Nov 18 08:25:46.590 INFO testing jec-rccow-0.1.0 against master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c for pr-55982
Nov 18 08:25:46.590 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-3/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-55982/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/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 +6b9b97bd9b704f85f0184f7a213cc4d62bd9654c-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"`
Nov 18 08:25:46.804 INFO [stdout] 608772ed2070fd8b3bba996a250508d59e46c601725dd826246c269d9f9bc3fd
Nov 18 08:25:46.809 INFO running `"docker" "start" "-a" "608772ed2070fd8b3bba996a250508d59e46c601725dd826246c269d9f9bc3fd"`
Nov 18 08:25:47.295 INFO [stderr] usermod: no changes
Nov 18 08:25:47.322 INFO [stderr]    Compiling jec-rccow v0.1.0 (/source)
Nov 18 08:25:47.764 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.45s
Nov 18 08:25:47.766 INFO [stderr] su: No module specific data is present
Nov 18 08:25:48.064 INFO running `"docker" "inspect" "608772ed2070fd8b3bba996a250508d59e46c601725dd826246c269d9f9bc3fd"`
Nov 18 08:25:48.188 INFO running `"docker" "rm" "-f" "608772ed2070fd8b3bba996a250508d59e46c601725dd826246c269d9f9bc3fd"`
Nov 18 08:25:48.320 INFO [stdout] 608772ed2070fd8b3bba996a250508d59e46c601725dd826246c269d9f9bc3fd
Nov 18 08:25:48.321 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-3/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-55982/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/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 +6b9b97bd9b704f85f0184f7a213cc4d62bd9654c-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"`
Nov 18 08:25:48.567 INFO [stdout] c8e278f82b6411fabb73d8acdebc0eab5259bb02b9ad415c98d337f3ee73df92
Nov 18 08:25:48.629 INFO running `"docker" "start" "-a" "c8e278f82b6411fabb73d8acdebc0eab5259bb02b9ad415c98d337f3ee73df92"`
Nov 18 08:25:49.113 INFO [stderr] usermod: no changes
Nov 18 08:25:49.151 INFO [stderr]    Compiling jec-rccow v0.1.0 (/source)
Nov 18 08:25:49.679 INFO [stderr] warning: variable does not need to be mutable
Nov 18 08:25:49.679 INFO [stderr]   --> src/lib.rs:73:13
Nov 18 08:25:49.679 INFO [stderr]    |
Nov 18 08:25:49.679 INFO [stderr] 73 |         let mut a = RcCow::new(5i32);
Nov 18 08:25:49.679 INFO [stderr]    |             ----^
Nov 18 08:25:49.679 INFO [stderr]    |             |
Nov 18 08:25:49.679 INFO [stderr]    |             help: remove this `mut`
Nov 18 08:25:49.679 INFO [stderr]    |
Nov 18 08:25:49.679 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 18 08:25:49.679 INFO [stderr] 
Nov 18 08:25:49.679 INFO [stderr] warning: variable does not need to be mutable
Nov 18 08:25:49.679 INFO [stderr]   --> src/lib.rs:77:13
Nov 18 08:25:49.679 INFO [stderr]    |
Nov 18 08:25:49.679 INFO [stderr] 77 |         let mut c = b.clone();
Nov 18 08:25:49.679 INFO [stderr]    |             ----^
Nov 18 08:25:49.679 INFO [stderr]    |             |
Nov 18 08:25:49.679 INFO [stderr]    |             help: remove this `mut`
Nov 18 08:25:49.679 INFO [stderr] 
Nov 18 08:25:49.968 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.84s
Nov 18 08:25:49.970 INFO [stderr] su: No module specific data is present
Nov 18 08:25:50.287 INFO running `"docker" "inspect" "c8e278f82b6411fabb73d8acdebc0eab5259bb02b9ad415c98d337f3ee73df92"`
Nov 18 08:25:50.425 INFO running `"docker" "rm" "-f" "c8e278f82b6411fabb73d8acdebc0eab5259bb02b9ad415c98d337f3ee73df92"`
Nov 18 08:25:50.562 INFO [stdout] c8e278f82b6411fabb73d8acdebc0eab5259bb02b9ad415c98d337f3ee73df92