[INFO] fetching crate xtree 0.1.8...
[INFO] testing xtree-0.1.8 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate xtree 0.1.8 into /workspace/builds/worker-22/source
[INFO] validating manifest of crates.io crate xtree 0.1.8 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate xtree 0.1.8
[INFO] finished tweaking crates.io crate xtree 0.1.8
[INFO] tweaked toml for crates.io crate xtree 0.1.8 written to /workspace/builds/worker-22/source/Cargo.toml
[INFO] crate crates.io crate xtree 0.1.8 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 978b9b0b61c13f1ba070236460d9d1b9a5298c0f4b543a57df1c6872f97db85c
[INFO] running `Command { std: "docker" "start" "-a" "978b9b0b61c13f1ba070236460d9d1b9a5298c0f4b543a57df1c6872f97db85c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "978b9b0b61c13f1ba070236460d9d1b9a5298c0f4b543a57df1c6872f97db85c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "978b9b0b61c13f1ba070236460d9d1b9a5298c0f4b543a57df1c6872f97db85c", kill_on_drop: false }`
[INFO] [stdout] 978b9b0b61c13f1ba070236460d9d1b9a5298c0f4b543a57df1c6872f97db85c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7b054a3399271ee4951cb2b6d725bfd16bfc70270b9dd099d9c0eb9548884601
[INFO] running `Command { std: "docker" "start" "-a" "7b054a3399271ee4951cb2b6d725bfd16bfc70270b9dd099d9c0eb9548884601", kill_on_drop: false }`
[INFO] [stderr]    Compiling xtree v0.1.8 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.61s
[INFO] running `Command { std: "docker" "inspect" "7b054a3399271ee4951cb2b6d725bfd16bfc70270b9dd099d9c0eb9548884601", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b054a3399271ee4951cb2b6d725bfd16bfc70270b9dd099d9c0eb9548884601", kill_on_drop: false }`
[INFO] [stdout] 7b054a3399271ee4951cb2b6d725bfd16bfc70270b9dd099d9c0eb9548884601
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fa54fc8f0da09b0d713447a508d5bfa6fe966b3a976fa2a9b0b53629526e9c6c
[INFO] running `Command { std: "docker" "start" "-a" "fa54fc8f0da09b0d713447a508d5bfa6fe966b3a976fa2a9b0b53629526e9c6c", kill_on_drop: false }`
[INFO] [stderr]    Compiling xtree v0.1.8 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.47s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/xtree-858bf2ab7fcb6e69)
[INFO] running `Command { std: "docker" "inspect" "fa54fc8f0da09b0d713447a508d5bfa6fe966b3a976fa2a9b0b53629526e9c6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa54fc8f0da09b0d713447a508d5bfa6fe966b3a976fa2a9b0b53629526e9c6c", kill_on_drop: false }`
[INFO] [stdout] fa54fc8f0da09b0d713447a508d5bfa6fe966b3a976fa2a9b0b53629526e9c6c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] dbe647fa2dec6d39e150ac3a1ff8edf14bdc8dad3c83b2a92d212f8483458ce3
[INFO] running `Command { std: "docker" "start" "-a" "dbe647fa2dec6d39e150ac3a1ff8edf14bdc8dad3c83b2a92d212f8483458ce3", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/xtree-858bf2ab7fcb6e69)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests xtree
[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 9 tests
[INFO] [stdout] test src/lib.rs - (line 21) ... ok
[INFO] [stdout] test src/lib.rs - (line 60) ... ok
[INFO] [stdout] test src/tree.rs - tree::Tree<T>::add_child (line 30) ... ok
[INFO] [stdout] test src/lib.rs - (line 10) ... ok
[INFO] [stdout] test src/tree.rs - tree::Tree<T>::new (line 16) ... ok
[INFO] [stdout] test src/lib.rs - (line 72) ... ok
[INFO] [stdout] test src/lib.rs - (line 85) ... ok
[INFO] [stdout] test src/lib.rs - (line 29) ... ok
[INFO] [stdout] test src/lib.rs - (line 44) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.30s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "dbe647fa2dec6d39e150ac3a1ff8edf14bdc8dad3c83b2a92d212f8483458ce3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dbe647fa2dec6d39e150ac3a1ff8edf14bdc8dad3c83b2a92d212f8483458ce3", kill_on_drop: false }`
[INFO] [stdout] dbe647fa2dec6d39e150ac3a1ff8edf14bdc8dad3c83b2a92d212f8483458ce3