[INFO] fetching crate gperftools-static 0.1.2...
[INFO] checking gperftools-static-0.1.2 against master#74e80468347471779be6060d8d7d6d04e98e467f for pr-72788
[INFO] extracting crate gperftools-static 0.1.2 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate gperftools-static 0.1.2 on toolchain 74e80468347471779be6060d8d7d6d04e98e467f
[INFO] running `"/workspace/cargo-home/bin/cargo" "+74e80468347471779be6060d8d7d6d04e98e467f" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate gperftools-static 0.1.2
[INFO] finished tweaking crates.io crate gperftools-static 0.1.2
[INFO] tweaked toml for crates.io crate gperftools-static 0.1.2 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate gperftools-static 0.1.2 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+74e80468347471779be6060d8d7d6d04e98e467f" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+74e80468347471779be6060d8d7d6d04e98e467f" "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] 1304c19fd88e61bd10ab2aa1991cf98e4dd8a73af5ad5b9aee3dcd2f6389acf1
[INFO] running `"docker" "start" "-a" "1304c19fd88e61bd10ab2aa1991cf98e4dd8a73af5ad5b9aee3dcd2f6389acf1"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.64
[INFO] [stderr]    Compiling cc v1.0.46
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]    Compiling pkg-config v0.3.16
[INFO] [stderr]    Compiling error-chain v0.12.1
[INFO] [stderr]    Compiling gperftools v0.2.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]    Compiling num_cpus v1.10.1
[INFO] [stderr]    Compiling gperftools-static v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `Path`
[INFO] [stderr]  --> build.rs:1:17
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::path::{Path, PathBuf};
[INFO] [stderr]   |                 ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `fs`
[INFO] [stderr]  --> build.rs:2:11
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::{fs, io};
[INFO] [stderr]   |           ^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Checking backtrace v0.3.40
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.79s
[INFO] running `"docker" "inspect" "1304c19fd88e61bd10ab2aa1991cf98e4dd8a73af5ad5b9aee3dcd2f6389acf1"`
[INFO] running `"docker" "rm" "-f" "1304c19fd88e61bd10ab2aa1991cf98e4dd8a73af5ad5b9aee3dcd2f6389acf1"`
[INFO] [stdout] 1304c19fd88e61bd10ab2aa1991cf98e4dd8a73af5ad5b9aee3dcd2f6389acf1