Oct 12 19:13:52.693 INFO checking kbacha/string-clone-performance-rust against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 12 19:13:52.693 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-7/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-7/pr-54977/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/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 +4021bd0b3c5815b087d6db10ce461e7e4854ade7-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 19:13:53.205 INFO blam! dd0b610d6a8af20ee1791d753f0f3cbb24de28c5e86e772638d517c5fe329529
Oct 12 19:13:53.207 INFO running `"docker" "start" "-a" "dd0b610d6a8af20ee1791d753f0f3cbb24de28c5e86e772638d517c5fe329529"`
Oct 12 19:13:55.352 INFO kablam! usermod: no changes
Oct 12 19:13:55.411 INFO kablam!     Checking string-clone-performance v0.1.0 (/source)
Oct 12 19:13:55.969 INFO kablam! warning: unused return value of `std::clone::Clone::clone` which must be used
Oct 12 19:13:55.969 INFO kablam!   --> src/main.rs:13:38
Oct 12 19:13:55.969 INFO kablam!    |
Oct 12 19:13:55.969 INFO kablam! 13 |     time("100 rs", 100_000_000, || { s.clone(); });
Oct 12 19:13:55.969 INFO kablam!    |                                      ^^^^^^^^^^
Oct 12 19:13:55.969 INFO kablam!    |
Oct 12 19:13:55.969 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Oct 12 19:13:55.969 INFO kablam!    = note: cloning is often expensive and is not expected to have side effects
Oct 12 19:13:55.969 INFO kablam! 
Oct 12 19:13:55.969 INFO kablam! warning: unused return value of `std::clone::Clone::clone` which must be used
Oct 12 19:13:55.969 INFO kablam!   --> src/main.rs:15:39
Oct 12 19:13:55.969 INFO kablam!    |
Oct 12 19:13:55.969 INFO kablam! 15 |     time("1000 rs", 100_000_000, || { s.clone(); });
Oct 12 19:13:55.969 INFO kablam!    |                                       ^^^^^^^^^^
Oct 12 19:13:55.969 INFO kablam!    |
Oct 12 19:13:55.969 INFO kablam!    = note: cloning is often expensive and is not expected to have side effects
Oct 12 19:13:55.969 INFO kablam! 
Oct 12 19:13:55.969 INFO kablam! warning: unused return value of `std::clone::Clone::clone` which must be used
Oct 12 19:13:55.969 INFO kablam!   --> src/main.rs:17:41
Oct 12 19:13:55.969 INFO kablam!    |
Oct 12 19:13:55.969 INFO kablam! 17 |     time("10,000 rs", 100_000_000, || { s.clone(); });
Oct 12 19:13:55.969 INFO kablam!    |                                         ^^^^^^^^^^
Oct 12 19:13:55.969 INFO kablam!    |
Oct 12 19:13:55.969 INFO kablam!    = note: cloning is often expensive and is not expected to have side effects
Oct 12 19:13:55.969 INFO kablam! 
Oct 12 19:13:55.969 INFO kablam! warning: unused return value of `std::clone::Clone::clone` which must be used
Oct 12 19:13:55.969 INFO kablam!   --> src/main.rs:19:41
Oct 12 19:13:55.969 INFO kablam!    |
Oct 12 19:13:55.969 INFO kablam! 19 |     time("100,000 rs", 10_000_000, || { s.clone(); });
Oct 12 19:13:55.969 INFO kablam!    |                                         ^^^^^^^^^^
Oct 12 19:13:55.969 INFO kablam!    |
Oct 12 19:13:55.969 INFO kablam!    = note: cloning is often expensive and is not expected to have side effects
Oct 12 19:13:55.969 INFO kablam! 
Oct 12 19:13:56.049 INFO kablam! warning: unused return value of `std::clone::Clone::clone` which must be used
Oct 12 19:13:56.049 INFO kablam!   --> src/main.rs:13:38
Oct 12 19:13:56.050 INFO kablam!    |
Oct 12 19:13:56.050 INFO kablam! 13 |     time("100 rs", 100_000_000, || { s.clone(); });
Oct 12 19:13:56.050 INFO kablam!    |                                      ^^^^^^^^^^
Oct 12 19:13:56.050 INFO kablam!    |
Oct 12 19:13:56.050 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Oct 12 19:13:56.050 INFO kablam!    = note: cloning is often expensive and is not expected to have side effects
Oct 12 19:13:56.050 INFO kablam! 
Oct 12 19:13:56.050 INFO kablam! warning: unused return value of `std::clone::Clone::clone` which must be used
Oct 12 19:13:56.050 INFO kablam!   --> src/main.rs:15:39
Oct 12 19:13:56.050 INFO kablam!    |
Oct 12 19:13:56.050 INFO kablam! 15 |     time("1000 rs", 100_000_000, || { s.clone(); });
Oct 12 19:13:56.050 INFO kablam!    |                                       ^^^^^^^^^^
Oct 12 19:13:56.050 INFO kablam!    |
Oct 12 19:13:56.050 INFO kablam!    = note: cloning is often expensive and is not expected to have side effects
Oct 12 19:13:56.050 INFO kablam! 
Oct 12 19:13:56.050 INFO kablam! warning: unused return value of `std::clone::Clone::clone` which must be used
Oct 12 19:13:56.050 INFO kablam!   --> src/main.rs:17:41
Oct 12 19:13:56.050 INFO kablam!    |
Oct 12 19:13:56.051 INFO kablam! 17 |     time("10,000 rs", 100_000_000, || { s.clone(); });
Oct 12 19:13:56.051 INFO kablam!    |                                         ^^^^^^^^^^
Oct 12 19:13:56.051 INFO kablam!    |
Oct 12 19:13:56.051 INFO kablam!    = note: cloning is often expensive and is not expected to have side effects
Oct 12 19:13:56.051 INFO kablam! 
Oct 12 19:13:56.051 INFO kablam! warning: unused return value of `std::clone::Clone::clone` which must be used
Oct 12 19:13:56.051 INFO kablam!   --> src/main.rs:19:41
Oct 12 19:13:56.051 INFO kablam!    |
Oct 12 19:13:56.051 INFO kablam! 19 |     time("100,000 rs", 10_000_000, || { s.clone(); });
Oct 12 19:13:56.051 INFO kablam!    |                                         ^^^^^^^^^^
Oct 12 19:13:56.051 INFO kablam!    |
Oct 12 19:13:56.051 INFO kablam!    = note: cloning is often expensive and is not expected to have side effects
Oct 12 19:13:56.051 INFO kablam! 
Oct 12 19:13:56.100 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.73s
Oct 12 19:13:56.102 INFO kablam! su: No module specific data is present
Oct 12 19:13:57.361 INFO running `"docker" "rm" "-f" "dd0b610d6a8af20ee1791d753f0f3cbb24de28c5e86e772638d517c5fe329529"`
Oct 12 19:13:57.661 INFO blam! dd0b610d6a8af20ee1791d753f0f3cbb24de28c5e86e772638d517c5fe329529