[INFO] fetching crate graph-algo-ptas 0.1.0...
[INFO] testing graph-algo-ptas-0.1.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate graph-algo-ptas 0.1.0 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate graph-algo-ptas 0.1.0
[INFO] finished tweaking crates.io crate graph-algo-ptas 0.1.0
[INFO] tweaked toml for crates.io crate graph-algo-ptas 0.1.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate graph-algo-ptas 0.1.0 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate graph-algo-ptas 0.1.0 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7c281a96ce1c5a9df73cc39ffd6f0447f0de0b396450cb07328cb5015add87cb
[INFO] running `Command { std: "docker" "start" "-a" "7c281a96ce1c5a9df73cc39ffd6f0447f0de0b396450cb07328cb5015add87cb", kill_on_drop: false }`
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[INFO] [stderr]    Compiling arboretum-td v0.1.0
[INFO] [stderr]    Compiling graph-algo-ptas v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/data_structure/list_graph.rs:185:25
[INFO] [stdout]     |
[INFO] [stdout] 185 |     pub fn node_indexes(&self) -> NodeIndexIter {
[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] 185 |     pub fn node_indexes(&self) -> NodeIndexIter<'_> {
[INFO] [stdout]     |                                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/data_structure/list_graph.rs:194:25
[INFO] [stdout]     |
[INFO] [stdout] 194 |     pub fn edge_indexes(&self) -> EdgeIndexIter {
[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] 194 |     pub fn edge_indexes(&self) -> EdgeIndexIter<'_> {
[INFO] [stdout]     |                                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/embedding/maximal_planar/phase2.rs:11:22
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub fn new(dcel: &mut LinkGraph) -> Phase2 {
[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] 11 |     pub fn new(dcel: &mut LinkGraph) -> Phase2<'_> {
[INFO] [stdout]    |                                               ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.71s
[INFO] running `Command { std: "docker" "inspect" "7c281a96ce1c5a9df73cc39ffd6f0447f0de0b396450cb07328cb5015add87cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c281a96ce1c5a9df73cc39ffd6f0447f0de0b396450cb07328cb5015add87cb", kill_on_drop: false }`
[INFO] [stdout] 7c281a96ce1c5a9df73cc39ffd6f0447f0de0b396450cb07328cb5015add87cb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7009b848f71abdb202762e6a8e835cc3ffb08be099325218704717c66be4afdb
[INFO] running `Command { std: "docker" "start" "-a" "7009b848f71abdb202762e6a8e835cc3ffb08be099325218704717c66be4afdb", kill_on_drop: false }`
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[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling serde_derive v1.0.143
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[INFO] [stderr]    Compiling plotters-svg v0.3.2
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[INFO] [stderr]    Compiling itoa v0.4.8
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[INFO] [stderr]    Compiling walkdir v2.3.2
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[INFO] [stderr]    Compiling plotters v0.3.2
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling crossbeam-deque v0.8.2
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling regex v1.6.0
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling num v0.4.0
[INFO] [stderr]    Compiling arboretum-td v0.1.0
[INFO] [stderr]    Compiling bstr v0.2.17
[INFO] [stderr]    Compiling serde_cbor v0.11.2
[INFO] [stderr]    Compiling csv v1.1.6
[INFO] [stderr]    Compiling graph-algo-ptas v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/data_structure/list_graph.rs:185:25
[INFO] [stdout]     |
[INFO] [stdout] 185 |     pub fn node_indexes(&self) -> NodeIndexIter {
[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] 185 |     pub fn node_indexes(&self) -> NodeIndexIter<'_> {
[INFO] [stdout]     |                                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/data_structure/list_graph.rs:194:25
[INFO] [stdout]     |
[INFO] [stdout] 194 |     pub fn edge_indexes(&self) -> EdgeIndexIter {
[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] 194 |     pub fn edge_indexes(&self) -> EdgeIndexIter<'_> {
[INFO] [stdout]     |                                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/embedding/maximal_planar/phase2.rs:11:22
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub fn new(dcel: &mut LinkGraph) -> Phase2 {
[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] 11 |     pub fn new(dcel: &mut LinkGraph) -> Phase2<'_> {
[INFO] [stdout]    |                                               ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling criterion v0.3.6
[INFO] [stdout] warning: unused return value of `must_use` that must be used
[INFO] [stdout]    --> src/data_structure/link_graph.rs:800:9
[INFO] [stdout]     |
[INFO] [stdout] 800 |         format!("{:?}", vertex);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 800 |         let _ = format!("{:?}", vertex);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `must_use` that must be used
[INFO] [stdout]    --> src/data_structure/link_graph.rs:801:9
[INFO] [stdout]     |
[INFO] [stdout] 801 |         format!("{:?}", dart);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 801 |         let _ = format!("{:?}", dart);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `must_use` that must be used
[INFO] [stdout]    --> src/data_structure/link_graph.rs:802:9
[INFO] [stdout]     |
[INFO] [stdout] 802 |         format!("{:?}", face);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 802 |         let _ = format!("{:?}", face);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/data_structure/list_graph.rs:185:25
[INFO] [stdout]     |
[INFO] [stdout] 185 |     pub fn node_indexes(&self) -> NodeIndexIter {
[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] 185 |     pub fn node_indexes(&self) -> NodeIndexIter<'_> {
[INFO] [stdout]     |                                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/data_structure/list_graph.rs:194:25
[INFO] [stdout]     |
[INFO] [stdout] 194 |     pub fn edge_indexes(&self) -> EdgeIndexIter {
[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] 194 |     pub fn edge_indexes(&self) -> EdgeIndexIter<'_> {
[INFO] [stdout]     |                                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/embedding/maximal_planar/phase2.rs:11:22
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub fn new(dcel: &mut LinkGraph) -> Phase2 {
[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] 11 |     pub fn new(dcel: &mut LinkGraph) -> Phase2<'_> {
[INFO] [stdout]    |                                               ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 30.12s
[INFO] running `Command { std: "docker" "inspect" "7009b848f71abdb202762e6a8e835cc3ffb08be099325218704717c66be4afdb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7009b848f71abdb202762e6a8e835cc3ffb08be099325218704717c66be4afdb", kill_on_drop: false }`
[INFO] [stdout] 7009b848f71abdb202762e6a8e835cc3ffb08be099325218704717c66be4afdb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8f00a68170234d9840ea709a6eab0c5f295e8acaba012e4c215e10e05e402c25
[INFO] running `Command { std: "docker" "start" "-a" "8f00a68170234d9840ea709a6eab0c5f295e8acaba012e4c215e10e05e402c25", kill_on_drop: false }`
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/data_structure/list_graph.rs:185:25
[INFO] [stderr]     |
[INFO] [stderr] 185 |     pub fn node_indexes(&self) -> NodeIndexIter {
[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] 185 |     pub fn node_indexes(&self) -> NodeIndexIter<'_> {
[INFO] [stderr]     |                                                ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/data_structure/list_graph.rs:194:25
[INFO] [stderr]     |
[INFO] [stderr] 194 |     pub fn edge_indexes(&self) -> EdgeIndexIter {
[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] 194 |     pub fn edge_indexes(&self) -> EdgeIndexIter<'_> {
[INFO] [stderr]     |                                                ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/embedding/maximal_planar/phase2.rs:11:22
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn new(dcel: &mut LinkGraph) -> Phase2 {
[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] 11 |     pub fn new(dcel: &mut LinkGraph) -> Phase2<'_> {
[INFO] [stderr]    |                                               ++++
[INFO] [stderr] 
[INFO] [stderr] warning: `graph-algo-ptas` (lib) generated 3 warnings
[INFO] [stderr] warning: unused return value of `must_use` that must be used
[INFO] [stderr]    --> src/data_structure/link_graph.rs:800:9
[INFO] [stderr]     |
[INFO] [stderr] 800 |         format!("{:?}", vertex);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 800 |         let _ = format!("{:?}", vertex);
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `must_use` that must be used
[INFO] [stderr]    --> src/data_structure/link_graph.rs:801:9
[INFO] [stderr]     |
[INFO] [stderr] 801 |         format!("{:?}", dart);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 801 |         let _ = format!("{:?}", dart);
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `must_use` that must be used
[INFO] [stderr]    --> src/data_structure/link_graph.rs:802:9
[INFO] [stderr]     |
[INFO] [stderr] 802 |         format!("{:?}", face);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 802 |         let _ = format!("{:?}", face);
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `graph-algo-ptas` (lib test) generated 6 warnings (3 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.20s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/graph_algo_ptas-ef13fbf0fb51d177)
[INFO] [stdout] 
[INFO] [stdout] running 113 tests
[INFO] [stdout] test algorithm::dualgraph::tests::triangle ... ok
[INFO] [stdout] test algorithm::leveling::tests::test ... ok
[INFO] [stdout] test algorithm::leveling::tests::rings ... ok
[INFO] [stdout] test algorithm::leveling::tests::three_triangle ... ok
[INFO] [stdout] test algorithm::dynamic_programming::solve::tests::remapping ... ok
[INFO] [stdout] test algorithm::nice_tree_decomposition::tests::single_bag_with_1_vertex ... ok
[INFO] [stdout] test algorithm::nice_tree_decomposition::tests::two_bags_with_multiple_vertices ... ok
[INFO] [stdout] test algorithm::leveling::tests::triangle ... ok
[INFO] [stdout] test algorithm::dynamic_programming::solve::tests::large_bit_vec ... ok
[INFO] [stdout] test algorithm::nice_tree_decomposition::tests::single_bag_with_multiple_vertices ... ok
[INFO] [stdout] test algorithm::ptas::tests::max_independent_set_single_edge ... ok
[INFO] [stdout] test algorithm::leveling::tests::two_triangle ... ok
[INFO] [stdout] test algorithm::spantree::tests::quad ... ok
[INFO] [stdout] test algorithm::ptas::tests::max_independent_set_single_vertex ... ok
[INFO] [stdout] test algorithm::ptas::tests::min_vertex_cover_single_edge ... ok
[INFO] [stdout] test algorithm::ptas::tests::min_vertex_cover_single_vertex ... ok
[INFO] [stdout] test algorithm::spantree::tests::single_edge ... ok
[INFO] [stdout] test algorithm::tree_decomposition::tests::single_edge ... ok
[INFO] [stdout] test algorithm::triangulation::tests::single_edge ... ok
[INFO] [stdout] test algorithm::tree_decomposition::tests::triangle ... ok
[INFO] [stdout] test algorithm::triangulation::tests::three_edges ... ok
[INFO] [stdout] test algorithm::spantree::tests::triangle ... ok
[INFO] [stdout] test algorithm::dynamic_programming::solve::tests::max_independent_set_isolated ... ok
[INFO] [stdout] test algorithm::triangulation::tests::outgoing_edge ... ok
[INFO] [stdout] test data_structure::link_graph::tests::cmp_test ... ok
[INFO] [stdout] test data_structure::link_graph::tests::dart_count ... ok
[INFO] [stdout] test data_structure::link_graph::tests::edge_count ... ok
[INFO] [stdout] test data_structure::link_graph::tests::eq_test ... ok
[INFO] [stdout] test data_structure::link_graph::tests::face_count ... ok
[INFO] [stdout] test data_structure::link_graph::tests::face_vertex_count ... ok
[INFO] [stdout] test data_structure::link_graph::tests::hash_test ... ok
[INFO] [stdout] test data_structure::link_graph::tests::iter_test ... ok
[INFO] [stdout] test data_structure::link_graph::tests::neighbors_count ... ok
[INFO] [stdout] test data_structure::link_graph::tests::neighbors_single_edge ... ok
[INFO] [stdout] test data_structure::link_graph::tests::neighbors_triangle ... ok
[INFO] [stdout] test data_structure::link_graph::tests::test ... ok
[INFO] [stdout] test data_structure::link_graph::tests::test_add_edge ... ok
[INFO] [stdout] test data_structure::link_graph::tests::test_remove_edge ... ok
[INFO] [stdout] test data_structure::link_graph::tests::test_remove_edge_from_complex_graph ... ok
[INFO] [stdout] test data_structure::list_graph::tests::from_edge_node_list_test ... ok
[INFO] [stdout] test data_structure::link_graph::example::test::validate_three_ring_graph ... ok
[INFO] [stdout] test data_structure::list_graph::tests::test_list_graph_add_ordered_edge_end ... ok
[INFO] [stdout] test data_structure::list_graph::tests::test_list_graph_add_connected_node ... ok
[INFO] [stdout] test data_structure::list_graph::tests::test_list_graph_add_ordered_edge_middle ... ok
[INFO] [stdout] test data_structure::list_graph::tests::test_list_graph_add_ordered_edge_middle_reverse ... ok
[INFO] [stdout] test data_structure::list_graph::tests::test_list_graph_add_ordered_edge_end_reverse ... ok
[INFO] [stdout] test data_structure::list_graph::tests::test_list_graph_add_ordered_edge_none ... ok
[INFO] [stdout] test data_structure::list_graph::tests::test_list_graph_add_ordered_edge_start ... ok
[INFO] [stdout] test data_structure::list_graph::tests::test_list_graph_add_ordered_edge_start_reverse ... ok
[INFO] [stdout] test data_structure::list_graph::tests::test_list_graph_all_edges ... ok
[INFO] [stdout] test algorithm::dynamic_programming::solve::tests::min_vertex_cover_isolated ... ok
[INFO] [stdout] test data_structure::list_graph::tests::test_list_graph_counts ... ok
[INFO] [stdout] test algorithm::spantree::tests::single_vertex - should panic ... ok
[INFO] [stdout] test data_structure::list_graph::tests::test_list_graph_multi_connected_node ... ok
[INFO] [stdout] test data_structure::dot_renderer::tests::circle ... FAILED
[INFO] [stdout] test data_structure::dot_renderer::tests::test_two_vertices ... FAILED
[INFO] [stdout] test data_structure::list_graph::tests::test_list_graph_new_vertex ... ok
[INFO] [stdout] test data_structure::list_graph::tests::test_list_graph_ordered_double_add_wit_after ... ok
[INFO] [stdout] test data_structure::list_graph::tests::test_list_graph_ordered_re_add ... ok
[INFO] [stdout] test data_structure::list_graph::tests::test_list_graph_opposite ... ok
[INFO] [stdout] test data_structure::list_graph::tests::test_list_graph_ordered_re_add_different_position ... ok
[INFO] [stdout] test data_structure::list_graph::tests::test_list_graph_remove_connected_node ... ok
[INFO] [stdout] test data_structure::list_graph::tests::test_to_pet_graph ... ok
[INFO] [stdout] test data_structure::ring_segment::test::test_ring_four ... ok
[INFO] [stdout] test data_structure::ring_segment::test::test_ring_one ... ok
[INFO] [stdout] test data_structure::ring_segment::test::test_ring_three_inner_darts ... ok
[INFO] [stdout] test data_structure::ring_segment::test::test_ring_three ... ok
[INFO] [stdout] test data_structure::ring_segment::test::test_ring_two ... ok
[INFO] [stdout] test data_structure::ring_segment::test::test_ring_three_outer_darts ... ok
[INFO] [stdout] test data_structure::list_graph::tests::test_list_graph_ordered_re_add_cyclic ... ok
[INFO] [stdout] test embedding::maximal_planar::index::tests::embed_k4_graph ... ok
[INFO] [stdout] test data_structure::ring_segment::test::test_ring_two_outer_darts ... ok
[INFO] [stdout] test data_structure::ring_segment::test::test_ring_two_inner_darts ... ok
[INFO] [stdout] test algorithm::dualgraph::tests::single_edge ... ok
[INFO] [stdout] test data_structure::list_graph::tests::test_list_graph_cyclic_incident_prev ... ok
[INFO] [stdout] test data_structure::list_graph::tests::test_list_graph_cyclic_incident_succ ... ok
[INFO] [stdout] test data_structure::list_graph::tests::test_list_graph_edges ... ok
[INFO] [stdout] test embedding::maximal_planar::phase1::tests::phase_1 ... ok
[INFO] [stdout] test embedding::maximal_planar::phase2::tests::phase_2 ... ok
[INFO] [stdout] test embedding::maximal_planar::phase2::tests::triangle_embedding ... ok
[INFO] [stdout] test generation::planar::tests::test_graph_generation_base ... ok
[INFO] [stdout] test embedding::maximal_planar::index::tests::embed_min_graph ... ok
[INFO] [stdout] test embedding::maximal_planar::index::tests::embedd_triangle_graph ... ok
[INFO] [stdout] test embedding::maximal_planar::index::tests::embedd_to_small - should panic ... ok
[INFO] [stdout] test generation::planar::tests::test_graph_generation_large ... ok
[INFO] [stdout] test generation::planar::tests::test_graph_generation_small ... ok
[INFO] [stdout] test embedding::maximal_planar::index::tests::embed_small_graph ... ok
[INFO] [stdout] test utils::convert::tests::single_edge ... ok
[INFO] [stdout] test utils::convert::tests::square ... ok
[INFO] [stdout] test utils::convert::tests::triangle ... ok
[INFO] [stdout] test utils::convert::tests::isolated ... ok
[INFO] [stdout] test generation::planar::tests::test_graph_generation_min ... ok
[INFO] [stdout] test utils::max_independent_set::tests::single_edge ... ok
[INFO] [stdout] test generation::planar::tests::test_graph_generation_medium ... ok
[INFO] [stdout] test utils::max_independent_set::tests::isolated ... ok
[INFO] [stdout] test utils::min_vertex_cover::tests::single_edge ... ok
[INFO] [stdout] test utils::max_independent_set::tests::empty_set ... ok
[INFO] [stdout] test utils::single_face::tests::test ... ok
[INFO] [stdout] test utils::min_vertex_cover::tests::isolated ... ok
[INFO] [stdout] test utils::single_face::tests::darts ... ok
[INFO] [stdout] test algorithm::triangulation::tests::single_face ... ok
[INFO] [stdout] test embedding::maximal_planar::index::tests::embed_medium_graph ... ok
[INFO] [stdout] test algorithm::dynamic_programming::solve::tests::min_vertex_cover_clique ... ok
[INFO] [stdout] test algorithm::dynamic_programming::solve::tests::max_independent_set_clique ... ok
[INFO] [stdout] test algorithm::nice_tree_decomposition::tests::random ... ok
[INFO] [stdout] test embedding::maximal_planar::index::tests::embed_large_graph ... ok
[INFO] [stdout] test algorithm::dynamic_programming::solve::tests::max_independent_set_random ... ok
[INFO] [stdout] test utils::max_independent_set::tests::clique ... ok
[INFO] [stdout] test utils::min_vertex_cover::tests::clique ... ok
[INFO] [stdout] test algorithm::ptas::tests::approximation_ratio ... ok
[INFO] [stdout] test algorithm::ptas::tests::max_independent_set_random ... ok
[INFO] [stdout] test algorithm::dynamic_programming::solve::tests::min_vertex_cover_random ... ok
[INFO] [stdout] test algorithm::ptas::tests::min_vertex_cover_random ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- data_structure::dot_renderer::tests::circle stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'data_structure::dot_renderer::tests::circle' panicked at src/data_structure/dot_renderer.rs:66:48:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5e04327bd9a2 - std::backtrace_rs::backtrace::libunwind::trace::h2d45396358f41939
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5e04327bd9a2 - std::backtrace_rs::backtrace::trace_unsynchronized::hffcefc0b67f1d6e2
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5e04327bd9a2 - std::sys::backtrace::_print_fmt::hd72f71d23b436b92
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x5e04327bd9a2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hdcfcb6d4c8489523
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x5e04327e3993 - core::fmt::rt::Argument::fmt::h2c56b3114963061a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x5e04327e3993 - core::fmt::write::h8a494366950f23bb
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/mod.rs:1468:25
[INFO] [stdout]    6:     0x5e04327ba923 - std::io::default_write_fmt::h7b8824096454f323
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5e04327ba923 - std::io::Write::write_fmt::h4e71294925c334d0
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x5e04327bd7f2 - std::sys::backtrace::BacktraceLock::print::hb2a626a81e06b2dc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x5e04327bef29 - std::panicking::default_hook::{{closure}}::h4f78485264f12d10
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:300:27
[INFO] [stdout]   10:     0x5e04327bed5e - std::panicking::default_hook::h2c66fc99e962531d
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:324:9
[INFO] [stdout]   11:     0x5e04326aef14 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb6bd65493727d71a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   12:     0x5e04326aef14 - test::test_main_with_exit_callback::{{closure}}::h60217ec76a0ece4a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5e04327bf9fe - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h318e4efb8c1a5689
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   14:     0x5e04327bf9fe - std::panicking::rust_panic_with_hook::h33ac55f64bbd807d
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:841:13
[INFO] [stdout]   15:     0x5e04327bf6ca - std::panicking::begin_panic_handler::{{closure}}::h30e7cb89678a57fe
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:706:13
[INFO] [stdout]   16:     0x5e04327bdea9 - std::sys::backtrace::__rust_end_short_backtrace::hed60f27456c16ced
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x5e04327bf35d - __rustc[de2ca18b4c54d5b8]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:697:5
[INFO] [stdout]   18:     0x5e04327e2040 - core::panicking::panic_fmt::h62f63d096dd276af
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:75:14
[INFO] [stdout]   19:     0x5e04327e2506 - core::result::unwrap_failed::h95bc3f5a607b2c95
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/result.rs:1765:5
[INFO] [stdout]   20:     0x5e0432644981 - core::result::Result<T,E>::unwrap::h0d98673a0e41b952
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/result.rs:1167:23
[INFO] [stdout]   21:     0x5e0432644981 - graph_algo_ptas::data_structure::dot_renderer::tests::circle::h9e4efb30ed225fe2
[INFO] [stdout]                                at /opt/rustwide/workdir/src/data_structure/dot_renderer.rs:66:48
[INFO] [stdout]   22:     0x5e0432644907 - graph_algo_ptas::data_structure::dot_renderer::tests::circle::{{closure}}::h2d6e7b74abaca4ec
[INFO] [stdout]                                at /opt/rustwide/workdir/src/data_structure/dot_renderer.rs:65:16
[INFO] [stdout]   23:     0x5e04326378a6 - core::ops::function::FnOnce::call_once::h6264f22bd66b36d6
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   24:     0x5e04326b477b - core::ops::function::FnOnce::call_once::h1f9474f1347fff52
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   25:     0x5e04326b477b - test::__rust_begin_short_backtrace::ha52ab26e77157f03
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:648:18
[INFO] [stdout]   26:     0x5e04326b38b5 - test::run_test_in_process::{{closure}}::h229c1a11a50b261f
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:671:74
[INFO] [stdout]   27:     0x5e04326b38b5 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h78821afbf97b39a9
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   28:     0x5e04326b38b5 - std::panicking::catch_unwind::do_call::h53abf3ed5bd32ba3
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40
[INFO] [stdout]   29:     0x5e04326b38b5 - std::panicking::catch_unwind::h6deb5fe1e91873c9
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19
[INFO] [stdout]   30:     0x5e04326b38b5 - std::panic::catch_unwind::hea0829b6b565654b
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x5e04326b38b5 - test::run_test_in_process::hdc44dfecea3db21b
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:671:27
[INFO] [stdout]   32:     0x5e04326b38b5 - test::run_test::{{closure}}::h0364ba59bf23f652
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:592:43
[INFO] [stdout]   33:     0x5e04326774b4 - test::run_test::{{closure}}::h32730b304eec05da
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:622:41
[INFO] [stdout]   34:     0x5e04326774b4 - std::sys::backtrace::__rust_begin_short_backtrace::h177cb952fc54ad2c
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   35:     0x5e043267ae8a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h119d903520007597
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/thread/mod.rs:559:17
[INFO] [stdout]   36:     0x5e043267ae8a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hab88401d606702a6
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   37:     0x5e043267ae8a - std::panicking::catch_unwind::do_call::h163fe12cca9901c2
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40
[INFO] [stdout]   38:     0x5e043267ae8a - std::panicking::catch_unwind::he81557d0e17cc1bc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19
[INFO] [stdout]   39:     0x5e043267ae8a - std::panic::catch_unwind::hc2b8e79c20593955
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x5e043267ae8a - std::thread::Builder::spawn_unchecked_::{{closure}}::hfa6b4978e07815cc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/thread/mod.rs:557:30
[INFO] [stdout]   41:     0x5e043267ae8a - core::ops::function::FnOnce::call_once{{vtable.shim}}::hddcd7484a13fd793
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   42:     0x5e04327c297f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h5924238c754de3b8
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1971:9
[INFO] [stdout]   43:     0x5e04327c297f - std::sys::pal::unix::thread::Thread::new::thread_start::hb6e99e73da4d28f8
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/pal/unix/thread.rs:107:17
[INFO] [stdout]   44:     0x7b895dbdaaa4 - <unknown>
[INFO] [stdout]   45:     0x7b895dc67a34 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- data_structure::dot_renderer::tests::test_two_vertices stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'data_structure::dot_renderer::tests::test_two_vertices' panicked at src/data_structure/dot_renderer.rs:55:54:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5e04327bd9a2 - std::backtrace_rs::backtrace::libunwind::trace::h2d45396358f41939
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5e04327bd9a2 - std::backtrace_rs::backtrace::trace_unsynchronized::hffcefc0b67f1d6e2
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5e04327bd9a2 - std::sys::backtrace::_print_fmt::hd72f71d23b436b92
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x5e04327bd9a2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hdcfcb6d4c8489523
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x5e04327e3993 - core::fmt::rt::Argument::fmt::h2c56b3114963061a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x5e04327e3993 - core::fmt::write::h8a494366950f23bb
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/mod.rs:1468:25
[INFO] [stdout]    6:     0x5e04327ba923 - std::io::default_write_fmt::h7b8824096454f323
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5e04327ba923 - std::io::Write::write_fmt::h4e71294925c334d0
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x5e04327bd7f2 - std::sys::backtrace::BacktraceLock::print::hb2a626a81e06b2dc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x5e04327bef29 - std::panicking::default_hook::{{closure}}::h4f78485264f12d10
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:300:27
[INFO] [stdout]   10:     0x5e04327bed5e - std::panicking::default_hook::h2c66fc99e962531d
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:324:9
[INFO] [stdout]   11:     0x5e04326aef14 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb6bd65493727d71a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   12:     0x5e04326aef14 - test::test_main_with_exit_callback::{{closure}}::h60217ec76a0ece4a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5e04327bf9fe - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h318e4efb8c1a5689
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   14:     0x5e04327bf9fe - std::panicking::rust_panic_with_hook::h33ac55f64bbd807d
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:841:13
[INFO] [stdout]   15:     0x5e04327bf6ca - std::panicking::begin_panic_handler::{{closure}}::h30e7cb89678a57fe
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:706:13
[INFO] [stdout]   16:     0x5e04327bdea9 - std::sys::backtrace::__rust_end_short_backtrace::hed60f27456c16ced
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x5e04327bf35d - __rustc[de2ca18b4c54d5b8]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:697:5
[INFO] [stdout]   18:     0x5e04327e2040 - core::panicking::panic_fmt::h62f63d096dd276af
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:75:14
[INFO] [stdout]   19:     0x5e04327e2506 - core::result::unwrap_failed::h95bc3f5a607b2c95
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/result.rs:1765:5
[INFO] [stdout]   20:     0x5e04326446b1 - core::result::Result<T,E>::unwrap::h0d98673a0e41b952
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/result.rs:1167:23
[INFO] [stdout]   21:     0x5e04326446b1 - graph_algo_ptas::data_structure::dot_renderer::tests::test_two_vertices::h7b7bb8b87499732d
[INFO] [stdout]                                at /opt/rustwide/workdir/src/data_structure/dot_renderer.rs:55:54
[INFO] [stdout]   22:     0x5e0432644637 - graph_algo_ptas::data_structure::dot_renderer::tests::test_two_vertices::{{closure}}::hdc0d061785765f20
[INFO] [stdout]                                at /opt/rustwide/workdir/src/data_structure/dot_renderer.rs:54:27
[INFO] [stdout]   23:     0x5e0432637626 - core::ops::function::FnOnce::call_once::h53dd729de835955b
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   24:     0x5e04326b477b - core::ops::function::FnOnce::call_once::h1f9474f1347fff52
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   25:     0x5e04326b477b - test::__rust_begin_short_backtrace::ha52ab26e77157f03
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:648:18
[INFO] [stdout]   26:     0x5e04326b38b5 - test::run_test_in_process::{{closure}}::h229c1a11a50b261f
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:671:74
[INFO] [stdout]   27:     0x5e04326b38b5 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h78821afbf97b39a9
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   28:     0x5e04326b38b5 - std::panicking::catch_unwind::do_call::h53abf3ed5bd32ba3
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40
[INFO] [stdout]   29:     0x5e04326b38b5 - std::panicking::catch_unwind::h6deb5fe1e91873c9
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19
[INFO] [stdout]   30:     0x5e04326b38b5 - std::panic::catch_unwind::hea0829b6b565654b
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x5e04326b38b5 - test::run_test_in_process::hdc44dfecea3db21b
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:671:27
[INFO] [stdout]   32:     0x5e04326b38b5 - test::run_test::{{closure}}::h0364ba59bf23f652
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:592:43
[INFO] [stdout]   33:     0x5e04326774b4 - test::run_test::{{closure}}::h32730b304eec05da
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:622:41
[INFO] [stdout]   34:     0x5e04326774b4 - std::sys::backtrace::__rust_begin_short_backtrace::h177cb952fc54ad2c
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   35:     0x5e043267ae8a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h119d903520007597
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/thread/mod.rs:559:17
[INFO] [stdout]   36:     0x5e043267ae8a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hab88401d606702a6
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   37:     0x5e043267ae8a - std::panicking::catch_unwind::do_call::h163fe12cca9901c2
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40
[INFO] [stdout]   38:     0x5e043267ae8a - std::panicking::catch_unwind::he81557d0e17cc1bc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19
[INFO] [stdout]   39:     0x5e043267ae8a - std::panic::catch_unwind::hc2b8e79c20593955
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x5e043267ae8a - std::thread::Builder::spawn_unchecked_::{{closure}}::hfa6b4978e07815cc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/thread/mod.rs:557:30
[INFO] [stdout]   41:     0x5e043267ae8a - core::ops::function::FnOnce::call_once{{vtable.shim}}::hddcd7484a13fd793
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   42:     0x5e04327c297f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h5924238c754de3b8
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1971:9
[INFO] [stdout]   43:     0x5e04327c297f - std::sys::pal::unix::thread::Thread::new::thread_start::hb6e99e73da4d28f8
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/pal/unix/thread.rs:107:17
[INFO] [stdout]   44:     0x7b895dbdaaa4 - <unknown>
[INFO] [stdout]   45:     0x7b895dc67a34 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     data_structure::dot_renderer::tests::circle
[INFO] [stdout]     data_structure::dot_renderer::tests::test_two_vertices
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 111 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 4.07s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] running `Command { std: "docker" "inspect" "8f00a68170234d9840ea709a6eab0c5f295e8acaba012e4c215e10e05e402c25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f00a68170234d9840ea709a6eab0c5f295e8acaba012e4c215e10e05e402c25", kill_on_drop: false }`
[INFO] [stdout] 8f00a68170234d9840ea709a6eab0c5f295e8acaba012e4c215e10e05e402c25
