[INFO] crate cpuprofiler-static 0.1.0 is already in cache
[INFO] checking cpuprofiler-static-0.1.0 against try#8a5e87609850cdd8679aada01eb0f3062f254ca8 for pr-71140
[INFO] extracting crate cpuprofiler-static 0.1.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate cpuprofiler-static 0.1.0 on toolchain 8a5e87609850cdd8679aada01eb0f3062f254ca8
[INFO] running `"/workspace/cargo-home/bin/cargo" "+8a5e87609850cdd8679aada01eb0f3062f254ca8" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate cpuprofiler-static 0.1.0
[INFO] finished tweaking crates.io crate cpuprofiler-static 0.1.0
[INFO] tweaked toml for crates.io crate cpuprofiler-static 0.1.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate cpuprofiler-static 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+8a5e87609850cdd8679aada01eb0f3062f254ca8" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "/opt/rustwide/cargo-home/bin/cargo" "+8a5e87609850cdd8679aada01eb0f3062f254ca8" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] cc9e8a46663fac6b25d87b449cd49e24bc9ff13c870b510d8c761367b0fff7a1
[INFO] running `"docker" "start" "-a" "cc9e8a46663fac6b25d87b449cd49e24bc9ff13c870b510d8c761367b0fff7a1"`
[INFO] [stderr]    Compiling libc v0.2.64
[INFO] [stderr]     Checking backtrace-sys v0.1.32
[INFO] [stderr]     Checking backtrace v0.2.3
[INFO] [stderr]     Checking error-chain v0.5.0
[INFO] [stderr]     Checking cpuprofiler v0.0.3
[INFO] [stderr]    Compiling num_cpus v1.10.1
[INFO] [stderr]    Compiling cpuprofiler-static v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `std::process::Command`
[INFO] [stderr]  --> build.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::process::Command;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_directory_empty`
[INFO] [stderr]   --> build.rs:17:4
[INFO] [stderr]    |
[INFO] [stderr] 17 | fn is_directory_empty<P: AsRef<Path>>(p: P) -> std::io::Result<bool> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `prepare_gperftool`
[INFO] [stderr]   --> build.rs:22:4
[INFO] [stderr]    |
[INFO] [stderr] 22 | fn prepare_gperftool() {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.74s
[INFO] running `"docker" "inspect" "cc9e8a46663fac6b25d87b449cd49e24bc9ff13c870b510d8c761367b0fff7a1"`
[INFO] running `"docker" "rm" "-f" "cc9e8a46663fac6b25d87b449cd49e24bc9ff13c870b510d8c761367b0fff7a1"`
[INFO] [stdout] cc9e8a46663fac6b25d87b449cd49e24bc9ff13c870b510d8c761367b0fff7a1