[INFO] fetching crate fork-tree 2.0.0-rc4...
[INFO] testing fork-tree-2.0.0-rc4 against master#8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e for pr-74409
[INFO] extracting crate fork-tree 2.0.0-rc4 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate fork-tree 2.0.0-rc4 on toolchain 8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fork-tree 2.0.0-rc4
[INFO] finished tweaking crates.io crate fork-tree 2.0.0-rc4
[INFO] tweaked toml for crates.io crate fork-tree 2.0.0-rc4 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ea556de4e0e5b78bf93bd66f6946426ae3b775eaaae42f93b24114384b5e00be
[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" "ea556de4e0e5b78bf93bd66f6946426ae3b775eaaae42f93b24114384b5e00be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ea556de4e0e5b78bf93bd66f6946426ae3b775eaaae42f93b24114384b5e00be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea556de4e0e5b78bf93bd66f6946426ae3b775eaaae42f93b24114384b5e00be", kill_on_drop: false }`
[INFO] [stdout] ea556de4e0e5b78bf93bd66f6946426ae3b775eaaae42f93b24114384b5e00be
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "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] 908cbf4eced917bc8ab3c2fe1e22329d6d03bc9c1d37c15f57b3a9c74f03b772
[INFO] running `Command { std: "docker" "start" "-a" "908cbf4eced917bc8ab3c2fe1e22329d6d03bc9c1d37c15f57b3a9c74f03b772", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.35
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]    Compiling arrayvec v0.5.1
[INFO] [stderr]    Compiling toml v0.5.6
[INFO] [stderr]    Compiling bitvec v0.17.4
[INFO] [stderr]    Compiling proc-macro-crate v0.1.5
[INFO] [stderr]    Compiling parity-scale-codec-derive v1.2.0
[INFO] [stderr]    Compiling parity-scale-codec v1.3.1
[INFO] [stderr]    Compiling fork-tree v2.0.0-rc4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 28.17s
[INFO] running `Command { std: "docker" "inspect" "908cbf4eced917bc8ab3c2fe1e22329d6d03bc9c1d37c15f57b3a9c74f03b772", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "908cbf4eced917bc8ab3c2fe1e22329d6d03bc9c1d37c15f57b3a9c74f03b772", kill_on_drop: false }`
[INFO] [stdout] 908cbf4eced917bc8ab3c2fe1e22329d6d03bc9c1d37c15f57b3a9c74f03b772
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bf3ff9d34c3241d49f292a5f72471ac3d48af85cffe44261308b1b70c34b1489
[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" "bf3ff9d34c3241d49f292a5f72471ac3d48af85cffe44261308b1b70c34b1489", kill_on_drop: false }`
[INFO] [stderr]    Compiling fork-tree v2.0.0-rc4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.71s
[INFO] running `Command { std: "docker" "inspect" "bf3ff9d34c3241d49f292a5f72471ac3d48af85cffe44261308b1b70c34b1489", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf3ff9d34c3241d49f292a5f72471ac3d48af85cffe44261308b1b70c34b1489", kill_on_drop: false }`
[INFO] [stdout] bf3ff9d34c3241d49f292a5f72471ac3d48af85cffe44261308b1b70c34b1489
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 37b82effdc4e84f778c1141f3a58a121d19ae483a0951ef05c5ed3ca8eef1ef3
[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" "37b82effdc4e84f778c1141f3a58a121d19ae483a0951ef05c5ed3ca8eef1ef3", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stdout] running 13 tests
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/fork_tree-d407ffefaba65365
[INFO] [stdout] test test::find_node_backtracks_after_finding_highest_descending_node ... ok
[INFO] [stdout] test test::tree_rebalance ... ok
[INFO] [stdout] test test::finalize_root_works ... ok
[INFO] [stderr]    Doc-tests fork-tree
[INFO] [stdout] test test::import_doesnt_revert ... ok
[INFO] [stdout] test test::iter_iterates_in_preorder ... ok
[INFO] [stdout] test test::import_doesnt_add_duplicates ... ok
[INFO] [stdout] test test::finalize_with_ancestor_works ... ok
[INFO] [stdout] test test::finalize_with_descendent_works ... ok
[INFO] [stdout] test test::map_works ... ok
[INFO] [stdout] test test::prune_works ... ok
[INFO] [stdout] test test::finalize_works ... ok
[INFO] [stdout] test test::find_node_works ... ok
[INFO] [stdout] test test::minimizes_calls_to_is_descendent_of ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 13 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" "37b82effdc4e84f778c1141f3a58a121d19ae483a0951ef05c5ed3ca8eef1ef3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37b82effdc4e84f778c1141f3a58a121d19ae483a0951ef05c5ed3ca8eef1ef3", kill_on_drop: false }`
[INFO] [stdout] 37b82effdc4e84f778c1141f3a58a121d19ae483a0951ef05c5ed3ca8eef1ef3