[INFO] crate decision_tree 0.1.0 is already in cache
[INFO] extracting crate decision_tree 0.1.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/decision_tree/0.1.0
[INFO] extracting crate decision_tree 0.1.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/decision_tree/0.1.0
[INFO] validating manifest of decision_tree-0.1.0 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of decision_tree-0.1.0 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing decision_tree-0.1.0
[INFO] finished frobbing decision_tree-0.1.0
[INFO] frobbed toml for decision_tree-0.1.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/decision_tree/0.1.0/Cargo.toml
[INFO] started frobbing decision_tree-0.1.0
[INFO] finished frobbing decision_tree-0.1.0
[INFO] frobbed toml for decision_tree-0.1.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/decision_tree/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing decision_tree-0.1.0 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/decision_tree/0.1.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 937ccc7edfdbb6fbd51116088d286c057a9f102ad132354acaceac677086d6ac
[INFO] running `"docker" "start" "-a" "937ccc7edfdbb6fbd51116088d286c057a9f102ad132354acaceac677086d6ac"`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]    Compiling decision_tree v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `"docker" "inspect" "937ccc7edfdbb6fbd51116088d286c057a9f102ad132354acaceac677086d6ac"`
[INFO] running `"docker" "rm" "-f" "937ccc7edfdbb6fbd51116088d286c057a9f102ad132354acaceac677086d6ac"`
[INFO] [stdout] 937ccc7edfdbb6fbd51116088d286c057a9f102ad132354acaceac677086d6ac
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/decision_tree/0.1.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] bf9a53fdc1034468b5bbf1e40cb848b430a115883eb71babfdc3113a5e0c5771
[INFO] running `"docker" "start" "-a" "bf9a53fdc1034468b5bbf1e40cb848b430a115883eb71babfdc3113a5e0c5771"`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]    Compiling decision_tree v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0583]: file not found for module `tree`
[INFO] [stderr]  --> examples/simple_tree.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | mod tree;
[INFO] [stderr]   |     ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: name the file either tree.rs or tree/mod.rs inside the directory "examples"
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0583`.
[INFO] [stderr] error: Could not compile `decision_tree`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "bf9a53fdc1034468b5bbf1e40cb848b430a115883eb71babfdc3113a5e0c5771"`
[INFO] running `"docker" "rm" "-f" "bf9a53fdc1034468b5bbf1e40cb848b430a115883eb71babfdc3113a5e0c5771"`
[INFO] [stdout] bf9a53fdc1034468b5bbf1e40cb848b430a115883eb71babfdc3113a5e0c5771