[INFO] fetching crate rs_algo 0.2.1...
[INFO] testing rs_algo-0.2.1 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate rs_algo 0.2.1 into /workspace/builds/worker-88/source
[INFO] validating manifest of crates.io crate rs_algo 0.2.1 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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-88/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-2021-09-08" "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-88/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d243f58f6b7da584dfa1e2886e2ae5ab8ecd15824cb526b2618eba294e8e2bbf
[INFO] running `Command { std: "docker" "start" "-a" "d243f58f6b7da584dfa1e2886e2ae5ab8ecd15824cb526b2618eba294e8e2bbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d243f58f6b7da584dfa1e2886e2ae5ab8ecd15824cb526b2618eba294e8e2bbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d243f58f6b7da584dfa1e2886e2ae5ab8ecd15824cb526b2618eba294e8e2bbf", kill_on_drop: false }`
[INFO] [stdout] d243f58f6b7da584dfa1e2886e2ae5ab8ecd15824cb526b2618eba294e8e2bbf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 15c07548051ac690b55219114cc38e05a6620f9e7fd7d954f7a45ced3db1339d
[INFO] running `Command { std: "docker" "start" "-a" "15c07548051ac690b55219114cc38e05a6620f9e7fd7d954f7a45ced3db1339d", kill_on_drop: false }`
[INFO] [stderr]    Compiling rs_algo v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.30s
[INFO] running `Command { std: "docker" "inspect" "15c07548051ac690b55219114cc38e05a6620f9e7fd7d954f7a45ced3db1339d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15c07548051ac690b55219114cc38e05a6620f9e7fd7d954f7a45ced3db1339d", kill_on_drop: false }`
[INFO] [stdout] 15c07548051ac690b55219114cc38e05a6620f9e7fd7d954f7a45ced3db1339d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d8bc3a4ac21f719a921aebc7b057ca45c5067c29be99fc1b2a09c994c9c97461
[INFO] running `Command { std: "docker" "start" "-a" "d8bc3a4ac21f719a921aebc7b057ca45c5067c29be99fc1b2a09c994c9c97461", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rs_algo v0.2.1 (/opt/rustwide/workdir)
[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: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.58s
[INFO] running `Command { std: "docker" "inspect" "d8bc3a4ac21f719a921aebc7b057ca45c5067c29be99fc1b2a09c994c9c97461", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8bc3a4ac21f719a921aebc7b057ca45c5067c29be99fc1b2a09c994c9c97461", kill_on_drop: false }`
[INFO] [stdout] d8bc3a4ac21f719a921aebc7b057ca45c5067c29be99fc1b2a09c994c9c97461
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8ea1e84e6b290cb92b5caf5914bb090ea5c11faa8ab9385b07d9a768515ca2df
[INFO] running `Command { std: "docker" "start" "-a" "8ea1e84e6b290cb92b5caf5914bb090ea5c11faa8ab9385b07d9a768515ca2df", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unused variable: `sorted_bubble`
[INFO] [stdout] running 30 tests
[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 0.19s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rs_algo-a12a63efd53c66bf)
[INFO] [stdout] test compare::subsequence::tests::lc_subsequence_one_test ... ok
[INFO] [stdout] test compare::subsequence::tests::lc_subsequence_test ... ok
[INFO] [stdout] test compare::substring::tests::lc_substring_get_string_test ... ok
[INFO] [stdout] test compare::substring::tests::lc_substring_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 search::binary::test::binary_search ... ok
[INFO] [stdout] test sort::bubble::tests::bubble_sort ... ok
[INFO] [stdout] test sort::bubble::tests::bubble_sort_empty ... ok
[INFO] [stdout] test search::binary::test::binary_search_index ... ok
[INFO] [stdout] test search::binary::test::binary_search_none ... ok
[INFO] [stdout] test compare::substring::tests::lc_substring_empty_test ... ok
[INFO] [stdout] test sort::bubble::tests::bubble_sort_mut ... ok
[INFO] [stdout] test compare::subsequence::tests::lc_subsequence_empty_test ... ok
[INFO] [stdout] test sort::bubble::tests::bubble_sort_str_mut ... ok
[INFO] [stdout] test sort::insertion::tests::insertion_sort_empty ... ok
[INFO] [stdout] test sort::insertion::tests::insertion_sort ... ok
[INFO] [stdout] test sort::merge::tests::merge_empty_array ... ok
[INFO] [stdout] test sort::merge::tests::merge_sort ... ok
[INFO] [stdout] test sort::quick::tests::quick_sort ... ok
[INFO] [stdout] test sort::merge::tests::merge_sort_mut ... ok
[INFO] [stdout] test sort::insertion::tests::insertion_sort_str ... ok
[INFO] [stdout] test sort::insertion::tests::insertion_sort_mut ... ok
[INFO] [stdout] test sort::quick::tests::quick_sort_empty ... ok
[INFO] [stdout] test sort::merge::tests::merge_str_array ... ok
[INFO] [stdout] test sort::quick::tests::quick_sort_mut ... ok
[INFO] [stdout] test sort::quick::tests::quick_sort_single ... ok
[INFO] [stderr]    Doc-tests rs_algo
[INFO] [stdout] test sort::quick::tests::quick_sort_str ... ok
[INFO] [stdout] test sort::merge::tests::merge_single_array ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 30 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.06s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 17 tests
[INFO] [stdout] test src/math/mod.rs - math::factors (line 61) ... ok
[INFO] [stdout] test src/sort/insertion.rs - sort::insertion::sort_mut (line 25) ... ok
[INFO] [stdout] test src/math/mod.rs - math::gcd (line 14) ... ok
[INFO] [stdout] test src/math/mod.rs - math::relatively_prime (line 47) ... ok
[INFO] [stdout] test src/sort/quick.rs - sort::quick::sort_mut (line 66) ... ok
[INFO] [stdout] test src/search/binary.rs - search::binary::index_of (line 10) ... 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/merge.rs - sort::merge::sort_mut (line 82) ... ok
[INFO] [stdout] test src/compare/substring.rs - compare::substring::LCSubstring::fmt (line 30) ... ok
[INFO] [stdout] test src/search/binary.rs - search::binary::search (line 51) ... ok
[INFO] [stdout] test src/sort/bubble.rs - sort::bubble::sort_mut (line 34) ... ok
[INFO] [stdout] test src/compare/subsequence.rs - compare::subsequence::LCSubsequence::fmt (line 28) ... ok
[INFO] [stdout] test src/compare/subsequence.rs - compare::subsequence::LCSubsequence (line 8) ... ok
[INFO] [stdout] test src/sort/bubble.rs - sort::bubble::sort (line 13) ... ok
[INFO] [stdout] test src/sort/insertion.rs - sort::insertion::sort (line 4) ... ok
[INFO] [stdout] test src/sort/quick.rs - sort::quick::sort (line 45) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 17 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.80s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "8ea1e84e6b290cb92b5caf5914bb090ea5c11faa8ab9385b07d9a768515ca2df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ea1e84e6b290cb92b5caf5914bb090ea5c11faa8ab9385b07d9a768515ca2df", kill_on_drop: false }`
[INFO] [stdout] 8ea1e84e6b290cb92b5caf5914bb090ea5c11faa8ab9385b07d9a768515ca2df