Oct 12 19:13:57.751 INFO checking kbacha/string-clone-performance-rust against master#5af0bb83044c3fb43d59ad5f49ee5ae1a293901f for pr-54977
Oct 12 19:13:57.753 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-7/master#5af0bb83044c3fb43d59ad5f49ee5ae1a293901f:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-7/pr-54977/master#5af0bb83044c3fb43d59ad5f49ee5ae1a293901f:/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 +5af0bb83044c3fb43d59ad5f49ee5ae1a293901f-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"`
Oct 12 19:13:58.228 INFO blam! a03f81e983484a183640cd518d3af71d1b50fe3763835420cc975ec65c900c9a
Oct 12 19:13:58.230 INFO running `"docker" "start" "-a" "a03f81e983484a183640cd518d3af71d1b50fe3763835420cc975ec65c900c9a"`
Oct 12 19:14:00.292 INFO kablam! usermod: no changes
Oct 12 19:14:00.339 INFO kablam!     Checking string-clone-performance v0.1.0 (/source)
Oct 12 19:14:00.782 INFO kablam! warning: unused return value of `std::clone::Clone::clone` which must be used
Oct 12 19:14:00.783 INFO kablam!   --> src/main.rs:13:38
Oct 12 19:14:00.784 INFO kablam!    |
Oct 12 19:14:00.785 INFO kablam! 13 |     time("100 rs", 100_000_000, || { s.clone(); });
Oct 12 19:14:00.785 INFO kablam!    |                                      ^^^^^^^^^^
Oct 12 19:14:00.786 INFO kablam!    |
Oct 12 19:14:00.787 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Oct 12 19:14:00.787 INFO kablam!    = note: cloning is often expensive and is not expected to have side effects
Oct 12 19:14:00.788 INFO kablam! 
Oct 12 19:14:00.789 INFO kablam! warning: unused return value of `std::clone::Clone::clone` which must be used
Oct 12 19:14:00.789 INFO kablam!   --> src/main.rs:15:39
Oct 12 19:14:00.789 INFO kablam!    |
Oct 12 19:14:00.789 INFO kablam! 15 |     time("1000 rs", 100_000_000, || { s.clone(); });
Oct 12 19:14:00.789 INFO kablam!    |                                       ^^^^^^^^^^
Oct 12 19:14:00.790 INFO kablam!    |
Oct 12 19:14:00.790 INFO kablam!    = note: cloning is often expensive and is not expected to have side effects
Oct 12 19:14:00.790 INFO kablam! 
Oct 12 19:14:00.791 INFO kablam! warning: unused return value of `std::clone::Clone::clone` which must be used
Oct 12 19:14:00.791 INFO kablam!   --> src/main.rs:17:41
Oct 12 19:14:00.791 INFO kablam!    |
Oct 12 19:14:00.791 INFO kablam! 17 |     time("10,000 rs", 100_000_000, || { s.clone(); });
Oct 12 19:14:00.791 INFO kablam!    |                                         ^^^^^^^^^^
Oct 12 19:14:00.792 INFO kablam!    |
Oct 12 19:14:00.792 INFO kablam!    = note: cloning is often expensive and is not expected to have side effects
Oct 12 19:14:00.793 INFO kablam! 
Oct 12 19:14:00.794 INFO kablam! warning: unused return value of `std::clone::Clone::clone` which must be used
Oct 12 19:14:00.794 INFO kablam!   --> src/main.rs:19:41
Oct 12 19:14:00.794 INFO kablam!    |
Oct 12 19:14:00.794 INFO kablam! 19 |     time("100,000 rs", 10_000_000, || { s.clone(); });
Oct 12 19:14:00.794 INFO kablam!    |                                         ^^^^^^^^^^
Oct 12 19:14:00.794 INFO kablam!    |
Oct 12 19:14:00.795 INFO kablam!    = note: cloning is often expensive and is not expected to have side effects
Oct 12 19:14:00.795 INFO kablam! 
Oct 12 19:14:01.073 INFO kablam! warning: unused return value of `std::clone::Clone::clone` which must be used
Oct 12 19:14:01.074 INFO kablam!   --> src/main.rs:13:38
Oct 12 19:14:01.074 INFO kablam!    |
Oct 12 19:14:01.075 INFO kablam! 13 |     time("100 rs", 100_000_000, || { s.clone(); });
Oct 12 19:14:01.076 INFO kablam!    |                                      ^^^^^^^^^^
Oct 12 19:14:01.077 INFO kablam!    |
Oct 12 19:14:01.077 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Oct 12 19:14:01.078 INFO kablam!    = note: cloning is often expensive and is not expected to have side effects
Oct 12 19:14:01.079 INFO kablam! 
Oct 12 19:14:01.079 INFO kablam! warning: unused return value of `std::clone::Clone::clone` which must be used
Oct 12 19:14:01.080 INFO kablam!   --> src/main.rs:15:39
Oct 12 19:14:01.081 INFO kablam!    |
Oct 12 19:14:01.081 INFO kablam! 15 |     time("1000 rs", 100_000_000, || { s.clone(); });
Oct 12 19:14:01.082 INFO kablam!    |                                       ^^^^^^^^^^
Oct 12 19:14:01.083 INFO kablam!    |
Oct 12 19:14:01.083 INFO kablam!    = note: cloning is often expensive and is not expected to have side effects
Oct 12 19:14:01.083 INFO kablam! 
Oct 12 19:14:01.083 INFO kablam! warning: unused return value of `std::clone::Clone::clone` which must be used
Oct 12 19:14:01.083 INFO kablam!   --> src/main.rs:17:41
Oct 12 19:14:01.083 INFO kablam!    |
Oct 12 19:14:01.083 INFO kablam! 17 |     time("10,000 rs", 100_000_000, || { s.clone(); });
Oct 12 19:14:01.083 INFO kablam!    |                                         ^^^^^^^^^^
Oct 12 19:14:01.083 INFO kablam!    |
Oct 12 19:14:01.083 INFO kablam!    = note: cloning is often expensive and is not expected to have side effects
Oct 12 19:14:01.083 INFO kablam! 
Oct 12 19:14:01.084 INFO kablam! warning: unused return value of `std::clone::Clone::clone` which must be used
Oct 12 19:14:01.084 INFO kablam!   --> src/main.rs:19:41
Oct 12 19:14:01.084 INFO kablam!    |
Oct 12 19:14:01.084 INFO kablam! 19 |     time("100,000 rs", 10_000_000, || { s.clone(); });
Oct 12 19:14:01.088 INFO kablam!    |                                         ^^^^^^^^^^
Oct 12 19:14:01.088 INFO kablam!    |
Oct 12 19:14:01.088 INFO kablam!    = note: cloning is often expensive and is not expected to have side effects
Oct 12 19:14:01.088 INFO kablam! 
Oct 12 19:14:01.109 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.79s
Oct 12 19:14:01.112 INFO kablam! su: No module specific data is present
Oct 12 19:14:02.585 INFO running `"docker" "rm" "-f" "a03f81e983484a183640cd518d3af71d1b50fe3763835420cc975ec65c900c9a"`
Oct 12 19:14:02.940 INFO blam! a03f81e983484a183640cd518d3af71d1b50fe3763835420cc975ec65c900c9a