[INFO] updating cached repository sabartheman/Rust_huffman_parallel
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/sabartheman/Rust_huffman_parallel
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/sabartheman/Rust_huffman_parallel" "work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/sabartheman/Rust_huffman_parallel"`
[INFO] [stderr] Cloning into 'work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/sabartheman/Rust_huffman_parallel'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/sabartheman/Rust_huffman_parallel" "work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/sabartheman/Rust_huffman_parallel"`
[INFO] [stderr] Cloning into 'work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/sabartheman/Rust_huffman_parallel'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9856ae702e29f7289fba9dfd14c861fcacf1362d
[INFO] sha for GitHub repo sabartheman/Rust_huffman_parallel: 9856ae702e29f7289fba9dfd14c861fcacf1362d
[INFO] validating manifest of sabartheman/Rust_huffman_parallel on toolchain master#a850a426491e14186af2250549bf41256b5938d2
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of sabartheman/Rust_huffman_parallel on toolchain try#06a150c7d11500b41499224f165e9de1de096768
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing sabartheman/Rust_huffman_parallel
[INFO] finished frobbing sabartheman/Rust_huffman_parallel
[INFO] frobbed toml for sabartheman/Rust_huffman_parallel written to work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/sabartheman/Rust_huffman_parallel/Cargo.toml
[INFO] started frobbing sabartheman/Rust_huffman_parallel
[INFO] finished frobbing sabartheman/Rust_huffman_parallel
[INFO] frobbed toml for sabartheman/Rust_huffman_parallel written to work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/sabartheman/Rust_huffman_parallel/Cargo.toml
[INFO] crate sabartheman/Rust_huffman_parallel already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking sabartheman/Rust_huffman_parallel against master#a850a426491e14186af2250549bf41256b5938d2 for pr-60162
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60162/worker-2/master#a850a426491e14186af2250549bf41256b5938d2:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/sabartheman/Rust_huffman_parallel:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+a850a426491e14186af2250549bf41256b5938d2-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 8b49fdee14e6b98f1cd77988fe9ba93197a4c05280ffe0449dd75f4db40c1c51
[INFO] running `"docker" "start" "-a" "8b49fdee14e6b98f1cd77988fe9ba93197a4c05280ffe0449dd75f4db40c1c51"`
[INFO] [stderr]     Checking crossbeam v0.3.0
[INFO] [stderr]     Checking huffman_rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/main.rs:103:32
[INFO] [stderr]     |
[INFO] [stderr] 103 |             assign_codes(l, h, (s.clone() + "0"));
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/main.rs:106:32
[INFO] [stderr]     |
[INFO] [stderr] 106 |             assign_codes(r, h, (s.clone() + "1"));
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/main.rs:103:32
[INFO] [stderr]     |
[INFO] [stderr] 103 |             assign_codes(l, h, (s.clone() + "0"));
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/main.rs:106:32
[INFO] [stderr]     |
[INFO] [stderr] 106 |             assign_codes(r, h, (s.clone() + "1"));
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]    --> src/main.rs:499:16
[INFO] [stderr]     |
[INFO] [stderr] 499 |     if let Err(e) = writeln!(file, "{},{},{},{},{},{},{},", tp1_finish - tp1_start, tp2_finish - tp2_start, tp3_finish - tp3_start, tp4_finish - tp4_start, t3-t1, t2-s2, t3-s3) {
[INFO] [stderr]     |                ^ help: consider prefixing with an underscore: `_e`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]    --> src/main.rs:499:16
[INFO] [stderr]     |
[INFO] [stderr] 499 |     if let Err(e) = writeln!(file, "{},{},{},{},{},{},{},", tp1_finish - tp1_start, tp2_finish - tp2_start, tp3_finish - tp3_start, tp4_finish - tp4_start, t3-t1, t2-s2, t3-s3) {
[INFO] [stderr]     |                ^ help: consider prefixing with an underscore: `_e`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.23s
[INFO] running `"docker" "inspect" "8b49fdee14e6b98f1cd77988fe9ba93197a4c05280ffe0449dd75f4db40c1c51"`
[INFO] running `"docker" "rm" "-f" "8b49fdee14e6b98f1cd77988fe9ba93197a4c05280ffe0449dd75f4db40c1c51"`
[INFO] [stdout] 8b49fdee14e6b98f1cd77988fe9ba93197a4c05280ffe0449dd75f4db40c1c51