[INFO] updating cached repository TechThrust/Rust-Simple-Linear-Regression
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/TechThrust/Rust-Simple-Linear-Regression
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/TechThrust/Rust-Simple-Linear-Regression" "work/ex/beta-1.38-1/sources/1.37.0/gh/TechThrust/Rust-Simple-Linear-Regression"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/TechThrust/Rust-Simple-Linear-Regression'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/TechThrust/Rust-Simple-Linear-Regression" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/TechThrust/Rust-Simple-Linear-Regression"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/TechThrust/Rust-Simple-Linear-Regression'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 56797a588d47cf07e9fc430fb96e5e3fb356fc06
[INFO] sha for GitHub repo TechThrust/Rust-Simple-Linear-Regression: 56797a588d47cf07e9fc430fb96e5e3fb356fc06
[INFO] validating manifest of TechThrust/Rust-Simple-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 TechThrust/Rust-Simple-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 TechThrust/Rust-Simple-Linear-Regression
[INFO] finished frobbing TechThrust/Rust-Simple-Linear-Regression
[INFO] frobbed toml for TechThrust/Rust-Simple-Linear-Regression written to work/ex/beta-1.38-1/sources/1.37.0/gh/TechThrust/Rust-Simple-Linear-Regression/Cargo.toml
[INFO] started frobbing TechThrust/Rust-Simple-Linear-Regression
[INFO] finished frobbing TechThrust/Rust-Simple-Linear-Regression
[INFO] frobbed toml for TechThrust/Rust-Simple-Linear-Regression written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/TechThrust/Rust-Simple-Linear-Regression/Cargo.toml
[INFO] crate TechThrust/Rust-Simple-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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing TechThrust/Rust-Simple-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-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/TechThrust/Rust-Simple-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] 5b7a757d01cfd98ac4ab38f92c4be3e785b2bbb7031be81d4f8714f4a12e27fb
[INFO] running `"docker" "start" "-a" "5b7a757d01cfd98ac4ab38f92c4be3e785b2bbb7031be81d4f8714f4a12e27fb"`
[INFO] [stderr]    Compiling simple_regression v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.21s
[INFO] running `"docker" "inspect" "5b7a757d01cfd98ac4ab38f92c4be3e785b2bbb7031be81d4f8714f4a12e27fb"`
[INFO] running `"docker" "rm" "-f" "5b7a757d01cfd98ac4ab38f92c4be3e785b2bbb7031be81d4f8714f4a12e27fb"`
[INFO] [stdout] 5b7a757d01cfd98ac4ab38f92c4be3e785b2bbb7031be81d4f8714f4a12e27fb
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/TechThrust/Rust-Simple-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] fb4028f76d61aac6513419f8c3b63371f3810b8c24f0586beff71cd45d3d24d8
[INFO] running `"docker" "start" "-a" "fb4028f76d61aac6513419f8c3b63371f3810b8c24f0586beff71cd45d3d24d8"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling simple_regression v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `"docker" "inspect" "fb4028f76d61aac6513419f8c3b63371f3810b8c24f0586beff71cd45d3d24d8"`
[INFO] running `"docker" "rm" "-f" "fb4028f76d61aac6513419f8c3b63371f3810b8c24f0586beff71cd45d3d24d8"`
[INFO] [stdout] fb4028f76d61aac6513419f8c3b63371f3810b8c24f0586beff71cd45d3d24d8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/TechThrust/Rust-Simple-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] 06d76b7e1b0c8d5c2ffa9a11036b9f68c0299c996ed0b637ef92497e5e34b1d5
[INFO] running `"docker" "start" "-a" "06d76b7e1b0c8d5c2ffa9a11036b9f68c0299c996ed0b637ef92497e5e34b1d5"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/simple_regression-05c87e21dad08023
[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" "06d76b7e1b0c8d5c2ffa9a11036b9f68c0299c996ed0b637ef92497e5e34b1d5"`
[INFO] running `"docker" "rm" "-f" "06d76b7e1b0c8d5c2ffa9a11036b9f68c0299c996ed0b637ef92497e5e34b1d5"`
[INFO] [stdout] 06d76b7e1b0c8d5c2ffa9a11036b9f68c0299c996ed0b637ef92497e5e34b1d5