[INFO] updating cached repository aleozlx/alg-matching
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/aleozlx/alg-matching
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/aleozlx/alg-matching" "work/ex/beta-1.37-6/sources/1.36.0/gh/aleozlx/alg-matching"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/aleozlx/alg-matching'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/aleozlx/alg-matching" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/aleozlx/alg-matching"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/aleozlx/alg-matching'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f7b8757bdcb242b5e3a9841bf6085ae47be32091
[INFO] sha for GitHub repo aleozlx/alg-matching: f7b8757bdcb242b5e3a9841bf6085ae47be32091
[INFO] validating manifest of aleozlx/alg-matching on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of aleozlx/alg-matching on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing aleozlx/alg-matching
[INFO] finished frobbing aleozlx/alg-matching
[INFO] frobbed toml for aleozlx/alg-matching written to work/ex/beta-1.37-6/sources/1.36.0/gh/aleozlx/alg-matching/Cargo.toml
[INFO] started frobbing aleozlx/alg-matching
[INFO] finished frobbing aleozlx/alg-matching
[INFO] frobbed toml for aleozlx/alg-matching written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/aleozlx/alg-matching/Cargo.toml
[INFO] crate aleozlx/alg-matching already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing aleozlx/alg-matching against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/aleozlx/alg-matching:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 1c0c491f1937659cfdb607ebd199372494f46e70db5bc0b96036955b23872a6b
[INFO] running `"docker" "start" "-a" "1c0c491f1937659cfdb607ebd199372494f46e70db5bc0b96036955b23872a6b"`
[INFO] [stderr]    Compiling alg-matching v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]   --> src/main.rs:70:1
[INFO] [stderr]    |
[INFO] [stderr] 70 | / macro_rules! unweighted_graph(
[INFO] [stderr] 71 | |     { $($u:expr => [ $($v:expr),+ ]),+ } => {
[INFO] [stderr] 72 | |         {
[INFO] [stderr] 73 | |             let mut g = AdjGraph { adj: HashMap::new() };
[INFO] [stderr] ...  |
[INFO] [stderr] 79 | |     };
[INFO] [stderr] 80 | | );
[INFO] [stderr]    | |__^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_macros)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]    --> src/main.rs:186:9
[INFO] [stderr]     |
[INFO] [stderr] 186 |     let f: AdjFlowI32<i32, FlowEdgeI32> = AdjFlowI32{ g: AdjGraph::new() };
[INFO] [stderr]     |         ^ help: consider prefixing with an underscore: `_f`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `res`
[INFO] [stderr]    --> src/main.rs:116:13
[INFO] [stderr]     |
[INFO] [stderr] 116 |         let res = self.residual_graph();
[INFO] [stderr]     |             ^^^ help: consider prefixing with an underscore: `_res`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]    --> src/main.rs:115:43
[INFO] [stderr]     |
[INFO] [stderr] 115 |     fn edmonds_karp_maxflow<'g>(&'g self, s: &'g V, t: &'g V) -> Self {
[INFO] [stderr]     |                                           ^ help: consider prefixing with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]    --> src/main.rs:115:53
[INFO] [stderr]     |
[INFO] [stderr] 115 |     fn edmonds_karp_maxflow<'g>(&'g self, s: &'g V, t: &'g V) -> Self {
[INFO] [stderr]     |                                                     ^ help: consider prefixing with an underscore: `_t`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.93s
[INFO] running `"docker" "inspect" "1c0c491f1937659cfdb607ebd199372494f46e70db5bc0b96036955b23872a6b"`
[INFO] running `"docker" "rm" "-f" "1c0c491f1937659cfdb607ebd199372494f46e70db5bc0b96036955b23872a6b"`
[INFO] [stdout] 1c0c491f1937659cfdb607ebd199372494f46e70db5bc0b96036955b23872a6b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/aleozlx/alg-matching:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] cebe7c60556e9c1c699b38054ad70c0c0a78a0016db8837ab0cbe8533f42dcfc
[INFO] running `"docker" "start" "-a" "cebe7c60556e9c1c699b38054ad70c0c0a78a0016db8837ab0cbe8533f42dcfc"`
[INFO] [stderr]    Compiling alg-matching v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]    --> src/main.rs:186:9
[INFO] [stderr]     |
[INFO] [stderr] 186 |     let f: AdjFlowI32<i32, FlowEdgeI32> = AdjFlowI32{ g: AdjGraph::new() };
[INFO] [stderr]     |         ^ help: consider prefixing with an underscore: `_f`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `res`
[INFO] [stderr]    --> src/main.rs:116:13
[INFO] [stderr]     |
[INFO] [stderr] 116 |         let res = self.residual_graph();
[INFO] [stderr]     |             ^^^ help: consider prefixing with an underscore: `_res`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]    --> src/main.rs:115:43
[INFO] [stderr]     |
[INFO] [stderr] 115 |     fn edmonds_karp_maxflow<'g>(&'g self, s: &'g V, t: &'g V) -> Self {
[INFO] [stderr]     |                                           ^ help: consider prefixing with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]    --> src/main.rs:115:53
[INFO] [stderr]     |
[INFO] [stderr] 115 |     fn edmonds_karp_maxflow<'g>(&'g self, s: &'g V, t: &'g V) -> Self {
[INFO] [stderr]     |                                                     ^ help: consider prefixing with an underscore: `_t`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.84s
[INFO] running `"docker" "inspect" "cebe7c60556e9c1c699b38054ad70c0c0a78a0016db8837ab0cbe8533f42dcfc"`
[INFO] running `"docker" "rm" "-f" "cebe7c60556e9c1c699b38054ad70c0c0a78a0016db8837ab0cbe8533f42dcfc"`
[INFO] [stdout] cebe7c60556e9c1c699b38054ad70c0c0a78a0016db8837ab0cbe8533f42dcfc
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/aleozlx/alg-matching:/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] f78a15ca70c93794f35c7306f8631cd4f071a8c1df418a177ca24a7822e7f56a
[INFO] running `"docker" "start" "-a" "f78a15ca70c93794f35c7306f8631cd4f071a8c1df418a177ca24a7822e7f56a"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.49s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/alg_matching-89ed2be3ed640f6f
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test test_optimal_path ... ok
[INFO] [stdout] test test_no_path ... ok
[INFO] [stdout] test test_trivial_path2 ... ok
[INFO] [stdout] test test_trivial_path3 ... ok
[INFO] [stdout] test test_trivial_path1 ... ok
[INFO] [stdout] test test_empty_graph ... ok
[INFO] [stdout] test test_unique_path ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "f78a15ca70c93794f35c7306f8631cd4f071a8c1df418a177ca24a7822e7f56a"`
[INFO] running `"docker" "rm" "-f" "f78a15ca70c93794f35c7306f8631cd4f071a8c1df418a177ca24a7822e7f56a"`
[INFO] [stdout] f78a15ca70c93794f35c7306f8631cd4f071a8c1df418a177ca24a7822e7f56a