[INFO] cloning repository https://github.com/aleozlx/alg-matching [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/aleozlx/alg-matching" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faleozlx%2Falg-matching", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faleozlx%2Falg-matching'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] f7b8757bdcb242b5e3a9841bf6085ae47be32091 [INFO] testing aleozlx/alg-matching against beta-2022-04-10 for beta-1.61-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faleozlx%2Falg-matching" "/workspace/builds/worker-55/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-55/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/aleozlx/alg-matching on toolchain beta-2022-04-10 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/aleozlx/alg-matching [INFO] finished tweaking git repo https://github.com/aleozlx/alg-matching [INFO] tweaked toml for git repo https://github.com/aleozlx/alg-matching written to /workspace/builds/worker-55/source/Cargo.toml [INFO] crate git repo https://github.com/aleozlx/alg-matching already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] c5c025c24be96d4fe197571903f95418fd321418d16243f3f67d82da0530bd13 [INFO] running `Command { std: "docker" "start" "-a" "c5c025c24be96d4fe197571903f95418fd321418d16243f3f67d82da0530bd13", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c5c025c24be96d4fe197571903f95418fd321418d16243f3f67d82da0530bd13", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c5c025c24be96d4fe197571903f95418fd321418d16243f3f67d82da0530bd13", kill_on_drop: false }` [INFO] [stdout] c5c025c24be96d4fe197571903f95418fd321418d16243f3f67d82da0530bd13 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] da2fe1dc203079a3503afbd234ddaa75f6da28b0cace4b40347fa4688bea55ff [INFO] running `Command { std: "docker" "start" "-a" "da2fe1dc203079a3503afbd234ddaa75f6da28b0cace4b40347fa4688bea55ff", kill_on_drop: false }` [INFO] [stderr] Compiling alg-matching v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused macro definition: `unweighted_graph` [INFO] [stdout] --> src/main.rs:70:14 [INFO] [stdout] | [INFO] [stdout] 70 | macro_rules! unweighted_graph( [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_macros)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/main.rs:18:41 [INFO] [stdout] | [INFO] [stdout] 18 | fn inner_graph<'g>(&'g self) -> &'g Graph; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: use `dyn` [INFO] [stdout] | [INFO] [stdout] 18 - fn inner_graph<'g>(&'g self) -> &'g Graph; [INFO] [stdout] 18 + fn inner_graph<'g>(&'g self) -> &'g dyn Graph; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/main.rs:19:44 [INFO] [stdout] | [INFO] [stdout] 19 | fn residual_graph<'g>(&'g self) -> Box + 'g>; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: use `dyn` [INFO] [stdout] | [INFO] [stdout] 19 - fn residual_graph<'g>(&'g self) -> Box + 'g>; [INFO] [stdout] 19 + fn residual_graph<'g>(&'g self) -> Box + 'g>; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/main.rs:106:41 [INFO] [stdout] | [INFO] [stdout] 106 | fn inner_graph<'g>(&'g self) -> &'g Graph { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: use `dyn` [INFO] [stdout] | [INFO] [stdout] 106 - fn inner_graph<'g>(&'g self) -> &'g Graph { [INFO] [stdout] 106 + fn inner_graph<'g>(&'g self) -> &'g dyn Graph { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/main.rs:110:44 [INFO] [stdout] | [INFO] [stdout] 110 | fn residual_graph<'g>(&'g self) -> Box + 'g> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: use `dyn` [INFO] [stdout] | [INFO] [stdout] 110 - fn residual_graph<'g>(&'g self) -> Box + 'g> { [INFO] [stdout] 110 + fn residual_graph<'g>(&'g self) -> Box + 'g> { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/main.rs:186:9 [INFO] [stdout] | [INFO] [stdout] 186 | let f: AdjFlowI32 = AdjFlowI32{ g: AdjGraph::new() }; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `res` [INFO] [stdout] --> src/main.rs:116:13 [INFO] [stdout] | [INFO] [stdout] 116 | let res = self.residual_graph(); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_res` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/main.rs:115:43 [INFO] [stdout] | [INFO] [stdout] 115 | fn edmonds_karp_maxflow<'g>(&'g self, s: &'g V, t: &'g V) -> Self { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `t` [INFO] [stdout] --> src/main.rs:115:53 [INFO] [stdout] | [INFO] [stdout] 115 | fn edmonds_karp_maxflow<'g>(&'g self, s: &'g V, t: &'g V) -> Self { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 9 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 5.74s [INFO] running `Command { std: "docker" "inspect" "da2fe1dc203079a3503afbd234ddaa75f6da28b0cace4b40347fa4688bea55ff", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "da2fe1dc203079a3503afbd234ddaa75f6da28b0cace4b40347fa4688bea55ff", kill_on_drop: false }` [INFO] [stdout] da2fe1dc203079a3503afbd234ddaa75f6da28b0cace4b40347fa4688bea55ff [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c2d686a259c90537600a3236ab00a4cb95bd8ff8cbf30e7bbc58b075d3170f7d [INFO] running `Command { std: "docker" "start" "-a" "c2d686a259c90537600a3236ab00a4cb95bd8ff8cbf30e7bbc58b075d3170f7d", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling alg-matching v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/main.rs:18:41 [INFO] [stdout] | [INFO] [stdout] 18 | fn inner_graph<'g>(&'g self) -> &'g Graph; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: use `dyn` [INFO] [stdout] | [INFO] [stdout] 18 - fn inner_graph<'g>(&'g self) -> &'g Graph; [INFO] [stdout] 18 + fn inner_graph<'g>(&'g self) -> &'g dyn Graph; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/main.rs:19:44 [INFO] [stdout] | [INFO] [stdout] 19 | fn residual_graph<'g>(&'g self) -> Box + 'g>; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: use `dyn` [INFO] [stdout] | [INFO] [stdout] 19 - fn residual_graph<'g>(&'g self) -> Box + 'g>; [INFO] [stdout] 19 + fn residual_graph<'g>(&'g self) -> Box + 'g>; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/main.rs:106:41 [INFO] [stdout] | [INFO] [stdout] 106 | fn inner_graph<'g>(&'g self) -> &'g Graph { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: use `dyn` [INFO] [stdout] | [INFO] [stdout] 106 - fn inner_graph<'g>(&'g self) -> &'g Graph { [INFO] [stdout] 106 + fn inner_graph<'g>(&'g self) -> &'g dyn Graph { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/main.rs:110:44 [INFO] [stdout] | [INFO] [stdout] 110 | fn residual_graph<'g>(&'g self) -> Box + 'g> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: use `dyn` [INFO] [stdout] | [INFO] [stdout] 110 - fn residual_graph<'g>(&'g self) -> Box + 'g> { [INFO] [stdout] 110 + fn residual_graph<'g>(&'g self) -> Box + 'g> { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/main.rs:186:9 [INFO] [stdout] | [INFO] [stdout] 186 | let f: AdjFlowI32 = AdjFlowI32{ g: AdjGraph::new() }; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `res` [INFO] [stdout] --> src/main.rs:116:13 [INFO] [stdout] | [INFO] [stdout] 116 | let res = self.residual_graph(); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_res` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/main.rs:115:43 [INFO] [stdout] | [INFO] [stdout] 115 | fn edmonds_karp_maxflow<'g>(&'g self, s: &'g V, t: &'g V) -> Self { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `t` [INFO] [stdout] --> src/main.rs:115:53 [INFO] [stdout] | [INFO] [stdout] 115 | fn edmonds_karp_maxflow<'g>(&'g self, s: &'g V, t: &'g V) -> Self { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 1.44s [INFO] [stderr] Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/alg_matching-8a61310761104115) [INFO] running `Command { std: "docker" "inspect" "c2d686a259c90537600a3236ab00a4cb95bd8ff8cbf30e7bbc58b075d3170f7d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c2d686a259c90537600a3236ab00a4cb95bd8ff8cbf30e7bbc58b075d3170f7d", kill_on_drop: false }` [INFO] [stdout] c2d686a259c90537600a3236ab00a4cb95bd8ff8cbf30e7bbc58b075d3170f7d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 532fa66cb9c35d954761224226a3edcb5d2db83827bbeb3f579be0bbb1079263 [INFO] running `Command { std: "docker" "start" "-a" "532fa66cb9c35d954761224226a3edcb5d2db83827bbeb3f579be0bbb1079263", kill_on_drop: false }` [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/main.rs:18:41 [INFO] [stderr] | [INFO] [stderr] 18 | fn inner_graph<'g>(&'g self) -> &'g Graph; [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stderr] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stderr] = note: for more information, see [INFO] [stderr] help: use `dyn` [INFO] [stderr] | [INFO] [stderr] 18 - fn inner_graph<'g>(&'g self) -> &'g Graph; [INFO] [stderr] 18 + fn inner_graph<'g>(&'g self) -> &'g dyn Graph; [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/main.rs:19:44 [INFO] [stderr] | [INFO] [stderr] 19 | fn residual_graph<'g>(&'g self) -> Box + 'g>; [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stderr] = note: for more information, see [INFO] [stderr] help: use `dyn` [INFO] [stderr] | [INFO] [stderr] 19 - fn residual_graph<'g>(&'g self) -> Box + 'g>; [INFO] [stderr] 19 + fn residual_graph<'g>(&'g self) -> Box + 'g>; [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/main.rs:106:41 [INFO] [stderr] | [INFO] [stderr] 106 | fn inner_graph<'g>(&'g self) -> &'g Graph { [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stderr] = note: for more information, see [INFO] [stderr] help: use `dyn` [INFO] [stderr] | [INFO] [stderr] 106 - fn inner_graph<'g>(&'g self) -> &'g Graph { [INFO] [stderr] 106 + fn inner_graph<'g>(&'g self) -> &'g dyn Graph { [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/main.rs:110:44 [INFO] [stderr] | [INFO] [stderr] 110 | fn residual_graph<'g>(&'g self) -> Box + 'g> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stderr] = note: for more information, see [INFO] [stderr] help: use `dyn` [INFO] [stderr] | [INFO] [stderr] 110 - fn residual_graph<'g>(&'g self) -> Box + 'g> { [INFO] [stderr] 110 + fn residual_graph<'g>(&'g self) -> Box + 'g> { [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: unused variable: `f` [INFO] [stderr] --> src/main.rs:186:9 [INFO] [stderr] | [INFO] [stderr] 186 | let f: AdjFlowI32 = AdjFlowI32{ g: AdjGraph::new() }; [INFO] [stderr] | ^ help: if this is intentional, prefix it 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: if this is intentional, prefix it 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: if this is intentional, prefix it 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: if this is intentional, prefix it with an underscore: `_t` [INFO] [stderr] [INFO] [stderr] warning: `alg-matching` (bin "alg-matching" test) generated 8 warnings [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.01s [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/alg_matching-8a61310761104115) [INFO] [stdout] [INFO] [stdout] running 7 tests [INFO] [stdout] test test_empty_graph ... ok [INFO] [stdout] test test_optimal_path ... ok [INFO] [stdout] test test_no_path ... ok [INFO] [stdout] test test_trivial_path1 ... ok [INFO] [stdout] test test_trivial_path2 ... ok [INFO] [stdout] test test_trivial_path3 ... 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; finished in 0.00s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "532fa66cb9c35d954761224226a3edcb5d2db83827bbeb3f579be0bbb1079263", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "532fa66cb9c35d954761224226a3edcb5d2db83827bbeb3f579be0bbb1079263", kill_on_drop: false }` [INFO] [stdout] 532fa66cb9c35d954761224226a3edcb5d2db83827bbeb3f579be0bbb1079263