Dec 18 11:04:27.168 INFO checking snoot-0.1.2 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 11:04:27.169 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-5/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 11:04:27.502 INFO [stdout] fcd0057f8efa3132b9b79e57578df6ba2de7c15630093322a9666cd943e7112d
Dec 18 11:04:27.503 INFO running `"docker" "start" "-a" "fcd0057f8efa3132b9b79e57578df6ba2de7c15630093322a9666cd943e7112d"`
Dec 18 11:04:28.568 INFO [stderr]     Checking snoot v0.1.2 (/opt/crater/workdir)
Dec 18 11:04:30.072 INFO [stderr] warning: variable does not need to be mutable
Dec 18 11:04:30.072 INFO [stderr]    --> src/serde_serialization/mod.rs:300:29
Dec 18 11:04:30.072 INFO [stderr]     |
Dec 18 11:04:30.072 INFO [stderr] 300 |     fn deserialize_tuple<V>(mut self, len: usize, visitor: V) -> Result<V::Value, Self::Error>
Dec 18 11:04:30.072 INFO [stderr]     |                             ----^^^^
Dec 18 11:04:30.072 INFO [stderr]     |                             |
Dec 18 11:04:30.072 INFO [stderr]     |                             help: remove this `mut`
Dec 18 11:04:30.072 INFO [stderr]     |
Dec 18 11:04:30.072 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 18 11:04:30.072 INFO [stderr] 
Dec 18 11:04:30.072 INFO [stderr] warning: variable does not need to be mutable
Dec 18 11:04:30.072 INFO [stderr]    --> src/serde_serialization/mod.rs:310:36
Dec 18 11:04:30.072 INFO [stderr]     |
Dec 18 11:04:30.072 INFO [stderr] 310 |     fn deserialize_tuple_struct<V>(mut self,
Dec 18 11:04:30.072 INFO [stderr]     |                                    ----^^^^
Dec 18 11:04:30.072 INFO [stderr]     |                                    |
Dec 18 11:04:30.072 INFO [stderr]     |                                    help: remove this `mut`
Dec 18 11:04:30.073 INFO [stderr] 
Dec 18 11:04:30.084 INFO [stderr] warning: variable does not need to be mutable
Dec 18 11:04:30.084 INFO [stderr]    --> src/serde_serialization/mod.rs:357:30
Dec 18 11:04:30.084 INFO [stderr]     |
Dec 18 11:04:30.084 INFO [stderr] 357 |     fn deserialize_struct<V>(mut self,
Dec 18 11:04:30.084 INFO [stderr]     |                              ----^^^^
Dec 18 11:04:30.084 INFO [stderr]     |                              |
Dec 18 11:04:30.084 INFO [stderr]     |                              help: remove this `mut`
Dec 18 11:04:30.084 INFO [stderr] 
Dec 18 11:04:30.976 INFO [stderr] warning: variable does not need to be mutable
Dec 18 11:04:30.976 INFO [stderr]    --> src/serde_serialization/mod.rs:300:29
Dec 18 11:04:30.976 INFO [stderr]     |
Dec 18 11:04:30.976 INFO [stderr] 300 |     fn deserialize_tuple<V>(mut self, len: usize, visitor: V) -> Result<V::Value, Self::Error>
Dec 18 11:04:30.976 INFO [stderr]     |                             ----^^^^
Dec 18 11:04:30.976 INFO [stderr]     |                             |
Dec 18 11:04:30.976 INFO [stderr]     |                             help: remove this `mut`
Dec 18 11:04:30.976 INFO [stderr]     |
Dec 18 11:04:30.976 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 18 11:04:30.976 INFO [stderr] 
Dec 18 11:04:30.976 INFO [stderr] warning: variable does not need to be mutable
Dec 18 11:04:30.976 INFO [stderr]    --> src/serde_serialization/mod.rs:310:36
Dec 18 11:04:30.976 INFO [stderr]     |
Dec 18 11:04:30.976 INFO [stderr] 310 |     fn deserialize_tuple_struct<V>(mut self,
Dec 18 11:04:30.976 INFO [stderr]     |                                    ----^^^^
Dec 18 11:04:30.976 INFO [stderr]     |                                    |
Dec 18 11:04:30.976 INFO [stderr]     |                                    help: remove this `mut`
Dec 18 11:04:30.976 INFO [stderr] 
Dec 18 11:04:30.984 INFO [stderr] warning: variable does not need to be mutable
Dec 18 11:04:30.984 INFO [stderr]    --> src/serde_serialization/mod.rs:357:30
Dec 18 11:04:30.984 INFO [stderr]     |
Dec 18 11:04:30.984 INFO [stderr] 357 |     fn deserialize_struct<V>(mut self,
Dec 18 11:04:30.984 INFO [stderr]     |                              ----^^^^
Dec 18 11:04:30.984 INFO [stderr]     |                              |
Dec 18 11:04:30.984 INFO [stderr]     |                              help: remove this `mut`
Dec 18 11:04:30.984 INFO [stderr] 
Dec 18 11:04:31.283 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.85s
Dec 18 11:04:32.132 INFO running `"docker" "inspect" "fcd0057f8efa3132b9b79e57578df6ba2de7c15630093322a9666cd943e7112d"`
Dec 18 11:04:32.400 INFO running `"docker" "rm" "-f" "fcd0057f8efa3132b9b79e57578df6ba2de7c15630093322a9666cd943e7112d"`
Dec 18 11:04:32.696 INFO [stdout] fcd0057f8efa3132b9b79e57578df6ba2de7c15630093322a9666cd943e7112d