[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-1.38-1/sources/1.37.0/gh/rjmohammad/rust_struct"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/rjmohammad/rust_struct'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/rjmohammad/rust_struct" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/rjmohammad/rust_struct"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/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 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of rjmohammad/rust_struct 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 rjmohammad/rust_struct
[INFO] finished frobbing rjmohammad/rust_struct
[INFO] frobbed toml for rjmohammad/rust_struct written to work/ex/beta-1.38-1/sources/1.37.0/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-1.38-1/sources/beta-2019-08-13/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" "+1.37.0" "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 rjmohammad/rust_struct 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-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] a450696678c417ca173d4c399de87855ec6afa5e1fa1c427e829d2242060cb32
[INFO] running `"docker" "start" "-a" "a450696678c417ca173d4c399de87855ec6afa5e1fa1c427e829d2242060cb32"`
[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 0.56s
[INFO] running `"docker" "inspect" "a450696678c417ca173d4c399de87855ec6afa5e1fa1c427e829d2242060cb32"`
[INFO] running `"docker" "rm" "-f" "a450696678c417ca173d4c399de87855ec6afa5e1fa1c427e829d2242060cb32"`
[INFO] [stdout] a450696678c417ca173d4c399de87855ec6afa5e1fa1c427e829d2242060cb32
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 515833c62e7fa07901852484a442370aa260dd2e392861ff16fa0a93700929dd
[INFO] running `"docker" "start" "-a" "515833c62e7fa07901852484a442370aa260dd2e392861ff16fa0a93700929dd"`
[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 0.59s
[INFO] running `"docker" "inspect" "515833c62e7fa07901852484a442370aa260dd2e392861ff16fa0a93700929dd"`
[INFO] running `"docker" "rm" "-f" "515833c62e7fa07901852484a442370aa260dd2e392861ff16fa0a93700929dd"`
[INFO] [stdout] 515833c62e7fa07901852484a442370aa260dd2e392861ff16fa0a93700929dd
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 04283b7da408a71a934f01a94905b871f51139e34604294dae97c10857cb6380
[INFO] running `"docker" "start" "-a" "04283b7da408a71a934f01a94905b871f51139e34604294dae97c10857cb6380"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/struct_project-3ec9c861c66d2bea
[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" "04283b7da408a71a934f01a94905b871f51139e34604294dae97c10857cb6380"`
[INFO] running `"docker" "rm" "-f" "04283b7da408a71a934f01a94905b871f51139e34604294dae97c10857cb6380"`
[INFO] [stdout] 04283b7da408a71a934f01a94905b871f51139e34604294dae97c10857cb6380