[INFO] fetching crate minifier 0.0.36...
[INFO] documenting minifier-0.0.36 against try#66dfc4e010913fbed0c4ea91fc2c010004b0f441 for pr-73566
[INFO] extracting crate minifier 0.0.36 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate minifier 0.0.36 on toolchain 66dfc4e010913fbed0c4ea91fc2c010004b0f441
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate minifier 0.0.36
[INFO] finished tweaking crates.io crate minifier 0.0.36
[INFO] tweaked toml for crates.io crate minifier 0.0.36 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate minifier 0.0.36 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 46e5a8532911f27e4838f87be40b7b339527941b404a8c24c0a6301e0f362402
[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" "46e5a8532911f27e4838f87be40b7b339527941b404a8c24c0a6301e0f362402", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "46e5a8532911f27e4838f87be40b7b339527941b404a8c24c0a6301e0f362402", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46e5a8532911f27e4838f87be40b7b339527941b404a8c24c0a6301e0f362402", kill_on_drop: false }`
[INFO] [stdout] 46e5a8532911f27e4838f87be40b7b339527941b404a8c24c0a6301e0f362402
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 06b3f9df90dd67dbaf31300b7d31a1c122b59631b4da71b30bbde078c677bfee
[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" "06b3f9df90dd67dbaf31300b7d31a1c122b59631b4da71b30bbde078c677bfee", kill_on_drop: false }`
[INFO] [stderr]     Checking macro-utils v0.1.3
[INFO] [stderr]  Documenting minifier v0.0.36 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.86s
[INFO] running `Command { std: "docker" "inspect" "06b3f9df90dd67dbaf31300b7d31a1c122b59631b4da71b30bbde078c677bfee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06b3f9df90dd67dbaf31300b7d31a1c122b59631b4da71b30bbde078c677bfee", kill_on_drop: false }`
[INFO] [stdout] 06b3f9df90dd67dbaf31300b7d31a1c122b59631b4da71b30bbde078c677bfee