[INFO] fetching crate tree_arena 0.1.0...
[INFO] testing tree_arena-0.1.0 against try#2440211fe03bc45c89b6dc1a3df18382ce91e32b for pr-146098-1
[INFO] extracting crate tree_arena 0.1.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate tree_arena 0.1.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate tree_arena 0.1.0
[INFO] tweaked toml for crates.io crate tree_arena 0.1.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate tree_arena 0.1.0 on toolchain 2440211fe03bc45c89b6dc1a3df18382ce91e32b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate tree_arena 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] da279d3ec2d836812c1e5dafd8df497df99690d8303dd2627aeb896c0e2804fd
[INFO] running `Command { std: "docker" "start" "-a" "da279d3ec2d836812c1e5dafd8df497df99690d8303dd2627aeb896c0e2804fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "da279d3ec2d836812c1e5dafd8df497df99690d8303dd2627aeb896c0e2804fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da279d3ec2d836812c1e5dafd8df497df99690d8303dd2627aeb896c0e2804fd", kill_on_drop: false }`
[INFO] [stdout] da279d3ec2d836812c1e5dafd8df497df99690d8303dd2627aeb896c0e2804fd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ba62118ad2f1456cb80a496977b45005e988b19832096ff17f5f65df7259524e
[INFO] running `Command { std: "docker" "start" "-a" "ba62118ad2f1456cb80a496977b45005e988b19832096ff17f5f65df7259524e", kill_on_drop: false }`
[INFO] [stderr]    Compiling hashbrown v0.15.3
[INFO] [stderr]    Compiling tree_arena v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.78s
[INFO] running `Command { std: "docker" "inspect" "ba62118ad2f1456cb80a496977b45005e988b19832096ff17f5f65df7259524e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba62118ad2f1456cb80a496977b45005e988b19832096ff17f5f65df7259524e", kill_on_drop: false }`
[INFO] [stdout] ba62118ad2f1456cb80a496977b45005e988b19832096ff17f5f65df7259524e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7aae224cb14106a17a564cd4fcc6e09dc42e0d1481a21857f3a43d611ec46260
[INFO] running `Command { std: "docker" "start" "-a" "7aae224cb14106a17a564cd4fcc6e09dc42e0d1481a21857f3a43d611ec46260", kill_on_drop: false }`
[INFO] [stderr]    Compiling tree_arena v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.24s
[INFO] running `Command { std: "docker" "inspect" "7aae224cb14106a17a564cd4fcc6e09dc42e0d1481a21857f3a43d611ec46260", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7aae224cb14106a17a564cd4fcc6e09dc42e0d1481a21857f3a43d611ec46260", kill_on_drop: false }`
[INFO] [stdout] 7aae224cb14106a17a564cd4fcc6e09dc42e0d1481a21857f3a43d611ec46260
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 11493d855f67348d6f4579523b666fb628a97c4573ae8dea79545238c0d996a3
[INFO] running `Command { std: "docker" "start" "-a" "11493d855f67348d6f4579523b666fb628a97c4573ae8dea79545238c0d996a3", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/tree_arena-8df76135632ac05a)
[INFO] [stderr]      Running tests/basic_tests.rs (/opt/rustwide/target/debug/deps/basic_tests-0c64233219245ea7)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test arena_insertions ... ok
[INFO] [stdout] test arena_item_removal ... ok
[INFO] [stdout] test arena_mutate_parent_and_child_at_once ... ok
[INFO] [stdout] test mem_swap ... ok
[INFO] [stdout] test arena_duplicate_insertion - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests tree_arena
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "11493d855f67348d6f4579523b666fb628a97c4573ae8dea79545238c0d996a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11493d855f67348d6f4579523b666fb628a97c4573ae8dea79545238c0d996a3", kill_on_drop: false }`
[INFO] [stdout] 11493d855f67348d6f4579523b666fb628a97c4573ae8dea79545238c0d996a3