Nov 30 12:42:03.217 INFO checking xi-rpc-0.2.0 against try#32252761328f59ccfadb1bafb8148c685bc830b3 for pr-56323
Nov 30 12:42:03.217 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56323/worker-3/try#32252761328f59ccfadb1bafb8148c685bc830b3:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56323/try#32252761328f59ccfadb1bafb8148c685bc830b3:/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 +32252761328f59ccfadb1bafb8148c685bc830b3-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 30 12:42:03.646 INFO [stdout] 8f74ae9c9af3d5b42ec7bdcac80b414eb25230e93606e30eba55fd4ec3ee75a9
Nov 30 12:42:03.648 INFO running `"docker" "start" "-a" "8f74ae9c9af3d5b42ec7bdcac80b414eb25230e93606e30eba55fd4ec3ee75a9"`
Nov 30 12:42:04.941 INFO [stderr] usermod: no changes
Nov 30 12:42:05.000 INFO [stderr]     Checking xi-rpc v0.2.0 (/source)
Nov 30 12:42:05.908 INFO [stderr] warning: variable does not need to be mutable
Nov 30 12:42:05.908 INFO [stderr]    --> src/lib.rs:326:13
Nov 30 12:42:05.908 INFO [stderr]     |
Nov 30 12:42:05.908 INFO [stderr] 326 |         let mut dict = response.as_object_mut().unwrap();
Nov 30 12:42:05.908 INFO [stderr]     |             ----^^^^
Nov 30 12:42:05.908 INFO [stderr]     |             |
Nov 30 12:42:05.908 INFO [stderr]     |             help: remove this `mut`
Nov 30 12:42:05.908 INFO [stderr]     |
Nov 30 12:42:05.908 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Nov 30 12:42:05.908 INFO [stderr] 
Nov 30 12:42:05.924 INFO [stderr] warning: variable does not need to be mutable
Nov 30 12:42:05.924 INFO [stderr]    --> src/lib.rs:393:9
Nov 30 12:42:05.924 INFO [stderr]     |
Nov 30 12:42:05.924 INFO [stderr] 393 |     let mut dict_ref = dict.as_object_mut().expect("dict_add_value passed non-object.");
Nov 30 12:42:05.924 INFO [stderr]     |         ----^^^^^^^^
Nov 30 12:42:05.924 INFO [stderr]     |         |
Nov 30 12:42:05.924 INFO [stderr]     |         help: remove this `mut`
Nov 30 12:42:05.924 INFO [stderr] 
Nov 30 12:42:06.124 INFO [stderr] warning: variable does not need to be mutable
Nov 30 12:42:06.124 INFO [stderr]    --> src/lib.rs:326:13
Nov 30 12:42:06.124 INFO [stderr]     |
Nov 30 12:42:06.124 INFO [stderr] 326 |         let mut dict = response.as_object_mut().unwrap();
Nov 30 12:42:06.124 INFO [stderr]     |             ----^^^^
Nov 30 12:42:06.124 INFO [stderr]     |             |
Nov 30 12:42:06.124 INFO [stderr]     |             help: remove this `mut`
Nov 30 12:42:06.124 INFO [stderr]     |
Nov 30 12:42:06.124 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Nov 30 12:42:06.124 INFO [stderr] 
Nov 30 12:42:06.132 INFO [stderr] warning: variable does not need to be mutable
Nov 30 12:42:06.136 INFO [stderr]    --> src/lib.rs:393:9
Nov 30 12:42:06.136 INFO [stderr]     |
Nov 30 12:42:06.136 INFO [stderr] 393 |     let mut dict_ref = dict.as_object_mut().expect("dict_add_value passed non-object.");
Nov 30 12:42:06.136 INFO [stderr]     |         ----^^^^^^^^
Nov 30 12:42:06.136 INFO [stderr]     |         |
Nov 30 12:42:06.136 INFO [stderr]     |         help: remove this `mut`
Nov 30 12:42:06.136 INFO [stderr] 
Nov 30 12:42:06.732 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.77s
Nov 30 12:42:06.736 INFO [stderr] su: No module specific data is present
Nov 30 12:42:07.196 INFO running `"docker" "inspect" "8f74ae9c9af3d5b42ec7bdcac80b414eb25230e93606e30eba55fd4ec3ee75a9"`
Nov 30 12:42:07.539 INFO running `"docker" "rm" "-f" "8f74ae9c9af3d5b42ec7bdcac80b414eb25230e93606e30eba55fd4ec3ee75a9"`
Nov 30 12:42:07.772 INFO [stdout] 8f74ae9c9af3d5b42ec7bdcac80b414eb25230e93606e30eba55fd4ec3ee75a9