[INFO] fetching crate ternary-tree 0.1.1...
[INFO] testing ternary-tree-0.1.1 against 1.83.0 for beta-1.84.0-4-retry
[INFO] extracting crate ternary-tree 0.1.1 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate ternary-tree 0.1.1 on toolchain 1.83.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.83.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ternary-tree 0.1.1
[INFO] finished tweaking crates.io crate ternary-tree 0.1.1
[INFO] tweaked toml for crates.io crate ternary-tree 0.1.1 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.83.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.83.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+1.83.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 410b37376f916e34f4664ab22600dff032386efa05fad9007eff9ff161c6f67b
[INFO] running `Command { std: "docker" "start" "-a" "410b37376f916e34f4664ab22600dff032386efa05fad9007eff9ff161c6f67b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "410b37376f916e34f4664ab22600dff032386efa05fad9007eff9ff161c6f67b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "410b37376f916e34f4664ab22600dff032386efa05fad9007eff9ff161c6f67b", kill_on_drop: false }`
[INFO] [stdout] 410b37376f916e34f4664ab22600dff032386efa05fad9007eff9ff161c6f67b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "RUSTDOCFLAGS=--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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+1.83.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3a93845243a34b69334a8027b9fe04f639fee3259c0a8b790a938518fd9fc7be
[INFO] running `Command { std: "docker" "start" "-a" "3a93845243a34b69334a8027b9fe04f639fee3259c0a8b790a938518fd9fc7be", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]    Compiling ternary-tree v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] running `Command { std: "docker" "inspect" "3a93845243a34b69334a8027b9fe04f639fee3259c0a8b790a938518fd9fc7be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a93845243a34b69334a8027b9fe04f639fee3259c0a8b790a938518fd9fc7be", kill_on_drop: false }`
[INFO] [stdout] 3a93845243a34b69334a8027b9fe04f639fee3259c0a8b790a938518fd9fc7be
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "RUSTDOCFLAGS=--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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+1.83.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0831ef35fea2884a94de687f4f3ec45560b22557cf4481fb77bda69d4574d51e
[INFO] running `Command { std: "docker" "start" "-a" "0831ef35fea2884a94de687f4f3ec45560b22557cf4481fb77bda69d4574d51e", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]    Compiling ternary-tree v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> tests/tests.rs:376:34
[INFO] [stdout]     |
[INFO] [stdout] 376 |     map.visit_values(|s| v.push(s.clone()));
[INFO] [stdout]     |                                  ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> tests/tests.rs:394:50
[INFO] [stdout]     |
[INFO] [stdout] 394 |     map.visit_complete_values("ab", |s| {v.push(s.clone())});
[INFO] [stdout]     |                                                  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> tests/tests.rs:398:48
[INFO] [stdout]     |
[INFO] [stdout] 398 |     map.visit_complete_values("", |s| {v.push(s.clone())});
[INFO] [stdout]     |                                                ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> tests/tests.rs:415:54
[INFO] [stdout]     |
[INFO] [stdout] 415 |     map.visit_neighbor_values("abc", 1, |s| {v.push(s.clone())});
[INFO] [stdout]     |                                                      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> tests/tests.rs:419:54
[INFO] [stdout]     |
[INFO] [stdout] 419 |     map.visit_neighbor_values("abc", 2, |s| {v.push(s.clone())});
[INFO] [stdout]     |                                                      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> tests/tests.rs:423:54
[INFO] [stdout]     |
[INFO] [stdout] 423 |     map.visit_neighbor_values("abc", 3, |s| {v.push(s.clone())});
[INFO] [stdout]     |                                                      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> tests/tests.rs:427:55
[INFO] [stdout]     |
[INFO] [stdout] 427 |     map.visit_neighbor_values("xxxx", 4, |s| {v.push(s.clone())});
[INFO] [stdout]     |                                                       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> tests/tests.rs:431:51
[INFO] [stdout]     |
[INFO] [stdout] 431 |     map.visit_neighbor_values("", 0, |s| {v.push(s.clone())});
[INFO] [stdout]     |                                                   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> tests/tests.rs:435:51
[INFO] [stdout]     |
[INFO] [stdout] 435 |     map.visit_neighbor_values("", 1, |s| {v.push(s.clone())});
[INFO] [stdout]     |                                                   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> tests/tests.rs:439:51
[INFO] [stdout]     |
[INFO] [stdout] 439 |     map.visit_neighbor_values("", 2, |s| {v.push(s.clone())});
[INFO] [stdout]     |                                                   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> tests/tests.rs:443:51
[INFO] [stdout]     |
[INFO] [stdout] 443 |     map.visit_neighbor_values("", 3, |s| {v.push(s.clone())});
[INFO] [stdout]     |                                                   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> tests/tests.rs:447:51
[INFO] [stdout]     |
[INFO] [stdout] 447 |     map.visit_neighbor_values("", 4, |s| {v.push(s.clone())});
[INFO] [stdout]     |                                                   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> tests/tests.rs:460:53
[INFO] [stdout]     |
[INFO] [stdout] 460 |     map.visit_crossword_values("", '?', |s| v.push(s.clone()));
[INFO] [stdout]     |                                                     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> tests/tests.rs:464:54
[INFO] [stdout]     |
[INFO] [stdout] 464 |     map.visit_crossword_values("?", '?', |s| v.push(s.clone()));
[INFO] [stdout]     |                                                      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> tests/tests.rs:468:55
[INFO] [stdout]     |
[INFO] [stdout] 468 |     map.visit_crossword_values("a?", '?', |s| v.push(s.clone()));
[INFO] [stdout]     |                                                       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> tests/tests.rs:472:56
[INFO] [stdout]     |
[INFO] [stdout] 472 |     map.visit_crossword_values("a?a", '?', |s| v.push(s.clone()));
[INFO] [stdout]     |                                                        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> tests/tests.rs:476:56
[INFO] [stdout]     |
[INFO] [stdout] 476 |     map.visit_crossword_values("?a?", '?', |s| v.push(s.clone()));
[INFO] [stdout]     |                                                        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> tests/tests.rs:480:56
[INFO] [stdout]     |
[INFO] [stdout] 480 |     map.visit_crossword_values("???", '?', |s| v.push(s.clone()));
[INFO] [stdout]     |                                                        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> tests/tests.rs:484:57
[INFO] [stdout]     |
[INFO] [stdout] 484 |     map.visit_crossword_values("????", '?', |s| v.push(s.clone()));
[INFO] [stdout]     |                                                         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> tests/tests.rs:488:56
[INFO] [stdout]     |
[INFO] [stdout] 488 |     map.visit_crossword_values("aba", 'b', |s| v.push(s.clone()));
[INFO] [stdout]     |                                                        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]     --> tests/tests.rs:1762:34
[INFO] [stdout]      |
[INFO] [stdout] 1762 |     map.visit_values(|s| v.push(s.clone()));
[INFO] [stdout]      |                                  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.72s
[INFO] running `Command { std: "docker" "inspect" "0831ef35fea2884a94de687f4f3ec45560b22557cf4481fb77bda69d4574d51e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0831ef35fea2884a94de687f4f3ec45560b22557cf4481fb77bda69d4574d51e", kill_on_drop: false }`
[INFO] [stdout] 0831ef35fea2884a94de687f4f3ec45560b22557cf4481fb77bda69d4574d51e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "RUSTDOCFLAGS=--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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+1.83.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 856e4608683a83c0f896208c36188a2525714450339d70e8e14bacf6c2218d63
[INFO] running `Command { std: "docker" "start" "-a" "856e4608683a83c0f896208c36188a2525714450339d70e8e14bacf6c2218d63", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stderr]    --> tests/tests.rs:376:34
[INFO] [stderr]     |
[INFO] [stderr] 376 |     map.visit_values(|s| v.push(s.clone()));
[INFO] [stderr]     |                                  ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stderr]    --> tests/tests.rs:394:50
[INFO] [stderr]     |
[INFO] [stderr] 394 |     map.visit_complete_values("ab", |s| {v.push(s.clone())});
[INFO] [stderr]     |                                                  ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stderr]    --> tests/tests.rs:398:48
[INFO] [stderr]     |
[INFO] [stderr] 398 |     map.visit_complete_values("", |s| {v.push(s.clone())});
[INFO] [stderr]     |                                                ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stderr]    --> tests/tests.rs:415:54
[INFO] [stderr]     |
[INFO] [stderr] 415 |     map.visit_neighbor_values("abc", 1, |s| {v.push(s.clone())});
[INFO] [stderr]     |                                                      ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stderr]    --> tests/tests.rs:419:54
[INFO] [stderr]     |
[INFO] [stderr] 419 |     map.visit_neighbor_values("abc", 2, |s| {v.push(s.clone())});
[INFO] [stderr]     |                                                      ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stderr]    --> tests/tests.rs:423:54
[INFO] [stderr]     |
[INFO] [stderr] 423 |     map.visit_neighbor_values("abc", 3, |s| {v.push(s.clone())});
[INFO] [stderr]     |                                                      ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stderr]    --> tests/tests.rs:427:55
[INFO] [stderr]     |
[INFO] [stderr] 427 |     map.visit_neighbor_values("xxxx", 4, |s| {v.push(s.clone())});
[INFO] [stderr]     |                                                       ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stderr]    --> tests/tests.rs:431:51
[INFO] [stderr]     |
[INFO] [stderr] 431 |     map.visit_neighbor_values("", 0, |s| {v.push(s.clone())});
[INFO] [stderr]     |                                                   ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stderr]    --> tests/tests.rs:435:51
[INFO] [stderr]     |
[INFO] [stderr] 435 |     map.visit_neighbor_values("", 1, |s| {v.push(s.clone())});
[INFO] [stderr]     |                                                   ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stderr]    --> tests/tests.rs:439:51
[INFO] [stderr]     |
[INFO] [stderr] 439 |     map.visit_neighbor_values("", 2, |s| {v.push(s.clone())});
[INFO] [stderr]     |                                                   ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stderr]    --> tests/tests.rs:443:51
[INFO] [stderr]     |
[INFO] [stderr] 443 |     map.visit_neighbor_values("", 3, |s| {v.push(s.clone())});
[INFO] [stderr]     |                                                   ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stderr]    --> tests/tests.rs:447:51
[INFO] [stderr]     |
[INFO] [stderr] 447 |     map.visit_neighbor_values("", 4, |s| {v.push(s.clone())});
[INFO] [stderr]     |                                                   ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stderr]    --> tests/tests.rs:460:53
[INFO] [stderr]     |
[INFO] [stderr] 460 |     map.visit_crossword_values("", '?', |s| v.push(s.clone()));
[INFO] [stderr]     |                                                     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stderr]    --> tests/tests.rs:464:54
[INFO] [stderr]     |
[INFO] [stderr] 464 |     map.visit_crossword_values("?", '?', |s| v.push(s.clone()));
[INFO] [stderr]     |                                                      ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stderr]    --> tests/tests.rs:468:55
[INFO] [stderr]     |
[INFO] [stderr] 468 |     map.visit_crossword_values("a?", '?', |s| v.push(s.clone()));
[INFO] [stderr]     |                                                       ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stderr]    --> tests/tests.rs:472:56
[INFO] [stderr]     |
[INFO] [stderr] 472 |     map.visit_crossword_values("a?a", '?', |s| v.push(s.clone()));
[INFO] [stderr]     |                                                        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stderr]    --> tests/tests.rs:476:56
[INFO] [stderr]     |
[INFO] [stderr] 476 |     map.visit_crossword_values("?a?", '?', |s| v.push(s.clone()));
[INFO] [stderr]     |                                                        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stderr]    --> tests/tests.rs:480:56
[INFO] [stderr]     |
[INFO] [stderr] 480 |     map.visit_crossword_values("???", '?', |s| v.push(s.clone()));
[INFO] [stderr]     |                                                        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stderr]    --> tests/tests.rs:484:57
[INFO] [stderr]     |
[INFO] [stderr] 484 |     map.visit_crossword_values("????", '?', |s| v.push(s.clone()));
[INFO] [stderr]     |                                                         ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stderr]    --> tests/tests.rs:488:56
[INFO] [stderr]     |
[INFO] [stderr] 488 |     map.visit_crossword_values("aba", 'b', |s| v.push(s.clone()));
[INFO] [stderr]     |                                                        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stderr]     --> tests/tests.rs:1762:34
[INFO] [stderr]      |
[INFO] [stderr] 1762 |     map.visit_values(|s| v.push(s.clone()));
[INFO] [stderr]      |                                  ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `ternary-tree` (test "tests") generated 21 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/ternary_tree-0d1f9b7fe8aec386)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/tests.rs (/opt/rustwide/target/debug/deps/tests-ca842287f221e2c0)
[INFO] [stdout] 
[INFO] [stdout] running 35 tests
[INFO] [stdout] test tst_clear_some_map ... ok
[INFO] [stdout] test tst_create_empty_map ... ok
[INFO] [stdout] test tst_create_with_macro ... ok
[INFO] [stdout] test tst_current_key_iterators ... ok
[INFO] [stdout] test tst_fix_unicode_chars_in_key_bug ... ok
[INFO] [stdout] test tst_get_some_value_by_key ... ok
[INFO] [stdout] test tst_insert_and_get_more_key_value ... ok
[INFO] [stdout] test tst_get_value_back_on_empty_key ... ok
[INFO] [stdout] test tst_insert_and_remove_more_key_value ... ok
[INFO] [stdout] test tst_insert_and_remove_some_key_value ... ok
[INFO] [stdout] test tst_insert_some_key_value ... ok
[INFO] [stdout] test tst_iterate_and_read_current_key ... ok
[INFO] [stdout] test tst_iterate_and_read_current_key_back ... ok
[INFO] [stdout] test tst_iterate_over_empty_tree ... ok
[INFO] [stdout] test tst_iterate_over_values ... ok
[INFO] [stdout] test tst_iterate_over_values_backward ... ok
[INFO] [stdout] test tst_iterate_over_values_backward_with_rev ... ok
[INFO] [stdout] test tst_iterate_over_values_with_for_loop ... ok
[INFO] [stdout] test tst_iterate_over_values_from_both_end ... ok
[INFO] [stdout] test tst_iterate_with_complete ... ok
[INFO] [stdout] test tst_iterate_over_values_with_peek_and_co ... ok
[INFO] [stdout] test tst_iterate_with_crossword_from_both_end ... ok
[INFO] [stdout] test tst_iterate_with_neighbor_backward ... ok
[INFO] [stdout] test tst_iterate_with_neighbor ... ok
[INFO] [stdout] test tst_pretty_print ... ok
[INFO] [stdout] test tst_replace_some_value ... ok
[INFO] [stdout] test tst_visit_complete_values ... ok
[INFO] [stdout] test tst_visit_values ... ok
[INFO] [stdout] test tst_iterate_with_crossword ... ok
[INFO] [stdout] test tst_iterate_with_crossword_backward ... ok
[INFO] [stdout] test tst_visit_crossword_values ... ok
[INFO] [stdout] test tst_update_some_values ... ok
[INFO] [stdout] test tst_stats_on_insert_and_remove ... ok
[INFO] [stdout] test tst_visit_neighbor_values ... ok
[INFO] [stdout] test tst_iterate_with_neighbor_from_both_end ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 35 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests ternary_tree
[INFO] [stdout] 
[INFO] [stdout] running 23 tests
[INFO] [stdout] test src/lib.rs - Tst<T>::new (line 862) ... ok
[INFO] [stdout] test src/lib.rs - Tst<T>::get (line 930) ... ok
[INFO] [stdout] test src/lib.rs - Tst<T>::insert (line 878) ... ok
[INFO] [stdout] test src/lib.rs - Tst<T>::new (line 856) ... ok
[INFO] [stdout] test src/lib.rs - Tst<T>::remove (line 981) ... ok
[INFO] [stdout] test src/lib.rs - Tst<T>::iter_crossword (line 1443) ... ok
[INFO] [stdout] test src/lib.rs - Tst<T>::iter_neighbor (line 1407) ... ok
[INFO] [stdout] test src/lib.rs - Tst<T>::clear (line 1066) ... ok
[INFO] [stdout] test src/lib.rs - Tst<T>::iter (line 1336) ... ok
[INFO] [stdout] test src/lib.rs - Tst<T>::iter_complete (line 1370) ... ok
[INFO] [stdout] test src/lib.rs - Tst<T>::insert (line 891) ... ok
[INFO] [stdout] test src/lib.rs - Tst<T>::get_mut (line 953) ... ok
[INFO] [stdout] test src/lib.rs - (line 57) ... FAILED
[INFO] [stdout] test src/lib.rs - Tst<T>::visit_complete_values (line 1121) ... ok
[INFO] [stdout] test src/lib.rs - Tst<T>::len (line 1019) ... ok
[INFO] [stdout] test src/lib.rs - Tst<T>::stat (line 1037) ... ok
[INFO] [stdout] test src/lib.rs - Tst<T>::visit_complete_values (line 1134) ... ok
[INFO] [stdout] test src/lib.rs - Tst<T>::visit_neighbor_values (line 1192) ... ok
[INFO] [stdout] test src/lib.rs - Tst<T>::visit_neighbor_values (line 1206) ... ok
[INFO] [stdout] test src/lib.rs - Tst<T>::visit_values (line 1088) ... ok
[INFO] [stdout] test src/lib.rs - Tst<T>::visit_crossword_values (line 1251) ... ok
[INFO] [stdout] test src/lib.rs - Tst<T>::visit_crossword_values (line 1263) ... ok
[INFO] [stdout] test src/lib.rs - tst (line 1470) ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 57) stdout ----
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]   --> src/lib.rs:87:52
[INFO] [stdout]    |
[INFO] [stdout] 32 | map.visit_crossword_values("a?a", '?', |s| v.push(s.clone()));
[INFO] [stdout]    |                                                    ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] Test executable failed (exit status: 101).
[INFO] [stdout] 
[INFO] [stdout] stderr:
[INFO] [stdout] thread 'main' panicked at src/lib.rs:26:40:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5c69a9a1262a - std::backtrace_rs::backtrace::libunwind::trace::h5a5b8284f2d0c266
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5
[INFO] [stdout]    1:     0x5c69a9a1262a - std::backtrace_rs::backtrace::trace_unsynchronized::h76d4f1c9b0b875e3
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x5c69a9a1262a - std::sys::backtrace::_print_fmt::hc4546b8364a537c6
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x5c69a9a1262a - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h5b6bd5631a6d1f6b
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x5c69a9a2df33 - core::fmt::rt::Argument::fmt::h270f6602a2b96f62
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/core/src/fmt/rt.rs:177:76
[INFO] [stdout]    5:     0x5c69a9a2df33 - core::fmt::write::h7550c97b06c86515
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/core/src/fmt/mod.rs:1186:21
[INFO] [stdout]    6:     0x5c69a9a103d3 - std::io::Write::write_fmt::h7b09c64fe0be9c84
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/io/mod.rs:1839:15
[INFO] [stdout]    7:     0x5c69a9a12472 - std::sys::backtrace::BacktraceLock::print::h2395ccd2c84ba3aa
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    8:     0x5c69a9a1341c - std::panicking::default_hook::{{closure}}::he19d4c7230e07961
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:268:22
[INFO] [stdout]    9:     0x5c69a9a13262 - std::panicking::default_hook::hf614597d3c67bbdb
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:295:9
[INFO] [stdout]   10:     0x5c69a9a139f7 - std::panicking::rust_panic_with_hook::h8942133a8b252070
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:801:13
[INFO] [stdout]   11:     0x5c69a9a1388a - std::panicking::begin_panic_handler::{{closure}}::hb5f5963570096b29
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:674:13
[INFO] [stdout]   12:     0x5c69a9a12b09 - std::sys::backtrace::__rust_end_short_backtrace::h6208cedc1922feda
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/sys/backtrace.rs:170:18
[INFO] [stdout]   13:     0x5c69a9a1351c - rust_begin_unwind
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:665:5
[INFO] [stdout]   14:     0x5c69a99ec040 - core::panicking::panic_fmt::h0c3082644d1bf418
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/core/src/panicking.rs:74:14
[INFO] [stdout]   15:     0x5c69a99ec456 - core::result::unwrap_failed::hd20b4aa073bda1e2
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/core/src/result.rs:1700:5
[INFO] [stdout]   16:     0x5c69a99f3cfa - rust_out::main::_doctest_main_src_lib_rs_57_0::h119a42a1c4a8f94a
[INFO] [stdout]   17:     0x5c69a99f3ba6 - rust_out::main::h86d391cc11b8a827
[INFO] [stdout]   18:     0x5c69a99f1213 - core::ops::function::FnOnce::call_once::hd1e0b33d350e8c2e
[INFO] [stdout]   19:     0x5c69a99f0a66 - std::sys::backtrace::__rust_begin_short_backtrace::hb7c4fd168269da08
[INFO] [stdout]   20:     0x5c69a99f09a9 - std::rt::lang_start::{{closure}}::h7630186e3858a44d
[INFO] [stdout]   21:     0x5c69a9a0e7be - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hfdb85f4ee94732d3
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/core/src/ops/function.rs:284:13
[INFO] [stdout]   22:     0x5c69a9a0e7be - std::panicking::try::do_call::h6e577310f330cbef
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:557:40
[INFO] [stdout]   23:     0x5c69a9a0e7be - std::panicking::try::ha588d438267d2645
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:520:19
[INFO] [stdout]   24:     0x5c69a9a0e7be - std::panic::catch_unwind::h429fda1e025f26d9
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panic.rs:358:14
[INFO] [stdout]   25:     0x5c69a9a0e7be - std::rt::lang_start_internal::{{closure}}::h7b731265e841c4bf
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/rt.rs:174:48
[INFO] [stdout]   26:     0x5c69a9a0e7be - std::panicking::try::do_call::hc0f6a675b7ae5a36
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:557:40
[INFO] [stdout]   27:     0x5c69a9a0e7be - std::panicking::try::h4c93b7ff0671f1ff
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:520:19
[INFO] [stdout]   28:     0x5c69a9a0e7be - std::panic::catch_unwind::hcc1e154961d16ce6
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panic.rs:358:14
[INFO] [stdout]   29:     0x5c69a9a0e7be - std::rt::lang_start_internal::h1c66660c99c8424c
[INFO] [stdout]                                at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/rt.rs:174:20
[INFO] [stdout]   30:     0x5c69a99f0987 - std::rt::lang_start::hcdb31f4834f76b8c
[INFO] [stdout]   31:     0x5c69a99f4215 - main
[INFO] [stdout]   32:     0x74d4905b4d90 - <unknown>
[INFO] [stdout]   33:     0x74d4905b4e40 - __libc_start_main
[INFO] [stdout]   34:     0x5c69a99ec815 - _start
[INFO] [stdout]   35:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 57)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 22 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.75s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "856e4608683a83c0f896208c36188a2525714450339d70e8e14bacf6c2218d63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "856e4608683a83c0f896208c36188a2525714450339d70e8e14bacf6c2218d63", kill_on_drop: false }`
[INFO] [stdout] 856e4608683a83c0f896208c36188a2525714450339d70e8e14bacf6c2218d63
