[INFO] updating cached repository sajattack/mlxifier
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/sajattack/mlxifier
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/sajattack/mlxifier" "work/ex/beta-1.38-1/sources/1.37.0/gh/sajattack/mlxifier"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/sajattack/mlxifier'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/sajattack/mlxifier" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sajattack/mlxifier"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sajattack/mlxifier'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c1a5af1160fb7f1982b3ce9fcc821cb774e58ee7
[INFO] sha for GitHub repo sajattack/mlxifier: c1a5af1160fb7f1982b3ce9fcc821cb774e58ee7
[INFO] validating manifest of sajattack/mlxifier 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 sajattack/mlxifier 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 sajattack/mlxifier
[INFO] finished frobbing sajattack/mlxifier
[INFO] frobbed toml for sajattack/mlxifier written to work/ex/beta-1.38-1/sources/1.37.0/gh/sajattack/mlxifier/Cargo.toml
[INFO] started frobbing sajattack/mlxifier
[INFO] finished frobbing sajattack/mlxifier
[INFO] frobbed toml for sajattack/mlxifier written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sajattack/mlxifier/Cargo.toml
[INFO] crate sajattack/mlxifier 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 sajattack/mlxifier against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/sajattack/mlxifier:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 4fd743d2772d62bd21bb0c071b59248ed6641afa473f09a14aeca1a16701853c
[INFO] running `"docker" "start" "-a" "4fd743d2772d62bd21bb0c071b59248ed6641afa473f09a14aeca1a16701853c"`
[INFO] [stderr]    Compiling mlxifier v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     file.seek(SeekFrom::Start(2));
[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]     Finished dev [unoptimized + debuginfo] target(s) in 0.81s
[INFO] running `"docker" "inspect" "4fd743d2772d62bd21bb0c071b59248ed6641afa473f09a14aeca1a16701853c"`
[INFO] running `"docker" "rm" "-f" "4fd743d2772d62bd21bb0c071b59248ed6641afa473f09a14aeca1a16701853c"`
[INFO] [stdout] 4fd743d2772d62bd21bb0c071b59248ed6641afa473f09a14aeca1a16701853c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/sajattack/mlxifier:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 929733b997095d061a7bbe47292d3808b7372be0a208b163f2653de6ed35cf7e
[INFO] running `"docker" "start" "-a" "929733b997095d061a7bbe47292d3808b7372be0a208b163f2653de6ed35cf7e"`
[INFO] [stderr]    Compiling mlxifier v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     file.seek(SeekFrom::Start(2));
[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]     Finished dev [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `"docker" "inspect" "929733b997095d061a7bbe47292d3808b7372be0a208b163f2653de6ed35cf7e"`
[INFO] running `"docker" "rm" "-f" "929733b997095d061a7bbe47292d3808b7372be0a208b163f2653de6ed35cf7e"`
[INFO] [stdout] 929733b997095d061a7bbe47292d3808b7372be0a208b163f2653de6ed35cf7e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/sajattack/mlxifier:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 0a03f3e492cc9542c354efcf08c93274e713dfdb2f1da8372b0b5f67248afbb8
[INFO] running `"docker" "start" "-a" "0a03f3e492cc9542c354efcf08c93274e713dfdb2f1da8372b0b5f67248afbb8"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/mlxifier-d4ffb1527e1e909c
[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" "0a03f3e492cc9542c354efcf08c93274e713dfdb2f1da8372b0b5f67248afbb8"`
[INFO] running `"docker" "rm" "-f" "0a03f3e492cc9542c354efcf08c93274e713dfdb2f1da8372b0b5f67248afbb8"`
[INFO] [stdout] 0a03f3e492cc9542c354efcf08c93274e713dfdb2f1da8372b0b5f67248afbb8