Dec 03 04:16:59.953 INFO testing jec-rccow-0.1.0 against 1.30.1 for beta-1.31-5
Dec 03 04:16:59.953 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-7/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/beta-1.31-5/1.30.1:/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 +1.30.1 build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 03 04:17:00.331 INFO [stdout] e7ffbd866e1986c0b17fb7fd14860af8b72672b2bcff3ae5a78befbfb2902e83
Dec 03 04:17:00.332 INFO running `"docker" "start" "-a" "e7ffbd866e1986c0b17fb7fd14860af8b72672b2bcff3ae5a78befbfb2902e83"`
Dec 03 04:17:01.339 INFO [stderr] usermod: no changes
Dec 03 04:17:01.399 INFO [stderr]    Compiling jec-rccow v0.1.0 (/source)
Dec 03 04:17:02.131 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.75s
Dec 03 04:17:02.131 INFO [stderr] su: No module specific data is present
Dec 03 04:17:02.807 INFO running `"docker" "inspect" "e7ffbd866e1986c0b17fb7fd14860af8b72672b2bcff3ae5a78befbfb2902e83"`
Dec 03 04:17:03.068 INFO running `"docker" "rm" "-f" "e7ffbd866e1986c0b17fb7fd14860af8b72672b2bcff3ae5a78befbfb2902e83"`
Dec 03 04:17:03.472 INFO [stdout] e7ffbd866e1986c0b17fb7fd14860af8b72672b2bcff3ae5a78befbfb2902e83
Dec 03 04:17:03.479 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-7/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/beta-1.31-5/1.30.1:/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 +1.30.1 test --frozen --no-run" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 03 04:17:03.960 INFO [stdout] de88c1ece57b9abfdcefe0092fdb2a7ae82e1ff2d144657de320b108641e9f74
Dec 03 04:17:03.962 INFO running `"docker" "start" "-a" "de88c1ece57b9abfdcefe0092fdb2a7ae82e1ff2d144657de320b108641e9f74"`
Dec 03 04:17:05.091 INFO [stderr] usermod: no changes
Dec 03 04:17:05.155 INFO [stderr]    Compiling jec-rccow v0.1.0 (/source)
Dec 03 04:17:06.103 INFO [stderr] warning: variable does not need to be mutable
Dec 03 04:17:06.103 INFO [stderr]   --> src/lib.rs:73:13
Dec 03 04:17:06.103 INFO [stderr]    |
Dec 03 04:17:06.103 INFO [stderr] 73 |         let mut a = RcCow::new(5i32);
Dec 03 04:17:06.103 INFO [stderr]    |             ----^
Dec 03 04:17:06.103 INFO [stderr]    |             |
Dec 03 04:17:06.103 INFO [stderr]    |             help: remove this `mut`
Dec 03 04:17:06.103 INFO [stderr]    |
Dec 03 04:17:06.103 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 03 04:17:06.103 INFO [stderr] 
Dec 03 04:17:06.103 INFO [stderr] warning: variable does not need to be mutable
Dec 03 04:17:06.103 INFO [stderr]   --> src/lib.rs:77:13
Dec 03 04:17:06.103 INFO [stderr]    |
Dec 03 04:17:06.103 INFO [stderr] 77 |         let mut c = b.clone();
Dec 03 04:17:06.103 INFO [stderr]    |             ----^
Dec 03 04:17:06.103 INFO [stderr]    |             |
Dec 03 04:17:06.103 INFO [stderr]    |             help: remove this `mut`
Dec 03 04:17:06.103 INFO [stderr] 
Dec 03 04:17:06.688 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.56s
Dec 03 04:17:06.688 INFO [stderr] su: No module specific data is present
Dec 03 04:17:07.331 INFO running `"docker" "inspect" "de88c1ece57b9abfdcefe0092fdb2a7ae82e1ff2d144657de320b108641e9f74"`
Dec 03 04:17:07.557 INFO running `"docker" "rm" "-f" "de88c1ece57b9abfdcefe0092fdb2a7ae82e1ff2d144657de320b108641e9f74"`
Dec 03 04:17:07.825 INFO [stdout] de88c1ece57b9abfdcefe0092fdb2a7ae82e1ff2d144657de320b108641e9f74
