[INFO] fetching crate gctree 0.4.0...
[INFO] testing gctree-0.4.0 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate gctree 0.4.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate gctree 0.4.0 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate gctree 0.4.0
[INFO] finished tweaking crates.io crate gctree 0.4.0
[INFO] tweaked toml for crates.io crate gctree 0.4.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded deltoid v0.11.3
[INFO] [stderr]   Downloaded deltoid-derive v0.11.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7034e6ea3da990ce3da907af4ff2b247ca219199cd7f23f8ee4fb3b33d0c90b0
[INFO] running `Command { std: "docker" "start" "-a" "7034e6ea3da990ce3da907af4ff2b247ca219199cd7f23f8ee4fb3b33d0c90b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7034e6ea3da990ce3da907af4ff2b247ca219199cd7f23f8ee4fb3b33d0c90b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7034e6ea3da990ce3da907af4ff2b247ca219199cd7f23f8ee4fb3b33d0c90b0", kill_on_drop: false }`
[INFO] [stdout] 7034e6ea3da990ce3da907af4ff2b247ca219199cd7f23f8ee4fb3b33d0c90b0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fef1820723c42538e3450a3e4db5f48e108e80f289287d9e2c20d0095d6fe415
[INFO] running `Command { std: "docker" "start" "-a" "fef1820723c42538e3450a3e4db5f48e108e80f289287d9e2c20d0095d6fe415", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling itertools v0.10.3
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling deltoid v0.11.3
[INFO] [stderr]    Compiling deltoid-derive v0.11.1
[INFO] [stderr]    Compiling gctree v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.26s
[INFO] running `Command { std: "docker" "inspect" "fef1820723c42538e3450a3e4db5f48e108e80f289287d9e2c20d0095d6fe415", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fef1820723c42538e3450a3e4db5f48e108e80f289287d9e2c20d0095d6fe415", kill_on_drop: false }`
[INFO] [stdout] fef1820723c42538e3450a3e4db5f48e108e80f289287d9e2c20d0095d6fe415
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 56b6d3ad9e6c39514c38f5e086a75a42457de58f11193419b7acc6ee3238d844
[INFO] running `Command { std: "docker" "start" "-a" "56b6d3ad9e6c39514c38f5e086a75a42457de58f11193419b7acc6ee3238d844", kill_on_drop: false }`
[INFO] [stderr]    Compiling gctree v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.26s
[INFO] running `Command { std: "docker" "inspect" "56b6d3ad9e6c39514c38f5e086a75a42457de58f11193419b7acc6ee3238d844", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56b6d3ad9e6c39514c38f5e086a75a42457de58f11193419b7acc6ee3238d844", kill_on_drop: false }`
[INFO] [stdout] 56b6d3ad9e6c39514c38f5e086a75a42457de58f11193419b7acc6ee3238d844
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0297848110f545a46631228cba081c43e455ee7c5d6c165855dc9f9aff4aeb7b
[INFO] running `Command { std: "docker" "start" "-a" "0297848110f545a46631228cba081c43e455ee7c5d6c165855dc9f9aff4aeb7b", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/gctree-b83a8d3a6861ce16)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test tests::bfs_traversal ... ok
[INFO] [stdout] test tests::dfs_traversal ... ok
[INFO] [stdout] test tests::ancestors ... ok
[INFO] [stdout] test tests::add_subtree ... ok
[INFO] [stdout] test tests::remove_subtree ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests gctree
[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" "0297848110f545a46631228cba081c43e455ee7c5d6c165855dc9f9aff4aeb7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0297848110f545a46631228cba081c43e455ee7c5d6c165855dc9f9aff4aeb7b", kill_on_drop: false }`
[INFO] [stdout] 0297848110f545a46631228cba081c43e455ee7c5d6c165855dc9f9aff4aeb7b