[INFO] crate apt-rs 0.2.1 is already in cache
[INFO] extracting crate apt-rs 0.2.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/apt-rs/0.2.1
[INFO] extracting crate apt-rs 0.2.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/apt-rs/0.2.1
[INFO] validating manifest of apt-rs-0.2.1 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 apt-rs-0.2.1 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 apt-rs-0.2.1
[INFO] finished frobbing apt-rs-0.2.1
[INFO] frobbed toml for apt-rs-0.2.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/apt-rs/0.2.1/Cargo.toml
[INFO] started frobbing apt-rs-0.2.1
[INFO] finished frobbing apt-rs-0.2.1
[INFO] frobbed toml for apt-rs-0.2.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/apt-rs/0.2.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 apt-rs-0.2.1 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/reg/apt-rs/0.2.1:/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] dd59f762c9b40ef2aa3556c9aabe8a7edea715532a1d0e10626fc3706470a412
[INFO] running `"docker" "start" "-a" "dd59f762c9b40ef2aa3556c9aabe8a7edea715532a1d0e10626fc3706470a412"`
[INFO] [stderr]    Compiling apt-rs v0.2.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `result`
[INFO] [stderr]   --> src/main.rs:63:9
[INFO] [stderr]    |
[INFO] [stderr] 63 |     let result = command.stdout(Stdio::inherit()).spawn()
[INFO] [stderr]    |         ^^^^^^ help: consider prefixing with an underscore: `_result`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.88s
[INFO] running `"docker" "inspect" "dd59f762c9b40ef2aa3556c9aabe8a7edea715532a1d0e10626fc3706470a412"`
[INFO] running `"docker" "rm" "-f" "dd59f762c9b40ef2aa3556c9aabe8a7edea715532a1d0e10626fc3706470a412"`
[INFO] [stdout] dd59f762c9b40ef2aa3556c9aabe8a7edea715532a1d0e10626fc3706470a412
[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/reg/apt-rs/0.2.1:/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] ea8bab3195e8e428d5b605ac4b525fe525e9f1c1f031fbe923ff72d11904a6a6
[INFO] running `"docker" "start" "-a" "ea8bab3195e8e428d5b605ac4b525fe525e9f1c1f031fbe923ff72d11904a6a6"`
[INFO] [stderr]    Compiling apt-rs v0.2.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `result`
[INFO] [stderr]   --> src/main.rs:63:9
[INFO] [stderr]    |
[INFO] [stderr] 63 |     let result = command.stdout(Stdio::inherit()).spawn()
[INFO] [stderr]    |         ^^^^^^ help: consider prefixing with an underscore: `_result`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `"docker" "inspect" "ea8bab3195e8e428d5b605ac4b525fe525e9f1c1f031fbe923ff72d11904a6a6"`
[INFO] running `"docker" "rm" "-f" "ea8bab3195e8e428d5b605ac4b525fe525e9f1c1f031fbe923ff72d11904a6a6"`
[INFO] [stdout] ea8bab3195e8e428d5b605ac4b525fe525e9f1c1f031fbe923ff72d11904a6a6
[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/reg/apt-rs/0.2.1:/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] 1d60d03987180d2d435a80c733de203d2a83708da7b6d28221107d0e5d1c5d75
[INFO] running `"docker" "start" "-a" "1d60d03987180d2d435a80c733de203d2a83708da7b6d28221107d0e5d1c5d75"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/apt_rs-55631f291c7b6a18
[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" "1d60d03987180d2d435a80c733de203d2a83708da7b6d28221107d0e5d1c5d75"`
[INFO] running `"docker" "rm" "-f" "1d60d03987180d2d435a80c733de203d2a83708da7b6d28221107d0e5d1c5d75"`
[INFO] [stdout] 1d60d03987180d2d435a80c733de203d2a83708da7b6d28221107d0e5d1c5d75