[INFO] updating cached repository milliams/square-sum
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/milliams/square-sum
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/milliams/square-sum" "work/ex/beta-1.38-1/sources/1.37.0/gh/milliams/square-sum"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/milliams/square-sum'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/milliams/square-sum" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/milliams/square-sum"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/milliams/square-sum'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] addfe622ba5d301ef93f7ae19d0104368bd1681e
[INFO] sha for GitHub repo milliams/square-sum: addfe622ba5d301ef93f7ae19d0104368bd1681e
[INFO] validating manifest of milliams/square-sum 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 milliams/square-sum 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 milliams/square-sum
[INFO] finished frobbing milliams/square-sum
[INFO] frobbed toml for milliams/square-sum written to work/ex/beta-1.38-1/sources/1.37.0/gh/milliams/square-sum/Cargo.toml
[INFO] started frobbing milliams/square-sum
[INFO] finished frobbing milliams/square-sum
[INFO] frobbed toml for milliams/square-sum written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/milliams/square-sum/Cargo.toml
[INFO] crate milliams/square-sum 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]     Updating crates.io index
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/milliams/square-sum/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 milliams/square-sum against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/milliams/square-sum:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 53d7cd819654e147da756122375f7704a7915419beb06fbc17a5bae8ec8384a6
[INFO] running `"docker" "start" "-a" "53d7cd819654e147da756122375f7704a7915419beb06fbc17a5bae8ec8384a6"`
[INFO] [stderr]    Compiling square-sum v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `check_sum_squares`
[INFO] [stderr]    --> src/main.rs:362:1
[INFO] [stderr]     |
[INFO] [stderr] 362 | fn check_sum_squares(vals: &[usize]) -> bool {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.47s
[INFO] running `"docker" "inspect" "53d7cd819654e147da756122375f7704a7915419beb06fbc17a5bae8ec8384a6"`
[INFO] running `"docker" "rm" "-f" "53d7cd819654e147da756122375f7704a7915419beb06fbc17a5bae8ec8384a6"`
[INFO] [stdout] 53d7cd819654e147da756122375f7704a7915419beb06fbc17a5bae8ec8384a6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/milliams/square-sum:/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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 67f36aae5d9397408ee6d13fc79c91e5026f4d9d1d3cb222d847b6e4a4b7c0f5
[INFO] running `"docker" "start" "-a" "67f36aae5d9397408ee6d13fc79c91e5026f4d9d1d3cb222d847b6e4a4b7c0f5"`
[INFO] [stderr]    Compiling square-sum v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `check_sum_squares`
[INFO] [stderr]    --> src/main.rs:362:1
[INFO] [stderr]     |
[INFO] [stderr] 362 | fn check_sum_squares(vals: &[usize]) -> bool {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.87s
[INFO] running `"docker" "inspect" "67f36aae5d9397408ee6d13fc79c91e5026f4d9d1d3cb222d847b6e4a4b7c0f5"`
[INFO] running `"docker" "rm" "-f" "67f36aae5d9397408ee6d13fc79c91e5026f4d9d1d3cb222d847b6e4a4b7c0f5"`
[INFO] [stdout] 67f36aae5d9397408ee6d13fc79c91e5026f4d9d1d3cb222d847b6e4a4b7c0f5
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/milliams/square-sum:/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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 3c38b07be887d9ef8b86ebeaa1d4362a0831b9c70b4bf4260f4737035991faef
[INFO] running `"docker" "start" "-a" "3c38b07be887d9ef8b86ebeaa1d4362a0831b9c70b4bf4260f4737035991faef"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/square_sum-bf1f2beb7fe1b8cf
[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" "3c38b07be887d9ef8b86ebeaa1d4362a0831b9c70b4bf4260f4737035991faef"`
[INFO] running `"docker" "rm" "-f" "3c38b07be887d9ef8b86ebeaa1d4362a0831b9c70b4bf4260f4737035991faef"`
[INFO] [stdout] 3c38b07be887d9ef8b86ebeaa1d4362a0831b9c70b4bf4260f4737035991faef