] cloning repository https://github.com/willmurphyscode/simple-rust-tree
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/willmurphyscode/simple-rust-tree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwillmurphyscode%2Fsimple-rust-tree", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwillmurphyscode%2Fsimple-rust-tree'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9fed11bd29057459ead0b54458541ad1302e25c7
[INFO] testing willmurphyscode/simple-rust-tree 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%2Fwillmurphyscode%2Fsimple-rust-tree" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/willmurphyscode/simple-rust-tree 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/willmurphyscode/simple-rust-tree
[INFO] finished tweaking git repo https://github.com/willmurphyscode/simple-rust-tree
[INFO] tweaked toml for git repo https://github.com/willmurphyscode/simple-rust-tree written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/willmurphyscode/simple-rust-tree 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 34bab271af752a80343b1e15d56c028a0594554fe8b53fd689bb9937e2d76e60
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "34bab271af752a80343b1e15d56c028a0594554fe8b53fd689bb9937e2d76e60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "34bab271af752a80343b1e15d56c028a0594554fe8b53fd689bb9937e2d76e60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34bab271af752a80343b1e15d56c028a0594554fe8b53fd689bb9937e2d76e60", kill_on_drop: false }`
[INFO] [stdout] 34bab271af752a80343b1e15d56c028a0594554fe8b53fd689bb9937e2d76e60
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] d0439f7108e4e20cc39b08f8fb3d74c62e3935e3426536903c4eaf51a8caff80
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d0439f7108e4e20cc39b08f8fb3d74c62e3935e3426536903c4eaf51a8caff80", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.24
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]    Compiling tree_walker v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/main.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 | /             (our_fruit + recursive_count_fruit(unboxed.left_child) +
[INFO] [stdout] 13 | |                  recursive_count_fruit(unboxed.right_child))
[INFO] [stdout]    | |____________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 12 ~             our_fruit + recursive_count_fruit(unboxed.left_child) +
[INFO] [stdout] 13 +                  recursive_count_fruit(unboxed.right_child)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.27s
[INFO] running `Command { std: "docker" "inspect" "d0439f7108e4e20cc39b08f8fb3d74c62e3935e3426536903c4eaf51a8caff80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0439f7108e4e20cc39b08f8fb3d74c62e3935e3426536903c4eaf51a8caff80", kill_on_drop: false }`
[INFO] [stdout] d0439f7108e4e20cc39b08f8fb3d74c62e3935e3426536903c4eaf51a8caff80
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 61a64135d6afe0931a09051ea982726e7d0afeca03c3efe6e6c0ec549dfe4195
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "61a64135d6afe0931a09051ea982726e7d0afeca03c3efe6e6c0ec549dfe4195", kill_on_drop: false }`
[INFO] [stderr]    Compiling tree_walker v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/main.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 | /             (our_fruit + recursive_count_fruit(unboxed.left_child) +
[INFO] [stdout] 13 | |                  recursive_count_fruit(unboxed.right_child))
[INFO] [stdout]    | |____________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 12 ~             our_fruit + recursive_count_fruit(unboxed.left_child) +
[INFO] [stdout] 13 +                  recursive_count_fruit(unboxed.right_child)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.90s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "61a64135d6afe0931a09051ea982726e7d0afeca03c3efe6e6c0ec549dfe4195", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61a64135d6afe0931a09051ea982726e7d0afeca03c3efe6e6c0ec549dfe4195", kill_on_drop: false }`
[INFO] [stdout] 61a64135d6afe0931a09051ea982726e7d0afeca03c3efe6e6c0ec549dfe4195
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 7755d91dc5e5f5aaba11402e7b4ab1fd0fb8cd274bc87c15837848e7dab211ff
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "7755d91dc5e5f5aaba11402e7b4ab1fd0fb8cd274bc87c15837848e7dab211ff", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]   --> src/main.rs:12:13
[INFO] [stderr]    |
[INFO] [stderr] 12 | /             (our_fruit + recursive_count_fruit(unboxed.left_child) +
[INFO] [stderr] 13 | |                  recursive_count_fruit(unboxed.right_child))
[INFO] [stderr]    | |____________________________________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 12 ~             our_fruit + recursive_count_fruit(unboxed.left_child) +
[INFO] [stderr] 13 +                  recursive_count_fruit(unboxed.right_child)
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: `tree_walker` (bin "tree_walker" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/tree_walker-c408a133ac9c5404)
[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" "7755d91dc5e5f5aaba11402e7b4ab1fd0fb8cd274bc87c15837848e7dab211ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7755d91dc5e5f5aaba11402e7b4ab1fd0fb8cd274bc87c15837848e7dab211ff", kill_on_drop: false }`
[INFO] [stdout] 7755d91dc5e5f5aaba11402e7b4ab1fd0fb8cd274bc87c15837848e7dab211ff