[INFO] updating cached repository jcdyer/gradepopper
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jcdyer/gradepopper
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jcdyer/gradepopper" "work/ex/beta-1.37-6/sources/1.36.0/gh/jcdyer/gradepopper"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/jcdyer/gradepopper'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jcdyer/gradepopper" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/jcdyer/gradepopper"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/jcdyer/gradepopper'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 781bab76d0e413357731e3678a4183b708511dcd
[INFO] sha for GitHub repo jcdyer/gradepopper: 781bab76d0e413357731e3678a4183b708511dcd
[INFO] validating manifest of jcdyer/gradepopper 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 jcdyer/gradepopper 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 jcdyer/gradepopper
[INFO] finished frobbing jcdyer/gradepopper
[INFO] frobbed toml for jcdyer/gradepopper written to work/ex/beta-1.37-6/sources/1.36.0/gh/jcdyer/gradepopper/Cargo.toml
[INFO] started frobbing jcdyer/gradepopper
[INFO] finished frobbing jcdyer/gradepopper
[INFO] frobbed toml for jcdyer/gradepopper written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/jcdyer/gradepopper/Cargo.toml
[INFO] crate jcdyer/gradepopper already has a lockfile, it will not be regenerated
[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 jcdyer/gradepopper 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-5/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/jcdyer/gradepopper:/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] 73715463346e0056b991f1894c268067ca8c804d053a15030e266f6364494cfb
[INFO] running `"docker" "start" "-a" "73715463346e0056b991f1894c268067ca8c804d053a15030e266f6364494cfb"`
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]    Compiling csv-core v0.1.5
[INFO] [stderr]    Compiling aho-corasick v0.7.3
[INFO] [stderr]    Compiling csv v1.0.7
[INFO] [stderr]    Compiling regex v1.1.6
[INFO] [stderr]    Compiling gradepopper v2.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:13:45
[INFO] [stderr]    |
[INFO] [stderr] 13 | type Result<T> = std::result::Result<T, Box<Error>>;
[INFO] [stderr]    |                                             ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.82s
[INFO] running `"docker" "inspect" "73715463346e0056b991f1894c268067ca8c804d053a15030e266f6364494cfb"`
[INFO] running `"docker" "rm" "-f" "73715463346e0056b991f1894c268067ca8c804d053a15030e266f6364494cfb"`
[INFO] [stdout] 73715463346e0056b991f1894c268067ca8c804d053a15030e266f6364494cfb
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/jcdyer/gradepopper:/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] 82fbae5aed9ad771560e1fddabe354a96a1735139c0e12b00a1713bd894e8a04
[INFO] running `"docker" "start" "-a" "82fbae5aed9ad771560e1fddabe354a96a1735139c0e12b00a1713bd894e8a04"`
[INFO] [stderr]    Compiling gradepopper v2.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:13:45
[INFO] [stderr]    |
[INFO] [stderr] 13 | type Result<T> = std::result::Result<T, Box<Error>>;
[INFO] [stderr]    |                                             ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.46s
[INFO] running `"docker" "inspect" "82fbae5aed9ad771560e1fddabe354a96a1735139c0e12b00a1713bd894e8a04"`
[INFO] running `"docker" "rm" "-f" "82fbae5aed9ad771560e1fddabe354a96a1735139c0e12b00a1713bd894e8a04"`
[INFO] [stdout] 82fbae5aed9ad771560e1fddabe354a96a1735139c0e12b00a1713bd894e8a04
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/jcdyer/gradepopper:/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"`
[INFO] [stdout] 77d0096cdaef3925f7c2ed85797ccb97ac7ed7f548a69322d0cceb71ce945831
[INFO] running `"docker" "start" "-a" "77d0096cdaef3925f7c2ed85797ccb97ac7ed7f548a69322d0cceb71ce945831"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/gradepopper-3c789d138895dd71
[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" "77d0096cdaef3925f7c2ed85797ccb97ac7ed7f548a69322d0cceb71ce945831"`
[INFO] running `"docker" "rm" "-f" "77d0096cdaef3925f7c2ed85797ccb97ac7ed7f548a69322d0cceb71ce945831"`
[INFO] [stdout] 77d0096cdaef3925f7c2ed85797ccb97ac7ed7f548a69322d0cceb71ce945831