[INFO] fetching crate dograph 0.8.4...
[INFO] testing dograph-0.8.4 against master#2fd6efc32704647e64d3d646d21c4c68eae100e4 for pr-149852-1
[INFO] extracting crate dograph 0.8.4 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate dograph 0.8.4
[INFO] finished tweaking crates.io crate dograph 0.8.4
[INFO] tweaked toml for crates.io crate dograph 0.8.4 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate dograph 0.8.4 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 27 packages to latest compatible versions
[INFO] [stderr]       Adding fixedbitset v0.4.2 (available: v0.5.7)
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.2)
[INFO] [stderr]       Adding rand_distr v0.4.3 (available: v0.5.1)
[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]  Downloading crates ...
[INFO] [stderr]   Downloaded env_logger v0.8.4
[INFO] [stderr]   Downloaded fixedbitset v0.4.2
[INFO] [stderr]   Downloaded libm v0.2.15
[INFO] [stderr]   Downloaded quickcheck v1.0.3
[INFO] [stderr]   Downloaded rand_core v0.6.4
[INFO] [stderr]   Downloaded rand_chacha v0.3.1
[INFO] [stderr]   Downloaded rand_distr v0.4.3
[INFO] [stderr]   Downloaded rand v0.8.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a77b47bbc686b52a3bf898a287bd4f81fee39fc8d968639c47c3ea8d7a08a01f
[INFO] running `Command { std: "docker" "start" "-a" "a77b47bbc686b52a3bf898a287bd4f81fee39fc8d968639c47c3ea8d7a08a01f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a77b47bbc686b52a3bf898a287bd4f81fee39fc8d968639c47c3ea8d7a08a01f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a77b47bbc686b52a3bf898a287bd4f81fee39fc8d968639c47c3ea8d7a08a01f", kill_on_drop: false }`
[INFO] [stdout] a77b47bbc686b52a3bf898a287bd4f81fee39fc8d968639c47c3ea8d7a08a01f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ee894cf569a1128d1d8189dd6298eb71b108a2d39a8e293738564b0558c488f7
[INFO] running `Command { std: "docker" "start" "-a" "ee894cf569a1128d1d8189dd6298eb71b108a2d39a8e293738564b0558c488f7", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.180
[INFO] [stderr]    Compiling zerocopy v0.8.33
[INFO] [stderr]    Compiling cfg-if v1.0.4
[INFO] [stderr]    Compiling memchr v2.7.6
[INFO] [stderr]    Compiling regex-syntax v0.8.8
[INFO] [stderr]    Compiling autocfg v1.5.0
[INFO] [stderr]    Compiling libm v0.2.15
[INFO] [stderr]    Compiling log v0.4.29
[INFO] [stderr]    Compiling fixedbitset v0.4.2
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling aho-corasick v1.1.4
[INFO] [stderr]    Compiling getrandom v0.2.17
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling regex-automata v0.4.13
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling rand_distr v0.4.3
[INFO] [stderr]    Compiling regex v1.12.2
[INFO] [stderr]    Compiling env_logger v0.8.4
[INFO] [stderr]    Compiling quickcheck v1.0.3
[INFO] [stderr]    Compiling dograph v0.8.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/traversal.rs:54:34
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub fn iter_descendants_bfs(dag: &DirectedAcyclicGraph, vertex: usize) -> BfsVerticesIterator {
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^^^                    ^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                                  |
[INFO] [stdout]    |                                  the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub fn iter_descendants_bfs(dag: &DirectedAcyclicGraph, vertex: usize) -> BfsVerticesIterator<'_> {
[INFO] [stdout]    |                                                                                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/traversal.rs:63:31
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub fn iter_vertices_bfs(dag: &DirectedAcyclicGraph) -> BfsVerticesIterator {
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^     ^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                               |
[INFO] [stdout]    |                               the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub fn iter_vertices_bfs(dag: &DirectedAcyclicGraph) -> BfsVerticesIterator<'_> {
[INFO] [stdout]    |                                                                            ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/traversal.rs:96:34
[INFO] [stdout]    |
[INFO] [stdout] 96 | pub fn iter_descendants_dfs(dag: &DirectedAcyclicGraph, vertex: usize) -> DfsVerticesIterator {
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^^^                    ^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                                  |
[INFO] [stdout]    |                                  the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 96 | pub fn iter_descendants_dfs(dag: &DirectedAcyclicGraph, vertex: usize) -> DfsVerticesIterator<'_> {
[INFO] [stdout]    |                                                                                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/traversal.rs:105:31
[INFO] [stdout]     |
[INFO] [stdout] 105 | pub fn iter_vertices_dfs(dag: &DirectedAcyclicGraph) -> DfsVerticesIterator {
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^^^^     ^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                               |
[INFO] [stdout]     |                               the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 105 | pub fn iter_vertices_dfs(dag: &DirectedAcyclicGraph) -> DfsVerticesIterator<'_> {
[INFO] [stdout]     |                                                                            ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/traversal.rs:155:10
[INFO] [stdout]     |
[INFO] [stdout] 155 |     dag: &DirectedAcyclicGraph,
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^^^^^^ the lifetime is elided here
[INFO] [stdout] 156 |     vertex: usize,
[INFO] [stdout] 157 | ) -> DfsPostOrderVerticesIterator {
[INFO] [stdout]     |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 157 | ) -> DfsPostOrderVerticesIterator<'_> {
[INFO] [stdout]     |                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/traversal.rs:167:42
[INFO] [stdout]     |
[INFO] [stdout] 167 | pub fn iter_vertices_dfs_post_order(dag: &DirectedAcyclicGraph) -> DfsPostOrderVerticesIterator {
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 167 | pub fn iter_vertices_dfs_post_order(dag: &DirectedAcyclicGraph) -> DfsPostOrderVerticesIterator<'_> {
[INFO] [stdout]     |                                                                                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/traversal.rs:213:39
[INFO] [stdout]     |
[INFO] [stdout] 213 | pub fn iter_edges_dfs_post_order(dag: &DirectedAcyclicGraph) -> DfsPostOrderEdgesIterator {
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^^^^^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                                       |
[INFO] [stdout]     |                                       the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 213 | pub fn iter_edges_dfs_post_order(dag: &DirectedAcyclicGraph) -> DfsPostOrderEdgesIterator<'_> {
[INFO] [stdout]     |                                                                                          ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.21s
[INFO] running `Command { std: "docker" "inspect" "ee894cf569a1128d1d8189dd6298eb71b108a2d39a8e293738564b0558c488f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee894cf569a1128d1d8189dd6298eb71b108a2d39a8e293738564b0558c488f7", kill_on_drop: false }`
[INFO] [stdout] ee894cf569a1128d1d8189dd6298eb71b108a2d39a8e293738564b0558c488f7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 367d89e724a0b891eb073e37622029c333de29ec0155f58820fc4c1871d68fd3
[INFO] running `Command { std: "docker" "start" "-a" "367d89e724a0b891eb073e37622029c333de29ec0155f58820fc4c1871d68fd3", kill_on_drop: false }`
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/traversal.rs:54:34
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub fn iter_descendants_bfs(dag: &DirectedAcyclicGraph, vertex: usize) -> BfsVerticesIterator {
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^^^                    ^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                                  |
[INFO] [stdout]    |                                  the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub fn iter_descendants_bfs(dag: &DirectedAcyclicGraph, vertex: usize) -> BfsVerticesIterator<'_> {
[INFO] [stdout]    |                                                                                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/traversal.rs:63:31
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub fn iter_vertices_bfs(dag: &DirectedAcyclicGraph) -> BfsVerticesIterator {
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^     ^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                               |
[INFO] [stdout]    |                               the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub fn iter_vertices_bfs(dag: &DirectedAcyclicGraph) -> BfsVerticesIterator<'_> {
[INFO] [stdout]    |                                                                            ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/traversal.rs:96:34
[INFO] [stdout]    |
[INFO] [stdout] 96 | pub fn iter_descendants_dfs(dag: &DirectedAcyclicGraph, vertex: usize) -> DfsVerticesIterator {
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^^^                    ^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                                  |
[INFO] [stdout]    |                                  the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 96 | pub fn iter_descendants_dfs(dag: &DirectedAcyclicGraph, vertex: usize) -> DfsVerticesIterator<'_> {
[INFO] [stdout]    |                                                                                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/traversal.rs:105:31
[INFO] [stdout]     |
[INFO] [stdout] 105 | pub fn iter_vertices_dfs(dag: &DirectedAcyclicGraph) -> DfsVerticesIterator {
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^^^^     ^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                               |
[INFO] [stdout]     |                               the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 105 | pub fn iter_vertices_dfs(dag: &DirectedAcyclicGraph) -> DfsVerticesIterator<'_> {
[INFO] [stdout]     |                                                                            ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling dograph v0.8.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/traversal.rs:155:10
[INFO] [stdout]     |
[INFO] [stdout] 155 |     dag: &DirectedAcyclicGraph,
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^^^^^^ the lifetime is elided here
[INFO] [stdout] 156 |     vertex: usize,
[INFO] [stdout] 157 | ) -> DfsPostOrderVerticesIterator {
[INFO] [stdout]     |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 157 | ) -> DfsPostOrderVerticesIterator<'_> {
[INFO] [stdout]     |                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/traversal.rs:167:42
[INFO] [stdout]     |
[INFO] [stdout] 167 | pub fn iter_vertices_dfs_post_order(dag: &DirectedAcyclicGraph) -> DfsPostOrderVerticesIterator {
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 167 | pub fn iter_vertices_dfs_post_order(dag: &DirectedAcyclicGraph) -> DfsPostOrderVerticesIterator<'_> {
[INFO] [stdout]     |                                                                                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/traversal.rs:213:39
[INFO] [stdout]     |
[INFO] [stdout] 213 | pub fn iter_edges_dfs_post_order(dag: &DirectedAcyclicGraph) -> DfsPostOrderEdgesIterator {
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^^^^^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                                       |
[INFO] [stdout]     |                                       the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 213 | pub fn iter_edges_dfs_post_order(dag: &DirectedAcyclicGraph) -> DfsPostOrderEdgesIterator<'_> {
[INFO] [stdout]     |                                                                                          ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/traversal.rs:54:34
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub fn iter_descendants_bfs(dag: &DirectedAcyclicGraph, vertex: usize) -> BfsVerticesIterator {
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^^^                    ^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                                  |
[INFO] [stdout]    |                                  the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub fn iter_descendants_bfs(dag: &DirectedAcyclicGraph, vertex: usize) -> BfsVerticesIterator<'_> {
[INFO] [stdout]    |                                                                                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/traversal.rs:63:31
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub fn iter_vertices_bfs(dag: &DirectedAcyclicGraph) -> BfsVerticesIterator {
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^     ^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                               |
[INFO] [stdout]    |                               the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub fn iter_vertices_bfs(dag: &DirectedAcyclicGraph) -> BfsVerticesIterator<'_> {
[INFO] [stdout]    |                                                                            ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/traversal.rs:96:34
[INFO] [stdout]    |
[INFO] [stdout] 96 | pub fn iter_descendants_dfs(dag: &DirectedAcyclicGraph, vertex: usize) -> DfsVerticesIterator {
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^^^                    ^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                                  |
[INFO] [stdout]    |                                  the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 96 | pub fn iter_descendants_dfs(dag: &DirectedAcyclicGraph, vertex: usize) -> DfsVerticesIterator<'_> {
[INFO] [stdout]    |                                                                                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/traversal.rs:105:31
[INFO] [stdout]     |
[INFO] [stdout] 105 | pub fn iter_vertices_dfs(dag: &DirectedAcyclicGraph) -> DfsVerticesIterator {
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^^^^     ^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                               |
[INFO] [stdout]     |                               the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 105 | pub fn iter_vertices_dfs(dag: &DirectedAcyclicGraph) -> DfsVerticesIterator<'_> {
[INFO] [stdout]     |                                                                            ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/traversal.rs:155:10
[INFO] [stdout]     |
[INFO] [stdout] 155 |     dag: &DirectedAcyclicGraph,
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^^^^^^ the lifetime is elided here
[INFO] [stdout] 156 |     vertex: usize,
[INFO] [stdout] 157 | ) -> DfsPostOrderVerticesIterator {
[INFO] [stdout]     |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 157 | ) -> DfsPostOrderVerticesIterator<'_> {
[INFO] [stdout]     |                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/traversal.rs:167:42
[INFO] [stdout]     |
[INFO] [stdout] 167 | pub fn iter_vertices_dfs_post_order(dag: &DirectedAcyclicGraph) -> DfsPostOrderVerticesIterator {
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 167 | pub fn iter_vertices_dfs_post_order(dag: &DirectedAcyclicGraph) -> DfsPostOrderVerticesIterator<'_> {
[INFO] [stdout]     |                                                                                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/traversal.rs:213:39
[INFO] [stdout]     |
[INFO] [stdout] 213 | pub fn iter_edges_dfs_post_order(dag: &DirectedAcyclicGraph) -> DfsPostOrderEdgesIterator {
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^^^^^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                                       |
[INFO] [stdout]     |                                       the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 213 | pub fn iter_edges_dfs_post_order(dag: &DirectedAcyclicGraph) -> DfsPostOrderEdgesIterator<'_> {
[INFO] [stdout]     |                                                                                          ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.09s
[INFO] running `Command { std: "docker" "inspect" "367d89e724a0b891eb073e37622029c333de29ec0155f58820fc4c1871d68fd3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "367d89e724a0b891eb073e37622029c333de29ec0155f58820fc4c1871d68fd3", kill_on_drop: false }`
[INFO] [stdout] 367d89e724a0b891eb073e37622029c333de29ec0155f58820fc4c1871d68fd3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 490c664649dff1439929615e9db6d67f43691ba17a3e62ae341dd585583ef586
[INFO] running `Command { std: "docker" "start" "-a" "490c664649dff1439929615e9db6d67f43691ba17a3e62ae341dd585583ef586", kill_on_drop: false }`
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/traversal.rs:54:34
[INFO] [stderr]    |
[INFO] [stderr] 54 | pub fn iter_descendants_bfs(dag: &DirectedAcyclicGraph, vertex: usize) -> BfsVerticesIterator {
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^^^^^^^^^                    ^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |                                  |
[INFO] [stderr]    |                                  the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 54 | pub fn iter_descendants_bfs(dag: &DirectedAcyclicGraph, vertex: usize) -> BfsVerticesIterator<'_> {
[INFO] [stderr]    |                                                                                              ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/traversal.rs:63:31
[INFO] [stderr]    |
[INFO] [stderr] 63 | pub fn iter_vertices_bfs(dag: &DirectedAcyclicGraph) -> BfsVerticesIterator {
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^^^^^     ^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |                               |
[INFO] [stderr]    |                               the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 63 | pub fn iter_vertices_bfs(dag: &DirectedAcyclicGraph) -> BfsVerticesIterator<'_> {
[INFO] [stderr]    |                                                                            ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/traversal.rs:96:34
[INFO] [stderr]    |
[INFO] [stderr] 96 | pub fn iter_descendants_dfs(dag: &DirectedAcyclicGraph, vertex: usize) -> DfsVerticesIterator {
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^^^^^^^^^                    ^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |                                  |
[INFO] [stderr]    |                                  the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 96 | pub fn iter_descendants_dfs(dag: &DirectedAcyclicGraph, vertex: usize) -> DfsVerticesIterator<'_> {
[INFO] [stderr]    |                                                                                              ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/traversal.rs:105:31
[INFO] [stderr]     |
[INFO] [stderr] 105 | pub fn iter_vertices_dfs(dag: &DirectedAcyclicGraph) -> DfsVerticesIterator {
[INFO] [stderr]     |                               ^^^^^^^^^^^^^^^^^^^^^     ^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |                               |
[INFO] [stderr]     |                               the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 105 | pub fn iter_vertices_dfs(dag: &DirectedAcyclicGraph) -> DfsVerticesIterator<'_> {
[INFO] [stderr]     |                                                                            ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/traversal.rs:155:10
[INFO] [stderr]     |
[INFO] [stderr] 155 |     dag: &DirectedAcyclicGraph,
[INFO] [stderr]     |          ^^^^^^^^^^^^^^^^^^^^^ the lifetime is elided here
[INFO] [stderr] 156 |     vertex: usize,
[INFO] [stderr] 157 | ) -> DfsPostOrderVerticesIterator {
[INFO] [stderr]     |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 157 | ) -> DfsPostOrderVerticesIterator<'_> {
[INFO] [stderr]     |                                  ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/traversal.rs:167:42
[INFO] [stderr]     |
[INFO] [stderr] 167 | pub fn iter_vertices_dfs_post_order(dag: &DirectedAcyclicGraph) -> DfsPostOrderVerticesIterator {
[INFO] [stderr]     |                                          ^^^^^^^^^^^^^^^^^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |                                          |
[INFO] [stderr]     |                                          the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 167 | pub fn iter_vertices_dfs_post_order(dag: &DirectedAcyclicGraph) -> DfsPostOrderVerticesIterator<'_> {
[INFO] [stderr]     |                                                                                                ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/traversal.rs:213:39
[INFO] [stderr]     |
[INFO] [stderr] 213 | pub fn iter_edges_dfs_post_order(dag: &DirectedAcyclicGraph) -> DfsPostOrderEdgesIterator {
[INFO] [stderr]     |                                       ^^^^^^^^^^^^^^^^^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |                                       |
[INFO] [stderr]     |                                       the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 213 | pub fn iter_edges_dfs_post_order(dag: &DirectedAcyclicGraph) -> DfsPostOrderEdgesIterator<'_> {
[INFO] [stderr]     |                                                                                          ++++
[INFO] [stderr] 
[INFO] [stderr] warning: `dograph` (lib) generated 7 warnings (run `cargo fix --lib -p dograph` to apply 7 suggestions)
[INFO] [stderr] warning: `dograph` (lib test) generated 7 warnings (7 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/dograph-bf965dc3a7f6dc99)
[INFO] [stdout] 
[INFO] [stdout] running 12 tests
[INFO] [stdout] test strictly_upper_triangular_logical_matrix::tests::test_matrix_iterator ... ok
[INFO] [stdout] test tests::divisibility_poset_12_children ... ok
[INFO] [stdout] test strictly_upper_triangular_logical_matrix::tests::index_computation_is_sane ... ok
[INFO] [stdout] test traversal::tests::divisibility_poset_of_12_dfs_descendants ... ok
[INFO] [stdout] test algorithm::tests::divisibility_poset_of_12_descendants ... ok
[INFO] [stdout] test tests::divisibility_poset_of_12_ordered_pairs ... ok
[INFO] [stdout] test tests::negative_test_smallest_dag - should panic ... ok
[INFO] [stdout] test strictly_upper_triangular_logical_matrix::tests::positive_test_3x3_matrix ... ok
[INFO] [stdout] test traversal::tests::traversals_equal_modulo_order ... ok
[INFO] [stdout] test tests::random_dag_reduces_to_nothing ... ok
[INFO] [stdout] test tests::integer_divisibility_poset_isomorphism ... ok
[INFO] [stdout] test algorithm::tests::transitive_closure_and_transitive_reduction_intersection_equals_transitive_reduction_modulo_order ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 12 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 3.30s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests dograph
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - DirectedAcyclicGraph::random (line 106) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - DirectedAcyclicGraph::random (line 106) stdout ----
[INFO] [stdout] error[E0432]: unresolved import `crate::DirectedAcyclicGraph`
[INFO] [stdout]    --> src/lib.rs:107:5
[INFO] [stdout]     |
[INFO] [stdout] 107 | use crate::DirectedAcyclicGraph;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ no `DirectedAcyclicGraph` in the root
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct instead
[INFO] [stdout]     |
[INFO] [stdout] 107 - use crate::DirectedAcyclicGraph;
[INFO] [stdout] 107 + use dograph::DirectedAcyclicGraph;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - DirectedAcyclicGraph::random (line 106)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.09s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "490c664649dff1439929615e9db6d67f43691ba17a3e62ae341dd585583ef586", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "490c664649dff1439929615e9db6d67f43691ba17a3e62ae341dd585583ef586", kill_on_drop: false }`
[INFO] [stdout] 490c664649dff1439929615e9db6d67f43691ba17a3e62ae341dd585583ef586
