Dec 18 11:24:11.077 INFO checking serde-xml-rs-0.2.1 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 11:24:11.077 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-4/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/reg/serde-xml-rs/0.2.1:/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 11:24:11.537 INFO [stdout] e81538adc431eb179f81332b7a4173da1002c4786b9dacf8abacb81b8710dc35
Dec 18 11:24:11.539 INFO running `"docker" "start" "-a" "e81538adc431eb179f81332b7a4173da1002c4786b9dacf8abacb81b8710dc35"`
Dec 18 11:24:12.796 INFO [stderr]     Checking serde-xml-rs v0.2.1 (/opt/crater/workdir)
Dec 18 11:24:13.425 INFO [stderr] warning: variable does not need to be mutable
Dec 18 11:24:13.425 INFO [stderr]   --> src/serialize.rs:89:23
Dec 18 11:24:13.425 INFO [stderr]    |
Dec 18 11:24:13.425 INFO [stderr] 89 |     fn serialize_bool(mut self, v: bool) -> Result<Self::Ok, Self::Error> {
Dec 18 11:24:13.425 INFO [stderr]    |                       ----^^^^
Dec 18 11:24:13.425 INFO [stderr]    |                       |
Dec 18 11:24:13.425 INFO [stderr]    |                       help: remove this `mut`
Dec 18 11:24:13.425 INFO [stderr]    |
Dec 18 11:24:13.425 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 11:24:13.425 INFO [stderr] 
Dec 18 11:24:13.704 INFO [stderr] warning: variable does not need to be mutable
Dec 18 11:24:13.704 INFO [stderr]   --> src/serialize.rs:89:23
Dec 18 11:24:13.704 INFO [stderr]    |
Dec 18 11:24:13.704 INFO [stderr] 89 |     fn serialize_bool(mut self, v: bool) -> Result<Self::Ok, Self::Error> {
Dec 18 11:24:13.704 INFO [stderr]    |                       ----^^^^
Dec 18 11:24:13.704 INFO [stderr]    |                       |
Dec 18 11:24:13.704 INFO [stderr]    |                       help: remove this `mut`
Dec 18 11:24:13.704 INFO [stderr]    |
Dec 18 11:24:13.704 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 11:24:13.704 INFO [stderr] 
Dec 18 11:24:15.902 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.14s
Dec 18 11:24:16.490 INFO running `"docker" "inspect" "e81538adc431eb179f81332b7a4173da1002c4786b9dacf8abacb81b8710dc35"`
Dec 18 11:24:16.742 INFO running `"docker" "rm" "-f" "e81538adc431eb179f81332b7a4173da1002c4786b9dacf8abacb81b8710dc35"`
Dec 18 11:24:16.956 INFO [stdout] e81538adc431eb179f81332b7a4173da1002c4786b9dacf8abacb81b8710dc35