[INFO] fetching crate trees 0.4.2...
[INFO] testing trees-0.4.2 against master#99e3aef02079e9c10583638520cd0c134dc3a01d for pr-85530
[INFO] extracting crate trees 0.4.2 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate trees 0.4.2 on toolchain 99e3aef02079e9c10583638520cd0c134dc3a01d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate trees 0.4.2
[INFO] finished tweaking crates.io crate trees 0.4.2
[INFO] tweaked toml for crates.io crate trees 0.4.2 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "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] ebeb45ba4d182db28d265d0aea43b410e3e14d79afece324136f41363843863d
[INFO] running `Command { std: "docker" "start" "-a" "ebeb45ba4d182db28d265d0aea43b410e3e14d79afece324136f41363843863d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ebeb45ba4d182db28d265d0aea43b410e3e14d79afece324136f41363843863d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebeb45ba4d182db28d265d0aea43b410e3e14d79afece324136f41363843863d", kill_on_drop: false }`
[INFO] [stdout] ebeb45ba4d182db28d265d0aea43b410e3e14d79afece324136f41363843863d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 69bb3a31966084af81b8ff6f3ad3031cf0be85b7dc6380dc3546685eda8caf7b
[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" "69bb3a31966084af81b8ff6f3ad3031cf0be85b7dc6380dc3546685eda8caf7b", kill_on_drop: false }`
[INFO] [stderr]    Compiling trees v0.4.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.80s
[INFO] running `Command { std: "docker" "inspect" "69bb3a31966084af81b8ff6f3ad3031cf0be85b7dc6380dc3546685eda8caf7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69bb3a31966084af81b8ff6f3ad3031cf0be85b7dc6380dc3546685eda8caf7b", kill_on_drop: false }`
[INFO] [stdout] 69bb3a31966084af81b8ff6f3ad3031cf0be85b7dc6380dc3546685eda8caf7b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen" "--no-run" "--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] 928ebcf86c49d169281543ce61eea94b094616d82d6f0b72bb4e9b58aece286b
[INFO] running `Command { std: "docker" "start" "-a" "928ebcf86c49d169281543ce61eea94b094616d82d6f0b72bb4e9b58aece286b", kill_on_drop: false }`
[INFO] [stderr]    Compiling trees v0.4.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.48s
[INFO] running `Command { std: "docker" "inspect" "928ebcf86c49d169281543ce61eea94b094616d82d6f0b72bb4e9b58aece286b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "928ebcf86c49d169281543ce61eea94b094616d82d6f0b72bb4e9b58aece286b", kill_on_drop: false }`
[INFO] [stdout] 928ebcf86c49d169281543ce61eea94b094616d82d6f0b72bb4e9b58aece286b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e7b647f3eca065cd7734af72327eba34e632ae3a8503b9bccf28e03c8adc9175
[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" "e7b647f3eca065cd7734af72327eba34e632ae3a8503b9bccf28e03c8adc9175", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/trees-6ee3626586e81903)
[INFO] [stdout] 
[INFO] [stdout] running 12 tests
[INFO] [stdout] test bfs_impls::tests::piled_forest_from_bfs_1_1 ... ok
[INFO] [stdout] test rc::tests::rc_works ... ok
[INFO] [stdout] test tree::tests::piled_tree_from_tuple ... ok
[INFO] [stdout] test tuple::tests::tree_postorder ... ok
[INFO] [stdout] test tuple::tests::tree_preorder ... ok
[INFO] [stdout] test bfs_impls::tests::piled_tree_from_bfs_1_1 ... ok
[INFO] [stdout] test bfs_impls::tests::piled_tree_from_bfs ... ok
[INFO] [stdout] test tuple::tests::forest_postorder ... ok
[INFO] [stdout] test bfs_impls::tests::piled_forest_from_bfs ... ok
[INFO] [stdout] test forest::tests::piled_forest_from_tuple ... ok
[INFO] [stdout] test tuple::tests::forest_preorder ... ok
[INFO] [stdout] test forest::tests::empty_piled_forest_from_tuple ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 12 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests trees
[INFO] [stdout] 
[INFO] [stdout] running 88 tests
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name trees --test /opt/rustwide/workdir/src/lib.rs -L dependency=/opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern trees=/opt/rustwide/target/debug/deps/libtrees-4b15b03c8dbb1802.rlib -C embed-bitcode=no --error-format human` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "e7b647f3eca065cd7734af72327eba34e632ae3a8503b9bccf28e03c8adc9175", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7b647f3eca065cd7734af72327eba34e632ae3a8503b9bccf28e03c8adc9175", kill_on_drop: false }`
[INFO] [stdout] e7b647f3eca065cd7734af72327eba34e632ae3a8503b9bccf28e03c8adc9175