[INFO] fetching crate treebender 0.1.0...
[INFO] testing treebender-0.1.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate treebender 0.1.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate treebender 0.1.0 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate treebender 0.1.0
[INFO] finished tweaking crates.io crate treebender 0.1.0
[INFO] tweaked toml for crates.io crate treebender 0.1.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate treebender 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b60981617174c4a70cf842eba0e513e133eff5ed3f22b2e2ee457f159a34ef1d
[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" "b60981617174c4a70cf842eba0e513e133eff5ed3f22b2e2ee457f159a34ef1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b60981617174c4a70cf842eba0e513e133eff5ed3f22b2e2ee457f159a34ef1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b60981617174c4a70cf842eba0e513e133eff5ed3f22b2e2ee457f159a34ef1d", kill_on_drop: false }`
[INFO] [stdout] b60981617174c4a70cf842eba0e513e133eff5ed3f22b2e2ee457f159a34ef1d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] af236ccabd1662d3b22dfdf140b64908705e0389eaaf4a66d0976245281eed7d
[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" "af236ccabd1662d3b22dfdf140b64908705e0389eaaf4a66d0976245281eed7d", kill_on_drop: false }`
[INFO] [stderr]    Compiling regex-syntax v0.6.17
[INFO] [stderr]    Compiling regex v1.3.7
[INFO] [stderr]    Compiling treebender v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.74s
[INFO] running `Command { std: "docker" "inspect" "af236ccabd1662d3b22dfdf140b64908705e0389eaaf4a66d0976245281eed7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af236ccabd1662d3b22dfdf140b64908705e0389eaaf4a66d0976245281eed7d", kill_on_drop: false }`
[INFO] [stdout] af236ccabd1662d3b22dfdf140b64908705e0389eaaf4a66d0976245281eed7d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cd66233c825de9da12f07887ed31bb5a5aca28917326a29838f52087465deb45
[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" "cd66233c825de9da12f07887ed31bb5a5aca28917326a29838f52087465deb45", kill_on_drop: false }`
[INFO] [stderr]    Compiling treebender v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.31s
[INFO] running `Command { std: "docker" "inspect" "cd66233c825de9da12f07887ed31bb5a5aca28917326a29838f52087465deb45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd66233c825de9da12f07887ed31bb5a5aca28917326a29838f52087465deb45", kill_on_drop: false }`
[INFO] [stdout] cd66233c825de9da12f07887ed31bb5a5aca28917326a29838f52087465deb45
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d5fe0661db273bb359e897456a2ab1f8e6ed574b1b01727b043f787cc0e5d129
[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" "d5fe0661db273bb359e897456a2ab1f8e6ed574b1b01727b043f787cc0e5d129", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/treebender-37ca1606813cc38d
[INFO] [stdout] running 7 tests
[INFO] [stdout] test featurestructure::test_construct_fs ... ok
[INFO] [stdout] test featurestructure::test_unify_tags ... ok
[INFO] [stdout] test forest::test_parse_chart ... ok
[INFO] [stdout] test forest::test_tree_generation ... ok
[INFO] [stdout] test rules::test_find_nullables ... ok
[INFO] [stdout] test test_unification_blocking ... ok
[INFO] [stdout] test rules::test_parse_grammar ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.06s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/cli-b1b331bf0861cd94
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests treebender
[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 1 test
[INFO] [stdout] test src/utils.rs - utils::combinations (line 9) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.08s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d5fe0661db273bb359e897456a2ab1f8e6ed574b1b01727b043f787cc0e5d129", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5fe0661db273bb359e897456a2ab1f8e6ed574b1b01727b043f787cc0e5d129", kill_on_drop: false }`
[INFO] [stdout] d5fe0661db273bb359e897456a2ab1f8e6ed574b1b01727b043f787cc0e5d129