[INFO] updating cached repository jimberlage/digit_recognizer
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jimberlage/digit_recognizer
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jimberlage/digit_recognizer" "work/ex/beta-1.38-1/sources/1.37.0/gh/jimberlage/digit_recognizer"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/jimberlage/digit_recognizer'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jimberlage/digit_recognizer" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jimberlage/digit_recognizer"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jimberlage/digit_recognizer'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e8967a6ddb7543da825f3b477c22e90b14b06acd
[INFO] sha for GitHub repo jimberlage/digit_recognizer: e8967a6ddb7543da825f3b477c22e90b14b06acd
[INFO] validating manifest of jimberlage/digit_recognizer 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 jimberlage/digit_recognizer 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 jimberlage/digit_recognizer
[INFO] finished frobbing jimberlage/digit_recognizer
[INFO] frobbed toml for jimberlage/digit_recognizer written to work/ex/beta-1.38-1/sources/1.37.0/gh/jimberlage/digit_recognizer/Cargo.toml
[INFO] started frobbing jimberlage/digit_recognizer
[INFO] finished frobbing jimberlage/digit_recognizer
[INFO] frobbed toml for jimberlage/digit_recognizer written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jimberlage/digit_recognizer/Cargo.toml
[INFO] crate jimberlage/digit_recognizer 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/jimberlage/digit_recognizer/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[INFO] the lockfile is outdated, regenerating it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 jimberlage/digit_recognizer 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-0/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/jimberlage/digit_recognizer:/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] bc77767c294f1ef132fdba6f65d3097f56d747480194cb43f31f0962afce6784
[INFO] running `"docker" "start" "-a" "bc77767c294f1ef132fdba6f65d3097f56d747480194cb43f31f0962afce6784"`
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling num-bigint v0.2.2
[INFO] [stderr]    Compiling num v0.2.0
[INFO] [stderr]    Compiling digit_recognizer v0.0.5 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.30s
[INFO] running `"docker" "inspect" "bc77767c294f1ef132fdba6f65d3097f56d747480194cb43f31f0962afce6784"`
[INFO] running `"docker" "rm" "-f" "bc77767c294f1ef132fdba6f65d3097f56d747480194cb43f31f0962afce6784"`
[INFO] [stdout] bc77767c294f1ef132fdba6f65d3097f56d747480194cb43f31f0962afce6784
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/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/jimberlage/digit_recognizer:/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" "test" "--frozen" "--no-run"`
[INFO] [stdout] 779bc1aeed66ce42cdbfb62d4e5d434be75dc7eee0ca63e4796fda526016b321
[INFO] running `"docker" "start" "-a" "779bc1aeed66ce42cdbfb62d4e5d434be75dc7eee0ca63e4796fda526016b321"`
[INFO] [stderr]    Compiling digit_recognizer v0.0.5 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.71s
[INFO] running `"docker" "inspect" "779bc1aeed66ce42cdbfb62d4e5d434be75dc7eee0ca63e4796fda526016b321"`
[INFO] running `"docker" "rm" "-f" "779bc1aeed66ce42cdbfb62d4e5d434be75dc7eee0ca63e4796fda526016b321"`
[INFO] [stdout] 779bc1aeed66ce42cdbfb62d4e5d434be75dc7eee0ca63e4796fda526016b321
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/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/jimberlage/digit_recognizer:/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" "test" "--frozen"`
[INFO] [stdout] cff00b2643741c115912227134d4a3acce0f09f31a8c90dd41b4785f64298fb7
[INFO] running `"docker" "start" "-a" "cff00b2643741c115912227134d4a3acce0f09f31a8c90dd41b4785f64298fb7"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/digit_recognizer-28f30862139c25dd
[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" "cff00b2643741c115912227134d4a3acce0f09f31a8c90dd41b4785f64298fb7"`
[INFO] running `"docker" "rm" "-f" "cff00b2643741c115912227134d4a3acce0f09f31a8c90dd41b4785f64298fb7"`
[INFO] [stdout] cff00b2643741c115912227134d4a3acce0f09f31a8c90dd41b4785f64298fb7