[INFO] fetching crate rust_hawktracer 0.4.0...
[INFO] checking rust_hawktracer-0.4.0 against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] extracting crate rust_hawktracer 0.4.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate rust_hawktracer 0.4.0 on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate rust_hawktracer 0.4.0
[INFO] finished tweaking crates.io crate rust_hawktracer 0.4.0
[INFO] tweaked toml for crates.io crate rust_hawktracer 0.4.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "/opt/rustwide/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 67cec0b7ec43548198b1ec5bdf84ce8dedd906e010efeb7307374c6c5e70e8a2
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "67cec0b7ec43548198b1ec5bdf84ce8dedd906e010efeb7307374c6c5e70e8a2"`
[INFO] [stderr]    Compiling rust_hawktracer v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `Path`
[INFO] [stderr]  --> build.rs:6:26
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::path::{PathBuf, Path};
[INFO] [stderr]   |                          ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> tests/file_listener_tests.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     fs::remove_file(file_name);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> tests/simple_test.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     fs::remove_file(file_name);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.98s
[INFO] running `"docker" "inspect" "67cec0b7ec43548198b1ec5bdf84ce8dedd906e010efeb7307374c6c5e70e8a2"`
[INFO] running `"docker" "rm" "-f" "67cec0b7ec43548198b1ec5bdf84ce8dedd906e010efeb7307374c6c5e70e8a2"`
[INFO] [stdout] 67cec0b7ec43548198b1ec5bdf84ce8dedd906e010efeb7307374c6c5e70e8a2