Dec 12 07:18:50.777 INFO checking snoot-0.1.2 against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 07:18:50.777 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-5/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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 12 07:18:51.234 INFO [stdout] be8e4067361b5c8c7fce1a164a1f6cf90a4fa63b5f73143c0b838a13161e4786
Dec 12 07:18:51.236 INFO running `"docker" "start" "-a" "be8e4067361b5c8c7fce1a164a1f6cf90a4fa63b5f73143c0b838a13161e4786"`
Dec 12 07:18:52.400 INFO [stderr] usermod: no changes
Dec 12 07:18:52.544 INFO [stderr]     Checking utf-8 v0.6.0
Dec 12 07:18:53.080 INFO [stderr]     Checking tendril v0.2.4
Dec 12 07:18:54.647 INFO [stderr]     Checking snoot v0.1.2 (/source)
Dec 12 07:18:58.640 INFO [stderr] warning: variable does not need to be mutable
Dec 12 07:18:58.640 INFO [stderr]    --> src/serde_serialization/mod.rs:300:29
Dec 12 07:18:58.640 INFO [stderr]     |
Dec 12 07:18:58.640 INFO [stderr] 300 |     fn deserialize_tuple<V>(mut self, len: usize, visitor: V) -> Result<V::Value, Self::Error>
Dec 12 07:18:58.640 INFO [stderr]     |                             ----^^^^
Dec 12 07:18:58.640 INFO [stderr]     |                             |
Dec 12 07:18:58.640 INFO [stderr]     |                             help: remove this `mut`
Dec 12 07:18:58.640 INFO [stderr]     |
Dec 12 07:18:58.640 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 12 07:18:58.640 INFO [stderr] 
Dec 12 07:18:58.652 INFO [stderr] warning: variable does not need to be mutable
Dec 12 07:18:58.652 INFO [stderr]    --> src/serde_serialization/mod.rs:310:36
Dec 12 07:18:58.652 INFO [stderr]     |
Dec 12 07:18:58.652 INFO [stderr] 310 |     fn deserialize_tuple_struct<V>(mut self,
Dec 12 07:18:58.652 INFO [stderr]     |                                    ----^^^^
Dec 12 07:18:58.652 INFO [stderr]     |                                    |
Dec 12 07:18:58.652 INFO [stderr]     |                                    help: remove this `mut`
Dec 12 07:18:58.652 INFO [stderr] 
Dec 12 07:18:58.656 INFO [stderr] warning: variable does not need to be mutable
Dec 12 07:18:58.656 INFO [stderr]    --> src/serde_serialization/mod.rs:357:30
Dec 12 07:18:58.656 INFO [stderr]     |
Dec 12 07:18:58.656 INFO [stderr] 357 |     fn deserialize_struct<V>(mut self,
Dec 12 07:18:58.656 INFO [stderr]     |                              ----^^^^
Dec 12 07:18:58.656 INFO [stderr]     |                              |
Dec 12 07:18:58.656 INFO [stderr]     |                              help: remove this `mut`
Dec 12 07:18:58.656 INFO [stderr] 
Dec 12 07:18:59.544 INFO [stderr] warning: variable does not need to be mutable
Dec 12 07:18:59.544 INFO [stderr]    --> src/serde_serialization/mod.rs:300:29
Dec 12 07:18:59.544 INFO [stderr]     |
Dec 12 07:18:59.544 INFO [stderr] 300 |     fn deserialize_tuple<V>(mut self, len: usize, visitor: V) -> Result<V::Value, Self::Error>
Dec 12 07:18:59.544 INFO [stderr]     |                             ----^^^^
Dec 12 07:18:59.544 INFO [stderr]     |                             |
Dec 12 07:18:59.544 INFO [stderr]     |                             help: remove this `mut`
Dec 12 07:18:59.544 INFO [stderr]     |
Dec 12 07:18:59.544 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 12 07:18:59.544 INFO [stderr] 
Dec 12 07:18:59.606 INFO [stderr] warning: variable does not need to be mutable
Dec 12 07:18:59.606 INFO [stderr]    --> src/serde_serialization/mod.rs:310:36
Dec 12 07:18:59.606 INFO [stderr]     |
Dec 12 07:18:59.606 INFO [stderr] 310 |     fn deserialize_tuple_struct<V>(mut self,
Dec 12 07:18:59.606 INFO [stderr]     |                                    ----^^^^
Dec 12 07:18:59.606 INFO [stderr]     |                                    |
Dec 12 07:18:59.606 INFO [stderr]     |                                    help: remove this `mut`
Dec 12 07:18:59.606 INFO [stderr] 
Dec 12 07:18:59.606 INFO [stderr] warning: variable does not need to be mutable
Dec 12 07:18:59.606 INFO [stderr]    --> src/serde_serialization/mod.rs:357:30
Dec 12 07:18:59.606 INFO [stderr]     |
Dec 12 07:18:59.606 INFO [stderr] 357 |     fn deserialize_struct<V>(mut self,
Dec 12 07:18:59.606 INFO [stderr]     |                              ----^^^^
Dec 12 07:18:59.606 INFO [stderr]     |                              |
Dec 12 07:18:59.606 INFO [stderr]     |                              help: remove this `mut`
Dec 12 07:18:59.606 INFO [stderr] 
Dec 12 07:19:02.596 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.18s
Dec 12 07:19:02.607 INFO [stderr] su: No module specific data is present
Dec 12 07:19:03.238 INFO running `"docker" "inspect" "be8e4067361b5c8c7fce1a164a1f6cf90a4fa63b5f73143c0b838a13161e4786"`
Dec 12 07:19:03.544 INFO running `"docker" "rm" "-f" "be8e4067361b5c8c7fce1a164a1f6cf90a4fa63b5f73143c0b838a13161e4786"`
Dec 12 07:19:03.840 INFO [stdout] be8e4067361b5c8c7fce1a164a1f6cf90a4fa63b5f73143c0b838a13161e4786