[INFO] fetching crate rose_tree 0.3.0...
[INFO] checking rose_tree-0.3.0 against 1.55.0 for beta-1.56-3
[INFO] extracting crate rose_tree 0.3.0 into /workspace/builds/worker-90/source
[INFO] validating manifest of crates.io crate rose_tree 0.3.0 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 rose_tree 0.3.0
[INFO] finished tweaking crates.io crate rose_tree 0.3.0
[INFO] tweaked toml for crates.io crate rose_tree 0.3.0 written to /workspace/builds/worker-90/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/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] [stdout] 82a3579d322be47d07dedd37861d27839410e6c6239391dd136ff657b471802f
[INFO] running `Command { std: "docker" "start" "-a" "82a3579d322be47d07dedd37861d27839410e6c6239391dd136ff657b471802f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "82a3579d322be47d07dedd37861d27839410e6c6239391dd136ff657b471802f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82a3579d322be47d07dedd37861d27839410e6c6239391dd136ff657b471802f", kill_on_drop: false }`
[INFO] [stdout] 82a3579d322be47d07dedd37861d27839410e6c6239391dd136ff657b471802f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/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" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a54f90084527f565ce026a0ecbea3b509c9795623813bbf13136987739127b05
[INFO] running `Command { std: "docker" "start" "-a" "a54f90084527f565ce026a0ecbea3b509c9795623813bbf13136987739127b05", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking fixedbitset v0.4.0
[INFO] [stderr]     Checking indexmap v1.7.0
[INFO] [stderr]     Checking petgraph v0.6.0
[INFO] [stderr]     Checking rose_tree v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 39.26s
[INFO] running `Command { std: "docker" "inspect" "a54f90084527f565ce026a0ecbea3b509c9795623813bbf13136987739127b05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a54f90084527f565ce026a0ecbea3b509c9795623813bbf13136987739127b05", kill_on_drop: false }`
[INFO] [stdout] a54f90084527f565ce026a0ecbea3b509c9795623813bbf13136987739127b05