[INFO] updating cached repository silvanocerza/rect-area-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/silvanocerza/rect-area-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/silvanocerza/rect-area-rust" "work/ex/beta-1.38-1/sources/1.37.0/gh/silvanocerza/rect-area-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/silvanocerza/rect-area-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/silvanocerza/rect-area-rust" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/silvanocerza/rect-area-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/silvanocerza/rect-area-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7114c6f5c0d65d374d6c4023f652a8df449ab302
[INFO] sha for GitHub repo silvanocerza/rect-area-rust: 7114c6f5c0d65d374d6c4023f652a8df449ab302
[INFO] validating manifest of silvanocerza/rect-area-rust 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 silvanocerza/rect-area-rust 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 silvanocerza/rect-area-rust
[INFO] finished frobbing silvanocerza/rect-area-rust
[INFO] frobbed toml for silvanocerza/rect-area-rust written to work/ex/beta-1.38-1/sources/1.37.0/gh/silvanocerza/rect-area-rust/Cargo.toml
[INFO] started frobbing silvanocerza/rect-area-rust
[INFO] finished frobbing silvanocerza/rect-area-rust
[INFO] frobbed toml for silvanocerza/rect-area-rust written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/silvanocerza/rect-area-rust/Cargo.toml
[INFO] crate silvanocerza/rect-area-rust 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 silvanocerza/rect-area-rust 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-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/silvanocerza/rect-area-rust:/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] 073a33e5eb4c0a3342007b0a9aff04d39df0139ceff69482fd65a839ea12f4b7
[INFO] running `"docker" "start" "-a" "073a33e5eb4c0a3342007b0a9aff04d39df0139ceff69482fd65a839ea12f4b7"`
[INFO] [stderr]    Compiling rect_area v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `square1`
[INFO] [stderr]   --> src/main.rs:38:9
[INFO] [stderr]    |
[INFO] [stderr] 38 |     let square1 = Rectangle::square(10);
[INFO] [stderr]    |         ^^^^^^^ help: consider prefixing with an underscore: `_square1`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.79s
[INFO] running `"docker" "inspect" "073a33e5eb4c0a3342007b0a9aff04d39df0139ceff69482fd65a839ea12f4b7"`
[INFO] running `"docker" "rm" "-f" "073a33e5eb4c0a3342007b0a9aff04d39df0139ceff69482fd65a839ea12f4b7"`
[INFO] [stdout] 073a33e5eb4c0a3342007b0a9aff04d39df0139ceff69482fd65a839ea12f4b7
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/silvanocerza/rect-area-rust:/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] 0dedee364bc3134f5e2870dcc9ac9565980d1e8651e7def1d4e772dc5458afe3
[INFO] running `"docker" "start" "-a" "0dedee364bc3134f5e2870dcc9ac9565980d1e8651e7def1d4e772dc5458afe3"`
[INFO] [stderr]    Compiling rect_area v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `square1`
[INFO] [stderr]   --> src/main.rs:38:9
[INFO] [stderr]    |
[INFO] [stderr] 38 |     let square1 = Rectangle::square(10);
[INFO] [stderr]    |         ^^^^^^^ help: consider prefixing with an underscore: `_square1`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.88s
[INFO] running `"docker" "inspect" "0dedee364bc3134f5e2870dcc9ac9565980d1e8651e7def1d4e772dc5458afe3"`
[INFO] running `"docker" "rm" "-f" "0dedee364bc3134f5e2870dcc9ac9565980d1e8651e7def1d4e772dc5458afe3"`
[INFO] [stdout] 0dedee364bc3134f5e2870dcc9ac9565980d1e8651e7def1d4e772dc5458afe3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/silvanocerza/rect-area-rust:/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] 75705e74c5d5832015f234eabeaf8a3ef7aa75a7763b54aeae1a8b267eb3bd03
[INFO] running `"docker" "start" "-a" "75705e74c5d5832015f234eabeaf8a3ef7aa75a7763b54aeae1a8b267eb3bd03"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rect_area-831762675b63b1aa
[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" "75705e74c5d5832015f234eabeaf8a3ef7aa75a7763b54aeae1a8b267eb3bd03"`
[INFO] running `"docker" "rm" "-f" "75705e74c5d5832015f234eabeaf8a3ef7aa75a7763b54aeae1a8b267eb3bd03"`
[INFO] [stdout] 75705e74c5d5832015f234eabeaf8a3ef7aa75a7763b54aeae1a8b267eb3bd03