[INFO] updating cached repository CRHarding/simple-rust-area
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/CRHarding/simple-rust-area
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/CRHarding/simple-rust-area" "work/ex/beta-1.38-1/sources/1.37.0/gh/CRHarding/simple-rust-area"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/CRHarding/simple-rust-area'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/CRHarding/simple-rust-area" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/CRHarding/simple-rust-area"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/CRHarding/simple-rust-area'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e09266cd0288b46cdf8be29a1e2e8e58bfcff1d4
[INFO] sha for GitHub repo CRHarding/simple-rust-area: e09266cd0288b46cdf8be29a1e2e8e58bfcff1d4
[INFO] validating manifest of CRHarding/simple-rust-area 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 CRHarding/simple-rust-area 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 CRHarding/simple-rust-area
[INFO] finished frobbing CRHarding/simple-rust-area
[INFO] frobbed toml for CRHarding/simple-rust-area written to work/ex/beta-1.38-1/sources/1.37.0/gh/CRHarding/simple-rust-area/Cargo.toml
[INFO] started frobbing CRHarding/simple-rust-area
[INFO] finished frobbing CRHarding/simple-rust-area
[INFO] frobbed toml for CRHarding/simple-rust-area written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/CRHarding/simple-rust-area/Cargo.toml
[INFO] crate CRHarding/simple-rust-area 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 CRHarding/simple-rust-area 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-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/CRHarding/simple-rust-area:/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] 0a58e008f5d52e9fc9f48b886a8d47defbde01bcda60fefe935fcad00a159c6d
[INFO] running `"docker" "start" "-a" "0a58e008f5d52e9fc9f48b886a8d47defbde01bcda60fefe935fcad00a159c6d"`
[INFO] [stderr]    Compiling rectangles v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `sq`
[INFO] [stderr]   --> src/main.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let sq = Rectangle::square(3);
[INFO] [stderr]    |         ^^ help: consider prefixing with an underscore: `_sq`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `area`
[INFO] [stderr]  --> src/main.rs:8:5
[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 0.54s
[INFO] running `"docker" "inspect" "0a58e008f5d52e9fc9f48b886a8d47defbde01bcda60fefe935fcad00a159c6d"`
[INFO] running `"docker" "rm" "-f" "0a58e008f5d52e9fc9f48b886a8d47defbde01bcda60fefe935fcad00a159c6d"`
[INFO] [stdout] 0a58e008f5d52e9fc9f48b886a8d47defbde01bcda60fefe935fcad00a159c6d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/CRHarding/simple-rust-area:/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] 60adbc3ffec32561589036acf7151ceb55ccb171e55dfb93a2f346a31596af30
[INFO] running `"docker" "start" "-a" "60adbc3ffec32561589036acf7151ceb55ccb171e55dfb93a2f346a31596af30"`
[INFO] [stderr]    Compiling rectangles v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `sq`
[INFO] [stderr]   --> src/main.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let sq = Rectangle::square(3);
[INFO] [stderr]    |         ^^ help: consider prefixing with an underscore: `_sq`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `area`
[INFO] [stderr]  --> src/main.rs:8:5
[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 0.66s
[INFO] running `"docker" "inspect" "60adbc3ffec32561589036acf7151ceb55ccb171e55dfb93a2f346a31596af30"`
[INFO] running `"docker" "rm" "-f" "60adbc3ffec32561589036acf7151ceb55ccb171e55dfb93a2f346a31596af30"`
[INFO] [stdout] 60adbc3ffec32561589036acf7151ceb55ccb171e55dfb93a2f346a31596af30
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/CRHarding/simple-rust-area:/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] 6a7f84c18c9f0b4654156f59f334261a7f37fed029c0bae1b38521658a76f28a
[INFO] running `"docker" "start" "-a" "6a7f84c18c9f0b4654156f59f334261a7f37fed029c0bae1b38521658a76f28a"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rectangles-87a7291af03d141a
[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" "6a7f84c18c9f0b4654156f59f334261a7f37fed029c0bae1b38521658a76f28a"`
[INFO] running `"docker" "rm" "-f" "6a7f84c18c9f0b4654156f59f334261a7f37fed029c0bae1b38521658a76f28a"`
[INFO] [stdout] 6a7f84c18c9f0b4654156f59f334261a7f37fed029c0bae1b38521658a76f28a