Dec 07 09:44:06.466 INFO testing jec-rccow-0.1.0 against try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468 for pr-56514
Dec 07 09:44:06.466 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-7/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/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 +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-alt build --frozen" "-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 07 09:44:06.992 INFO [stdout] 6760835735fee43221bd9193820a89ce7e0f092cefa469d5de9641b0cf05808e
Dec 07 09:44:07.000 INFO running `"docker" "start" "-a" "6760835735fee43221bd9193820a89ce7e0f092cefa469d5de9641b0cf05808e"`
Dec 07 09:44:08.548 INFO [stderr] usermod: no changes
Dec 07 09:44:08.632 INFO [stderr]    Compiling jec-rccow v0.1.0 (/source)
Dec 07 09:44:09.289 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.72s
Dec 07 09:44:09.292 INFO [stderr] su: No module specific data is present
Dec 07 09:44:10.211 INFO running `"docker" "inspect" "6760835735fee43221bd9193820a89ce7e0f092cefa469d5de9641b0cf05808e"`
Dec 07 09:44:10.512 INFO running `"docker" "rm" "-f" "6760835735fee43221bd9193820a89ce7e0f092cefa469d5de9641b0cf05808e"`
Dec 07 09:44:10.804 INFO [stdout] 6760835735fee43221bd9193820a89ce7e0f092cefa469d5de9641b0cf05808e
Dec 07 09:44:10.812 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-7/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/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 +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-alt test --frozen --no-run" "-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 07 09:44:11.294 INFO [stdout] 1edfb09bc9f910237d21406ac5f6913c0e6c2512b2d5007029826aa3a5556a67
Dec 07 09:44:11.300 INFO running `"docker" "start" "-a" "1edfb09bc9f910237d21406ac5f6913c0e6c2512b2d5007029826aa3a5556a67"`
Dec 07 09:44:12.932 INFO [stderr] usermod: no changes
Dec 07 09:44:12.974 INFO [stderr]    Compiling jec-rccow v0.1.0 (/source)
Dec 07 09:44:13.754 INFO [stderr] warning: variable does not need to be mutable
Dec 07 09:44:13.754 INFO [stderr]   --> src/lib.rs:73:13
Dec 07 09:44:13.754 INFO [stderr]    |
Dec 07 09:44:13.754 INFO [stderr] 73 |         let mut a = RcCow::new(5i32);
Dec 07 09:44:13.754 INFO [stderr]    |             ----^
Dec 07 09:44:13.754 INFO [stderr]    |             |
Dec 07 09:44:13.754 INFO [stderr]    |             help: remove this `mut`
Dec 07 09:44:13.754 INFO [stderr]    |
Dec 07 09:44:13.754 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 07 09:44:13.754 INFO [stderr] 
Dec 07 09:44:13.755 INFO [stderr] warning: variable does not need to be mutable
Dec 07 09:44:13.755 INFO [stderr]   --> src/lib.rs:77:13
Dec 07 09:44:13.755 INFO [stderr]    |
Dec 07 09:44:13.755 INFO [stderr] 77 |         let mut c = b.clone();
Dec 07 09:44:13.756 INFO [stderr]    |             ----^
Dec 07 09:44:13.760 INFO [stderr]    |             |
Dec 07 09:44:13.760 INFO [stderr]    |             help: remove this `mut`
Dec 07 09:44:13.760 INFO [stderr] 
Dec 07 09:44:14.341 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.39s
Dec 07 09:44:14.343 INFO [stderr] su: No module specific data is present
Dec 07 09:44:14.974 INFO running `"docker" "inspect" "1edfb09bc9f910237d21406ac5f6913c0e6c2512b2d5007029826aa3a5556a67"`
Dec 07 09:44:15.257 INFO running `"docker" "rm" "-f" "1edfb09bc9f910237d21406ac5f6913c0e6c2512b2d5007029826aa3a5556a67"`
Dec 07 09:44:15.634 INFO [stdout] 1edfb09bc9f910237d21406ac5f6913c0e6c2512b2d5007029826aa3a5556a67