Dec 04 16:01:27.041 INFO checking kbacha/string-clone-performance-rust against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 04 16:01:27.041 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-5/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 04 16:01:27.490 INFO [stdout] 48d3949751e09c9f9f5a114e8f504bfd37f56a78f8f4b1d6845642c8773e64a4
Dec 04 16:01:27.492 INFO running `"docker" "start" "-a" "48d3949751e09c9f9f5a114e8f504bfd37f56a78f8f4b1d6845642c8773e64a4"`
Dec 04 16:01:29.295 INFO [stderr] usermod: no changes
Dec 04 16:01:29.367 INFO [stderr]     Checking string-clone-performance v0.1.0 (/source)
Dec 04 16:01:29.793 INFO [stderr] warning: unused return value of `std::clone::Clone::clone` that must be used
Dec 04 16:01:29.793 INFO [stderr]   --> src/main.rs:13:38
Dec 04 16:01:29.793 INFO [stderr]    |
Dec 04 16:01:29.793 INFO [stderr] 13 |     time("100 rs", 100_000_000, || { s.clone(); });
Dec 04 16:01:29.793 INFO [stderr]    |                                      ^^^^^^^^^^
Dec 04 16:01:29.793 INFO [stderr]    |
Dec 04 16:01:29.793 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 04 16:01:29.793 INFO [stderr]    = note: cloning is often expensive and is not expected to have side effects
Dec 04 16:01:29.793 INFO [stderr] 
Dec 04 16:01:29.793 INFO [stderr] warning: unused return value of `std::clone::Clone::clone` that must be used
Dec 04 16:01:29.793 INFO [stderr]   --> src/main.rs:15:39
Dec 04 16:01:29.793 INFO [stderr]    |
Dec 04 16:01:29.793 INFO [stderr] 15 |     time("1000 rs", 100_000_000, || { s.clone(); });
Dec 04 16:01:29.793 INFO [stderr]    |                                       ^^^^^^^^^^
Dec 04 16:01:29.793 INFO [stderr]    |
Dec 04 16:01:29.793 INFO [stderr]    = note: cloning is often expensive and is not expected to have side effects
Dec 04 16:01:29.793 INFO [stderr] 
Dec 04 16:01:29.793 INFO [stderr] warning: unused return value of `std::clone::Clone::clone` that must be used
Dec 04 16:01:29.793 INFO [stderr]   --> src/main.rs:17:41
Dec 04 16:01:29.793 INFO [stderr]    |
Dec 04 16:01:29.793 INFO [stderr] 17 |     time("10,000 rs", 100_000_000, || { s.clone(); });
Dec 04 16:01:29.793 INFO [stderr]    |                                         ^^^^^^^^^^
Dec 04 16:01:29.793 INFO [stderr]    |
Dec 04 16:01:29.794 INFO [stderr]    = note: cloning is often expensive and is not expected to have side effects
Dec 04 16:01:29.794 INFO [stderr] 
Dec 04 16:01:29.794 INFO [stderr] warning: unused return value of `std::clone::Clone::clone` that must be used
Dec 04 16:01:29.794 INFO [stderr]   --> src/main.rs:19:41
Dec 04 16:01:29.794 INFO [stderr]    |
Dec 04 16:01:29.794 INFO [stderr] 19 |     time("100,000 rs", 10_000_000, || { s.clone(); });
Dec 04 16:01:29.794 INFO [stderr]    |                                         ^^^^^^^^^^
Dec 04 16:01:29.794 INFO [stderr]    |
Dec 04 16:01:29.794 INFO [stderr]    = note: cloning is often expensive and is not expected to have side effects
Dec 04 16:01:29.794 INFO [stderr] 
Dec 04 16:01:30.047 INFO [stderr] warning: unused return value of `std::clone::Clone::clone` that must be used
Dec 04 16:01:30.047 INFO [stderr]   --> src/main.rs:13:38
Dec 04 16:01:30.047 INFO [stderr]    |
Dec 04 16:01:30.047 INFO [stderr] 13 |     time("100 rs", 100_000_000, || { s.clone(); });
Dec 04 16:01:30.047 INFO [stderr]    |                                      ^^^^^^^^^^
Dec 04 16:01:30.047 INFO [stderr]    |
Dec 04 16:01:30.047 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 04 16:01:30.047 INFO [stderr]    = note: cloning is often expensive and is not expected to have side effects
Dec 04 16:01:30.047 INFO [stderr] 
Dec 04 16:01:30.047 INFO [stderr] warning: unused return value of `std::clone::Clone::clone` that must be used
Dec 04 16:01:30.047 INFO [stderr]   --> src/main.rs:15:39
Dec 04 16:01:30.047 INFO [stderr]    |
Dec 04 16:01:30.047 INFO [stderr] 15 |     time("1000 rs", 100_000_000, || { s.clone(); });
Dec 04 16:01:30.047 INFO [stderr]    |                                       ^^^^^^^^^^
Dec 04 16:01:30.047 INFO [stderr]    |
Dec 04 16:01:30.047 INFO [stderr]    = note: cloning is often expensive and is not expected to have side effects
Dec 04 16:01:30.047 INFO [stderr] 
Dec 04 16:01:30.047 INFO [stderr] warning: unused return value of `std::clone::Clone::clone` that must be used
Dec 04 16:01:30.047 INFO [stderr]   --> src/main.rs:17:41
Dec 04 16:01:30.047 INFO [stderr]    |
Dec 04 16:01:30.047 INFO [stderr] 17 |     time("10,000 rs", 100_000_000, || { s.clone(); });
Dec 04 16:01:30.047 INFO [stderr]    |                                         ^^^^^^^^^^
Dec 04 16:01:30.047 INFO [stderr]    |
Dec 04 16:01:30.047 INFO [stderr]    = note: cloning is often expensive and is not expected to have side effects
Dec 04 16:01:30.048 INFO [stderr] 
Dec 04 16:01:30.048 INFO [stderr] warning: unused return value of `std::clone::Clone::clone` that must be used
Dec 04 16:01:30.048 INFO [stderr]   --> src/main.rs:19:41
Dec 04 16:01:30.048 INFO [stderr]    |
Dec 04 16:01:30.048 INFO [stderr] 19 |     time("100,000 rs", 10_000_000, || { s.clone(); });
Dec 04 16:01:30.048 INFO [stderr]    |                                         ^^^^^^^^^^
Dec 04 16:01:30.048 INFO [stderr]    |
Dec 04 16:01:30.048 INFO [stderr]    = note: cloning is often expensive and is not expected to have side effects
Dec 04 16:01:30.048 INFO [stderr] 
Dec 04 16:01:30.069 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.75s
Dec 04 16:01:30.071 INFO [stderr] su: No module specific data is present
Dec 04 16:01:31.387 INFO running `"docker" "inspect" "48d3949751e09c9f9f5a114e8f504bfd37f56a78f8f4b1d6845642c8773e64a4"`
Dec 04 16:01:31.613 INFO running `"docker" "rm" "-f" "48d3949751e09c9f9f5a114e8f504bfd37f56a78f8f4b1d6845642c8773e64a4"`
Dec 04 16:01:31.914 INFO [stdout] 48d3949751e09c9f9f5a114e8f504bfd37f56a78f8f4b1d6845642c8773e64a4