Dec 18 11:04:27.224 INFO checking snoot-0.1.2 against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 11:04:27.224 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-0/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/reg/snoot/0.1.2:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 11:04:27.568 INFO [stdout] 338bdc128630d5e13a27fae835a36273bfcd474b7697a861d81714f060da167b
Dec 18 11:04:27.578 INFO running `"docker" "start" "-a" "338bdc128630d5e13a27fae835a36273bfcd474b7697a861d81714f060da167b"`
Dec 18 11:04:28.696 INFO [stderr]     Checking utf-8 v0.6.0
Dec 18 11:04:29.055 INFO [stderr]     Checking tendril v0.2.4
Dec 18 11:04:30.004 INFO [stderr]     Checking snoot v0.1.2 (/opt/crater/workdir)
Dec 18 11:04:31.688 INFO [stderr] warning: variable does not need to be mutable
Dec 18 11:04:31.688 INFO [stderr]    --> src/serde_serialization/mod.rs:300:29
Dec 18 11:04:31.688 INFO [stderr]     |
Dec 18 11:04:31.688 INFO [stderr] 300 |     fn deserialize_tuple<V>(mut self, len: usize, visitor: V) -> Result<V::Value, Self::Error>
Dec 18 11:04:31.688 INFO [stderr]     |                             ----^^^^
Dec 18 11:04:31.688 INFO [stderr]     |                             |
Dec 18 11:04:31.688 INFO [stderr]     |                             help: remove this `mut`
Dec 18 11:04:31.688 INFO [stderr]     |
Dec 18 11:04:31.688 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 18 11:04:31.688 INFO [stderr] 
Dec 18 11:04:31.688 INFO [stderr] warning: variable does not need to be mutable
Dec 18 11:04:31.688 INFO [stderr]    --> src/serde_serialization/mod.rs:310:36
Dec 18 11:04:31.688 INFO [stderr]     |
Dec 18 11:04:31.688 INFO [stderr] 310 |     fn deserialize_tuple_struct<V>(mut self,
Dec 18 11:04:31.688 INFO [stderr]     |                                    ----^^^^
Dec 18 11:04:31.688 INFO [stderr]     |                                    |
Dec 18 11:04:31.688 INFO [stderr]     |                                    help: remove this `mut`
Dec 18 11:04:31.688 INFO [stderr] 
Dec 18 11:04:31.697 INFO [stderr] warning: variable does not need to be mutable
Dec 18 11:04:31.697 INFO [stderr]    --> src/serde_serialization/mod.rs:357:30
Dec 18 11:04:31.697 INFO [stderr]     |
Dec 18 11:04:31.697 INFO [stderr] 357 |     fn deserialize_struct<V>(mut self,
Dec 18 11:04:31.697 INFO [stderr]     |                              ----^^^^
Dec 18 11:04:31.697 INFO [stderr]     |                              |
Dec 18 11:04:31.697 INFO [stderr]     |                              help: remove this `mut`
Dec 18 11:04:31.697 INFO [stderr] 
Dec 18 11:04:32.368 INFO [stderr] warning: variable does not need to be mutable
Dec 18 11:04:32.368 INFO [stderr]    --> src/serde_serialization/mod.rs:300:29
Dec 18 11:04:32.368 INFO [stderr]     |
Dec 18 11:04:32.368 INFO [stderr] 300 |     fn deserialize_tuple<V>(mut self, len: usize, visitor: V) -> Result<V::Value, Self::Error>
Dec 18 11:04:32.368 INFO [stderr]     |                             ----^^^^
Dec 18 11:04:32.368 INFO [stderr]     |                             |
Dec 18 11:04:32.368 INFO [stderr]     |                             help: remove this `mut`
Dec 18 11:04:32.368 INFO [stderr]     |
Dec 18 11:04:32.368 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 18 11:04:32.368 INFO [stderr] 
Dec 18 11:04:32.368 INFO [stderr] warning: variable does not need to be mutable
Dec 18 11:04:32.368 INFO [stderr]    --> src/serde_serialization/mod.rs:310:36
Dec 18 11:04:32.368 INFO [stderr]     |
Dec 18 11:04:32.368 INFO [stderr] 310 |     fn deserialize_tuple_struct<V>(mut self,
Dec 18 11:04:32.368 INFO [stderr]     |                                    ----^^^^
Dec 18 11:04:32.368 INFO [stderr]     |                                    |
Dec 18 11:04:32.368 INFO [stderr]     |                                    help: remove this `mut`
Dec 18 11:04:32.368 INFO [stderr] 
Dec 18 11:04:32.373 INFO [stderr] warning: variable does not need to be mutable
Dec 18 11:04:32.373 INFO [stderr]    --> src/serde_serialization/mod.rs:357:30
Dec 18 11:04:32.373 INFO [stderr]     |
Dec 18 11:04:32.373 INFO [stderr] 357 |     fn deserialize_struct<V>(mut self,
Dec 18 11:04:32.373 INFO [stderr]     |                              ----^^^^
Dec 18 11:04:32.373 INFO [stderr]     |                              |
Dec 18 11:04:32.373 INFO [stderr]     |                              help: remove this `mut`
Dec 18 11:04:32.373 INFO [stderr] 
Dec 18 11:04:32.934 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.37s
Dec 18 11:04:33.489 INFO running `"docker" "inspect" "338bdc128630d5e13a27fae835a36273bfcd474b7697a861d81714f060da167b"`
Dec 18 11:04:33.614 INFO running `"docker" "rm" "-f" "338bdc128630d5e13a27fae835a36273bfcd474b7697a861d81714f060da167b"`
Dec 18 11:04:33.760 INFO [stdout] 338bdc128630d5e13a27fae835a36273bfcd474b7697a861d81714f060da167b