[INFO] fetching crate cluFlock 1.2.5...
[INFO] checking cluFlock-1.2.5 against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] extracting crate cluFlock 1.2.5 into /workspace/builds/worker-56/source
[INFO] validating manifest of crates.io crate cluFlock 1.2.5 on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-56/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" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "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-56/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 762eb9ff9ee3002aaedaa03b5a035494a84fd917df6358baabfe873821733696
[INFO] running `Command { std: "docker" "start" "-a" "762eb9ff9ee3002aaedaa03b5a035494a84fd917df6358baabfe873821733696", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "762eb9ff9ee3002aaedaa03b5a035494a84fd917df6358baabfe873821733696", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "762eb9ff9ee3002aaedaa03b5a035494a84fd917df6358baabfe873821733696", kill_on_drop: false }`
[INFO] [stdout] 762eb9ff9ee3002aaedaa03b5a035494a84fd917df6358baabfe873821733696
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6047d88ca2bfa1eab1376a60454d16b4e7f5bda3bfe5296ae3d5e862591888dd
[INFO] running `Command { std: "docker" "start" "-a" "6047d88ca2bfa1eab1376a60454d16b4e7f5bda3bfe5296ae3d5e862591888dd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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 4.87s
[INFO] running `Command { std: "docker" "inspect" "6047d88ca2bfa1eab1376a60454d16b4e7f5bda3bfe5296ae3d5e862591888dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6047d88ca2bfa1eab1376a60454d16b4e7f5bda3bfe5296ae3d5e862591888dd", kill_on_drop: false }`
[INFO] [stdout] 6047d88ca2bfa1eab1376a60454d16b4e7f5bda3bfe5296ae3d5e862591888dd