Dec 05 04:04:02.652 INFO checking xi-rpc-0.2.0 against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 05 04:04:02.652 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-2/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/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 +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-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 04:04:02.923 INFO [stdout] abf46eb87394e36fd347fa6f2a37723eb6623dfa9e96bf56163ba9ed1a76ab5d
Dec 05 04:04:02.931 INFO running `"docker" "start" "-a" "abf46eb87394e36fd347fa6f2a37723eb6623dfa9e96bf56163ba9ed1a76ab5d"`
Dec 05 04:04:03.973 INFO [stderr] usermod: no changes
Dec 05 04:04:04.082 INFO [stderr]     Checking xi-rpc v0.2.0 (/source)
Dec 05 04:04:05.171 INFO [stderr] warning: variable does not need to be mutable
Dec 05 04:04:05.171 INFO [stderr]    --> src/lib.rs:326:13
Dec 05 04:04:05.171 INFO [stderr]     |
Dec 05 04:04:05.171 INFO [stderr] 326 |         let mut dict = response.as_object_mut().unwrap();
Dec 05 04:04:05.171 INFO [stderr]     |             ----^^^^
Dec 05 04:04:05.171 INFO [stderr]     |             |
Dec 05 04:04:05.171 INFO [stderr]     |             help: remove this `mut`
Dec 05 04:04:05.171 INFO [stderr]     |
Dec 05 04:04:05.171 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 05 04:04:05.171 INFO [stderr] 
Dec 05 04:04:05.171 INFO [stderr] warning: variable does not need to be mutable
Dec 05 04:04:05.171 INFO [stderr]    --> src/lib.rs:393:9
Dec 05 04:04:05.171 INFO [stderr]     |
Dec 05 04:04:05.171 INFO [stderr] 393 |     let mut dict_ref = dict.as_object_mut().expect("dict_add_value passed non-object.");
Dec 05 04:04:05.171 INFO [stderr]     |         ----^^^^^^^^
Dec 05 04:04:05.171 INFO [stderr]     |         |
Dec 05 04:04:05.171 INFO [stderr]     |         help: remove this `mut`
Dec 05 04:04:05.171 INFO [stderr] 
Dec 05 04:04:05.210 INFO [stderr] warning: variable does not need to be mutable
Dec 05 04:04:05.211 INFO [stderr]    --> src/lib.rs:326:13
Dec 05 04:04:05.211 INFO [stderr]     |
Dec 05 04:04:05.211 INFO [stderr] 326 |         let mut dict = response.as_object_mut().unwrap();
Dec 05 04:04:05.211 INFO [stderr]     |             ----^^^^
Dec 05 04:04:05.211 INFO [stderr]     |             |
Dec 05 04:04:05.211 INFO [stderr]     |             help: remove this `mut`
Dec 05 04:04:05.211 INFO [stderr]     |
Dec 05 04:04:05.211 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 05 04:04:05.211 INFO [stderr] 
Dec 05 04:04:05.215 INFO [stderr] warning: variable does not need to be mutable
Dec 05 04:04:05.215 INFO [stderr]    --> src/lib.rs:393:9
Dec 05 04:04:05.215 INFO [stderr]     |
Dec 05 04:04:05.215 INFO [stderr] 393 |     let mut dict_ref = dict.as_object_mut().expect("dict_add_value passed non-object.");
Dec 05 04:04:05.215 INFO [stderr]     |         ----^^^^^^^^
Dec 05 04:04:05.215 INFO [stderr]     |         |
Dec 05 04:04:05.215 INFO [stderr]     |         help: remove this `mut`
Dec 05 04:04:05.215 INFO [stderr] 
Dec 05 04:04:06.003 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.01s
Dec 05 04:04:06.007 INFO [stderr] su: No module specific data is present
Dec 05 04:04:06.553 INFO running `"docker" "inspect" "abf46eb87394e36fd347fa6f2a37723eb6623dfa9e96bf56163ba9ed1a76ab5d"`
Dec 05 04:04:06.661 INFO running `"docker" "rm" "-f" "abf46eb87394e36fd347fa6f2a37723eb6623dfa9e96bf56163ba9ed1a76ab5d"`
Dec 05 04:04:06.879 INFO [stdout] abf46eb87394e36fd347fa6f2a37723eb6623dfa9e96bf56163ba9ed1a76ab5d