Nov 01 20:57:28.600 INFO checking jec-rccow-0.1.0 against try#d7816399d50d407bbce1efe9dbadf8faaaf568fc for pr-55538
Nov 01 20:57:28.602 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55538/worker-1/try#d7816399d50d407bbce1efe9dbadf8faaaf568fc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-55538/try#d7816399d50d407bbce1efe9dbadf8faaaf568fc:/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 +d7816399d50d407bbce1efe9dbadf8faaaf568fc-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 01 20:57:29.061 INFO blam! 2ebc7f9a49c377b419674362858dc94f63303e1ae47e5e4db699031995c74a04
Nov 01 20:57:29.062 INFO running `"docker" "start" "-a" "2ebc7f9a49c377b419674362858dc94f63303e1ae47e5e4db699031995c74a04"`
Nov 01 20:57:30.373 INFO kablam! usermod: no changes
Nov 01 20:57:30.429 INFO kablam!     Checking jec-rccow v0.1.0 (/source)
Nov 01 20:57:31.399 INFO kablam! warning: variable does not need to be mutable
Nov 01 20:57:31.399 INFO kablam!   --> src/lib.rs:73:13
Nov 01 20:57:31.399 INFO kablam!    |
Nov 01 20:57:31.399 INFO kablam! 73 |         let mut a = RcCow::new(5i32);
Nov 01 20:57:31.399 INFO kablam!    |             ----^
Nov 01 20:57:31.399 INFO kablam!    |             |
Nov 01 20:57:31.399 INFO kablam!    |             help: remove this `mut`
Nov 01 20:57:31.399 INFO kablam!    |
Nov 01 20:57:31.399 INFO kablam!    = note: #[warn(unused_mut)] on by default
Nov 01 20:57:31.399 INFO kablam! 
Nov 01 20:57:31.399 INFO kablam! warning: variable does not need to be mutable
Nov 01 20:57:31.399 INFO kablam!   --> src/lib.rs:77:13
Nov 01 20:57:31.399 INFO kablam!    |
Nov 01 20:57:31.399 INFO kablam! 77 |         let mut c = b.clone();
Nov 01 20:57:31.399 INFO kablam!    |             ----^
Nov 01 20:57:31.399 INFO kablam!    |             |
Nov 01 20:57:31.399 INFO kablam!    |             help: remove this `mut`
Nov 01 20:57:31.399 INFO kablam! 
Nov 01 20:57:31.411 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.01s
Nov 01 20:57:31.424 INFO kablam! su: No module specific data is present
Nov 01 20:57:31.915 INFO running `"docker" "rm" "-f" "2ebc7f9a49c377b419674362858dc94f63303e1ae47e5e4db699031995c74a04"`
Nov 01 20:57:32.038 INFO blam! 2ebc7f9a49c377b419674362858dc94f63303e1ae47e5e4db699031995c74a04