[INFO] updating cached repository data-pup/cargo-metadata-exercise
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/data-pup/cargo-metadata-exercise
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/data-pup/cargo-metadata-exercise" "work/ex/beta-1.38-1/sources/1.37.0/gh/data-pup/cargo-metadata-exercise"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/data-pup/cargo-metadata-exercise'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/data-pup/cargo-metadata-exercise" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/data-pup/cargo-metadata-exercise"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/data-pup/cargo-metadata-exercise'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 756fc3afe4e803d5bfd37de7d60ba1d616657ede
[INFO] sha for GitHub repo data-pup/cargo-metadata-exercise: 756fc3afe4e803d5bfd37de7d60ba1d616657ede
[INFO] validating manifest of data-pup/cargo-metadata-exercise 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 data-pup/cargo-metadata-exercise 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 data-pup/cargo-metadata-exercise
[INFO] finished frobbing data-pup/cargo-metadata-exercise
[INFO] frobbed toml for data-pup/cargo-metadata-exercise written to work/ex/beta-1.38-1/sources/1.37.0/gh/data-pup/cargo-metadata-exercise/Cargo.toml
[INFO] started frobbing data-pup/cargo-metadata-exercise
[INFO] finished frobbing data-pup/cargo-metadata-exercise
[INFO] frobbed toml for data-pup/cargo-metadata-exercise written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/data-pup/cargo-metadata-exercise/Cargo.toml
[INFO] crate data-pup/cargo-metadata-exercise 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 data-pup/cargo-metadata-exercise 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-4/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/data-pup/cargo-metadata-exercise:/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] af1da323adf192f1ccc8f713f8614753052a379b1fe1dff60b398db88f19d0ec
[INFO] running `"docker" "start" "-a" "af1da323adf192f1ccc8f713f8614753052a379b1fe1dff60b398db88f19d0ec"`
[INFO] [stderr]    Compiling cc v1.0.23
[INFO] [stderr]    Compiling proc-macro2 v0.4.17
[INFO] [stderr]    Compiling serde v1.0.76
[INFO] [stderr]    Compiling quote v0.6.8
[INFO] [stderr]    Compiling backtrace-sys v0.1.24
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling backtrace v0.3.9
[INFO] [stderr]    Compiling error-chain v0.12.0
[INFO] [stderr]    Compiling serde_derive v1.0.76
[INFO] [stderr]    Compiling serde_json v1.0.26
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling toml v0.4.6
[INFO] [stderr]    Compiling cargo_metadata v0.6.0
[INFO] [stderr]    Compiling cargo-metadata-ex v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 50.20s
[INFO] running `"docker" "inspect" "af1da323adf192f1ccc8f713f8614753052a379b1fe1dff60b398db88f19d0ec"`
[INFO] running `"docker" "rm" "-f" "af1da323adf192f1ccc8f713f8614753052a379b1fe1dff60b398db88f19d0ec"`
[INFO] [stdout] af1da323adf192f1ccc8f713f8614753052a379b1fe1dff60b398db88f19d0ec
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/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/data-pup/cargo-metadata-exercise:/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] 5cf51c2304f9ab71c806bd597ccbc69f5b194f74ea2d77b988026040868a1843
[INFO] running `"docker" "start" "-a" "5cf51c2304f9ab71c806bd597ccbc69f5b194f74ea2d77b988026040868a1843"`
[INFO] [stderr]    Compiling cargo-metadata-ex v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.96s
[INFO] running `"docker" "inspect" "5cf51c2304f9ab71c806bd597ccbc69f5b194f74ea2d77b988026040868a1843"`
[INFO] running `"docker" "rm" "-f" "5cf51c2304f9ab71c806bd597ccbc69f5b194f74ea2d77b988026040868a1843"`
[INFO] [stdout] 5cf51c2304f9ab71c806bd597ccbc69f5b194f74ea2d77b988026040868a1843
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/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/data-pup/cargo-metadata-exercise:/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] 972f12caa08b0161ad96825e6a4a80a6bececad82c5940dbeeead20b61b5c348
[INFO] running `"docker" "start" "-a" "972f12caa08b0161ad96825e6a4a80a6bececad82c5940dbeeead20b61b5c348"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/cargo_metadata_ex-9976152a64df4140
[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" "972f12caa08b0161ad96825e6a4a80a6bececad82c5940dbeeead20b61b5c348"`
[INFO] running `"docker" "rm" "-f" "972f12caa08b0161ad96825e6a4a80a6bececad82c5940dbeeead20b61b5c348"`
[INFO] [stdout] 972f12caa08b0161ad96825e6a4a80a6bececad82c5940dbeeead20b61b5c348