[INFO] updating cached repository ryskit/rust_csv_read_write
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ryskit/rust_csv_read_write
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ryskit/rust_csv_read_write" "work/ex/beta-1.37-6/sources/1.36.0/gh/ryskit/rust_csv_read_write"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/ryskit/rust_csv_read_write'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ryskit/rust_csv_read_write" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ryskit/rust_csv_read_write"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ryskit/rust_csv_read_write'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e88b61a7c0554a0281adbe4a56e1a6b0474d9a59
[INFO] sha for GitHub repo ryskit/rust_csv_read_write: e88b61a7c0554a0281adbe4a56e1a6b0474d9a59
[INFO] validating manifest of ryskit/rust_csv_read_write 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 ryskit/rust_csv_read_write 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 ryskit/rust_csv_read_write
[INFO] finished frobbing ryskit/rust_csv_read_write
[INFO] frobbed toml for ryskit/rust_csv_read_write written to work/ex/beta-1.37-6/sources/1.36.0/gh/ryskit/rust_csv_read_write/Cargo.toml
[INFO] started frobbing ryskit/rust_csv_read_write
[INFO] finished frobbing ryskit/rust_csv_read_write
[INFO] frobbed toml for ryskit/rust_csv_read_write written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ryskit/rust_csv_read_write/Cargo.toml
[INFO] crate ryskit/rust_csv_read_write 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 ryskit/rust_csv_read_write against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/ryskit/rust_csv_read_write:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 8619177c1534e8f9b368f61b8b5fecea8ae2c8d0cdda73843024b85b28aa6a89
[INFO] running `"docker" "start" "-a" "8619177c1534e8f9b368f61b8b5fecea8ae2c8d0cdda73843024b85b28aa6a89"`
[INFO] [stderr]    Compiling memchr v2.1.2
[INFO] [stderr]    Compiling csv-core v0.1.5
[INFO] [stderr]    Compiling csv v1.0.5
[INFO] [stderr]    Compiling rust_csv_read_write v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     write(&mut rdr);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:30:9
[INFO] [stderr]    |
[INFO] [stderr] 30 |         wtr.write_record(record.get(0));
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.74s
[INFO] running `"docker" "inspect" "8619177c1534e8f9b368f61b8b5fecea8ae2c8d0cdda73843024b85b28aa6a89"`
[INFO] running `"docker" "rm" "-f" "8619177c1534e8f9b368f61b8b5fecea8ae2c8d0cdda73843024b85b28aa6a89"`
[INFO] [stdout] 8619177c1534e8f9b368f61b8b5fecea8ae2c8d0cdda73843024b85b28aa6a89
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/ryskit/rust_csv_read_write:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] dabe2cc6fdaea877bacc45c51240165a51b232491119ee05d93444bf05f30a80
[INFO] running `"docker" "start" "-a" "dabe2cc6fdaea877bacc45c51240165a51b232491119ee05d93444bf05f30a80"`
[INFO] [stderr]    Compiling rust_csv_read_write v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     write(&mut rdr);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:30:9
[INFO] [stderr]    |
[INFO] [stderr] 30 |         wtr.write_record(record.get(0));
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `"docker" "inspect" "dabe2cc6fdaea877bacc45c51240165a51b232491119ee05d93444bf05f30a80"`
[INFO] running `"docker" "rm" "-f" "dabe2cc6fdaea877bacc45c51240165a51b232491119ee05d93444bf05f30a80"`
[INFO] [stdout] dabe2cc6fdaea877bacc45c51240165a51b232491119ee05d93444bf05f30a80
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/ryskit/rust_csv_read_write:/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 1d885b609fd07f697a853d4fc93d11730ab456f6223e91aa910e3ca06db6bdae
[INFO] running `"docker" "start" "-a" "1d885b609fd07f697a853d4fc93d11730ab456f6223e91aa910e3ca06db6bdae"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_csv_read_write-da37a90f72d8afee
[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" "1d885b609fd07f697a853d4fc93d11730ab456f6223e91aa910e3ca06db6bdae"`
[INFO] running `"docker" "rm" "-f" "1d885b609fd07f697a853d4fc93d11730ab456f6223e91aa910e3ca06db6bdae"`
[INFO] [stdout] 1d885b609fd07f697a853d4fc93d11730ab456f6223e91aa910e3ca06db6bdae