[INFO] fetching crate rs_algo 0.2.1...
[INFO] testing rs_algo-0.2.1 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate rs_algo 0.2.1 into /workspace/builds/worker-21/source
[INFO] validating manifest of crates.io crate rs_algo 0.2.1 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rs_algo 0.2.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate rs_algo 0.2.1
[INFO] tweaked toml for crates.io crate rs_algo 0.2.1 written to /workspace/builds/worker-21/source/Cargo.toml
[INFO] crate crates.io crate rs_algo 0.2.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4b1e2eee6c6ceb6c4f1a6545cc1740fe0b5554a8cd67f82331547cc63343ef04
[INFO] running `Command { std: "docker" "start" "-a" "4b1e2eee6c6ceb6c4f1a6545cc1740fe0b5554a8cd67f82331547cc63343ef04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4b1e2eee6c6ceb6c4f1a6545cc1740fe0b5554a8cd67f82331547cc63343ef04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b1e2eee6c6ceb6c4f1a6545cc1740fe0b5554a8cd67f82331547cc63343ef04", kill_on_drop: false }`
[INFO] [stdout] 4b1e2eee6c6ceb6c4f1a6545cc1740fe0b5554a8cd67f82331547cc63343ef04
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d353a5c362057289f6c76137436af646c039e16650e15e42564a9102e5f835e3
[INFO] running `Command { std: "docker" "start" "-a" "d353a5c362057289f6c76137436af646c039e16650e15e42564a9102e5f835e3", kill_on_drop: false }`
[INFO] [stderr]    Compiling rs_algo v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `right_str`
[INFO] [stdout]   --> src/compare/substring.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     right_str: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `LCSubstring` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/compare/substring.rs:15:10
[INFO] [stdout]    |
[INFO] [stdout] 15 | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.66s
[INFO] running `Command { std: "docker" "inspect" "d353a5c362057289f6c76137436af646c039e16650e15e42564a9102e5f835e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d353a5c362057289f6c76137436af646c039e16650e15e42564a9102e5f835e3", kill_on_drop: false }`
[INFO] [stdout] d353a5c362057289f6c76137436af646c039e16650e15e42564a9102e5f835e3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 62a80db7c9cd9b73b1272c1ebb92d104d967047715d09ee66d02c11c60f2a237
[INFO] running `Command { std: "docker" "start" "-a" "62a80db7c9cd9b73b1272c1ebb92d104d967047715d09ee66d02c11c60f2a237", kill_on_drop: false }`
[INFO] [stderr]    Compiling rs_algo v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `right_str`
[INFO] [stdout]   --> src/compare/substring.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     right_str: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `LCSubstring` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/compare/substring.rs:15:10
[INFO] [stdout]    |
[INFO] [stdout] 15 | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sorted_bubble`
[INFO] [stdout]   --> examples/algo.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let sorted_bubble = bubble::sort(&a);
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sorted_bubble`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sorted_insertion`
[INFO] [stdout]   --> examples/algo.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let sorted_insertion = insertion::sort(&b);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sorted_insertion`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sorted_merge`
[INFO] [stdout]   --> examples/algo.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let sorted_merge = merge::sort(&c);
[INFO] [stdout]    |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sorted_merge`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sorted_quick`
[INFO] [stdout]   --> examples/algo.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let sorted_quick = quick::sort(&d);
[INFO] [stdout]    |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sorted_quick`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `right_str`
[INFO] [stdout]   --> src/compare/substring.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     right_str: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `LCSubstring` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/compare/substring.rs:15:10
[INFO] [stdout]    |
[INFO] [stdout] 15 | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.04s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/rs_algo-a12a63efd53c66bf)
[INFO] running `Command { std: "docker" "inspect" "62a80db7c9cd9b73b1272c1ebb92d104d967047715d09ee66d02c11c60f2a237", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62a80db7c9cd9b73b1272c1ebb92d104d967047715d09ee66d02c11c60f2a237", kill_on_drop: false }`
[INFO] [stdout] 62a80db7c9cd9b73b1272c1ebb92d104d967047715d09ee66d02c11c60f2a237
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6a21df7f4371062b40dee01a988f4a85f2858b45b151a053e59bfb08e23b92cd
[INFO] running `Command { std: "docker" "start" "-a" "6a21df7f4371062b40dee01a988f4a85f2858b45b151a053e59bfb08e23b92cd", kill_on_drop: false }`
[INFO] [stderr] warning: field is never read: `right_str`
[INFO] [stderr]   --> src/compare/substring.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     right_str: String,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] note: `LCSubstring` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/compare/substring.rs:15:10
[INFO] [stderr]    |
[INFO] [stderr] 15 | #[derive(Debug)]
[INFO] [stderr]    |          ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: `rs_algo` (lib) generated 1 warning
[INFO] [stderr] warning: `rs_algo` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr] warning: unused variable: `sorted_bubble`
[INFO] [stderr]   --> examples/algo.rs:30:9
[INFO] [stderr]    |
[INFO] [stderr] 30 |     let sorted_bubble = bubble::sort(&a);
[INFO] [stderr]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sorted_bubble`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sorted_insertion`
[INFO] [stderr]   --> examples/algo.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |     let sorted_insertion = insertion::sort(&b);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sorted_insertion`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sorted_merge`
[INFO] [stderr]   --> examples/algo.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |     let sorted_merge = merge::sort(&c);
[INFO] [stderr]    |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sorted_merge`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sorted_quick`
[INFO] [stderr]   --> examples/algo.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |     let sorted_quick = quick::sort(&d);
[INFO] [stderr]    |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sorted_quick`
[INFO] [stderr] 
[INFO] [stderr] warning: `rs_algo` (example "algo") generated 4 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rs_algo-a12a63efd53c66bf)
[INFO] [stdout] 
[INFO] [stdout] running 30 tests
[INFO] [stdout] test compare::subsequence::tests::lc_subsequence_empty_test ... ok
[INFO] [stdout] test compare::subsequence::tests::lc_subsequence_test ... ok
[INFO] [stdout] test compare::subsequence::tests::lc_subsequence_one_test ... ok
[INFO] [stdout] test compare::substring::tests::lc_substring_empty_test ... ok
[INFO] [stdout] test math::tests::factors_test ... ok
[INFO] [stdout] test math::tests::gcd_test ... ok
[INFO] [stdout] test math::tests::relative_prime_test ... ok
[INFO] [stdout] test compare::substring::tests::lc_substring_test ... ok
[INFO] [stdout] test compare::substring::tests::lc_substring_get_string_test ... ok
[INFO] [stdout] test search::binary::test::binary_search_index ... ok
[INFO] [stdout] test search::binary::test::binary_search ... ok
[INFO] [stdout] test search::binary::test::binary_search_none ... ok
[INFO] [stdout] test sort::bubble::tests::bubble_sort ... ok
[INFO] [stdout] test sort::bubble::tests::bubble_sort_empty ... ok
[INFO] [stdout] test sort::bubble::tests::bubble_sort_mut ... ok
[INFO] [stdout] test sort::bubble::tests::bubble_sort_str_mut ... ok
[INFO] [stdout] test sort::insertion::tests::insertion_sort ... ok
[INFO] [stdout] test sort::insertion::tests::insertion_sort_empty ... ok
[INFO] [stdout] test sort::insertion::tests::insertion_sort_mut ... ok
[INFO] [stdout] test sort::merge::tests::merge_empty_array ... ok
[INFO] [stdout] test sort::merge::tests::merge_single_array ... ok
[INFO] [stdout] test sort::insertion::tests::insertion_sort_str ... ok
[INFO] [stdout] test sort::merge::tests::merge_sort ... ok
[INFO] [stdout] test sort::merge::tests::merge_sort_mut ... ok
[INFO] [stdout] test sort::merge::tests::merge_str_array ... ok
[INFO] [stdout] test sort::quick::tests::quick_sort ... ok
[INFO] [stdout] test sort::quick::tests::quick_sort_empty ... ok
[INFO] [stdout] test sort::quick::tests::quick_sort_mut ... ok
[INFO] [stdout] test sort::quick::tests::quick_sort_single ... ok
[INFO] [stdout] test sort::quick::tests::quick_sort_str ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 30 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rs_algo
[INFO] [stdout] 
[INFO] [stdout] running 17 tests
[INFO] [stdout] test src/math/mod.rs - math::gcd (line 14) ... ok
[INFO] [stdout] test src/math/mod.rs - math::factors (line 61) ... ok
[INFO] [stdout] test src/math/mod.rs - math::relatively_prime (line 47) ... ok
[INFO] [stdout] test src/search/binary.rs - search::binary::index_of (line 10) ... ok
[INFO] [stdout] test src/sort/quick.rs - sort::quick::sort_mut (line 66) ... ok
[INFO] [stdout] test src/search/binary.rs - search::binary::search (line 51) ... ok
[INFO] [stdout] test src/compare/subsequence.rs - compare::subsequence::LCSubsequence (line 8) ... ok
[INFO] [stdout] test src/compare/subsequence.rs - compare::subsequence::LCSubsequence::fmt (line 28) ... ok
[INFO] [stdout] test src/sort/merge.rs - sort::merge::sort (line 61) ... ok
[INFO] [stdout] test src/compare/substring.rs - compare::substring::LCSubstring (line 7) ... ok
[INFO] [stdout] test src/sort/quick.rs - sort::quick::sort (line 45) ... ok
[INFO] [stdout] test src/sort/merge.rs - sort::merge::sort_mut (line 82) ... ok
[INFO] [stdout] test src/sort/bubble.rs - sort::bubble::sort_mut (line 34) ... ok
[INFO] [stdout] test src/compare/substring.rs - compare::substring::LCSubstring::fmt (line 30) ... ok
[INFO] [stdout] test src/sort/insertion.rs - sort::insertion::sort (line 4) ... ok
[INFO] [stdout] test src/sort/bubble.rs - sort::bubble::sort (line 13) ... ok
[INFO] [stdout] test src/sort/insertion.rs - sort::insertion::sort_mut (line 25) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 17 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.34s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6a21df7f4371062b40dee01a988f4a85f2858b45b151a053e59bfb08e23b92cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a21df7f4371062b40dee01a988f4a85f2858b45b151a053e59bfb08e23b92cd", kill_on_drop: false }`
[INFO] [stdout] 6a21df7f4371062b40dee01a988f4a85f2858b45b151a053e59bfb08e23b92cd