[INFO] updating cached repository lecorref/linear_regression
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/lecorref/linear_regression
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/lecorref/linear_regression" "work/ex/beta-1.38-1/sources/1.37.0/gh/lecorref/linear_regression"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/lecorref/linear_regression'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/lecorref/linear_regression" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/lecorref/linear_regression"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/lecorref/linear_regression'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b93ba93bfdabf0c34cb96a29305320003da5bda4
[INFO] sha for GitHub repo lecorref/linear_regression: b93ba93bfdabf0c34cb96a29305320003da5bda4
[INFO] validating manifest of lecorref/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 lecorref/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 lecorref/linear_regression
[INFO] finished frobbing lecorref/linear_regression
[INFO] frobbed toml for lecorref/linear_regression written to work/ex/beta-1.38-1/sources/1.37.0/gh/lecorref/linear_regression/Cargo.toml
[INFO] started frobbing lecorref/linear_regression
[INFO] finished frobbing lecorref/linear_regression
[INFO] frobbed toml for lecorref/linear_regression written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/lecorref/linear_regression/Cargo.toml
[INFO] crate lecorref/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/lecorref/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[INFO] the lockfile is outdated, regenerating it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 lecorref/linear_regression against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/lecorref/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 59420dac759811ef0b66dff58c530f292646edb964d6a5074b51734c0f7da1eb
[INFO] running `"docker" "start" "-a" "59420dac759811ef0b66dff58c530f292646edb964d6a5074b51734c0f7da1eb"`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling csv v0.14.7
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling linear_regression v0.0.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.60s
[INFO] running `"docker" "inspect" "59420dac759811ef0b66dff58c530f292646edb964d6a5074b51734c0f7da1eb"`
[INFO] running `"docker" "rm" "-f" "59420dac759811ef0b66dff58c530f292646edb964d6a5074b51734c0f7da1eb"`
[INFO] [stdout] 59420dac759811ef0b66dff58c530f292646edb964d6a5074b51734c0f7da1eb
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/lecorref/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 06e8e7dcb170c35acdee9c684f42b8ff4002b55aa90f851c58d86ec4612435d5
[INFO] running `"docker" "start" "-a" "06e8e7dcb170c35acdee9c684f42b8ff4002b55aa90f851c58d86ec4612435d5"`
[INFO] [stderr]    Compiling linear_regression v0.0.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.10s
[INFO] running `"docker" "inspect" "06e8e7dcb170c35acdee9c684f42b8ff4002b55aa90f851c58d86ec4612435d5"`
[INFO] running `"docker" "rm" "-f" "06e8e7dcb170c35acdee9c684f42b8ff4002b55aa90f851c58d86ec4612435d5"`
[INFO] [stdout] 06e8e7dcb170c35acdee9c684f42b8ff4002b55aa90f851c58d86ec4612435d5
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/lecorref/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 8a429ee824e66190de43a4bec262e38479b5f6625eb0dae6d85a2fb2b33aeb7e
[INFO] running `"docker" "start" "-a" "8a429ee824e66190de43a4bec262e38479b5f6625eb0dae6d85a2fb2b33aeb7e"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/predict-41722e70c68f82e2
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/train-733e19b1730ce6a9
[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] [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" "8a429ee824e66190de43a4bec262e38479b5f6625eb0dae6d85a2fb2b33aeb7e"`
[INFO] running `"docker" "rm" "-f" "8a429ee824e66190de43a4bec262e38479b5f6625eb0dae6d85a2fb2b33aeb7e"`
[INFO] [stdout] 8a429ee824e66190de43a4bec262e38479b5f6625eb0dae6d85a2fb2b33aeb7e