[INFO] fetching crate scc_tarjan 0.1.0...
[INFO] testing scc_tarjan-0.1.0 against try#b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b for pr-145330-1
[INFO] extracting crate scc_tarjan 0.1.0 into /workspace/builds/worker-4-tc2/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-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate scc_tarjan 0.1.0 on toolchain b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2ef858881e101b12c46b4b580fad1c6cdd2c454a12b221cedeab00cea87e5c67
[INFO] running `Command { std: "docker" "start" "-a" "2ef858881e101b12c46b4b580fad1c6cdd2c454a12b221cedeab00cea87e5c67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2ef858881e101b12c46b4b580fad1c6cdd2c454a12b221cedeab00cea87e5c67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ef858881e101b12c46b4b580fad1c6cdd2c454a12b221cedeab00cea87e5c67", kill_on_drop: false }`
[INFO] [stdout] 2ef858881e101b12c46b4b580fad1c6cdd2c454a12b221cedeab00cea87e5c67
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3dda6f023312ca73cf44c45d6e24247339ca2422abb6847aed20f18b50a4b4d5
[INFO] running `Command { std: "docker" "start" "-a" "3dda6f023312ca73cf44c45d6e24247339ca2422abb6847aed20f18b50a4b4d5", kill_on_drop: false }`
[INFO] [stderr]    Compiling bit-vec v0.8.0
[INFO] [stderr]    Compiling scc_tarjan v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `Command { std: "docker" "inspect" "3dda6f023312ca73cf44c45d6e24247339ca2422abb6847aed20f18b50a4b4d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3dda6f023312ca73cf44c45d6e24247339ca2422abb6847aed20f18b50a4b4d5", kill_on_drop: false }`
[INFO] [stdout] 3dda6f023312ca73cf44c45d6e24247339ca2422abb6847aed20f18b50a4b4d5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fa3c6d345aa6c0245f1063f93120e6d756f66d29e658f4ccc95a1c90068c95ad
[INFO] running `Command { std: "docker" "start" "-a" "fa3c6d345aa6c0245f1063f93120e6d756f66d29e658f4ccc95a1c90068c95ad", 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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.08s
[INFO] running `Command { std: "docker" "inspect" "fa3c6d345aa6c0245f1063f93120e6d756f66d29e658f4ccc95a1c90068c95ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa3c6d345aa6c0245f1063f93120e6d756f66d29e658f4ccc95a1c90068c95ad", kill_on_drop: false }`
[INFO] [stdout] fa3c6d345aa6c0245f1063f93120e6d756f66d29e658f4ccc95a1c90068c95ad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5e44901063267d26aa2058a6d5752710959ac89a733a9d1fb30d285659b6b138
[INFO] running `Command { std: "docker" "start" "-a" "5e44901063267d26aa2058a6d5752710959ac89a733a9d1fb30d285659b6b138", 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)]` 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 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/scc_tarjan-8c6ea706ae896e17)
[INFO] [stdout] 
[INFO] [stdout] running 14 tests
[INFO] [stdout] test tests::test_complex_nested ... ok
[INFO] [stdout] test tests::test_empty_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_simple_cycle ... ok
[INFO] [stdout] test tests::test_mixed_graph ... ok
[INFO] [stdout] test tests::test_two_disjoint_cycles ... ok
[INFO] [stdout] test tests::test_linear_chain ... ok
[INFO] [stdout] test tests::test_bidirectional_edge ... ok
[INFO] [stdout] test tests::test_single_vertex ... ok
[INFO] [stdout] test tests::test_disconnected_vertices ... ok
[INFO] [stdout] test tests::test_star_graph ... ok
[INFO] [stdout] test tests::test_parallel_edges ... ok
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/scc_tarjan-12287b1a65e4638d)
[INFO] [stdout] test tests::test_complete_graph ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 14 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests scc_tarjan
[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] [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" "5e44901063267d26aa2058a6d5752710959ac89a733a9d1fb30d285659b6b138", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e44901063267d26aa2058a6d5752710959ac89a733a9d1fb30d285659b6b138", kill_on_drop: false }`
[INFO] [stdout] 5e44901063267d26aa2058a6d5752710959ac89a733a9d1fb30d285659b6b138