[INFO] fetching crate fuzzy-tree 0.1.2...
[INFO] testing fuzzy-tree-0.1.2 against 1.49.0 for beta-1.50-1
[INFO] extracting crate fuzzy-tree 0.1.2 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate fuzzy-tree 0.1.2 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 fuzzy-tree 0.1.2
[INFO] finished tweaking crates.io crate fuzzy-tree 0.1.2
[INFO] tweaked toml for crates.io crate fuzzy-tree 0.1.2 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate fuzzy-tree 0.1.2 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-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/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] f7a72f2719e684fcbfa3ee6f5987c5d8c79af74ee809d9d22094330b023b7338
[INFO] running `Command { std: "docker" "start" "-a" "f7a72f2719e684fcbfa3ee6f5987c5d8c79af74ee809d9d22094330b023b7338", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f7a72f2719e684fcbfa3ee6f5987c5d8c79af74ee809d9d22094330b023b7338", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7a72f2719e684fcbfa3ee6f5987c5d8c79af74ee809d9d22094330b023b7338", kill_on_drop: false }`
[INFO] [stdout] f7a72f2719e684fcbfa3ee6f5987c5d8c79af74ee809d9d22094330b023b7338
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6338ce2b70d4ca11b9bd1e176868461eb7bd8a6f0a7800602f28045e40e0c42c
[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" "6338ce2b70d4ca11b9bd1e176868461eb7bd8a6f0a7800602f28045e40e0c42c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]    Compiling rustc-demangle v0.1.16
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling regex-syntax v0.6.17
[INFO] [stderr]    Compiling unicode-width v0.1.7
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling numtoa v0.1.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.36
[INFO] [stderr]    Compiling aho-corasick v0.7.10
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling termion v1.5.5
[INFO] [stderr]    Compiling backtrace v0.3.46
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling failure v0.1.7
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]    Compiling regex v1.3.6
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling fuzzy-tree v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 26.02s
[INFO] running `Command { std: "docker" "inspect" "6338ce2b70d4ca11b9bd1e176868461eb7bd8a6f0a7800602f28045e40e0c42c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6338ce2b70d4ca11b9bd1e176868461eb7bd8a6f0a7800602f28045e40e0c42c", kill_on_drop: false }`
[INFO] [stdout] 6338ce2b70d4ca11b9bd1e176868461eb7bd8a6f0a7800602f28045e40e0c42c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--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] 511f07bd76313ed6d1f9342757f6a8ff16618338d3a3574c00770c19c50555fa
[INFO] running `Command { std: "docker" "start" "-a" "511f07bd76313ed6d1f9342757f6a8ff16618338d3a3574c00770c19c50555fa", kill_on_drop: false }`
[INFO] [stderr]    Compiling fuzzy-tree v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tree.rs:525:7
[INFO] [stdout]     |
[INFO] [stdout] 525 |         let mut paths = create_test_paths();
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.04s
[INFO] running `Command { std: "docker" "inspect" "511f07bd76313ed6d1f9342757f6a8ff16618338d3a3574c00770c19c50555fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "511f07bd76313ed6d1f9342757f6a8ff16618338d3a3574c00770c19c50555fa", kill_on_drop: false }`
[INFO] [stdout] 511f07bd76313ed6d1f9342757f6a8ff16618338d3a3574c00770c19c50555fa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/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] ba1691554a4a2fb5649785c638116b207f87d4a16e8cd052b9339603fffd2e44
[INFO] running `Command { std: "docker" "start" "-a" "ba1691554a4a2fb5649785c638116b207f87d4a16e8cd052b9339603fffd2e44", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/tree.rs:525:7
[INFO] [stderr]     |
[INFO] [stderr] 525 |         let mut paths = create_test_paths();
[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] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/fztree-72b2be4726e5ad3a
[INFO] [stdout] 
[INFO] [stdout] running 16 tests
[INFO] [stdout] test path::test::sorting_is_correct ... ok
[INFO] [stdout] test tree::test::correct_lines_after_filtering ... ok
[INFO] [stdout] test tree::test::correct_n_descendants ... ok
[INFO] [stdout] test tree::test::update_matched_test ... ok
[INFO] [stdout] test tree::test::merging_indices_works ... ok
[INFO] [stdout] test tree::test::reducing_patterns ... ok
[INFO] [stdout] test tree::test::tree_string_correct ... ok
[INFO] [stdout] test tree::test::correct_n_matched_after_matching_with_empty_string ... ok
[INFO] [stdout] test tree::test::adjacent_matches_are_colored_correctly ... ok
[INFO] [stdout] test tree::test::match_paths_sets_matched_field_correctly ... ok
[INFO] [stdout] test path::test::len_correct ... ok
[INFO] [stdout] test tree::test::correct_tree_string ... ok
[INFO] [stdout] test tree::test::match_paths_colors_basename ... ok
[INFO] [stdout] test tree::test::create_tree_correct ... ok
[INFO] [stdout] test path::test::is_child_of_correctness ... ok
[INFO] [stdout] test path::test::basename_correct ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 16 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ba1691554a4a2fb5649785c638116b207f87d4a16e8cd052b9339603fffd2e44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba1691554a4a2fb5649785c638116b207f87d4a16e8cd052b9339603fffd2e44", kill_on_drop: false }`
[INFO] [stdout] ba1691554a4a2fb5649785c638116b207f87d4a16e8cd052b9339603fffd2e44