Dec 04 16:01:24.712 INFO checking kbacha/string-clone-performance-rust against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 16:01:24.712 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-2/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/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 +1df97983eb2057dc6a8f7eb364e263b51ae23230-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 16:01:25.213 INFO [stdout] 1b330c748d6fd5b66fd57212db14210fba5e9ceec84ed8be889a82d07384072f
Dec 04 16:01:25.215 INFO running `"docker" "start" "-a" "1b330c748d6fd5b66fd57212db14210fba5e9ceec84ed8be889a82d07384072f"`
Dec 04 16:01:26.983 INFO [stderr] usermod: no changes
Dec 04 16:01:27.035 INFO [stderr]     Checking string-clone-performance v0.1.0 (/source)
Dec 04 16:01:27.591 INFO [stderr] warning: unused return value of `std::clone::Clone::clone` that must be used
Dec 04 16:01:27.591 INFO [stderr]   --> src/main.rs:13:38
Dec 04 16:01:27.591 INFO [stderr]    |
Dec 04 16:01:27.591 INFO [stderr] 13 |     time("100 rs", 100_000_000, || { s.clone(); });
Dec 04 16:01:27.591 INFO [stderr]    |                                      ^^^^^^^^^^
Dec 04 16:01:27.591 INFO [stderr]    |
Dec 04 16:01:27.591 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 04 16:01:27.591 INFO [stderr]    = note: cloning is often expensive and is not expected to have side effects
Dec 04 16:01:27.591 INFO [stderr] 
Dec 04 16:01:27.591 INFO [stderr] warning: unused return value of `std::clone::Clone::clone` that must be used
Dec 04 16:01:27.591 INFO [stderr]   --> src/main.rs:15:39
Dec 04 16:01:27.591 INFO [stderr]    |
Dec 04 16:01:27.591 INFO [stderr] 15 |     time("1000 rs", 100_000_000, || { s.clone(); });
Dec 04 16:01:27.591 INFO [stderr]    |                                       ^^^^^^^^^^
Dec 04 16:01:27.603 INFO [stderr]    |
Dec 04 16:01:27.603 INFO [stderr]    = note: cloning is often expensive and is not expected to have side effects
Dec 04 16:01:27.603 INFO [stderr] 
Dec 04 16:01:27.603 INFO [stderr] warning: unused return value of `std::clone::Clone::clone` that must be used
Dec 04 16:01:27.603 INFO [stderr]   --> src/main.rs:17:41
Dec 04 16:01:27.603 INFO [stderr]    |
Dec 04 16:01:27.603 INFO [stderr] 17 |     time("10,000 rs", 100_000_000, || { s.clone(); });
Dec 04 16:01:27.603 INFO [stderr]    |                                         ^^^^^^^^^^
Dec 04 16:01:27.603 INFO [stderr]    |
Dec 04 16:01:27.603 INFO [stderr]    = note: cloning is often expensive and is not expected to have side effects
Dec 04 16:01:27.604 INFO [stderr] 
Dec 04 16:01:27.604 INFO [stderr] warning: unused return value of `std::clone::Clone::clone` that must be used
Dec 04 16:01:27.604 INFO [stderr]   --> src/main.rs:19:41
Dec 04 16:01:27.604 INFO [stderr]    |
Dec 04 16:01:27.604 INFO [stderr] 19 |     time("100,000 rs", 10_000_000, || { s.clone(); });
Dec 04 16:01:27.604 INFO [stderr]    |                                         ^^^^^^^^^^
Dec 04 16:01:27.604 INFO [stderr]    |
Dec 04 16:01:27.604 INFO [stderr]    = note: cloning is often expensive and is not expected to have side effects
Dec 04 16:01:27.604 INFO [stderr] 
Dec 04 16:01:27.744 INFO [stderr] warning: unused return value of `std::clone::Clone::clone` that must be used
Dec 04 16:01:27.744 INFO [stderr]   --> src/main.rs:13:38
Dec 04 16:01:27.745 INFO [stderr]    |
Dec 04 16:01:27.745 INFO [stderr] 13 |     time("100 rs", 100_000_000, || { s.clone(); });
Dec 04 16:01:27.745 INFO [stderr]    |                                      ^^^^^^^^^^
Dec 04 16:01:27.745 INFO [stderr]    |
Dec 04 16:01:27.745 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 04 16:01:27.745 INFO [stderr]    = note: cloning is often expensive and is not expected to have side effects
Dec 04 16:01:27.745 INFO [stderr] 
Dec 04 16:01:27.745 INFO [stderr] warning: unused return value of `std::clone::Clone::clone` that must be used
Dec 04 16:01:27.745 INFO [stderr]   --> src/main.rs:15:39
Dec 04 16:01:27.745 INFO [stderr]    |
Dec 04 16:01:27.745 INFO [stderr] 15 |     time("1000 rs", 100_000_000, || { s.clone(); });
Dec 04 16:01:27.745 INFO [stderr]    |                                       ^^^^^^^^^^
Dec 04 16:01:27.745 INFO [stderr]    |
Dec 04 16:01:27.745 INFO [stderr]    = note: cloning is often expensive and is not expected to have side effects
Dec 04 16:01:27.745 INFO [stderr] 
Dec 04 16:01:27.745 INFO [stderr] warning: unused return value of `std::clone::Clone::clone` that must be used
Dec 04 16:01:27.745 INFO [stderr]   --> src/main.rs:17:41
Dec 04 16:01:27.745 INFO [stderr]    |
Dec 04 16:01:27.745 INFO [stderr] 17 |     time("10,000 rs", 100_000_000, || { s.clone(); });
Dec 04 16:01:27.745 INFO [stderr]    |                                         ^^^^^^^^^^
Dec 04 16:01:27.745 INFO [stderr]    |
Dec 04 16:01:27.745 INFO [stderr]    = note: cloning is often expensive and is not expected to have side effects
Dec 04 16:01:27.745 INFO [stderr] 
Dec 04 16:01:27.745 INFO [stderr] warning: unused return value of `std::clone::Clone::clone` that must be used
Dec 04 16:01:27.745 INFO [stderr]   --> src/main.rs:19:41
Dec 04 16:01:27.745 INFO [stderr]    |
Dec 04 16:01:27.745 INFO [stderr] 19 |     time("100,000 rs", 10_000_000, || { s.clone(); });
Dec 04 16:01:27.745 INFO [stderr]    |                                         ^^^^^^^^^^
Dec 04 16:01:27.745 INFO [stderr]    |
Dec 04 16:01:27.745 INFO [stderr]    = note: cloning is often expensive and is not expected to have side effects
Dec 04 16:01:27.745 INFO [stderr] 
Dec 04 16:01:27.782 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.77s
Dec 04 16:01:27.787 INFO [stderr] su: No module specific data is present
Dec 04 16:01:28.932 INFO running `"docker" "inspect" "1b330c748d6fd5b66fd57212db14210fba5e9ceec84ed8be889a82d07384072f"`
Dec 04 16:01:29.281 INFO running `"docker" "rm" "-f" "1b330c748d6fd5b66fd57212db14210fba5e9ceec84ed8be889a82d07384072f"`
Dec 04 16:01:29.520 INFO [stdout] 1b330c748d6fd5b66fd57212db14210fba5e9ceec84ed8be889a82d07384072f