[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 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/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 7b201cfb1bed170fa367afd7bcb1b2d1400bce7984afbf5bf9a69c26227ec3b3
[INFO] running `"docker" "start" "-a" "7b201cfb1bed170fa367afd7bcb1b2d1400bce7984afbf5bf9a69c26227ec3b3"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "7b201cfb1bed170fa367afd7bcb1b2d1400bce7984afbf5bf9a69c26227ec3b3"`
[INFO] running `"docker" "rm" "-f" "7b201cfb1bed170fa367afd7bcb1b2d1400bce7984afbf5bf9a69c26227ec3b3"`
[INFO] [stdout] 7b201cfb1bed170fa367afd7bcb1b2d1400bce7984afbf5bf9a69c26227ec3b3
[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/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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] a15da7869a5a83e3284bcbe895665849e51f4b82a33abfb8d90f9f6d949e8ee3
[INFO] running `"docker" "start" "-a" "a15da7869a5a83e3284bcbe895665849e51f4b82a33abfb8d90f9f6d949e8ee3"`
[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 0.52s
[INFO] running `"docker" "inspect" "a15da7869a5a83e3284bcbe895665849e51f4b82a33abfb8d90f9f6d949e8ee3"`
[INFO] running `"docker" "rm" "-f" "a15da7869a5a83e3284bcbe895665849e51f4b82a33abfb8d90f9f6d949e8ee3"`
[INFO] [stdout] a15da7869a5a83e3284bcbe895665849e51f4b82a33abfb8d90f9f6d949e8ee3
[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/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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 3ed7ad65b5f426f18b5268d4e37b892072e8c09be67d34f63b7c156dc6b063ec
[INFO] running `"docker" "start" "-a" "3ed7ad65b5f426f18b5268d4e37b892072e8c09be67d34f63b7c156dc6b063ec"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/mlxifier-412818a1b313f82d
[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" "3ed7ad65b5f426f18b5268d4e37b892072e8c09be67d34f63b7c156dc6b063ec"`
[INFO] running `"docker" "rm" "-f" "3ed7ad65b5f426f18b5268d4e37b892072e8c09be67d34f63b7c156dc6b063ec"`
[INFO] [stdout] 3ed7ad65b5f426f18b5268d4e37b892072e8c09be67d34f63b7c156dc6b063ec