[INFO] fetching crate cluFlock 1.2.5...
[INFO] checking cluFlock-1.2.5 against try#6024cfef3a82f9a7688f07054f1650081bad3af5 for pr-74130
[INFO] extracting crate cluFlock 1.2.5 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate cluFlock 1.2.5 on toolchain 6024cfef3a82f9a7688f07054f1650081bad3af5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cluFlock 1.2.5
[INFO] finished tweaking crates.io crate cluFlock 1.2.5
[INFO] tweaked toml for crates.io crate cluFlock 1.2.5 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate cluFlock 1.2.5 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "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-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" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 950f1327019862b75887a58bb3dde41927d71eac116c9940cd86fd23592d4fef
[INFO] running `Command { std: "docker" "start" "-a" "950f1327019862b75887a58bb3dde41927d71eac116c9940cd86fd23592d4fef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "950f1327019862b75887a58bb3dde41927d71eac116c9940cd86fd23592d4fef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "950f1327019862b75887a58bb3dde41927d71eac116c9940cd86fd23592d4fef", kill_on_drop: false }`
[INFO] [stdout] 950f1327019862b75887a58bb3dde41927d71eac116c9940cd86fd23592d4fef
[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" "RUSTFLAGS=--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" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 90e7f12f7be55b4f45c7d74e851a43e9612ad93b0c22513df743ecb9e9c1ce24
[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" "90e7f12f7be55b4f45c7d74e851a43e9612ad93b0c22513df743ecb9e9c1ce24", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]     Checking cluFlock v1.2.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused label
[INFO] [stdout]   --> examples/sync_file_fn.rs:19:2
[INFO] [stdout]    |
[INFO] [stdout] 19 |     'begin: for num in 0..200 {
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_labels)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.30s
[INFO] running `Command { std: "docker" "inspect" "90e7f12f7be55b4f45c7d74e851a43e9612ad93b0c22513df743ecb9e9c1ce24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90e7f12f7be55b4f45c7d74e851a43e9612ad93b0c22513df743ecb9e9c1ce24", kill_on_drop: false }`
[INFO] [stdout] 90e7f12f7be55b4f45c7d74e851a43e9612ad93b0c22513df743ecb9e9c1ce24