[INFO] updating cached repository https://github.com/keeslinp/decision_tree
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4b4d8633cf8d7560525c874ade61eb67b1e8e651
[INFO] testing keeslinp/decision_tree against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkeeslinp%2Fdecision_tree" "work/builds/worker-6/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/keeslinp/decision_tree on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[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 work/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/keeslinp/decision_tree already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] 63539363f8f669dba9bba424ac36de45776e0f87af76d8effa5c768fa998c2c6
[INFO] running `"docker" "start" "-a" "63539363f8f669dba9bba424ac36de45776e0f87af76d8effa5c768fa998c2c6"`
[INFO] [stderr]    Compiling itertools v0.8.0
[INFO] [stderr]    Compiling decision_tree v0.1.0 (/opt/rustwide/workdir)
[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: consider prefixing with an underscore: `_test_accuracy`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `count_pruned_nodes`
[INFO] [stderr]    --> src/decision.rs:288:5
[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]     Finished dev [unoptimized + debuginfo] target(s) in 11.60s
[INFO] running `"docker" "inspect" "63539363f8f669dba9bba424ac36de45776e0f87af76d8effa5c768fa998c2c6"`
[INFO] running `"docker" "rm" "-f" "63539363f8f669dba9bba424ac36de45776e0f87af76d8effa5c768fa998c2c6"`
[INFO] [stdout] 63539363f8f669dba9bba424ac36de45776e0f87af76d8effa5c768fa998c2c6
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen" "--no-run"`
[INFO] [stdout] 19aa2bf379eb7b9039e95a6a051582d7b902fb073769703027bb729d0520fede
[INFO] running `"docker" "start" "-a" "19aa2bf379eb7b9039e95a6a051582d7b902fb073769703027bb729d0520fede"`
[INFO] [stderr]    Compiling decision_tree v0.1.0 (/opt/rustwide/workdir)
[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: consider prefixing with an underscore: `_test_accuracy`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `count_pruned_nodes`
[INFO] [stderr]    --> src/decision.rs:288:5
[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]     Finished dev [unoptimized + debuginfo] target(s) in 4.89s
[INFO] running `"docker" "inspect" "19aa2bf379eb7b9039e95a6a051582d7b902fb073769703027bb729d0520fede"`
[INFO] running `"docker" "rm" "-f" "19aa2bf379eb7b9039e95a6a051582d7b902fb073769703027bb729d0520fede"`
[INFO] [stdout] 19aa2bf379eb7b9039e95a6a051582d7b902fb073769703027bb729d0520fede
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen"`
[INFO] [stdout] 327e7d87678d82cd74a05d402ea7e749479ccae2cc1524712984f15e2f626f93
[INFO] running `"docker" "start" "-a" "327e7d87678d82cd74a05d402ea7e749479ccae2cc1524712984f15e2f626f93"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.24s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/decision_tree-4b030a984cd8c649
[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
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "327e7d87678d82cd74a05d402ea7e749479ccae2cc1524712984f15e2f626f93"`
[INFO] running `"docker" "rm" "-f" "327e7d87678d82cd74a05d402ea7e749479ccae2cc1524712984f15e2f626f93"`
[INFO] [stdout] 327e7d87678d82cd74a05d402ea7e749479ccae2cc1524712984f15e2f626f93