[INFO] updating cached repository clu8/rust-exercises
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/clu8/rust-exercises
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/clu8/rust-exercises" "work/ex/beta-1.38-1/sources/1.37.0/gh/clu8/rust-exercises"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/clu8/rust-exercises'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/clu8/rust-exercises" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/clu8/rust-exercises"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/clu8/rust-exercises'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 809d444104da2b8c4d6681a133acb5a5d13a02b3
[INFO] sha for GitHub repo clu8/rust-exercises: 809d444104da2b8c4d6681a133acb5a5d13a02b3
[INFO] validating manifest of clu8/rust-exercises 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 clu8/rust-exercises 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 clu8/rust-exercises
[INFO] finished frobbing clu8/rust-exercises
[INFO] frobbed toml for clu8/rust-exercises written to work/ex/beta-1.38-1/sources/1.37.0/gh/clu8/rust-exercises/Cargo.toml
[INFO] started frobbing clu8/rust-exercises
[INFO] finished frobbing clu8/rust-exercises
[INFO] frobbed toml for clu8/rust-exercises written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/clu8/rust-exercises/Cargo.toml
[INFO] crate clu8/rust-exercises 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 clu8/rust-exercises 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-1/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/clu8/rust-exercises:/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] c2027fb8307d648fc443c7601225264538cfde7b17db9a3d0c58061756b26c57
[INFO] running `"docker" "start" "-a" "c2027fb8307d648fc443c7601225264538cfde7b17db9a3d0c58061756b26c57"`
[INFO] [stderr]    Compiling exercises v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.83s
[INFO] running `"docker" "inspect" "c2027fb8307d648fc443c7601225264538cfde7b17db9a3d0c58061756b26c57"`
[INFO] running `"docker" "rm" "-f" "c2027fb8307d648fc443c7601225264538cfde7b17db9a3d0c58061756b26c57"`
[INFO] [stdout] c2027fb8307d648fc443c7601225264538cfde7b17db9a3d0c58061756b26c57
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/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/clu8/rust-exercises:/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] fbb7ed6ca74fd57445b92799e7bff396cfc1f6d55e702093eeb28fc20fb89d3d
[INFO] running `"docker" "start" "-a" "fbb7ed6ca74fd57445b92799e7bff396cfc1f6d55e702093eeb28fc20fb89d3d"`
[INFO] [stderr]    Compiling exercises v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.25s
[INFO] running `"docker" "inspect" "fbb7ed6ca74fd57445b92799e7bff396cfc1f6d55e702093eeb28fc20fb89d3d"`
[INFO] running `"docker" "rm" "-f" "fbb7ed6ca74fd57445b92799e7bff396cfc1f6d55e702093eeb28fc20fb89d3d"`
[INFO] [stdout] fbb7ed6ca74fd57445b92799e7bff396cfc1f6d55e702093eeb28fc20fb89d3d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/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/clu8/rust-exercises:/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] 083d9a351b3fde46850f59ccf06c74eb3397c8ece28a3d3ee7a63b8eb67662b2
[INFO] running `"docker" "start" "-a" "083d9a351b3fde46850f59ccf06c74eb3397c8ece28a3d3ee7a63b8eb67662b2"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/exercises-99fa1612ccf7d903
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test program::test_parser ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "083d9a351b3fde46850f59ccf06c74eb3397c8ece28a3d3ee7a63b8eb67662b2"`
[INFO] running `"docker" "rm" "-f" "083d9a351b3fde46850f59ccf06c74eb3397c8ece28a3d3ee7a63b8eb67662b2"`
[INFO] [stdout] 083d9a351b3fde46850f59ccf06c74eb3397c8ece28a3d3ee7a63b8eb67662b2