[INFO] cloning repository https://github.com/keeslinp/decision_tree
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/keeslinp/decision_tree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkeeslinp%2Fdecision_tree", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkeeslinp%2Fdecision_tree'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4b4d8633cf8d7560525c874ade61eb67b1e8e651
[INFO] testing keeslinp/decision_tree against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkeeslinp%2Fdecision_tree" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/keeslinp/decision_tree on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/keeslinp/decision_tree
[INFO] finished tweaking git repo https://github.com/keeslinp/decision_tree
[INFO] tweaked toml for git repo https://github.com/keeslinp/decision_tree written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/keeslinp/decision_tree already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "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-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 24b5df5c768d05d3341c9e12c073f7948195e71a9a5bd1bb6895d328c2c588d9
[INFO] running `Command { std: "docker" "start" "-a" "24b5df5c768d05d3341c9e12c073f7948195e71a9a5bd1bb6895d328c2c588d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "24b5df5c768d05d3341c9e12c073f7948195e71a9a5bd1bb6895d328c2c588d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24b5df5c768d05d3341c9e12c073f7948195e71a9a5bd1bb6895d328c2c588d9", kill_on_drop: false }`
[INFO] [stdout] 24b5df5c768d05d3341c9e12c073f7948195e71a9a5bd1bb6895d328c2c588d9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 601838b1ae0d40e4d985b6a96191a4646c380115632056f7aeedefbdf30f9b26
[INFO] running `Command { std: "docker" "start" "-a" "601838b1ae0d40e4d985b6a96191a4646c380115632056f7aeedefbdf30f9b26", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.49
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]    Compiling lazy_static v1.3.0
[INFO] [stderr]    Compiling regex v1.1.2
[INFO] [stderr]    Compiling either v1.5.1
[INFO] [stderr]    Compiling regex-syntax v0.6.5
[INFO] [stderr]    Compiling itertools v0.8.0
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling aho-corasick v0.6.10
[INFO] [stderr]    Compiling rand_os v0.1.2
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling clap v2.32.0
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling decision_tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `test_accuracy`
[INFO] [stdout]    --> src/decision.rs:146:17
[INFO] [stdout]     |
[INFO] [stdout] 146 |             let test_accuracy = self.test_set(training);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_test_accuracy`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `count_pruned_nodes`
[INFO] [stdout]    --> src/decision.rs:288:12
[INFO] [stdout]     |
[INFO] [stdout] 288 |     pub fn count_pruned_nodes(&self) -> usize {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.00s
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "601838b1ae0d40e4d985b6a96191a4646c380115632056f7aeedefbdf30f9b26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "601838b1ae0d40e4d985b6a96191a4646c380115632056f7aeedefbdf30f9b26", kill_on_drop: false }`
[INFO] [stdout] 601838b1ae0d40e4d985b6a96191a4646c380115632056f7aeedefbdf30f9b26
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 51ddef35a9c9e386c3511f9a73a0832fe9e444ef5ddf15fef14dcdb9c6040749
[INFO] running `Command { std: "docker" "start" "-a" "51ddef35a9c9e386c3511f9a73a0832fe9e444ef5ddf15fef14dcdb9c6040749", kill_on_drop: false }`
[INFO] [stderr]    Compiling decision_tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `test_accuracy`
[INFO] [stdout]    --> src/decision.rs:146:17
[INFO] [stdout]     |
[INFO] [stdout] 146 |             let test_accuracy = self.test_set(training);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_test_accuracy`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `count_pruned_nodes`
[INFO] [stdout]    --> src/decision.rs:288:12
[INFO] [stdout]     |
[INFO] [stdout] 288 |     pub fn count_pruned_nodes(&self) -> usize {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `Command { std: "docker" "inspect" "51ddef35a9c9e386c3511f9a73a0832fe9e444ef5ddf15fef14dcdb9c6040749", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51ddef35a9c9e386c3511f9a73a0832fe9e444ef5ddf15fef14dcdb9c6040749", kill_on_drop: false }`
[INFO] [stdout] 51ddef35a9c9e386c3511f9a73a0832fe9e444ef5ddf15fef14dcdb9c6040749
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 73bc456ce0d95eaa07827e9b06e7fa0be63dea5880a767696a9a1ecb117adaca
[INFO] running `Command { std: "docker" "start" "-a" "73bc456ce0d95eaa07827e9b06e7fa0be63dea5880a767696a9a1ecb117adaca", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `test_accuracy`
[INFO] [stderr]    --> src/decision.rs:146:17
[INFO] [stderr]     |
[INFO] [stderr] 146 |             let test_accuracy = self.test_set(training);
[INFO] [stderr]     |                 ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_test_accuracy`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `count_pruned_nodes`
[INFO] [stderr]    --> src/decision.rs:288:12
[INFO] [stderr]     |
[INFO] [stderr] 288 |     pub fn count_pruned_nodes(&self) -> usize {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `decision_tree` (bin "decision_tree" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/decision_tree-ca011597c7139132)
[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" "73bc456ce0d95eaa07827e9b06e7fa0be63dea5880a767696a9a1ecb117adaca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73bc456ce0d95eaa07827e9b06e7fa0be63dea5880a767696a9a1ecb117adaca", kill_on_drop: false }`
[INFO] [stdout] 73bc456ce0d95eaa07827e9b06e7fa0be63dea5880a767696a9a1ecb117adaca