Nov 30 00:17:49.573 INFO checking kbacha/string-clone-performance-rust against try#32252761328f59ccfadb1bafb8148c685bc830b3 for pr-56323
Nov 30 00:17:49.573 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56323/worker-5/try#32252761328f59ccfadb1bafb8148c685bc830b3:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56323/try#32252761328f59ccfadb1bafb8148c685bc830b3:/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 +32252761328f59ccfadb1bafb8148c685bc830b3-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"`
Nov 30 00:17:50.023 INFO [stdout] b0671a32d1abcd85be60591409bbd5fbffccff1078b6299f96b28efc2787279d
Nov 30 00:17:50.026 INFO running `"docker" "start" "-a" "b0671a32d1abcd85be60591409bbd5fbffccff1078b6299f96b28efc2787279d"`
Nov 30 00:17:52.479 INFO [stderr] usermod: no changes
Nov 30 00:17:52.562 INFO [stderr]     Checking string-clone-performance v0.1.0 (/source)
Nov 30 00:17:53.015 INFO [stderr] warning: unused return value of `std::clone::Clone::clone` that must be used
Nov 30 00:17:53.015 INFO [stderr]   --> src/main.rs:13:38
Nov 30 00:17:53.015 INFO [stderr]    |
Nov 30 00:17:53.015 INFO [stderr] 13 |     time("100 rs", 100_000_000, || { s.clone(); });
Nov 30 00:17:53.015 INFO [stderr]    |                                      ^^^^^^^^^^
Nov 30 00:17:53.015 INFO [stderr]    |
Nov 30 00:17:53.015 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Nov 30 00:17:53.015 INFO [stderr]    = note: cloning is often expensive and is not expected to have side effects
Nov 30 00:17:53.015 INFO [stderr] 
Nov 30 00:17:53.015 INFO [stderr] warning: unused return value of `std::clone::Clone::clone` that must be used
Nov 30 00:17:53.015 INFO [stderr]   --> src/main.rs:15:39
Nov 30 00:17:53.015 INFO [stderr]    |
Nov 30 00:17:53.015 INFO [stderr] 15 |     time("1000 rs", 100_000_000, || { s.clone(); });
Nov 30 00:17:53.015 INFO [stderr]    |                                       ^^^^^^^^^^
Nov 30 00:17:53.015 INFO [stderr]    |
Nov 30 00:17:53.015 INFO [stderr]    = note: cloning is often expensive and is not expected to have side effects
Nov 30 00:17:53.015 INFO [stderr] 
Nov 30 00:17:53.015 INFO [stderr] warning: unused return value of `std::clone::Clone::clone` that must be used
Nov 30 00:17:53.015 INFO [stderr]   --> src/main.rs:17:41
Nov 30 00:17:53.015 INFO [stderr]    |
Nov 30 00:17:53.015 INFO [stderr] 17 |     time("10,000 rs", 100_000_000, || { s.clone(); });
Nov 30 00:17:53.015 INFO [stderr]    |                                         ^^^^^^^^^^
Nov 30 00:17:53.015 INFO [stderr]    |
Nov 30 00:17:53.015 INFO [stderr]    = note: cloning is often expensive and is not expected to have side effects
Nov 30 00:17:53.015 INFO [stderr] 
Nov 30 00:17:53.015 INFO [stderr] warning: unused return value of `std::clone::Clone::clone` that must be used
Nov 30 00:17:53.015 INFO [stderr]   --> src/main.rs:19:41
Nov 30 00:17:53.015 INFO [stderr]    |
Nov 30 00:17:53.015 INFO [stderr] 19 |     time("100,000 rs", 10_000_000, || { s.clone(); });
Nov 30 00:17:53.015 INFO [stderr]    |                                         ^^^^^^^^^^
Nov 30 00:17:53.015 INFO [stderr]    |
Nov 30 00:17:53.015 INFO [stderr]    = note: cloning is often expensive and is not expected to have side effects
Nov 30 00:17:53.015 INFO [stderr] 
Nov 30 00:17:53.111 INFO [stderr] warning: unused return value of `std::clone::Clone::clone` that must be used
Nov 30 00:17:53.111 INFO [stderr]   --> src/main.rs:13:38
Nov 30 00:17:53.111 INFO [stderr]    |
Nov 30 00:17:53.111 INFO [stderr] 13 |     time("100 rs", 100_000_000, || { s.clone(); });
Nov 30 00:17:53.111 INFO [stderr]    |                                      ^^^^^^^^^^
Nov 30 00:17:53.111 INFO [stderr]    |
Nov 30 00:17:53.111 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Nov 30 00:17:53.111 INFO [stderr]    = note: cloning is often expensive and is not expected to have side effects
Nov 30 00:17:53.111 INFO [stderr] 
Nov 30 00:17:53.111 INFO [stderr] warning: unused return value of `std::clone::Clone::clone` that must be used
Nov 30 00:17:53.111 INFO [stderr]   --> src/main.rs:15:39
Nov 30 00:17:53.111 INFO [stderr]    |
Nov 30 00:17:53.111 INFO [stderr] 15 |     time("1000 rs", 100_000_000, || { s.clone(); });
Nov 30 00:17:53.111 INFO [stderr]    |                                       ^^^^^^^^^^
Nov 30 00:17:53.111 INFO [stderr]    |
Nov 30 00:17:53.111 INFO [stderr]    = note: cloning is often expensive and is not expected to have side effects
Nov 30 00:17:53.111 INFO [stderr] 
Nov 30 00:17:53.111 INFO [stderr] warning: unused return value of `std::clone::Clone::clone` that must be used
Nov 30 00:17:53.111 INFO [stderr]   --> src/main.rs:17:41
Nov 30 00:17:53.111 INFO [stderr]    |
Nov 30 00:17:53.111 INFO [stderr] 17 |     time("10,000 rs", 100_000_000, || { s.clone(); });
Nov 30 00:17:53.111 INFO [stderr]    |                                         ^^^^^^^^^^
Nov 30 00:17:53.111 INFO [stderr]    |
Nov 30 00:17:53.111 INFO [stderr]    = note: cloning is often expensive and is not expected to have side effects
Nov 30 00:17:53.112 INFO [stderr] 
Nov 30 00:17:53.112 INFO [stderr] warning: unused return value of `std::clone::Clone::clone` that must be used
Nov 30 00:17:53.112 INFO [stderr]   --> src/main.rs:19:41
Nov 30 00:17:53.112 INFO [stderr]    |
Nov 30 00:17:53.112 INFO [stderr] 19 |     time("100,000 rs", 10_000_000, || { s.clone(); });
Nov 30 00:17:53.112 INFO [stderr]    |                                         ^^^^^^^^^^
Nov 30 00:17:53.112 INFO [stderr]    |
Nov 30 00:17:53.112 INFO [stderr]    = note: cloning is often expensive and is not expected to have side effects
Nov 30 00:17:53.112 INFO [stderr] 
Nov 30 00:17:53.133 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.59s
Nov 30 00:17:53.135 INFO [stderr] su: No module specific data is present
Nov 30 00:17:53.466 INFO running `"docker" "inspect" "b0671a32d1abcd85be60591409bbd5fbffccff1078b6299f96b28efc2787279d"`
Nov 30 00:17:53.650 INFO running `"docker" "rm" "-f" "b0671a32d1abcd85be60591409bbd5fbffccff1078b6299f96b28efc2787279d"`
Nov 30 00:17:54.015 INFO [stdout] b0671a32d1abcd85be60591409bbd5fbffccff1078b6299f96b28efc2787279d