[INFO] updating cached repository shaopengw/cargo-check-bug-demo
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/shaopengw/cargo-check-bug-demo
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/shaopengw/cargo-check-bug-demo" "work/ex/beta-1.37-6/sources/1.36.0/gh/shaopengw/cargo-check-bug-demo"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/shaopengw/cargo-check-bug-demo'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/shaopengw/cargo-check-bug-demo" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/shaopengw/cargo-check-bug-demo"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/shaopengw/cargo-check-bug-demo'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1100e314cb3d5df3583ac01fffceebce699cacd0
[INFO] sha for GitHub repo shaopengw/cargo-check-bug-demo: 1100e314cb3d5df3583ac01fffceebce699cacd0
[INFO] validating manifest of shaopengw/cargo-check-bug-demo 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 shaopengw/cargo-check-bug-demo 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 shaopengw/cargo-check-bug-demo
[INFO] finished frobbing shaopengw/cargo-check-bug-demo
[INFO] frobbed toml for shaopengw/cargo-check-bug-demo written to work/ex/beta-1.37-6/sources/1.36.0/gh/shaopengw/cargo-check-bug-demo/Cargo.toml
[INFO] started frobbing shaopengw/cargo-check-bug-demo
[INFO] finished frobbing shaopengw/cargo-check-bug-demo
[INFO] frobbed toml for shaopengw/cargo-check-bug-demo written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/shaopengw/cargo-check-bug-demo/Cargo.toml
[INFO] crate shaopengw/cargo-check-bug-demo 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 shaopengw/cargo-check-bug-demo against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/shaopengw/cargo-check-bug-demo:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 31b0111e49e66a90817d2aba4575137437e8d842c3fc940d98e44809585ed29a
[INFO] running `"docker" "start" "-a" "31b0111e49e66a90817d2aba4575137437e8d842c3fc940d98e44809585ed29a"`
[INFO] [stderr]    Compiling box-bug v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: field is never used: `data`
[INFO] [stderr]   --> src/main.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     data: Box<Enum>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.49s
[INFO] running `"docker" "inspect" "31b0111e49e66a90817d2aba4575137437e8d842c3fc940d98e44809585ed29a"`
[INFO] running `"docker" "rm" "-f" "31b0111e49e66a90817d2aba4575137437e8d842c3fc940d98e44809585ed29a"`
[INFO] [stdout] 31b0111e49e66a90817d2aba4575137437e8d842c3fc940d98e44809585ed29a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/shaopengw/cargo-check-bug-demo:/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] ed3b6168565fd42b41e4d4f0ce6d8a0aa308a22920323e24b31d15eb74603752
[INFO] running `"docker" "start" "-a" "ed3b6168565fd42b41e4d4f0ce6d8a0aa308a22920323e24b31d15eb74603752"`
[INFO] [stderr]    Compiling box-bug v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: field is never used: `data`
[INFO] [stderr]   --> src/main.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     data: Box<Enum>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `"docker" "inspect" "ed3b6168565fd42b41e4d4f0ce6d8a0aa308a22920323e24b31d15eb74603752"`
[INFO] running `"docker" "rm" "-f" "ed3b6168565fd42b41e4d4f0ce6d8a0aa308a22920323e24b31d15eb74603752"`
[INFO] [stdout] ed3b6168565fd42b41e4d4f0ce6d8a0aa308a22920323e24b31d15eb74603752
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/shaopengw/cargo-check-bug-demo:/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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 63e47f3bd4b3cc5450c794d6f684a87ad09db5a54b0cdcc3c7996ff26260af10
[INFO] running `"docker" "start" "-a" "63e47f3bd4b3cc5450c794d6f684a87ad09db5a54b0cdcc3c7996ff26260af10"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/box_bug-4c8909529cb4cbb6
[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" "63e47f3bd4b3cc5450c794d6f684a87ad09db5a54b0cdcc3c7996ff26260af10"`
[INFO] running `"docker" "rm" "-f" "63e47f3bd4b3cc5450c794d6f684a87ad09db5a54b0cdcc3c7996ff26260af10"`
[INFO] [stdout] 63e47f3bd4b3cc5450c794d6f684a87ad09db5a54b0cdcc3c7996ff26260af10