[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/f7b8757bdcb242b5e3a9841bf6085ae47be32091 against master#2fd6efc32704647e64d3d646d21c4c68eae100e4 for pr-149852-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faleozlx%2Falg-matching" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[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-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/aleozlx/alg-matching on toolchain 2fd6efc32704647e64d3d646d21c4c68eae100e4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/aleozlx/alg-matching already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5265c3b8a49628bd3fd7e3eec7b2005a4216b83cfd2478cf83d22aff5ebff918
[INFO] running `Command { std: "docker" "start" "-a" "5265c3b8a49628bd3fd7e3eec7b2005a4216b83cfd2478cf83d22aff5ebff918", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5265c3b8a49628bd3fd7e3eec7b2005a4216b83cfd2478cf83d22aff5ebff918", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5265c3b8a49628bd3fd7e3eec7b2005a4216b83cfd2478cf83d22aff5ebff918", kill_on_drop: false }`
[INFO] [stdout] 5265c3b8a49628bd3fd7e3eec7b2005a4216b83cfd2478cf83d22aff5ebff918
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8abc8fe987c58041b478a305ee5b0b7f5c59d9b083598c1acc50359c54da240c
[INFO] running `Command { std: "docker" "start" "-a" "8abc8fe987c58041b478a305ee5b0b7f5c59d9b083598c1acc50359c54da240c", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[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)]` (part of `#[warn(unused)]`) 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<V, E>;
[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 <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn inner_graph<'g>(&'g self) -> &'g dyn Graph<V, E>;
[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<Graph<V, E> + '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 <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn residual_graph<'g>(&'g self) -> Box<dyn Graph<V, E> + '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<V, E> {
[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 <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 106 |     fn inner_graph<'g>(&'g self) -> &'g dyn Graph<V, E> {
[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<Graph<V, E> + '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 <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 110 |     fn residual_graph<'g>(&'g self) -> Box<dyn Graph<V, E> + 'g> {
[INFO] [stdout]     |                                            +++
[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]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[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: 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: `f`
[INFO] [stdout]    --> src/main.rs:186:9
[INFO] [stdout]     |
[INFO] [stdout] 186 |     let f: AdjFlowI32<i32, FlowEdgeI32> = AdjFlowI32{ g: AdjGraph::new() };
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Graph` is never used
[INFO] [stdout]  --> src/main.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 | trait Graph<V, E> {
[INFO] [stdout]   |       ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `capacity` and `flow` are never used
[INFO] [stdout]   --> src/main.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | trait FlowEdge<F> {
[INFO] [stdout]    |       -------- methods in this trait
[INFO] [stdout] 11 |     fn capacity(&self) -> F;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 12 |     fn flow(&self) -> F;
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Flow` is never used
[INFO] [stdout]   --> src/main.rs:15:7
[INFO] [stdout]    |
[INFO] [stdout] 15 | trait Flow<V, E, F>
[INFO] [stdout]    |       ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `adj` is never read
[INFO] [stdout]   --> src/main.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | struct AdjGraph<V, E>
[INFO] [stdout]    |        -------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 26 |     adj: HashMap<V, HashMap<V, E>>
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `cap` and `flow` are never read
[INFO] [stdout]   --> src/main.rs:83:5
[INFO] [stdout]    |
[INFO] [stdout] 82 | struct FlowEdgeI32 {
[INFO] [stdout]    |        ----------- fields in this struct
[INFO] [stdout] 83 |     cap: i32,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 84 |     flow: i32
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `g` is never read
[INFO] [stdout]    --> src/main.rs:100:5
[INFO] [stdout]     |
[INFO] [stdout]  97 | struct AdjFlowI32<V, E>
[INFO] [stdout]     |        ---------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 100 |     g: AdjGraph<V, E>
[INFO] [stdout]     |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.26s
[INFO] running `Command { std: "docker" "inspect" "8abc8fe987c58041b478a305ee5b0b7f5c59d9b083598c1acc50359c54da240c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8abc8fe987c58041b478a305ee5b0b7f5c59d9b083598c1acc50359c54da240c", kill_on_drop: false }`
[INFO] [stdout] 8abc8fe987c58041b478a305ee5b0b7f5c59d9b083598c1acc50359c54da240c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ec49b8796022b2113b472f47bce988215332284c5282ff2a97fc382f78bfa8d0
[INFO] running `Command { std: "docker" "start" "-a" "ec49b8796022b2113b472f47bce988215332284c5282ff2a97fc382f78bfa8d0", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[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<V, E>;
[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 <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn inner_graph<'g>(&'g self) -> &'g dyn Graph<V, E>;
[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<Graph<V, E> + '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 <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn residual_graph<'g>(&'g self) -> Box<dyn Graph<V, E> + '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<V, E> {
[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 <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 106 |     fn inner_graph<'g>(&'g self) -> &'g dyn Graph<V, E> {
[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<Graph<V, E> + '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 <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 110 |     fn residual_graph<'g>(&'g self) -> Box<dyn Graph<V, E> + 'g> {
[INFO] [stdout]     |                                            +++
[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]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[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: 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: `f`
[INFO] [stdout]    --> src/main.rs:186:9
[INFO] [stdout]     |
[INFO] [stdout] 186 |     let f: AdjFlowI32<i32, FlowEdgeI32> = AdjFlowI32{ g: AdjGraph::new() };
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `count_vertices` is never used
[INFO] [stdout]  --> src/main.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | trait Graph<V, E> {
[INFO] [stdout]   |       ----- method in this trait
[INFO] [stdout] 6 |     fn bfs_shortest_path<'g>(&'g self, s: &'g V, t: &'g V) -> Option<Vec<&'g V>>;
[INFO] [stdout] 7 |     fn count_vertices(&self) -> usize;
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `capacity` and `flow` are never used
[INFO] [stdout]   --> src/main.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | trait FlowEdge<F> {
[INFO] [stdout]    |       -------- methods in this trait
[INFO] [stdout] 11 |     fn capacity(&self) -> F;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 12 |     fn flow(&self) -> F;
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Flow` is never used
[INFO] [stdout]   --> src/main.rs:15:7
[INFO] [stdout]    |
[INFO] [stdout] 15 | trait Flow<V, E, F>
[INFO] [stdout]    |       ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `cap` and `flow` are never read
[INFO] [stdout]   --> src/main.rs:83:5
[INFO] [stdout]    |
[INFO] [stdout] 82 | struct FlowEdgeI32 {
[INFO] [stdout]    |        ----------- fields in this struct
[INFO] [stdout] 83 |     cap: i32,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 84 |     flow: i32
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `g` is never read
[INFO] [stdout]    --> src/main.rs:100:5
[INFO] [stdout]     |
[INFO] [stdout]  97 | struct AdjFlowI32<V, E>
[INFO] [stdout]     |        ---------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 100 |     g: AdjGraph<V, E>
[INFO] [stdout]     |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `Command { std: "docker" "inspect" "ec49b8796022b2113b472f47bce988215332284c5282ff2a97fc382f78bfa8d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec49b8796022b2113b472f47bce988215332284c5282ff2a97fc382f78bfa8d0", kill_on_drop: false }`
[INFO] [stdout] ec49b8796022b2113b472f47bce988215332284c5282ff2a97fc382f78bfa8d0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5e8ddb952eb7c08df182414e522cda5facc25aea3a73ac3871d79a803fc22d73
[INFO] running `Command { std: "docker" "start" "-a" "5e8ddb952eb7c08df182414e522cda5facc25aea3a73ac3871d79a803fc22d73", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[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<V, E>;
[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 <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stderr] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 18 |     fn inner_graph<'g>(&'g self) -> &'g dyn Graph<V, E>;
[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<Graph<V, E> + '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 <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 19 |     fn residual_graph<'g>(&'g self) -> Box<dyn Graph<V, E> + '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<V, E> {
[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 <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 106 |     fn inner_graph<'g>(&'g self) -> &'g dyn Graph<V, E> {
[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<Graph<V, E> + '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 <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 110 |     fn residual_graph<'g>(&'g self) -> Box<dyn Graph<V, E> + 'g> {
[INFO] [stderr]     |                                            +++
[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]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[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: 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: `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: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr] 
[INFO] [stderr] warning: method `count_vertices` is never used
[INFO] [stderr]  --> src/main.rs:7:8
[INFO] [stderr]   |
[INFO] [stderr] 5 | trait Graph<V, E> {
[INFO] [stderr]   |       ----- method in this trait
[INFO] [stderr] 6 |     fn bfs_shortest_path<'g>(&'g self, s: &'g V, t: &'g V) -> Option<Vec<&'g V>>;
[INFO] [stderr] 7 |     fn count_vertices(&self) -> usize;
[INFO] [stderr]   |        ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: methods `capacity` and `flow` are never used
[INFO] [stderr]   --> src/main.rs:11:8
[INFO] [stderr]    |
[INFO] [stderr] 10 | trait FlowEdge<F> {
[INFO] [stderr]    |       -------- methods in this trait
[INFO] [stderr] 11 |     fn capacity(&self) -> F;
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 12 |     fn flow(&self) -> F;
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait `Flow` is never used
[INFO] [stderr]   --> src/main.rs:15:7
[INFO] [stderr]    |
[INFO] [stderr] 15 | trait Flow<V, E, F>
[INFO] [stderr]    |       ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: fields `cap` and `flow` are never read
[INFO] [stderr]   --> src/main.rs:83:5
[INFO] [stderr]    |
[INFO] [stderr] 82 | struct FlowEdgeI32 {
[INFO] [stderr]    |        ----------- fields in this struct
[INFO] [stderr] 83 |     cap: i32,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 84 |     flow: i32
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `g` is never read
[INFO] [stderr]    --> src/main.rs:100:5
[INFO] [stderr]     |
[INFO] [stderr]  97 | struct AdjFlowI32<V, E>
[INFO] [stderr]     |        ---------- field in this struct
[INFO] [stderr] ...
[INFO] [stderr] 100 |     g: AdjGraph<V, E>
[INFO] [stderr]     |     ^
[INFO] [stderr] 
[INFO] [stderr] warning: `alg-matching` (bin "alg-matching" test) generated 13 warnings (run `cargo fix --bin "alg-matching" -p alg-matching --tests` to apply 8 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/alg_matching-934a12321fe70f48)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test test_empty_graph ... ok
[INFO] [stdout] test test_no_path ... ok
[INFO] [stdout] test test_trivial_path1 ... ok
[INFO] [stdout] test test_optimal_path ... 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" "5e8ddb952eb7c08df182414e522cda5facc25aea3a73ac3871d79a803fc22d73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e8ddb952eb7c08df182414e522cda5facc25aea3a73ac3871d79a803fc22d73", kill_on_drop: false }`
[INFO] [stdout] 5e8ddb952eb7c08df182414e522cda5facc25aea3a73ac3871d79a803fc22d73
