[INFO] fetching crate rust_combinatorics 0.1.0...
[INFO] testing rust_combinatorics-0.1.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate rust_combinatorics 0.1.0 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate rust_combinatorics 0.1.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rust_combinatorics 0.1.0
[INFO] finished tweaking crates.io crate rust_combinatorics 0.1.0
[INFO] tweaked toml for crates.io crate rust_combinatorics 0.1.0 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 84dd3b8b081882bf1666bcedb005854a009195f9ac879c4437fd7c8439365d7f
[INFO] running `Command { std: "docker" "start" "-a" "84dd3b8b081882bf1666bcedb005854a009195f9ac879c4437fd7c8439365d7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "84dd3b8b081882bf1666bcedb005854a009195f9ac879c4437fd7c8439365d7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84dd3b8b081882bf1666bcedb005854a009195f9ac879c4437fd7c8439365d7f", kill_on_drop: false }`
[INFO] [stdout] 84dd3b8b081882bf1666bcedb005854a009195f9ac879c4437fd7c8439365d7f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f36e04cbb5dba5604a866618b9b7cc9500b9cda38a743a562737c1e4019d0cf6
[INFO] running `Command { std: "docker" "start" "-a" "f36e04cbb5dba5604a866618b9b7cc9500b9cda38a743a562737c1e4019d0cf6", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rust_combinatorics v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.20s
[INFO] running `Command { std: "docker" "inspect" "f36e04cbb5dba5604a866618b9b7cc9500b9cda38a743a562737c1e4019d0cf6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f36e04cbb5dba5604a866618b9b7cc9500b9cda38a743a562737c1e4019d0cf6", kill_on_drop: false }`
[INFO] [stdout] f36e04cbb5dba5604a866618b9b7cc9500b9cda38a743a562737c1e4019d0cf6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9359a91a792c0dbd78ca573e22e0936c88e268d97c7f1abdcc9022bd2f409740
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "9359a91a792c0dbd78ca573e22e0936c88e268d97c7f1abdcc9022bd2f409740", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_combinatorics v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.83s
[INFO] running `Command { std: "docker" "inspect" "9359a91a792c0dbd78ca573e22e0936c88e268d97c7f1abdcc9022bd2f409740", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9359a91a792c0dbd78ca573e22e0936c88e268d97c7f1abdcc9022bd2f409740", kill_on_drop: false }`
[INFO] [stdout] 9359a91a792c0dbd78ca573e22e0936c88e268d97c7f1abdcc9022bd2f409740
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e41edc2463939e1691256c339bbc51228c22ab59c5b3cbd1a45c29f6d69a5b42
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e41edc2463939e1691256c339bbc51228c22ab59c5b3cbd1a45c29f6d69a5b42", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rust_combinatorics-f30a4a7da8704df0
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rust_combinatorics
[INFO] [stdout] running 6 tests
[INFO] [stdout] test combinatorics::binomial::tests::it_returns_each_item_combination_when_choosing_two_from_a_list_with_five_items ... ok
[INFO] [stdout] test combinatorics::binomial::tests::it_returns_each_item_combination_when_choosing_two_from_a_list_with_items ... ok
[INFO] [stdout] test combinatorics::binomial::tests::it_returns_the_empty_vector_when_choosing_zero_from_a_list_with_elements ... ok
[INFO] [stdout] test combinatorics::binomial::tests::it_returns_none_when_choosing_one_from_an_empty_list ... ok
[INFO] [stdout] test combinatorics::binomial::tests::it_returns_each_item_when_choosing_one_from_a_list_with_items ... ok
[INFO] [stdout] test combinatorics::binomial::tests::it_returns_the_empty_vector_when_choosing_zero_from_an_empty_list ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e41edc2463939e1691256c339bbc51228c22ab59c5b3cbd1a45c29f6d69a5b42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e41edc2463939e1691256c339bbc51228c22ab59c5b3cbd1a45c29f6d69a5b42", kill_on_drop: false }`
[INFO] [stdout] e41edc2463939e1691256c339bbc51228c22ab59c5b3cbd1a45c29f6d69a5b42