Dec 05 04:04:02.523 INFO checking xi-rpc-0.2.0 against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 05 04:04:02.523 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-3/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/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 +1df97983eb2057dc6a8f7eb364e263b51ae23230-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"`
Dec 05 04:04:02.767 INFO [stdout] c81779d47b74b7686bbec7372747c482d60ab35e48b1840ecd4869182275e01a
Dec 05 04:04:02.769 INFO running `"docker" "start" "-a" "c81779d47b74b7686bbec7372747c482d60ab35e48b1840ecd4869182275e01a"`
Dec 05 04:04:03.539 INFO [stderr] usermod: no changes
Dec 05 04:04:03.591 INFO [stderr]     Checking xi-rpc v0.2.0 (/source)
Dec 05 04:04:04.563 INFO [stderr] warning: variable does not need to be mutable
Dec 05 04:04:04.563 INFO [stderr]    --> src/lib.rs:326:13
Dec 05 04:04:04.563 INFO [stderr]     |
Dec 05 04:04:04.563 INFO [stderr] 326 |         let mut dict = response.as_object_mut().unwrap();
Dec 05 04:04:04.563 INFO [stderr]     |             ----^^^^
Dec 05 04:04:04.563 INFO [stderr]     |             |
Dec 05 04:04:04.563 INFO [stderr]     |             help: remove this `mut`
Dec 05 04:04:04.563 INFO [stderr]     |
Dec 05 04:04:04.563 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 05 04:04:04.563 INFO [stderr] 
Dec 05 04:04:04.563 INFO [stderr] warning: variable does not need to be mutable
Dec 05 04:04:04.563 INFO [stderr]    --> src/lib.rs:393:9
Dec 05 04:04:04.563 INFO [stderr]     |
Dec 05 04:04:04.563 INFO [stderr] 393 |     let mut dict_ref = dict.as_object_mut().expect("dict_add_value passed non-object.");
Dec 05 04:04:04.563 INFO [stderr]     |         ----^^^^^^^^
Dec 05 04:04:04.563 INFO [stderr]     |         |
Dec 05 04:04:04.563 INFO [stderr]     |         help: remove this `mut`
Dec 05 04:04:04.563 INFO [stderr] 
Dec 05 04:04:04.643 INFO [stderr] warning: variable does not need to be mutable
Dec 05 04:04:04.643 INFO [stderr]    --> src/lib.rs:326:13
Dec 05 04:04:04.643 INFO [stderr]     |
Dec 05 04:04:04.643 INFO [stderr] 326 |         let mut dict = response.as_object_mut().unwrap();
Dec 05 04:04:04.643 INFO [stderr]     |             ----^^^^
Dec 05 04:04:04.643 INFO [stderr]     |             |
Dec 05 04:04:04.643 INFO [stderr]     |             help: remove this `mut`
Dec 05 04:04:04.643 INFO [stderr]     |
Dec 05 04:04:04.643 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 05 04:04:04.643 INFO [stderr] 
Dec 05 04:04:04.643 INFO [stderr] warning: variable does not need to be mutable
Dec 05 04:04:04.643 INFO [stderr]    --> src/lib.rs:393:9
Dec 05 04:04:04.643 INFO [stderr]     |
Dec 05 04:04:04.643 INFO [stderr] 393 |     let mut dict_ref = dict.as_object_mut().expect("dict_add_value passed non-object.");
Dec 05 04:04:04.643 INFO [stderr]     |         ----^^^^^^^^
Dec 05 04:04:04.643 INFO [stderr]     |         |
Dec 05 04:04:04.643 INFO [stderr]     |         help: remove this `mut`
Dec 05 04:04:04.643 INFO [stderr] 
Dec 05 04:04:05.540 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.98s
Dec 05 04:04:05.543 INFO [stderr] su: No module specific data is present
Dec 05 04:04:06.133 INFO running `"docker" "inspect" "c81779d47b74b7686bbec7372747c482d60ab35e48b1840ecd4869182275e01a"`
Dec 05 04:04:06.296 INFO running `"docker" "rm" "-f" "c81779d47b74b7686bbec7372747c482d60ab35e48b1840ecd4869182275e01a"`
Dec 05 04:04:06.435 INFO [stdout] c81779d47b74b7686bbec7372747c482d60ab35e48b1840ecd4869182275e01a