[INFO] fetching crate xtree 0.1.8...
[INFO] checking xtree-0.1.8 against try#b0d0ea232bdae12fa8da8491a91ae1db029990ef for pr-84037
[INFO] extracting crate xtree 0.1.8 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate xtree 0.1.8 on toolchain b0d0ea232bdae12fa8da8491a91ae1db029990ef
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "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-3/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" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] abd0cd5bc96234360ea4253630bcf11d683bfce0e0f303792ce96a8bdaea768d
[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" "abd0cd5bc96234360ea4253630bcf11d683bfce0e0f303792ce96a8bdaea768d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "abd0cd5bc96234360ea4253630bcf11d683bfce0e0f303792ce96a8bdaea768d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "abd0cd5bc96234360ea4253630bcf11d683bfce0e0f303792ce96a8bdaea768d", kill_on_drop: false }`
[INFO] [stdout] abd0cd5bc96234360ea4253630bcf11d683bfce0e0f303792ce96a8bdaea768d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7618b85731b22e013b9e9dc6e5a280c248effa1a27c1e333bd348ee6756c00cb
[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" "7618b85731b22e013b9e9dc6e5a280c248effa1a27c1e333bd348ee6756c00cb", kill_on_drop: false }`
[INFO] [stderr]     Checking xtree v0.1.8 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `Command { std: "docker" "inspect" "7618b85731b22e013b9e9dc6e5a280c248effa1a27c1e333bd348ee6756c00cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7618b85731b22e013b9e9dc6e5a280c248effa1a27c1e333bd348ee6756c00cb", kill_on_drop: false }`
[INFO] [stdout] 7618b85731b22e013b9e9dc6e5a280c248effa1a27c1e333bd348ee6756c00cb