[INFO] updating cached repository garyemerson/breadth_first_search_shortest_reach
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/garyemerson/breadth_first_search_shortest_reach
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/garyemerson/breadth_first_search_shortest_reach" "work/ex/beta-1.38-1/sources/1.37.0/gh/garyemerson/breadth_first_search_shortest_reach"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/garyemerson/breadth_first_search_shortest_reach'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/garyemerson/breadth_first_search_shortest_reach" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/garyemerson/breadth_first_search_shortest_reach"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/garyemerson/breadth_first_search_shortest_reach'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7c621ee57319559079e0398369287452327d7d94
[INFO] sha for GitHub repo garyemerson/breadth_first_search_shortest_reach: 7c621ee57319559079e0398369287452327d7d94
[INFO] validating manifest of garyemerson/breadth_first_search_shortest_reach 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 garyemerson/breadth_first_search_shortest_reach 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 garyemerson/breadth_first_search_shortest_reach
[INFO] finished frobbing garyemerson/breadth_first_search_shortest_reach
[INFO] frobbed toml for garyemerson/breadth_first_search_shortest_reach written to work/ex/beta-1.38-1/sources/1.37.0/gh/garyemerson/breadth_first_search_shortest_reach/Cargo.toml
[INFO] started frobbing garyemerson/breadth_first_search_shortest_reach
[INFO] finished frobbing garyemerson/breadth_first_search_shortest_reach
[INFO] frobbed toml for garyemerson/breadth_first_search_shortest_reach written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/garyemerson/breadth_first_search_shortest_reach/Cargo.toml
[INFO] crate garyemerson/breadth_first_search_shortest_reach 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 garyemerson/breadth_first_search_shortest_reach 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-5/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/garyemerson/breadth_first_search_shortest_reach:/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] 72bd7ad21266f57c91b6276f42b885b303a8985982792061d5e43843610726a3
[INFO] running `"docker" "start" "-a" "72bd7ad21266f57c91b6276f42b885b303a8985982792061d5e43843610726a3"`
[INFO] [stderr]    Compiling breadth_first_search_shortest_reach v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `num_edges`
[INFO] [stderr]   --> src/main.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     num_edges: i32,
[INFO] [stderr]    |     ^^^^^^^^^ help: consider prefixing with an underscore: `_num_edges`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.86s
[INFO] running `"docker" "inspect" "72bd7ad21266f57c91b6276f42b885b303a8985982792061d5e43843610726a3"`
[INFO] running `"docker" "rm" "-f" "72bd7ad21266f57c91b6276f42b885b303a8985982792061d5e43843610726a3"`
[INFO] [stdout] 72bd7ad21266f57c91b6276f42b885b303a8985982792061d5e43843610726a3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/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/garyemerson/breadth_first_search_shortest_reach:/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] e8d7b45ae297e4ee509cd31755cb4599a1e8ce1630fd08270ca76cd2011f49c1
[INFO] running `"docker" "start" "-a" "e8d7b45ae297e4ee509cd31755cb4599a1e8ce1630fd08270ca76cd2011f49c1"`
[INFO] [stderr]    Compiling breadth_first_search_shortest_reach v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `num_edges`
[INFO] [stderr]   --> src/main.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     num_edges: i32,
[INFO] [stderr]    |     ^^^^^^^^^ help: consider prefixing with an underscore: `_num_edges`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `"docker" "inspect" "e8d7b45ae297e4ee509cd31755cb4599a1e8ce1630fd08270ca76cd2011f49c1"`
[INFO] running `"docker" "rm" "-f" "e8d7b45ae297e4ee509cd31755cb4599a1e8ce1630fd08270ca76cd2011f49c1"`
[INFO] [stdout] e8d7b45ae297e4ee509cd31755cb4599a1e8ce1630fd08270ca76cd2011f49c1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/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/garyemerson/breadth_first_search_shortest_reach:/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] 459428f3d7d63c4eb7de0ae7f81cf5cd9a2c52c2d5902ebc562e8cd0f0a686d8
[INFO] running `"docker" "start" "-a" "459428f3d7d63c4eb7de0ae7f81cf5cd9a2c52c2d5902ebc562e8cd0f0a686d8"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/breadth_first_search_shortest_reach-cc59850cc7dc481f
[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" "459428f3d7d63c4eb7de0ae7f81cf5cd9a2c52c2d5902ebc562e8cd0f0a686d8"`
[INFO] running `"docker" "rm" "-f" "459428f3d7d63c4eb7de0ae7f81cf5cd9a2c52c2d5902ebc562e8cd0f0a686d8"`
[INFO] [stdout] 459428f3d7d63c4eb7de0ae7f81cf5cd9a2c52c2d5902ebc562e8cd0f0a686d8