[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 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 62447f078e161af6d7ed772445bd4829c91f79b346b7c9b4c1b2a9baa2826eb6
[INFO] running `"docker" "start" "-a" "62447f078e161af6d7ed772445bd4829c91f79b346b7c9b4c1b2a9baa2826eb6"`
[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 0.63s
[INFO] running `"docker" "inspect" "62447f078e161af6d7ed772445bd4829c91f79b346b7c9b4c1b2a9baa2826eb6"`
[INFO] running `"docker" "rm" "-f" "62447f078e161af6d7ed772445bd4829c91f79b346b7c9b4c1b2a9baa2826eb6"`
[INFO] [stdout] 62447f078e161af6d7ed772445bd4829c91f79b346b7c9b4c1b2a9baa2826eb6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 4b4ce6e5c2174f622a0fea8038f8f7a87d4ed416f3dbf156f4aa55713981d43f
[INFO] running `"docker" "start" "-a" "4b4ce6e5c2174f622a0fea8038f8f7a87d4ed416f3dbf156f4aa55713981d43f"`
[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 0.51s
[INFO] running `"docker" "inspect" "4b4ce6e5c2174f622a0fea8038f8f7a87d4ed416f3dbf156f4aa55713981d43f"`
[INFO] running `"docker" "rm" "-f" "4b4ce6e5c2174f622a0fea8038f8f7a87d4ed416f3dbf156f4aa55713981d43f"`
[INFO] [stdout] 4b4ce6e5c2174f622a0fea8038f8f7a87d4ed416f3dbf156f4aa55713981d43f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 43de1592088556136bf27885bd8f66d61d486028286360e4e453dbe8c0b6de6d
[INFO] running `"docker" "start" "-a" "43de1592088556136bf27885bd8f66d61d486028286360e4e453dbe8c0b6de6d"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/struct_project-4f32074120e7b22a
[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" "43de1592088556136bf27885bd8f66d61d486028286360e4e453dbe8c0b6de6d"`
[INFO] running `"docker" "rm" "-f" "43de1592088556136bf27885bd8f66d61d486028286360e4e453dbe8c0b6de6d"`
[INFO] [stdout] 43de1592088556136bf27885bd8f66d61d486028286360e4e453dbe8c0b6de6d