[INFO] fetching crate rs_algo 0.2.1...
[INFO] testing rs_algo-0.2.1 against 1.49.0 for beta-1.50-1
[INFO] extracting crate rs_algo 0.2.1 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate rs_algo 0.2.1 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", 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-1/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" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b98b1954c2c5b46d1d7f97da7cc5da66f856fb0a2c2b4160a92f2d243fec6408
[INFO] running `Command { std: "docker" "start" "-a" "b98b1954c2c5b46d1d7f97da7cc5da66f856fb0a2c2b4160a92f2d243fec6408", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b98b1954c2c5b46d1d7f97da7cc5da66f856fb0a2c2b4160a92f2d243fec6408", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b98b1954c2c5b46d1d7f97da7cc5da66f856fb0a2c2b4160a92f2d243fec6408", kill_on_drop: false }`
[INFO] [stdout] b98b1954c2c5b46d1d7f97da7cc5da66f856fb0a2c2b4160a92f2d243fec6408
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 68f5993f0ebcb99c421072d958317300de17b050463adc92c9a6322485b7612f
[INFO] running `Command { std: "docker" "start" "-a" "68f5993f0ebcb99c421072d958317300de17b050463adc92c9a6322485b7612f", kill_on_drop: false }`
[INFO] [stderr]    Compiling rs_algo v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.11s
[INFO] running `Command { std: "docker" "inspect" "68f5993f0ebcb99c421072d958317300de17b050463adc92c9a6322485b7612f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68f5993f0ebcb99c421072d958317300de17b050463adc92c9a6322485b7612f", kill_on_drop: false }`
[INFO] [stdout] 68f5993f0ebcb99c421072d958317300de17b050463adc92c9a6322485b7612f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0faf40ed5a919f42f0870657ea1b9ed64791121ffed11805b55744dc2a8d3a33
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0faf40ed5a919f42f0870657ea1b9ed64791121ffed11805b55744dc2a8d3a33", kill_on_drop: false }`
[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 2.30s
[INFO] running `Command { std: "docker" "inspect" "0faf40ed5a919f42f0870657ea1b9ed64791121ffed11805b55744dc2a8d3a33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0faf40ed5a919f42f0870657ea1b9ed64791121ffed11805b55744dc2a8d3a33", kill_on_drop: false }`
[INFO] [stdout] 0faf40ed5a919f42f0870657ea1b9ed64791121ffed11805b55744dc2a8d3a33
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9c7faaf8d12ee6fe8b33f9393f07cc64c78dd0ca34ca3221424d8fb3f792156a
[INFO] running `Command { std: "docker" "start" "-a" "9c7faaf8d12ee6fe8b33f9393f07cc64c78dd0ca34ca3221424d8fb3f792156a", kill_on_drop: false }`
[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: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rs_algo-bfdefd4947ca7b5a
[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::substring::tests::lc_substring_empty_test ... ok
[INFO] [stdout] test compare::substring::tests::lc_substring_test ... ok
[INFO] [stdout] test math::tests::relative_prime_test ... ok
[INFO] [stdout] test sort::bubble::tests::bubble_sort_empty ... ok
[INFO] [stdout] test sort::bubble::tests::bubble_sort_str_mut ... ok
[INFO] [stdout] test sort::bubble::tests::bubble_sort_mut ... ok
[INFO] [stdout] test compare::substring::tests::lc_substring_get_string_test ... ok
[INFO] [stdout] test math::tests::gcd_test ... ok
[INFO] [stdout] test sort::insertion::tests::insertion_sort ... 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_sort ... ok
[INFO] [stdout] test compare::subsequence::tests::lc_subsequence_one_test ... 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 search::binary::test::binary_search ... ok
[INFO] [stdout] test math::tests::factors_test ... ok
[INFO] [stdout] test sort::bubble::tests::bubble_sort ... ok
[INFO] [stdout] test sort::insertion::tests::insertion_sort_empty ... ok
[INFO] [stdout] test search::binary::test::binary_search_none ... ok
[INFO] [stdout] test sort::insertion::tests::insertion_sort_str ... ok
[INFO] [stdout] test sort::merge::tests::merge_single_array ... ok
[INFO] [stdout] test sort::quick::tests::quick_sort_mut ... ok
[INFO] [stdout] test search::binary::test::binary_search_index ... ok
[INFO] [stdout] test sort::quick::tests::quick_sort_single ... ok
[INFO] [stdout] test sort::quick::tests::quick_sort_str ... ok
[INFO] [stdout] test sort::quick::tests::quick_sort_empty ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 30 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rs_algo
[INFO] [stdout] 
[INFO] [stdout] running 17 tests
[INFO] [stdout] test src/sort/merge.rs - sort::merge::sort (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/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 (line 13) ... ok
[INFO] [stdout] test src/math/mod.rs - math::relatively_prime (line 47) ... 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 (line 7) ... ok
[INFO] [stdout] test src/search/binary.rs - search::binary::index_of (line 10) ... ok
[INFO] [stdout] test src/math/mod.rs - math::factors (line 61) ... ok
[INFO] [stdout] test src/sort/insertion.rs - sort::insertion::sort (line 4) ... 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/merge.rs - sort::merge::sort_mut (line 82) ... ok
[INFO] [stdout] test src/sort/quick.rs - sort::quick::sort (line 45) ... ok
[INFO] [stdout] test src/sort/quick.rs - sort::quick::sort_mut (line 66) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 17 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "9c7faaf8d12ee6fe8b33f9393f07cc64c78dd0ca34ca3221424d8fb3f792156a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c7faaf8d12ee6fe8b33f9393f07cc64c78dd0ca34ca3221424d8fb3f792156a", kill_on_drop: false }`
[INFO] [stdout] 9c7faaf8d12ee6fe8b33f9393f07cc64c78dd0ca34ca3221424d8fb3f792156a