[INFO] updating cached repository rjmohammad/rust_struct
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/rjmohammad/rust_struct
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/rjmohammad/rust_struct" "work/ex/beta-1.37-6/sources/1.36.0/gh/rjmohammad/rust_struct"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/rjmohammad/rust_struct'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/rjmohammad/rust_struct" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/rjmohammad/rust_struct"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/rjmohammad/rust_struct'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0102dbc429e5a86e500577133894f3cab9dc781f
[INFO] sha for GitHub repo rjmohammad/rust_struct: 0102dbc429e5a86e500577133894f3cab9dc781f
[INFO] validating manifest of rjmohammad/rust_struct 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 rjmohammad/rust_struct 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 rjmohammad/rust_struct
[INFO] finished frobbing rjmohammad/rust_struct
[INFO] frobbed toml for rjmohammad/rust_struct written to work/ex/beta-1.37-6/sources/1.36.0/gh/rjmohammad/rust_struct/Cargo.toml
[INFO] started frobbing rjmohammad/rust_struct
[INFO] finished frobbing rjmohammad/rust_struct
[INFO] frobbed toml for rjmohammad/rust_struct written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/rjmohammad/rust_struct/Cargo.toml
[INFO] crate rjmohammad/rust_struct 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 rjmohammad/rust_struct 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-1/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/rjmohammad/rust_struct:/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] 4454eea5637685dc69339df469d5d4e4593aefd9a6d9f0c026a75026363e4184
[INFO] running `"docker" "start" "-a" "4454eea5637685dc69339df469d5d4e4593aefd9a6d9f0c026a75026363e4184"`
[INFO] [stderr]    Compiling struct_project v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `area`
[INFO] [stderr]  --> src/main.rs:8:3
[INFO] [stderr]   |
[INFO] [stderr] 8 |   fn area(&self) -> u32 {
[INFO] [stderr]   |   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `"docker" "inspect" "4454eea5637685dc69339df469d5d4e4593aefd9a6d9f0c026a75026363e4184"`
[INFO] running `"docker" "rm" "-f" "4454eea5637685dc69339df469d5d4e4593aefd9a6d9f0c026a75026363e4184"`
[INFO] [stdout] 4454eea5637685dc69339df469d5d4e4593aefd9a6d9f0c026a75026363e4184
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/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/rjmohammad/rust_struct:/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] 443a11b65e1ae38c66c9e7896e5a9a588de8d930887de7bdfe1c5d8bafac7145
[INFO] running `"docker" "start" "-a" "443a11b65e1ae38c66c9e7896e5a9a588de8d930887de7bdfe1c5d8bafac7145"`
[INFO] [stderr]    Compiling struct_project v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `area`
[INFO] [stderr]  --> src/main.rs:8:3
[INFO] [stderr]   |
[INFO] [stderr] 8 |   fn area(&self) -> u32 {
[INFO] [stderr]   |   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.37s
[INFO] running `"docker" "inspect" "443a11b65e1ae38c66c9e7896e5a9a588de8d930887de7bdfe1c5d8bafac7145"`
[INFO] running `"docker" "rm" "-f" "443a11b65e1ae38c66c9e7896e5a9a588de8d930887de7bdfe1c5d8bafac7145"`
[INFO] [stdout] 443a11b65e1ae38c66c9e7896e5a9a588de8d930887de7bdfe1c5d8bafac7145
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/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/rjmohammad/rust_struct:/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] d0f8281fe85940d55439204a26efa57106fb83170783b7144fb6ee1bee2ef43f
[INFO] running `"docker" "start" "-a" "d0f8281fe85940d55439204a26efa57106fb83170783b7144fb6ee1bee2ef43f"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/struct_project-043b977f8c138287
[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" "d0f8281fe85940d55439204a26efa57106fb83170783b7144fb6ee1bee2ef43f"`
[INFO] running `"docker" "rm" "-f" "d0f8281fe85940d55439204a26efa57106fb83170783b7144fb6ee1bee2ef43f"`
[INFO] [stdout] d0f8281fe85940d55439204a26efa57106fb83170783b7144fb6ee1bee2ef43f