[INFO] updating cached repository https://github.com/Katkevich/rust_diff
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4d00bfcb995ab4c9ec5e63b0252c4baa3470d278
[INFO] testing Katkevich/rust_diff against master#28742a1146f10a4f09369baad027a464acb7a766 for pr-71274
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKatkevich%2Frust_diff" "/workspace/builds/worker-11/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Katkevich/rust_diff on toolchain 28742a1146f10a4f09369baad027a464acb7a766
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Katkevich/rust_diff
[INFO] finished tweaking git repo https://github.com/Katkevich/rust_diff
[INFO] tweaked toml for git repo https://github.com/Katkevich/rust_diff written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/Katkevich/rust_diff already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /workspace/builds/worker-11/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "build" "--frozen"`
[INFO] [stdout] 10043a8495a8c1803772d818e1cf4848f08369db081ed4a72a2c559568803b02
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "10043a8495a8c1803772d818e1cf4848f08369db081ed4a72a2c559568803b02"`
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling thread-id v2.0.0
[INFO] [stderr]    Compiling thread_local v0.2.7
[INFO] [stderr]    Compiling aho-corasick v0.5.3
[INFO] [stderr]    Compiling regex v0.1.80
[INFO] [stderr]    Compiling rust_diff v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `Lines`
[INFO] [stderr]  --> src/code_line.rs:1:36
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io::{ BufRead, BufReader, Lines };
[INFO] [stderr]   |                                    ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cmp`
[INFO] [stderr]  --> src/code_line.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::cmp;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::borrow::Borrow`
[INFO] [stderr]  --> src/code_line.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::borrow::Borrow;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::*`
[INFO] [stderr]  --> src/code_line.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::ops::*;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `LineDiff`
[INFO] [stderr]  --> src/code_line.rs:7:18
[INFO] [stderr]   |
[INFO] [stderr] 7 | use line_diff::{ LineDiff };
[INFO] [stderr]   |                  ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::*`
[INFO] [stderr]  --> src/diff_engine.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::ops::*;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BufRead`, `BufReader`, `Lines`
[INFO] [stderr]  --> src/lcs.rs:1:16
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io::{ BufRead, BufReader, Lines };
[INFO] [stderr]   |                ^^^^^^^  ^^^^^^^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `File`
[INFO] [stderr]  --> src/lcs.rs:2:16
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::fs::{ File };
[INFO] [stderr]   |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::borrow::Borrow`
[INFO] [stderr]  --> src/lcs.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::borrow::Borrow;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::*`
[INFO] [stderr]  --> src/lcs.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::ops::*;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `LineDiff`
[INFO] [stderr]  --> src/lcs.rs:7:18
[INFO] [stderr]   |
[INFO] [stderr] 7 | use line_diff::{ LineDiff };
[INFO] [stderr]   |                  ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Diff`
[INFO] [stderr]  --> src/lcs.rs:8:18
[INFO] [stderr]   |
[INFO] [stderr] 8 | use diff_type::{ Diff };
[INFO] [stderr]   |                  ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `CodeLine`, `Line`
[INFO] [stderr]  --> src/lcs.rs:9:18
[INFO] [stderr]   |
[INFO] [stderr] 9 | use code_line::{ CodeLine, Line };
[INFO] [stderr]   |                  ^^^^^^^^  ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::*`
[INFO] [stderr]   --> src/main.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::ops::*;
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Changes`, `LCS`
[INFO] [stderr]   --> src/main.rs:16:12
[INFO] [stderr]    |
[INFO] [stderr] 16 | use lcs::{ LCS, Changes };
[INFO] [stderr]    |            ^^^  ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Line`
[INFO] [stderr]   --> src/main.rs:17:28
[INFO] [stderr]    |
[INFO] [stderr] 17 | use code_line::{ CodeLine, Line };
[INFO] [stderr]    |                            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `diff_type::Diff`
[INFO] [stderr]   --> src/main.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 | use diff_type::Diff;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::iter`
[INFO] [stderr]  --> src/lcs.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::iter::*;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `special_symbols_iter`
[INFO] [stderr]   --> src/code_line.rs:57:13
[INFO] [stderr]    |
[INFO] [stderr] 57 |         let special_symbols_iter = special_symbol_regex.find_iter(self.code.as_ref());
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_special_symbols_iter`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `line_last_idx`
[INFO] [stderr]   --> src/code_line.rs:60:13
[INFO] [stderr]    |
[INFO] [stderr] 60 |         let line_last_idx = self.code.len();
[INFO] [stderr]    |             ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_line_last_idx`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lcs_distance`
[INFO] [stderr]   --> src/diff_engine.rs:43:23
[INFO] [stderr]    |
[INFO] [stderr] 43 |         let (lcs_inv, lcs_distance) = LCS::get_lcs_inverted(&self.source_lines, &self.target_lines);
[INFO] [stderr]    |                       ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_lcs_distance`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `source_len`
[INFO] [stderr]    --> src/lcs.rs:104:104
[INFO] [stderr]     |
[INFO] [stderr] 104 |     fn select_lcs_inverted(matrix: &Vec<Vec<i32>>, start: usize, source_end: usize, target_end: usize, source_len: usize, target_len: usize) -> Vec<Changes> {
[INFO] [stderr]     |                                                                                                        ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_source_len`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `target_len`
[INFO] [stderr]    --> src/lcs.rs:104:123
[INFO] [stderr]     |
[INFO] [stderr] 104 |     fn select_lcs_inverted(matrix: &Vec<Vec<i32>>, start: usize, source_end: usize, target_end: usize, source_len: usize, target_len: usize) -> Vec<Changes> {
[INFO] [stderr]     |                                                                                                                           ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_target_len`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `intervals`
[INFO] [stderr]  --> src/line_diff.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 |     intervals: Vec<(i32, i32)>
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]  --> src/line_diff.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     pub fn new() -> LineDiff {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Changed`
[INFO] [stderr]  --> src/diff_type.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Changed(LineDiff),
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 26 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.24s
[INFO] running `"docker" "inspect" "10043a8495a8c1803772d818e1cf4848f08369db081ed4a72a2c559568803b02"`
[INFO] running `"docker" "rm" "-f" "10043a8495a8c1803772d818e1cf4848f08369db081ed4a72a2c559568803b02"`
[INFO] [stdout] 10043a8495a8c1803772d818e1cf4848f08369db081ed4a72a2c559568803b02
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e320254983cb0bb50e5a4aba15373d103c6200c5921bcc351c964fc73638e920
[INFO] running `"docker" "start" "-a" "e320254983cb0bb50e5a4aba15373d103c6200c5921bcc351c964fc73638e920"`
[INFO] [stderr]    Compiling rust_diff v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `Lines`
[INFO] [stderr]  --> src/code_line.rs:1:36
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io::{ BufRead, BufReader, Lines };
[INFO] [stderr]   |                                    ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cmp`
[INFO] [stderr]  --> src/code_line.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::cmp;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::borrow::Borrow`
[INFO] [stderr]  --> src/code_line.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::borrow::Borrow;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::*`
[INFO] [stderr]  --> src/code_line.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::ops::*;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `LineDiff`
[INFO] [stderr]  --> src/code_line.rs:7:18
[INFO] [stderr]   |
[INFO] [stderr] 7 | use line_diff::{ LineDiff };
[INFO] [stderr]   |                  ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::*`
[INFO] [stderr]  --> src/diff_engine.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::ops::*;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BufRead`, `BufReader`, `Lines`
[INFO] [stderr]  --> src/lcs.rs:1:16
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io::{ BufRead, BufReader, Lines };
[INFO] [stderr]   |                ^^^^^^^  ^^^^^^^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `File`
[INFO] [stderr]  --> src/lcs.rs:2:16
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::fs::{ File };
[INFO] [stderr]   |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::borrow::Borrow`
[INFO] [stderr]  --> src/lcs.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::borrow::Borrow;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::*`
[INFO] [stderr]  --> src/lcs.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::ops::*;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `LineDiff`
[INFO] [stderr]  --> src/lcs.rs:7:18
[INFO] [stderr]   |
[INFO] [stderr] 7 | use line_diff::{ LineDiff };
[INFO] [stderr]   |                  ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Diff`
[INFO] [stderr]  --> src/lcs.rs:8:18
[INFO] [stderr]   |
[INFO] [stderr] 8 | use diff_type::{ Diff };
[INFO] [stderr]   |                  ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `CodeLine`, `Line`
[INFO] [stderr]  --> src/lcs.rs:9:18
[INFO] [stderr]   |
[INFO] [stderr] 9 | use code_line::{ CodeLine, Line };
[INFO] [stderr]   |                  ^^^^^^^^  ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::*`
[INFO] [stderr]   --> src/main.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::ops::*;
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Changes`, `LCS`
[INFO] [stderr]   --> src/main.rs:16:12
[INFO] [stderr]    |
[INFO] [stderr] 16 | use lcs::{ LCS, Changes };
[INFO] [stderr]    |            ^^^  ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Line`
[INFO] [stderr]   --> src/main.rs:17:28
[INFO] [stderr]    |
[INFO] [stderr] 17 | use code_line::{ CodeLine, Line };
[INFO] [stderr]    |                            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `diff_type::Diff`
[INFO] [stderr]   --> src/main.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 | use diff_type::Diff;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::iter`
[INFO] [stderr]  --> src/lcs.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::iter::*;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `special_symbols_iter`
[INFO] [stderr]   --> src/code_line.rs:57:13
[INFO] [stderr]    |
[INFO] [stderr] 57 |         let special_symbols_iter = special_symbol_regex.find_iter(self.code.as_ref());
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_special_symbols_iter`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `line_last_idx`
[INFO] [stderr]   --> src/code_line.rs:60:13
[INFO] [stderr]    |
[INFO] [stderr] 60 |         let line_last_idx = self.code.len();
[INFO] [stderr]    |             ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_line_last_idx`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lcs_distance`
[INFO] [stderr]   --> src/diff_engine.rs:43:23
[INFO] [stderr]    |
[INFO] [stderr] 43 |         let (lcs_inv, lcs_distance) = LCS::get_lcs_inverted(&self.source_lines, &self.target_lines);
[INFO] [stderr]    |                       ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_lcs_distance`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `source_len`
[INFO] [stderr]    --> src/lcs.rs:104:104
[INFO] [stderr]     |
[INFO] [stderr] 104 |     fn select_lcs_inverted(matrix: &Vec<Vec<i32>>, start: usize, source_end: usize, target_end: usize, source_len: usize, target_len: usize) -> Vec<Changes> {
[INFO] [stderr]     |                                                                                                        ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_source_len`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `target_len`
[INFO] [stderr]    --> src/lcs.rs:104:123
[INFO] [stderr]     |
[INFO] [stderr] 104 |     fn select_lcs_inverted(matrix: &Vec<Vec<i32>>, start: usize, source_end: usize, target_end: usize, source_len: usize, target_len: usize) -> Vec<Changes> {
[INFO] [stderr]     |                                                                                                                           ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_target_len`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `intervals`
[INFO] [stderr]  --> src/line_diff.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 |     intervals: Vec<(i32, i32)>
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]  --> src/line_diff.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     pub fn new() -> LineDiff {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Changed`
[INFO] [stderr]  --> src/diff_type.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Changed(LineDiff),
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 26 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.96s
[INFO] running `"docker" "inspect" "e320254983cb0bb50e5a4aba15373d103c6200c5921bcc351c964fc73638e920"`
[INFO] running `"docker" "rm" "-f" "e320254983cb0bb50e5a4aba15373d103c6200c5921bcc351c964fc73638e920"`
[INFO] [stdout] e320254983cb0bb50e5a4aba15373d103c6200c5921bcc351c964fc73638e920
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ef39189c1830f63559178db6a8a971a7bd453430edd5705ed57439d574f36b3f
[INFO] running `"docker" "start" "-a" "ef39189c1830f63559178db6a8a971a7bd453430edd5705ed57439d574f36b3f"`
[INFO] [stderr] warning: unused import: `Lines`
[INFO] [stderr]  --> src/code_line.rs:1:36
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io::{ BufRead, BufReader, Lines };
[INFO] [stderr]   |                                    ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cmp`
[INFO] [stderr]  --> src/code_line.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::cmp;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::borrow::Borrow`
[INFO] [stderr]  --> src/code_line.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::borrow::Borrow;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::*`
[INFO] [stderr]  --> src/code_line.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::ops::*;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `LineDiff`
[INFO] [stderr]  --> src/code_line.rs:7:18
[INFO] [stderr]   |
[INFO] [stderr] 7 | use line_diff::{ LineDiff };
[INFO] [stderr]   |                  ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::*`
[INFO] [stderr]  --> src/diff_engine.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::ops::*;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BufRead`, `BufReader`, `Lines`
[INFO] [stderr]  --> src/lcs.rs:1:16
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io::{ BufRead, BufReader, Lines };
[INFO] [stderr]   |                ^^^^^^^  ^^^^^^^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `File`
[INFO] [stderr]  --> src/lcs.rs:2:16
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::fs::{ File };
[INFO] [stderr]   |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::borrow::Borrow`
[INFO] [stderr]  --> src/lcs.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::borrow::Borrow;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::*`
[INFO] [stderr]  --> src/lcs.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::ops::*;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `LineDiff`
[INFO] [stderr]  --> src/lcs.rs:7:18
[INFO] [stderr]   |
[INFO] [stderr] 7 | use line_diff::{ LineDiff };
[INFO] [stderr]   |                  ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Diff`
[INFO] [stderr]  --> src/lcs.rs:8:18
[INFO] [stderr]   |
[INFO] [stderr] 8 | use diff_type::{ Diff };
[INFO] [stderr]   |                  ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `CodeLine`, `Line`
[INFO] [stderr]  --> src/lcs.rs:9:18
[INFO] [stderr]   |
[INFO] [stderr] 9 | use code_line::{ CodeLine, Line };
[INFO] [stderr]   |                  ^^^^^^^^  ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::*`
[INFO] [stderr]   --> src/main.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::ops::*;
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Changes`, `LCS`
[INFO] [stderr]   --> src/main.rs:16:12
[INFO] [stderr]    |
[INFO] [stderr] 16 | use lcs::{ LCS, Changes };
[INFO] [stderr]    |            ^^^  ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Line`
[INFO] [stderr]   --> src/main.rs:17:28
[INFO] [stderr]    |
[INFO] [stderr] 17 | use code_line::{ CodeLine, Line };
[INFO] [stderr]    |                            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `diff_type::Diff`
[INFO] [stderr]   --> src/main.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 | use diff_type::Diff;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::iter`
[INFO] [stderr]  --> src/lcs.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::iter::*;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `special_symbols_iter`
[INFO] [stderr]   --> src/code_line.rs:57:13
[INFO] [stderr]    |
[INFO] [stderr] 57 |         let special_symbols_iter = special_symbol_regex.find_iter(self.code.as_ref());
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_special_symbols_iter`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `line_last_idx`
[INFO] [stderr]   --> src/code_line.rs:60:13
[INFO] [stderr]    |
[INFO] [stderr] 60 |         let line_last_idx = self.code.len();
[INFO] [stderr]    |             ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_line_last_idx`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lcs_distance`
[INFO] [stderr]   --> src/diff_engine.rs:43:23
[INFO] [stderr]    |
[INFO] [stderr] 43 |         let (lcs_inv, lcs_distance) = LCS::get_lcs_inverted(&self.source_lines, &self.target_lines);
[INFO] [stderr]    |                       ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_lcs_distance`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `source_len`
[INFO] [stderr]    --> src/lcs.rs:104:104
[INFO] [stderr]     |
[INFO] [stderr] 104 |     fn select_lcs_inverted(matrix: &Vec<Vec<i32>>, start: usize, source_end: usize, target_end: usize, source_len: usize, target_len: usize) -> Vec<Changes> {
[INFO] [stderr]     |                                                                                                        ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_source_len`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `target_len`
[INFO] [stderr]    --> src/lcs.rs:104:123
[INFO] [stderr]     |
[INFO] [stderr] 104 |     fn select_lcs_inverted(matrix: &Vec<Vec<i32>>, start: usize, source_end: usize, target_end: usize, source_len: usize, target_len: usize) -> Vec<Changes> {
[INFO] [stderr]     |                                                                                                                           ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_target_len`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `intervals`
[INFO] [stderr]  --> src/line_diff.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 |     intervals: Vec<(i32, i32)>
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]  --> src/line_diff.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     pub fn new() -> LineDiff {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Changed`
[INFO] [stderr]  --> src/diff_type.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Changed(LineDiff),
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 26 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.15s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rust_diff-452858d3cdc9a5a5
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "ef39189c1830f63559178db6a8a971a7bd453430edd5705ed57439d574f36b3f"`
[INFO] running `"docker" "rm" "-f" "ef39189c1830f63559178db6a8a971a7bd453430edd5705ed57439d574f36b3f"`
[INFO] [stdout] ef39189c1830f63559178db6a8a971a7bd453430edd5705ed57439d574f36b3f