[INFO] updating cached repository justinbarclay/diff
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/justinbarclay/diff
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/justinbarclay/diff" "work/ex/pr-57321/sources/master#c0bbc3927e28c22edefe6a1353b5ecc95ea9a104/gh/justinbarclay/diff"`
[INFO] [stderr] Cloning into 'work/ex/pr-57321/sources/master#c0bbc3927e28c22edefe6a1353b5ecc95ea9a104/gh/justinbarclay/diff'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/justinbarclay/diff" "work/ex/pr-57321/sources/try#b9139d2caca1db46014a9c302d5c47cfae0d8ae0/gh/justinbarclay/diff"`
[INFO] [stderr] Cloning into 'work/ex/pr-57321/sources/try#b9139d2caca1db46014a9c302d5c47cfae0d8ae0/gh/justinbarclay/diff'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ef49a83b6ba664da27ab849f3f9eef3efdb91dfa
[INFO] sha for GitHub repo justinbarclay/diff: ef49a83b6ba664da27ab849f3f9eef3efdb91dfa
[INFO] validating manifest of justinbarclay/diff on toolchain master#c0bbc3927e28c22edefe6a1353b5ecc95ea9a104
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0bbc3927e28c22edefe6a1353b5ecc95ea9a104-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of justinbarclay/diff on toolchain try#b9139d2caca1db46014a9c302d5c47cfae0d8ae0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b9139d2caca1db46014a9c302d5c47cfae0d8ae0-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing justinbarclay/diff
[INFO] finished frobbing justinbarclay/diff
[INFO] frobbed toml for justinbarclay/diff written to work/ex/pr-57321/sources/master#c0bbc3927e28c22edefe6a1353b5ecc95ea9a104/gh/justinbarclay/diff/Cargo.toml
[INFO] started frobbing justinbarclay/diff
[INFO] finished frobbing justinbarclay/diff
[INFO] frobbed toml for justinbarclay/diff written to work/ex/pr-57321/sources/try#b9139d2caca1db46014a9c302d5c47cfae0d8ae0/gh/justinbarclay/diff/Cargo.toml
[INFO] crate justinbarclay/diff has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0bbc3927e28c22edefe6a1353b5ecc95ea9a104-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b9139d2caca1db46014a9c302d5c47cfae0d8ae0-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking justinbarclay/diff against master#c0bbc3927e28c22edefe6a1353b5ecc95ea9a104 for pr-57321
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57321/worker-5/master#c0bbc3927e28c22edefe6a1353b5ecc95ea9a104:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57321/sources/master#c0bbc3927e28c22edefe6a1353b5ecc95ea9a104/gh/justinbarclay/diff:/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" "+c0bbc3927e28c22edefe6a1353b5ecc95ea9a104-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 7273574a05a1fd110c0056e946534f5cc045ed3939f721957d64ab9cb6888d8a
[INFO] running `"docker" "start" "-a" "7273574a05a1fd110c0056e946534f5cc045ed3939f721957d64ab9cb6888d8a"`
[INFO] [stderr]     Checking rdiff v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `time::now`
[INFO] [stderr]  --> src/diff.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use time::now;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Edit`, `decorate_differences`, `diff_greedy`
[INFO] [stderr]  --> src/main.rs:9:12
[INFO] [stderr]   |
[INFO] [stderr] 9 | use diff::{diff_greedy, Edit, decorate_differences};
[INFO] [stderr]   |            ^^^^^^^^^^^  ^^^^  ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `time::now`
[INFO] [stderr]  --> src/diff.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use time::now;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Edit`, `decorate_differences`, `diff_greedy`
[INFO] [stderr]  --> src/main.rs:9:12
[INFO] [stderr]   |
[INFO] [stderr] 9 | use diff::{diff_greedy, Edit, decorate_differences};
[INFO] [stderr]   |            ^^^^^^^^^^^  ^^^^  ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `algo`
[INFO] [stderr]   --> src/main.rs:56:7
[INFO] [stderr]    |
[INFO] [stderr] 56 |   let algo = matches.value_of("ALGORITHM").unwrap_or("greedy");
[INFO] [stderr]    |       ^^^^ help: consider using `_algo` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `algo`
[INFO] [stderr]   --> src/main.rs:56:7
[INFO] [stderr]    |
[INFO] [stderr] 56 |   let algo = matches.value_of("ALGORITHM").unwrap_or("greedy");
[INFO] [stderr]    |       ^^^^ help: consider using `_algo` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get`
[INFO] [stderr]   --> src/negative_array.rs:52:3
[INFO] [stderr]    |
[INFO] [stderr] 52 |   pub fn get(&self, offset: isize) -> isize {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set`
[INFO] [stderr]   --> src/negative_array.rs:62:3
[INFO] [stderr]    |
[INFO] [stderr] 62 |   pub fn set(&mut self, offset: isize, value: isize) -> &mut NegativeArray {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/negative_array.rs:83:9
[INFO] [stderr]    |
[INFO] [stderr] 83 |     let mut arr = NegativeArray::new(10);
[INFO] [stderr]    |         ----^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.34s
[INFO] running `"docker" "inspect" "7273574a05a1fd110c0056e946534f5cc045ed3939f721957d64ab9cb6888d8a"`
[INFO] running `"docker" "rm" "-f" "7273574a05a1fd110c0056e946534f5cc045ed3939f721957d64ab9cb6888d8a"`
[INFO] [stdout] 7273574a05a1fd110c0056e946534f5cc045ed3939f721957d64ab9cb6888d8a