[INFO] fetching crate luka 0.4.0...
[INFO] testing luka-0.4.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate luka 0.4.0 into /workspace/builds/worker-91/source
[INFO] validating manifest of crates.io crate luka 0.4.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate luka 0.4.0
[INFO] finished tweaking crates.io crate luka 0.4.0
[INFO] tweaked toml for crates.io crate luka 0.4.0 written to /workspace/builds/worker-91/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 72012a875bd4c73f29023aa302c716490583e86a3b7d535c0204bec5fb0dc2ed
[INFO] running `Command { std: "docker" "start" "-a" "72012a875bd4c73f29023aa302c716490583e86a3b7d535c0204bec5fb0dc2ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "72012a875bd4c73f29023aa302c716490583e86a3b7d535c0204bec5fb0dc2ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72012a875bd4c73f29023aa302c716490583e86a3b7d535c0204bec5fb0dc2ed", kill_on_drop: false }`
[INFO] [stdout] 72012a875bd4c73f29023aa302c716490583e86a3b7d535c0204bec5fb0dc2ed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2b1da36beadf769f4ea78b762b83727b053bc6b005c588254e6236e9a3fd3532
[INFO] running `Command { std: "docker" "start" "-a" "2b1da36beadf769f4ea78b762b83727b053bc6b005c588254e6236e9a3fd3532", kill_on_drop: false }`
[INFO] [stderr]    Compiling luka v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.54s
[INFO] running `Command { std: "docker" "inspect" "2b1da36beadf769f4ea78b762b83727b053bc6b005c588254e6236e9a3fd3532", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b1da36beadf769f4ea78b762b83727b053bc6b005c588254e6236e9a3fd3532", kill_on_drop: false }`
[INFO] [stdout] 2b1da36beadf769f4ea78b762b83727b053bc6b005c588254e6236e9a3fd3532
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e5586932a8d8c061db9431fd757def0673b53d5180a0f3d350f171c699e8159d
[INFO] running `Command { std: "docker" "start" "-a" "e5586932a8d8c061db9431fd757def0673b53d5180a0f3d350f171c699e8159d", kill_on_drop: false }`
[INFO] [stderr]    Compiling luka v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.36s
[INFO] running `Command { std: "docker" "inspect" "e5586932a8d8c061db9431fd757def0673b53d5180a0f3d350f171c699e8159d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5586932a8d8c061db9431fd757def0673b53d5180a0f3d350f171c699e8159d", kill_on_drop: false }`
[INFO] [stdout] e5586932a8d8c061db9431fd757def0673b53d5180a0f3d350f171c699e8159d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f1bd0bd85b7f8cae4e74eea1d76a4125b26ff733d1cfb80d7bd1dc81d8bcf1b5
[INFO] running `Command { std: "docker" "start" "-a" "f1bd0bd85b7f8cae4e74eea1d76a4125b26ff733d1cfb80d7bd1dc81d8bcf1b5", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/luka-494dd0ba30f740a3)
[INFO] [stdout] 
[INFO] [stdout] running 26 tests
[INFO] [stdout] test algorithms::bellman_ford::tests::test_bellman_ford ... ok
[INFO] [stdout] test algorithms::bfs::tests::test_bfs_algorithm ... ok
[INFO] [stdout] test algorithms::bfs::tests::test_bfs_with_visitor_algorithm ... ok
[INFO] [stdout] test algorithms::connected_components::tests::test_find_connected_components ... ok
[INFO] [stdout] test algorithms::connected_components::tests::test_find_strongly_connected_components ... ok
[INFO] [stdout] test algorithms::dfs::tests::test_dfs_algorithm ... ok
[INFO] [stdout] test algorithms::dfs::tests::test_dfs_with_visitor_algorithm ... ok
[INFO] [stdout] test algorithms::dijkstra::tests::test_dijkstra ... ok
[INFO] [stdout] test algorithms::find_bridges::tests::test_find_bridges ... ok
[INFO] [stdout] test algorithms::find_cycle::tests::test_find_oriented_cycle ... ok
[INFO] [stdout] test algorithms::find_cycle::tests::test_find_cycle ... ok
[INFO] [stdout] test algorithms::find_vertices_depths::tests::test_find_vertices_depths ... ok
[INFO] [stdout] test algorithms::find_subtrees_size::tests::test_find_subtrees_size ... ok
[INFO] [stdout] test algorithms::floid::tests::test_floid ... ok
[INFO] [stdout] test algorithms::kruskal::tests::test_kruskal ... ok
[INFO] [stdout] test algorithms::lca::tests::test_lca ... ok
[INFO] [stdout] test algorithms::topological_sort::tests::test_topology_sort ... ok
[INFO] [stdout] test dsu::tests::test_dsu ... ok
[INFO] [stdout] test stack::test_stack ... ok
[INFO] [stdout] test algorithms::bellman_ford::tests::test_bellman_ford_exists_cycle - should panic ... ok
[INFO] [stdout] test algorithms::bfs::tests::test_bfs_algorithm_panic - should panic ... ok
[INFO] [stdout] test algorithms::dfs::tests::test_dfs_algorithm_panic - should panic ... ok
[INFO] [stdout] test algorithms::floid::tests::test_floid_exists_cycle_negative_weight - should panic ... ok
[INFO] [stdout] test algorithms::lca::tests::test_lca_not_connected_graph - should panic ... ok
[INFO] [stdout] test algorithms::topological_sort::tests::test_exists_cycle_topology_sort - should panic ... ok
[INFO] [stdout] test dsu::tests::test_dsu_panic - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 26 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/bellman_ford.rs (/opt/rustwide/target/debug/deps/bellman_ford-58bbe3d376654171)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test_bellman_ford ... ok
[INFO] [stdout] test test_bellman_ford_exists_cycle - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/bfs.rs (/opt/rustwide/target/debug/deps/bfs-7eab1fc8cf70077d)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test integration_test_bfs_algorithm ... ok
[INFO] [stdout] test integration_test_bfs_with_visitor_algorithm ... ok
[INFO] [stderr]      Running tests/connected_components.rs (/opt/rustwide/target/debug/deps/connected_components-40a2f23c01467ade)
[INFO] [stdout] test integration_test_bfs_algorithm_panic - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test integration_test_find_strongly_connected_components ... ok
[INFO] [stdout] test integration_test_find_connected_components ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/cycle.rs (/opt/rustwide/target/debug/deps/cycle-41c9bdb42b323dee)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test integration_test_find_cycle ... ok
[INFO] [stdout] test test_find_oriented_cycle ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/dfs.rs (/opt/rustwide/target/debug/deps/dfs-f739cbfcf3767fb9)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test integration_test_dfs_algorithm ... ok
[INFO] [stdout] test integration_test_dfs_with_visitor_lgorithm ... ok
[INFO] [stdout] test integration_test_dfs_algorithm_panic - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/dijkstra.rs (/opt/rustwide/target/debug/deps/dijkstra-5679b0802152ecad)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test integration_test_dijkstra ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/find_bridges.rs (/opt/rustwide/target/debug/deps/find_bridges-d8868c0a87f62c6b)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_find_bridges ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/floid.rs (/opt/rustwide/target/debug/deps/floid-411d151fbdf77057)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test_floid ... ok
[INFO] [stdout] test test_floid_exists_cycle_negative_weight - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/graph.rs (/opt/rustwide/target/debug/deps/graph-c9941cbb811b25bf)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test integraion_test_invalid_add_edge ... ok
[INFO] [stdout] test integration_test_add_edge ... ok
[INFO] [stdout] test integration_test_invalid_add_edge_with_panic - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/kruskal.rs (/opt/rustwide/target/debug/deps/kruskal-a28eb795075177d5)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_kruskal ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/lca.rs (/opt/rustwide/target/debug/deps/lca-14ed202c3bbb21cc)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_lca ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/substrees_size.rs (/opt/rustwide/target/debug/deps/substrees_size-0b2e05f55b885c9c)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_find_subtrees_size ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/topologic_sort.rs (/opt/rustwide/target/debug/deps/topologic_sort-7bda54910282c1f2)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test integration_test_topology_sort ... ok
[INFO] [stderr]      Running tests/vertices_depths.rs (/opt/rustwide/target/debug/deps/vertices_depths-86c10a06f838886c)
[INFO] [stdout] test integration_test_exists_cycle_topology_sort - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests luka
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_find_vertices_depths ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 20 tests
[INFO] [stdout] test src/lib.rs - Graph<T>::new (line 71) ... ok
[INFO] [stdout] test src/lib.rs - Graph<T>::add_edge (line 85) ... ok
[INFO] [stdout] test src/algorithms/dfs.rs - algorithms::dfs::dfs_with_visitor (line 155) ... ok
[INFO] [stdout] test src/algorithms/bfs.rs - algorithms::bfs::bfs_with_visitor (line 82) ... ok
[INFO] [stdout] test src/lib.rs - (line 3) ... ok
[INFO] [stdout] test src/algorithms/dfs.rs - algorithms::dfs::dfs (line 28) ... ok
[INFO] [stdout] test src/algorithms/lca.rs - algorithms::lca::LCA (line 23) ... ok
[INFO] [stdout] test src/algorithms/find_subtrees_size.rs - algorithms::find_subtrees_size::find_subtrees_size (line 45) ... ok
[INFO] [stdout] test src/algorithms/find_bridges.rs - algorithms::find_bridges::find_bridges (line 54) ... ok
[INFO] [stdout] test src/algorithms/bellman_ford.rs - algorithms::bellman_ford::bellman_ford (line 22) ... ok
[INFO] [stdout] test src/algorithms/bfs.rs - algorithms::bfs::bfs (line 8) ... ok
[INFO] [stdout] test src/algorithms/find_vertices_depths.rs - algorithms::find_vertices_depths::find_vertices_depths (line 45) ... ok
[INFO] [stdout] test src/algorithms/kruskal.rs - algorithms::kruskal::kruskal (line 42) ... ok
[INFO] [stdout] test src/algorithms/connected_components.rs - algorithms::connected_components::find_strongly_connected_components_search (line 99) ... ok
[INFO] [stdout] test src/algorithms/dijkstra.rs - algorithms::dijkstra::dijkstra (line 48) ... ok
[INFO] [stdout] test src/algorithms/find_cycle.rs - algorithms::find_cycle::find_oriented_cycle (line 105) ... ok
[INFO] [stdout] test src/algorithms/connected_components.rs - algorithms::connected_components::find_connected_components (line 21) ... ok
[INFO] [stdout] test src/algorithms/floid.rs - algorithms::floid::floid (line 22) ... ok
[INFO] [stdout] test src/algorithms/topological_sort.rs - algorithms::topological_sort::topoligical_sort (line 27) ... ok
[INFO] [stdout] test src/algorithms/find_cycle.rs - algorithms::find_cycle::find_cycle (line 69) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 20 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.67s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f1bd0bd85b7f8cae4e74eea1d76a4125b26ff733d1cfb80d7bd1dc81d8bcf1b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1bd0bd85b7f8cae4e74eea1d76a4125b26ff733d1cfb80d7bd1dc81d8bcf1b5", kill_on_drop: false }`
[INFO] [stdout] f1bd0bd85b7f8cae4e74eea1d76a4125b26ff733d1cfb80d7bd1dc81d8bcf1b5