[INFO] updating cached repository Kerollmops/linear-regression
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Kerollmops/linear-regression
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Kerollmops/linear-regression" "work/ex/beta-1.38-1/sources/1.37.0/gh/Kerollmops/linear-regression"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Kerollmops/linear-regression'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Kerollmops/linear-regression" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Kerollmops/linear-regression"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Kerollmops/linear-regression'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d60cb04b6275682cfedf6833698a2c20cfb7e69f
[INFO] sha for GitHub repo Kerollmops/linear-regression: d60cb04b6275682cfedf6833698a2c20cfb7e69f
[INFO] validating manifest of Kerollmops/linear-regression on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Kerollmops/linear-regression on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Kerollmops/linear-regression
[INFO] finished frobbing Kerollmops/linear-regression
[INFO] frobbed toml for Kerollmops/linear-regression written to work/ex/beta-1.38-1/sources/1.37.0/gh/Kerollmops/linear-regression/Cargo.toml
[INFO] started frobbing Kerollmops/linear-regression
[INFO] finished frobbing Kerollmops/linear-regression
[INFO] frobbed toml for Kerollmops/linear-regression written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Kerollmops/linear-regression/Cargo.toml
[INFO] crate Kerollmops/linear-regression already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Kerollmops/linear-regression/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing Kerollmops/linear-regression against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Kerollmops/linear-regression:/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-2019-08-13" "build" "--frozen"`
[INFO] [stdout] d16c872d5ec5ff9cecc1b658fbebc21c741308e1289a6758409ce0dcaf629cda
[INFO] running `"docker" "start" "-a" "d16c872d5ec5ff9cecc1b658fbebc21c741308e1289a6758409ce0dcaf629cda"`
[INFO] [stderr]    Compiling gnuplot v0.0.18
[INFO] [stderr]    Compiling csv v0.14.7
[INFO] [stderr] error: enum is private and its variants cannot be re-exported
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/gnuplot-0.0.18/src/axes_common.rs:15:9
[INFO] [stderr]     |
[INFO] [stderr] 15  | pub use self::DataSourceType::*;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 529 | enum DataSourceType
[INFO] [stderr]     | ------------------- help: consider making the enum public: `pub enum DataSourceType`
[INFO] [stderr] 
[INFO] [stderr] error: enum is private and its variants cannot be re-exported
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/gnuplot-0.0.18/src/figure.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub use self::AxesVariant::*;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 16 | 
[INFO] [stderr] 17 | enum AxesVariant
[INFO] [stderr]    | ---------------- help: consider making the enum public: `pub enum AxesVariant`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `gnuplot`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "d16c872d5ec5ff9cecc1b658fbebc21c741308e1289a6758409ce0dcaf629cda"`
[INFO] running `"docker" "rm" "-f" "d16c872d5ec5ff9cecc1b658fbebc21c741308e1289a6758409ce0dcaf629cda"`
[INFO] [stdout] d16c872d5ec5ff9cecc1b658fbebc21c741308e1289a6758409ce0dcaf629cda