[INFO] updating cached repository zzibert/rectangles
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/zzibert/rectangles
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/zzibert/rectangles" "work/ex/beta-1.38-1/sources/1.37.0/gh/zzibert/rectangles"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/zzibert/rectangles'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/zzibert/rectangles" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/zzibert/rectangles"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/zzibert/rectangles'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9f7edcf3d27d08bacfa197658f2957bc7e944ac3
[INFO] sha for GitHub repo zzibert/rectangles: 9f7edcf3d27d08bacfa197658f2957bc7e944ac3
[INFO] validating manifest of zzibert/rectangles 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 zzibert/rectangles 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 zzibert/rectangles
[INFO] finished frobbing zzibert/rectangles
[INFO] frobbed toml for zzibert/rectangles written to work/ex/beta-1.38-1/sources/1.37.0/gh/zzibert/rectangles/Cargo.toml
[INFO] started frobbing zzibert/rectangles
[INFO] finished frobbing zzibert/rectangles
[INFO] frobbed toml for zzibert/rectangles written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/zzibert/rectangles/Cargo.toml
[INFO] crate zzibert/rectangles 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing zzibert/rectangles 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-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/zzibert/rectangles:/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] 71e3739ad1f1373c86a24cd4b9b8002f8867ccb3505fc4f72b53e8e895a300ae
[INFO] running `"docker" "start" "-a" "71e3739ad1f1373c86a24cd4b9b8002f8867ccb3505fc4f72b53e8e895a300ae"`
[INFO] [stderr]    Compiling rectangles v0.1.0 (/opt/crater/workdir)
[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] warning: method is never used: `square`
[INFO] [stderr]   --> src/main.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     fn square(size: u32) -> Rectangle {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.66s
[INFO] running `"docker" "inspect" "71e3739ad1f1373c86a24cd4b9b8002f8867ccb3505fc4f72b53e8e895a300ae"`
[INFO] running `"docker" "rm" "-f" "71e3739ad1f1373c86a24cd4b9b8002f8867ccb3505fc4f72b53e8e895a300ae"`
[INFO] [stdout] 71e3739ad1f1373c86a24cd4b9b8002f8867ccb3505fc4f72b53e8e895a300ae
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/zzibert/rectangles:/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] c3794c40e8f228f4db089cee4a3aa3e357e1706d774255cc6bbb96f1baa552a8
[INFO] running `"docker" "start" "-a" "c3794c40e8f228f4db089cee4a3aa3e357e1706d774255cc6bbb96f1baa552a8"`
[INFO] [stderr]    Compiling rectangles v0.1.0 (/opt/crater/workdir)
[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] warning: method is never used: `square`
[INFO] [stderr]   --> src/main.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     fn square(size: u32) -> Rectangle {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `"docker" "inspect" "c3794c40e8f228f4db089cee4a3aa3e357e1706d774255cc6bbb96f1baa552a8"`
[INFO] running `"docker" "rm" "-f" "c3794c40e8f228f4db089cee4a3aa3e357e1706d774255cc6bbb96f1baa552a8"`
[INFO] [stdout] c3794c40e8f228f4db089cee4a3aa3e357e1706d774255cc6bbb96f1baa552a8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/zzibert/rectangles:/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] d446a17c15b3e88cc1d2d917905a6335fc8e69c952e29e5ea4fb6b480bf86d0f
[INFO] running `"docker" "start" "-a" "d446a17c15b3e88cc1d2d917905a6335fc8e69c952e29e5ea4fb6b480bf86d0f"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[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" "d446a17c15b3e88cc1d2d917905a6335fc8e69c952e29e5ea4fb6b480bf86d0f"`
[INFO] running `"docker" "rm" "-f" "d446a17c15b3e88cc1d2d917905a6335fc8e69c952e29e5ea4fb6b480bf86d0f"`
[INFO] [stdout] d446a17c15b3e88cc1d2d917905a6335fc8e69c952e29e5ea4fb6b480bf86d0f