[INFO] fetching crate atree 0.5.2...
[INFO] testing atree-0.5.2 against 1.55.0 for beta-1.56-1
[INFO] extracting crate atree 0.5.2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate atree 0.5.2 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate atree 0.5.2
[INFO] finished tweaking crates.io crate atree 0.5.2
[INFO] tweaked toml for crates.io crate atree 0.5.2 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "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] ec52f842f3284dfd08e26bf3d3a2abada9ad9576321dda0d182399dd2ac6b890
[INFO] running `Command { std: "docker" "start" "-a" "ec52f842f3284dfd08e26bf3d3a2abada9ad9576321dda0d182399dd2ac6b890", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ec52f842f3284dfd08e26bf3d3a2abada9ad9576321dda0d182399dd2ac6b890", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec52f842f3284dfd08e26bf3d3a2abada9ad9576321dda0d182399dd2ac6b890", kill_on_drop: false }`
[INFO] [stdout] ec52f842f3284dfd08e26bf3d3a2abada9ad9576321dda0d182399dd2ac6b890
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8c2d7fcf923698f5a56267c67f27c795ec1a4fcaee46ee0858b78ed093e527fe
[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" "8c2d7fcf923698f5a56267c67f27c795ec1a4fcaee46ee0858b78ed093e527fe", kill_on_drop: false }`
[INFO] [stderr]    Compiling atree v0.5.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "8c2d7fcf923698f5a56267c67f27c795ec1a4fcaee46ee0858b78ed093e527fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c2d7fcf923698f5a56267c67f27c795ec1a4fcaee46ee0858b78ed093e527fe", kill_on_drop: false }`
[INFO] [stdout] 8c2d7fcf923698f5a56267c67f27c795ec1a4fcaee46ee0858b78ed093e527fe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "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] 22df339e7433a5ab3125985e2e4e45b0b586d34cc192a0d702b935fe1f26976f
[INFO] running `Command { std: "docker" "start" "-a" "22df339e7433a5ab3125985e2e4e45b0b586d34cc192a0d702b935fe1f26976f", kill_on_drop: false }`
[INFO] [stderr]    Compiling atree v0.5.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.72s
[INFO] running `Command { std: "docker" "inspect" "22df339e7433a5ab3125985e2e4e45b0b586d34cc192a0d702b935fe1f26976f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22df339e7433a5ab3125985e2e4e45b0b586d34cc192a0d702b935fe1f26976f", kill_on_drop: false }`
[INFO] [stdout] 22df339e7433a5ab3125985e2e4e45b0b586d34cc192a0d702b935fe1f26976f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] de94033722a12fc0edb42ac17bf643ffd62e6b97342bad7ce7b8916e1cbe560e
[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" "de94033722a12fc0edb42ac17bf643ffd62e6b97342bad7ce7b8916e1cbe560e", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/atree-8d12b0b69a37b201)
[INFO] [stdout] 
[INFO] [stdout] running 12 tests
[INFO] [stdout] test node::test::subtree_tokens_levelord ... ok
[INFO] [stdout] test token::test::replace_node ... ok
[INFO] [stdout] test token::test::subtree_levelord ... ok
[INFO] [stdout] test token::test::subtree_levelord_mut ... ok
[INFO] [stdout] test token::test::subtree_postord ... ok
[INFO] [stdout] test node::test::subtree_postord ... ok
[INFO] [stdout] test node::test::subtree_tokens_postord ... ok
[INFO] [stdout] test node::test::subtree_levelord ... ok
[INFO] [stdout] test token::test::subtree_postord_mut ... ok
[INFO] [stdout] test token::test::subtree_tokens_postord ... ok
[INFO] [stdout] test token::test::subtree_tokens_levelord ... ok
[INFO] [stdout] test token::test::remove_descendants ... 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 atree
[INFO] [stdout] 
[INFO] [stdout] running 50 tests
[INFO] [stdout] test src/arena.rs - arena::Arena<T>::with_data (line 66) ... ok
[INFO] [stdout] test src/arena.rs - arena::Arena<T>::get (line 119) ... ok
[INFO] [stdout] test src/lib.rs - (line 52) ... ok
[INFO] [stdout] test src/arena.rs - arena::Arena<T>::new_node (line 91) ... ok
[INFO] [stdout] test src/lib.rs - (line 39) ... ok
[INFO] [stdout] test src/lib.rs - (line 183) ... ok
[INFO] [stdout] test src/arena.rs - arena::Arena<T>::node_count (line 42) ... ok
[INFO] [stdout] test src/lib.rs - (line 111) ... ok
[INFO] [stdout] test src/arena.rs - arena::Arena<T>::remove (line 169) ... ok
[INFO] [stdout] test src/lib.rs - (line 149) ... ok
[INFO] [stdout] test src/arena.rs - arena::Arena<T>::is_empty (line 26) ... ok
[INFO] [stdout] test src/lib.rs - (line 63) ... ok
[INFO] [stdout] test src/node.rs - node::Node<T>::children (line 226) ... ok
[INFO] [stdout] test src/arena.rs - arena::Arena<T>::get_mut (line 138) ... ok
[INFO] [stdout] test src/arena.rs - arena::Arena<T>::uproot (line 226) ... ok
[INFO] [stdout] test src/arena.rs - arena::Arena<T>::copy_and_append_subtree (line 340) ... ok
[INFO] [stdout] test src/node.rs - node::Node<T>::children_tokens (line 119) ... ok
[INFO] [stdout] test src/node.rs - node::Node<T>::ancestors (line 147) ... ok
[INFO] [stdout] test src/lib.rs - (line 74) ... ok
[INFO] [stdout] test src/node.rs - node::Node<T>::ancestors_tokens (line 41) ... ok
[INFO] [stdout] test src/token.rs - token::Token::ancestors_mut (line 818) ... ok
[INFO] [stdout] test src/node.rs - node::Node<T>::following_siblings (line 173) ... ok
[INFO] [stdout] test src/node.rs - node::Node<T>::preceding_siblings (line 200) ... ok
[INFO] [stdout] test src/node.rs - node::Node<T>::subtree (line 294) ... ok
[INFO] [stdout] test src/node.rs - node::Node<T>::following_siblings_tokens (line 93) ... ok
[INFO] [stdout] test src/node.rs - node::Node<T>::preceding_siblings_tokens (line 67) ... ok
[INFO] [stdout] test src/token.rs - token::Token::ancestors_tokens (line 570) ... ok
[INFO] [stdout] test src/token.rs - token::Token::ancestors (line 702) ... ok
[INFO] [stdout] test src/token.rs - token::Token::append_node (line 334) ... ok
[INFO] [stdout] test src/token.rs - token::Token::append (line 54) ... ok
[INFO] [stdout] test src/arena.rs - arena::Arena<T>::split_at (line 292) ... ok
[INFO] [stdout] test src/token.rs - token::Token::following_siblings (line 759) ... ok
[INFO] [stdout] test src/token.rs - token::Token::children (line 788) ... ok
[INFO] [stdout] test src/token.rs - token::Token::insert_after (line 269) ... ok
[INFO] [stdout] test src/token.rs - token::Token::children_mut (line 946) ... ok
[INFO] [stdout] test src/token.rs - token::Token::children_tokens (line 667) ... ok
[INFO] [stdout] test src/node.rs - node::Node<T>::subtree_tokens (line 253) ... ok
[INFO] [stdout] test src/token.rs - token::Token::following_siblings_tokens (line 634) ... ok
[INFO] [stdout] test src/token.rs - token::Token::insert_before (line 105) ... ok
[INFO] [stdout] test src/token.rs - token::Token::detach (line 385) ... ok
[INFO] [stdout] test src/token.rs - token::Token::following_siblings_mut (line 858) ... ok
[INFO] [stdout] test src/token.rs - token::Token::insert_node_before (line 226) ... ok
[INFO] [stdout] test src/token.rs - token::Token::preceding_siblings_tokens (line 601) ... ok
[INFO] [stdout] test src/token.rs - token::Token::preceding_siblings_mut (line 902) ... ok
[INFO] [stdout] test src/token.rs - token::Token::subtree_mut (line 1111) ... ok
[INFO] [stdout] test src/token.rs - token::Token::insert_node_after (line 179) ... ok
[INFO] [stdout] test src/token.rs - token::Token::preceding_siblings (line 729) ... ok
[INFO] [stdout] test src/token.rs - token::Token::subtree (line 1070) ... ok
[INFO] [stdout] test src/token.rs - token::Token::replace_node (line 467) ... ok
[INFO] [stdout] test src/token.rs - token::Token::subtree_tokens (line 991) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 50 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 10.66s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "de94033722a12fc0edb42ac17bf643ffd62e6b97342bad7ce7b8916e1cbe560e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de94033722a12fc0edb42ac17bf643ffd62e6b97342bad7ce7b8916e1cbe560e", kill_on_drop: false }`
[INFO] [stdout] de94033722a12fc0edb42ac17bf643ffd62e6b97342bad7ce7b8916e1cbe560e