Dec 18 07:53:32.309 INFO checking ELD/birdsong against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 07:53:32.309 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-6/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/ELD/birdsong:/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 07:53:32.973 INFO [stdout] 41378166540e90eb559b320f5548308890f8a2209a20421673972cec7c8fc852
Dec 18 07:53:32.975 INFO running `"docker" "start" "-a" "41378166540e90eb559b320f5548308890f8a2209a20421673972cec7c8fc852"`
Dec 18 07:53:34.992 INFO [stderr]     Checking birdsong v0.1.0 (/opt/crater/workdir)
Dec 18 07:53:35.312 INFO [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
Dec 18 07:53:35.312 INFO [stderr]   --> src/main.rs:24:114
Dec 18 07:53:35.312 INFO [stderr]    |
Dec 18 07:53:35.312 INFO [stderr] 24 |         let tweet = format!("{tweet} {counter}", tweet = source_chars[0..break_index].iter().collect::<String>().trim_right(), counter = format!("({}/2)", iteration));
Dec 18 07:53:35.313 INFO [stderr]    |                                                                                                                  ^^^^^^^^^^
Dec 18 07:53:35.313 INFO [stderr]    |
Dec 18 07:53:35.313 INFO [stderr]    = note: #[warn(deprecated)] on by default
Dec 18 07:53:35.313 INFO [stderr] 
Dec 18 07:53:35.340 INFO [stderr] warning: function is never used: `break_up_tweet`
Dec 18 07:53:35.340 INFO [stderr]   --> src/main.rs:11:1
Dec 18 07:53:35.340 INFO [stderr]    |
Dec 18 07:53:35.340 INFO [stderr] 11 | fn break_up_tweet(source_text: String) -> Vec<String> {
Dec 18 07:53:35.340 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 07:53:35.340 INFO [stderr]    |
Dec 18 07:53:35.340 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 07:53:35.340 INFO [stderr] 
Dec 18 07:53:35.340 INFO [stderr] warning: function is never used: `estimate_num_tweets`
Dec 18 07:53:35.340 INFO [stderr]   --> src/main.rs:34:1
Dec 18 07:53:35.340 INFO [stderr]    |
Dec 18 07:53:35.340 INFO [stderr] 34 | fn estimate_num_tweets(tweet: &str) -> u32 {
Dec 18 07:53:35.340 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 07:53:35.340 INFO [stderr] 
Dec 18 07:53:35.428 INFO [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
Dec 18 07:53:35.428 INFO [stderr]   --> src/main.rs:24:114
Dec 18 07:53:35.428 INFO [stderr]    |
Dec 18 07:53:35.428 INFO [stderr] 24 |         let tweet = format!("{tweet} {counter}", tweet = source_chars[0..break_index].iter().collect::<String>().trim_right(), counter = format!("({}/2)", iteration));
Dec 18 07:53:35.428 INFO [stderr]    |                                                                                                                  ^^^^^^^^^^
Dec 18 07:53:35.428 INFO [stderr]    |
Dec 18 07:53:35.428 INFO [stderr]    = note: #[warn(deprecated)] on by default
Dec 18 07:53:35.428 INFO [stderr] 
Dec 18 07:53:35.540 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.56s
Dec 18 07:53:36.264 INFO running `"docker" "inspect" "41378166540e90eb559b320f5548308890f8a2209a20421673972cec7c8fc852"`
Dec 18 07:53:36.678 INFO running `"docker" "rm" "-f" "41378166540e90eb559b320f5548308890f8a2209a20421673972cec7c8fc852"`
Dec 18 07:53:37.012 INFO [stdout] 41378166540e90eb559b320f5548308890f8a2209a20421673972cec7c8fc852