[INFO] fetching crate chu-liu-edmonds 0.1.0...
[INFO] testing chu-liu-edmonds-0.1.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate chu-liu-edmonds 0.1.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate chu-liu-edmonds 0.1.0
[INFO] finished tweaking crates.io crate chu-liu-edmonds 0.1.0
[INFO] tweaked toml for crates.io crate chu-liu-edmonds 0.1.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate chu-liu-edmonds 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 25 packages to latest compatible versions
[INFO] [stderr]       Adding ndarray v0.15.6 (available: v0.16.1)
[INFO] [stderr]       Adding ndarray-rand v0.14.0 (available: v0.15.0)
[INFO] [stderr]       Adding ordered-float v4.6.0 (available: v5.1.0)
[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 }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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 }`
[INFO] [stdout] 63113bcda41e530391acd026d80447a9cdb01127e3d6e8ecb3601328a454d4ae
[INFO] running `Command { std: "docker" "start" "-a" "63113bcda41e530391acd026d80447a9cdb01127e3d6e8ecb3601328a454d4ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "63113bcda41e530391acd026d80447a9cdb01127e3d6e8ecb3601328a454d4ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63113bcda41e530391acd026d80447a9cdb01127e3d6e8ecb3601328a454d4ae", kill_on_drop: false }`
[INFO] [stdout] 63113bcda41e530391acd026d80447a9cdb01127e3d6e8ecb3601328a454d4ae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 00dba1962a7a1e95df2c8fa0192aa3486fbc83005f8766a5f947397994a15e8c
[INFO] running `Command { std: "docker" "start" "-a" "00dba1962a7a1e95df2c8fa0192aa3486fbc83005f8766a5f947397994a15e8c", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling num-complex v0.4.6
[INFO] [stderr]    Compiling ordered-float v4.6.0
[INFO] [stderr]    Compiling ndarray v0.15.6
[INFO] [stderr]    Compiling chu-liu-edmonds v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.87s
[INFO] running `Command { std: "docker" "inspect" "00dba1962a7a1e95df2c8fa0192aa3486fbc83005f8766a5f947397994a15e8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00dba1962a7a1e95df2c8fa0192aa3486fbc83005f8766a5f947397994a15e8c", kill_on_drop: false }`
[INFO] [stdout] 00dba1962a7a1e95df2c8fa0192aa3486fbc83005f8766a5f947397994a15e8c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 24b67c510ff5dbabb465f2935b2f9926bc1d2387529c47e119036c50f23e345b
[INFO] running `Command { std: "docker" "start" "-a" "24b67c510ff5dbabb465f2935b2f9926bc1d2387529c47e119036c50f23e345b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libm v0.2.15
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling libc v0.2.176
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling num-complex v0.4.6
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling ordered-float v4.6.0
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling ndarray v0.15.6
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling rand_distr v0.4.3
[INFO] [stderr]    Compiling ndarray-rand v0.14.0
[INFO] [stderr]    Compiling chu-liu-edmonds v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 8.97s
[INFO] running `Command { std: "docker" "inspect" "24b67c510ff5dbabb465f2935b2f9926bc1d2387529c47e119036c50f23e345b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24b67c510ff5dbabb465f2935b2f9926bc1d2387529c47e119036c50f23e345b", kill_on_drop: false }`
[INFO] [stdout] 24b67c510ff5dbabb465f2935b2f9926bc1d2387529c47e119036c50f23e345b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 9ea2a0a0af55c29c777e8f9b1c4cad706b7bd2b2170b85e8b457956ee9b79cf8
[INFO] running `Command { std: "docker" "start" "-a" "9ea2a0a0af55c29c777e8f9b1c4cad706b7bd2b2170b85e8b457956ee9b79cf8", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/chu_liu_edmonds-115526d52dfadcfb)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test tests::finds_cycle ... ok
[INFO] [stdout] test tests::finds_max_parents_with_inactive_vertices ... ok
[INFO] [stdout] test tests::correctly_decodes_random_large_matrices ... ok
[INFO] [stdout] test tests::correctly_decodes_toy_matrices ... ok
[INFO] [stdout] test tests::finds_max_parents ... ok
[INFO] [stdout] test tests::panics_on_incorrect_shape_score_matrix - should panic ... ok
[INFO] [stdout] test tests::finds_trees_in_random_graphs ... ok
[INFO] [stderr]    Doc-tests chu_liu_edmonds
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.14s
[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" "9ea2a0a0af55c29c777e8f9b1c4cad706b7bd2b2170b85e8b457956ee9b79cf8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ea2a0a0af55c29c777e8f9b1c4cad706b7bd2b2170b85e8b457956ee9b79cf8", kill_on_drop: false }`
[INFO] [stdout] 9ea2a0a0af55c29c777e8f9b1c4cad706b7bd2b2170b85e8b457956ee9b79cf8