Dec 19 21:43:18.733 INFO checking TechnoCrunch/huffman-rs against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 21:43:18.733 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-5/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/TechnoCrunch/huffman-rs:/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 21:43:19.200 INFO [stdout] 38b305c5176e79b10541d5e7d1acdf3ec2415cee2c1d884e1adf12b7f70dff05
Dec 19 21:43:19.208 INFO running `"docker" "start" "-a" "38b305c5176e79b10541d5e7d1acdf3ec2415cee2c1d884e1adf12b7f70dff05"`
Dec 19 21:43:21.252 INFO [stderr]     Checking huffman v0.1.0 (/opt/crater/workdir)
Dec 19 21:43:21.608 INFO [stderr] warning: unnecessary parentheses around function argument
Dec 19 21:43:21.608 INFO [stderr]   --> src/main.rs:65:43
Dec 19 21:43:21.608 INFO [stderr]    |
Dec 19 21:43:21.608 INFO [stderr] 65 |             generate_code(l, huffman_map, (s.clone() + "0"));
Dec 19 21:43:21.608 INFO [stderr]    |                                           ^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 19 21:43:21.608 INFO [stderr]    |
Dec 19 21:43:21.608 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 19 21:43:21.608 INFO [stderr] 
Dec 19 21:43:21.608 INFO [stderr] warning: unnecessary parentheses around function argument
Dec 19 21:43:21.608 INFO [stderr]   --> src/main.rs:68:43
Dec 19 21:43:21.608 INFO [stderr]    |
Dec 19 21:43:21.608 INFO [stderr] 68 |             generate_code(r, huffman_map, (s.clone() + "1"));
Dec 19 21:43:21.608 INFO [stderr]    |                                           ^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 19 21:43:21.608 INFO [stderr] 
Dec 19 21:43:21.636 INFO [stderr] warning: unnecessary parentheses around function argument
Dec 19 21:43:21.636 INFO [stderr]   --> src/main.rs:65:43
Dec 19 21:43:21.636 INFO [stderr]    |
Dec 19 21:43:21.636 INFO [stderr] 65 |             generate_code(l, huffman_map, (s.clone() + "0"));
Dec 19 21:43:21.637 INFO [stderr]    |                                           ^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 19 21:43:21.637 INFO [stderr]    |
Dec 19 21:43:21.637 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 19 21:43:21.637 INFO [stderr] 
Dec 19 21:43:21.644 INFO [stderr] warning: unnecessary parentheses around function argument
Dec 19 21:43:21.644 INFO [stderr]   --> src/main.rs:68:43
Dec 19 21:43:21.644 INFO [stderr]    |
Dec 19 21:43:21.644 INFO [stderr] 68 |             generate_code(r, huffman_map, (s.clone() + "1"));
Dec 19 21:43:21.644 INFO [stderr]    |                                           ^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 19 21:43:21.644 INFO [stderr] 
Dec 19 21:43:21.832 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.65s
Dec 19 21:43:22.182 INFO running `"docker" "inspect" "38b305c5176e79b10541d5e7d1acdf3ec2415cee2c1d884e1adf12b7f70dff05"`
Dec 19 21:43:22.334 INFO running `"docker" "rm" "-f" "38b305c5176e79b10541d5e7d1acdf3ec2415cee2c1d884e1adf12b7f70dff05"`
Dec 19 21:43:22.550 INFO [stdout] 38b305c5176e79b10541d5e7d1acdf3ec2415cee2c1d884e1adf12b7f70dff05