[INFO] fetching crate scc_tarjan 0.1.0...
[INFO] testing scc_tarjan-0.1.0 against 1.91.0 for beta-1.92-2
[INFO] extracting crate scc_tarjan 0.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate scc_tarjan 0.1.0
[INFO] finished tweaking crates.io crate scc_tarjan 0.1.0
[INFO] tweaked toml for crates.io crate scc_tarjan 0.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate scc_tarjan 0.1.0 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate scc_tarjan 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" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2fab80903614f6fe73e02958e10d7a7495ad5f3b660a56a11ac537e7045df38f
[INFO] running `Command { std: "docker" "start" "-a" "2fab80903614f6fe73e02958e10d7a7495ad5f3b660a56a11ac537e7045df38f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2fab80903614f6fe73e02958e10d7a7495ad5f3b660a56a11ac537e7045df38f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2fab80903614f6fe73e02958e10d7a7495ad5f3b660a56a11ac537e7045df38f", kill_on_drop: false }`
[INFO] [stdout] 2fab80903614f6fe73e02958e10d7a7495ad5f3b660a56a11ac537e7045df38f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4cc43236db9bbd4bf8d7c795c28318a7c7ace407ba4a6185d78f3d818e447250
[INFO] running `Command { std: "docker" "start" "-a" "4cc43236db9bbd4bf8d7c795c28318a7c7ace407ba4a6185d78f3d818e447250", kill_on_drop: false }`
[INFO] [stderr]    Compiling scc_tarjan v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.37s
[INFO] running `Command { std: "docker" "inspect" "4cc43236db9bbd4bf8d7c795c28318a7c7ace407ba4a6185d78f3d818e447250", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4cc43236db9bbd4bf8d7c795c28318a7c7ace407ba4a6185d78f3d818e447250", kill_on_drop: false }`
[INFO] [stdout] 4cc43236db9bbd4bf8d7c795c28318a7c7ace407ba4a6185d78f3d818e447250
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8bf322665f82b61e46650a4adc9c54ea7ac1b76d2d9bed3a9d166616a2c08ee3
[INFO] running `Command { std: "docker" "start" "-a" "8bf322665f82b61e46650a4adc9c54ea7ac1b76d2d9bed3a9d166616a2c08ee3", kill_on_drop: false }`
[INFO] [stderr]    Compiling scc_tarjan v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:130:13
[INFO] [stdout]     |
[INFO] [stdout] 130 |         let mut comps = collect_scc(&g);
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.94s
[INFO] running `Command { std: "docker" "inspect" "8bf322665f82b61e46650a4adc9c54ea7ac1b76d2d9bed3a9d166616a2c08ee3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8bf322665f82b61e46650a4adc9c54ea7ac1b76d2d9bed3a9d166616a2c08ee3", kill_on_drop: false }`
[INFO] [stdout] 8bf322665f82b61e46650a4adc9c54ea7ac1b76d2d9bed3a9d166616a2c08ee3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] bedf2d1366413fd36bfd606ead9ce3690b9f7cd25d50a981c0d82f3910f77a69
[INFO] running `Command { std: "docker" "start" "-a" "bedf2d1366413fd36bfd606ead9ce3690b9f7cd25d50a981c0d82f3910f77a69", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:130:13
[INFO] [stderr]     |
[INFO] [stderr] 130 |         let mut comps = collect_scc(&g);
[INFO] [stderr]     |             ----^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `scc_tarjan` (lib test) generated 1 warning (run `cargo fix --lib -p scc_tarjan --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/scc_tarjan-7c78b94d114e34be)
[INFO] [stdout] 
[INFO] [stdout] running 14 tests
[INFO] [stdout] test tests::test_bidirectional_edge ... ok
[INFO] [stdout] test tests::test_complex_nested ... ok
[INFO] [stdout] test tests::test_empty_graph ... ok
[INFO] [stdout] test tests::test_mixed_graph ... ok
[INFO] [stdout] test tests::test_scc_reverse_topo_order ... ok
[INFO] [stdout] test tests::test_self_loops ... ok
[INFO] [stdout] test tests::test_single_vertex ... ok
[INFO] [stdout] test tests::test_simple_cycle ... ok
[INFO] [stdout] test tests::test_linear_chain ... ok
[INFO] [stdout] test tests::test_two_disjoint_cycles ... ok
[INFO] [stdout] test tests::test_parallel_edges ... ok
[INFO] [stdout] test tests::test_complete_graph ... ok
[INFO] [stdout] test tests::test_disconnected_vertices ... ok
[INFO] [stdout] test tests::test_star_graph ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 14 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.07s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/scc_tarjan-a50be21c5d294543)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests scc_tarjan
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "bedf2d1366413fd36bfd606ead9ce3690b9f7cd25d50a981c0d82f3910f77a69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bedf2d1366413fd36bfd606ead9ce3690b9f7cd25d50a981c0d82f3910f77a69", kill_on_drop: false }`
[INFO] [stdout] bedf2d1366413fd36bfd606ead9ce3690b9f7cd25d50a981c0d82f3910f77a69