[INFO] updating cached repository prewk/next_version
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/prewk/next_version
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/prewk/next_version" "work/ex/beta-1.38-1/sources/1.37.0/gh/prewk/next_version"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/prewk/next_version'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/prewk/next_version" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/prewk/next_version"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/prewk/next_version'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 705c6ba0ea0d88e06a724f1221a947f574e0e039
[INFO] sha for GitHub repo prewk/next_version: 705c6ba0ea0d88e06a724f1221a947f574e0e039
[INFO] validating manifest of prewk/next_version 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 prewk/next_version 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 prewk/next_version
[INFO] finished frobbing prewk/next_version
[INFO] frobbed toml for prewk/next_version written to work/ex/beta-1.38-1/sources/1.37.0/gh/prewk/next_version/Cargo.toml
[INFO] started frobbing prewk/next_version
[INFO] finished frobbing prewk/next_version
[INFO] frobbed toml for prewk/next_version written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/prewk/next_version/Cargo.toml
[INFO] crate prewk/next_version 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 prewk/next_version 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-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/prewk/next_version:/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] 02d72225a52b31a7de7ddb6800c369f9c95f9fccea726aff5bd76b720b5d13a9
[INFO] running `"docker" "start" "-a" "02d72225a52b31a7de7ddb6800c369f9c95f9fccea726aff5bd76b720b5d13a9"`
[INFO] [stderr]    Compiling gcc v0.3.51
[INFO] [stderr]    Compiling libc v0.2.26
[INFO] [stderr]    Compiling openssl-probe v0.1.1
[INFO] [stderr]    Compiling unicode-segmentation v1.1.0
[INFO] [stderr]    Compiling semver v0.7.0
[INFO] [stderr]    Compiling term_size v0.3.0
[INFO] [stderr]    Compiling atty v0.2.2
[INFO] [stderr]    Compiling textwrap v0.6.0
[INFO] [stderr]    Compiling libz-sys v1.0.16
[INFO] [stderr]    Compiling cmake v0.1.24
[INFO] [stderr]    Compiling openssl-sys v0.9.15
[INFO] [stderr]    Compiling curl-sys v0.3.14
[INFO] [stderr]    Compiling clap v2.25.1
[INFO] [stderr]    Compiling libssh2-sys v0.2.6
[INFO] [stderr]    Compiling libgit2-sys v0.6.12
[INFO] [stderr]    Compiling git2 v0.6.6
[INFO] [stderr]    Compiling next_version v0.2.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3m 48s
[INFO] running `"docker" "inspect" "02d72225a52b31a7de7ddb6800c369f9c95f9fccea726aff5bd76b720b5d13a9"`
[INFO] running `"docker" "rm" "-f" "02d72225a52b31a7de7ddb6800c369f9c95f9fccea726aff5bd76b720b5d13a9"`
[INFO] [stdout] 02d72225a52b31a7de7ddb6800c369f9c95f9fccea726aff5bd76b720b5d13a9
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/prewk/next_version:/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] 19bf23a8e1aab4eb655138a6db1589226ca28ae3dcac5a9dc35ee77b53ae8c21
[INFO] running `"docker" "start" "-a" "19bf23a8e1aab4eb655138a6db1589226ca28ae3dcac5a9dc35ee77b53ae8c21"`
[INFO] [stderr]    Compiling next_version v0.2.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.23s
[INFO] running `"docker" "inspect" "19bf23a8e1aab4eb655138a6db1589226ca28ae3dcac5a9dc35ee77b53ae8c21"`
[INFO] running `"docker" "rm" "-f" "19bf23a8e1aab4eb655138a6db1589226ca28ae3dcac5a9dc35ee77b53ae8c21"`
[INFO] [stdout] 19bf23a8e1aab4eb655138a6db1589226ca28ae3dcac5a9dc35ee77b53ae8c21
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/prewk/next_version:/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] e3fdf46bf15cd1bb04c5d42986708c0b562e38e9f67261bba53e41ed9578fac2
[INFO] running `"docker" "start" "-a" "e3fdf46bf15cd1bb04c5d42986708c0b562e38e9f67261bba53e41ed9578fac2"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/next_version-f72ffe63eb59bb5f
[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" "e3fdf46bf15cd1bb04c5d42986708c0b562e38e9f67261bba53e41ed9578fac2"`
[INFO] running `"docker" "rm" "-f" "e3fdf46bf15cd1bb04c5d42986708c0b562e38e9f67261bba53e41ed9578fac2"`
[INFO] [stdout] e3fdf46bf15cd1bb04c5d42986708c0b562e38e9f67261bba53e41ed9578fac2