[INFO] fetching crate ternary-tree 0.1.1...
[INFO] testing ternary-tree-0.1.1 against 1.76.0 for beta-1.77-1
[INFO] extracting crate ternary-tree 0.1.1 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate ternary-tree 0.1.1 on toolchain 1.76.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "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-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "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" "+1.76.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3c9ad5f2d5e8cb28df34e62e1c8ac614d5be0cbbd297a967de2df23a84fc1230
[INFO] running `Command { std: "docker" "start" "-a" "3c9ad5f2d5e8cb28df34e62e1c8ac614d5be0cbbd297a967de2df23a84fc1230", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3c9ad5f2d5e8cb28df34e62e1c8ac614d5be0cbbd297a967de2df23a84fc1230", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c9ad5f2d5e8cb28df34e62e1c8ac614d5be0cbbd297a967de2df23a84fc1230", kill_on_drop: false }`
[INFO] [stdout] 3c9ad5f2d5e8cb28df34e62e1c8ac614d5be0cbbd297a967de2df23a84fc1230
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aaaee1c52d57c0b7a7730975bb5e51535672ea9fbd94d35b5ff2d1a365fa1b0e
[INFO] running `Command { std: "docker" "start" "-a" "aaaee1c52d57c0b7a7730975bb5e51535672ea9fbd94d35b5ff2d1a365fa1b0e", kill_on_drop: false }`
[INFO] [stderr]    Compiling ternary-tree v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.10s
[INFO] running `Command { std: "docker" "inspect" "aaaee1c52d57c0b7a7730975bb5e51535672ea9fbd94d35b5ff2d1a365fa1b0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aaaee1c52d57c0b7a7730975bb5e51535672ea9fbd94d35b5ff2d1a365fa1b0e", kill_on_drop: false }`
[INFO] [stdout] aaaee1c52d57c0b7a7730975bb5e51535672ea9fbd94d35b5ff2d1a365fa1b0e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9e93a015ab48954fe5508bdb1b3cbcad4dc626cba3a11db0dadcb354e01f66a2
[INFO] running `Command { std: "docker" "start" "-a" "9e93a015ab48954fe5508bdb1b3cbcad4dc626cba3a11db0dadcb354e01f66a2", kill_on_drop: false }`
[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] [stdout] warning: 21 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.57s
[INFO] running `Command { std: "docker" "inspect" "9e93a015ab48954fe5508bdb1b3cbcad4dc626cba3a11db0dadcb354e01f66a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e93a015ab48954fe5508bdb1b3cbcad4dc626cba3a11db0dadcb354e01f66a2", kill_on_drop: false }`
[INFO] [stdout] 9e93a015ab48954fe5508bdb1b3cbcad4dc626cba3a11db0dadcb354e01f66a2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f26d9868fe9b5502bba4c8346790c81aac73318d600ac5b798d7c66ae63b280d
[INFO] running `Command { std: "docker" "start" "-a" "f26d9868fe9b5502bba4c8346790c81aac73318d600ac5b798d7c66ae63b280d", kill_on_drop: false }`
[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 [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/ternary_tree-3af8d4279cdf7ba4)
[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-d08b26c93703cb8f)
[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_get_value_back_on_empty_key ... ok
[INFO] [stdout] test tst_insert_and_get_more_key_value ... 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_iterate_and_read_current_key ... ok
[INFO] [stdout] test tst_iterate_over_values_backward_with_rev ... ok
[INFO] [stdout] test tst_insert_some_key_value ... ok
[INFO] [stdout] test tst_iterate_over_values ... ok
[INFO] [stdout] test tst_iterate_over_values_backward ... 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_from_both_end ... ok
[INFO] [stdout] test tst_iterate_over_values_with_for_loop ... 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_crossword_backward ... ok
[INFO] [stdout] test tst_iterate_with_crossword ... ok
[INFO] [stdout] test tst_iterate_with_complete ... ok
[INFO] [stdout] test tst_iterate_with_neighbor ... ok
[INFO] [stdout] test tst_replace_some_value ... ok
[INFO] [stdout] test tst_iterate_with_neighbor_backward ... ok
[INFO] [stdout] test tst_iterate_with_neighbor_from_both_end ... ok
[INFO] [stdout] test tst_update_some_values ... ok
[INFO] [stdout] test tst_visit_complete_values ... ok
[INFO] [stdout] test tst_stats_on_insert_and_remove ... ok
[INFO] [stdout] test tst_visit_neighbor_values ... ok
[INFO] [stdout] test tst_visit_values ... ok
[INFO] [stdout] test tst_pretty_print ... ok
[INFO] [stdout] test tst_visit_crossword_values ... 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>::insert (line 878) ... ok
[INFO] [stdout] test src/lib.rs - Tst<T>::get (line 930) ... ok
[INFO] [stdout] test src/lib.rs - Tst<T>::insert (line 891) ... 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>::get_mut (line 953) ... ok
[INFO] [stdout] test src/lib.rs - Tst<T>::iter_complete (line 1370) ... ok
[INFO] [stdout] test src/lib.rs - (line 57) ... FAILED
[INFO] [stdout] test src/lib.rs - Tst<T>::len (line 1019) ... ok
[INFO] [stdout] test src/lib.rs - Tst<T>::new (line 856) ... ok
[INFO] [stdout] test src/lib.rs - Tst<T>::new (line 862) ... ok
[INFO] [stdout] test src/lib.rs - Tst<T>::iter_neighbor (line 1407) ... ok
[INFO] [stdout] test src/lib.rs - Tst<T>::iter_crossword (line 1443) ... ok
[INFO] [stdout] test src/lib.rs - Tst<T>::stat (line 1037) ... ok
[INFO] [stdout] test src/lib.rs - Tst<T>::remove (line 981) ... ok
[INFO] [stdout] test src/lib.rs - Tst<T>::visit_complete_values (line 1121) ... ok
[INFO] [stdout] test src/lib.rs - Tst<T>::visit_complete_values (line 1134) ... ok
[INFO] [stdout] test src/lib.rs - tst (line 1470) ... ok
[INFO] [stdout] test src/lib.rs - Tst<T>::visit_neighbor_values (line 1206) ... ok
[INFO] [stdout] test src/lib.rs - Tst<T>::visit_neighbor_values (line 1192) ... ok
[INFO] [stdout] test src/lib.rs - Tst<T>::visit_crossword_values (line 1263) ... ok
[INFO] [stdout] test src/lib.rs - Tst<T>::visit_crossword_values (line 1251) ... ok
[INFO] [stdout] test src/lib.rs - Tst<T>::visit_values (line 1088) ... 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:     0x563cb073e0d6 - std::backtrace_rs::backtrace::libunwind::trace::hbee8a7973eeb6c93
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
[INFO] [stdout]    1:     0x563cb073e0d6 - std::backtrace_rs::backtrace::trace_unsynchronized::hc8ac75eea3aa6899
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x563cb073e0d6 - std::sys_common::backtrace::_print_fmt::hc7f3e3b5298b1083
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stdout]    3:     0x563cb073e0d6 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hbb235daedd7c6190
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stdout]    4:     0x563cb075cf30 - core::fmt::rt::Argument::fmt::h76c38a80d925a410
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/fmt/rt.rs:142:9
[INFO] [stdout]    5:     0x563cb075cf30 - core::fmt::write::h3ed6aeaa977c8e45
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/fmt/mod.rs:1120:17
[INFO] [stdout]    6:     0x563cb073c58f - std::io::Write::write_fmt::h78b18af5775fedb5
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/io/mod.rs:1810:15
[INFO] [stdout]    7:     0x563cb073deb4 - std::sys_common::backtrace::_print::h5d645a07e0fcfdbb
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    8:     0x563cb073deb4 - std::sys_common::backtrace::print::h85035a511aafe7a8
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    9:     0x563cb073f417 - std::panicking::default_hook::{{closure}}::hcce8cea212785a25
[INFO] [stdout]   10:     0x563cb073f179 - std::panicking::default_hook::hf5fcb0f213fe709a
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:292:9
[INFO] [stdout]   11:     0x563cb073f8a8 - std::panicking::rust_panic_with_hook::h095fccf1dc9379ee
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:779:13
[INFO] [stdout]   12:     0x563cb073f782 - std::panicking::begin_panic_handler::{{closure}}::h032ba12139b353db
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:657:13
[INFO] [stdout]   13:     0x563cb073e5d6 - std::sys_common::backtrace::__rust_end_short_backtrace::h9259bc2ff8fd0f76
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stdout]   14:     0x563cb073f4e0 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:645:5
[INFO] [stdout]   15:     0x563cb0719e05 - core::panicking::panic_fmt::h784f20a50eaab275
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panicking.rs:72:14
[INFO] [stdout]   16:     0x563cb071a363 - core::result::unwrap_failed::h03d8a5018196e1cd
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/result.rs:1649:5
[INFO] [stdout]   17:     0x563cb0720014 - core::result::Result<T,E>::unwrap::h138c391c4a83937f
[INFO] [stdout]   18:     0x563cb0722f0c - rust_out::main::_doctest_main_src_lib_rs_57_0::hd120ceca450f57c4
[INFO] [stdout]   19:     0x563cb0722de6 - rust_out::main::h7d13ed1f0b74fb4f
[INFO] [stdout]   20:     0x563cb071efd3 - core::ops::function::FnOnce::call_once::h9310bc2590e31970
[INFO] [stdout]   21:     0x563cb071d936 - std::sys_common::backtrace::__rust_begin_short_backtrace::haeb71db878654b8a
[INFO] [stdout]   22:     0x563cb071e859 - std::rt::lang_start::{{closure}}::h3fc7e49d09688110
[INFO] [stdout]   23:     0x563cb0739f61 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h37600b1e5eea4ecd
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:284:13
[INFO] [stdout]   24:     0x563cb0739f61 - std::panicking::try::do_call::hb4bda49fa13a0c2b
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:552:40
[INFO] [stdout]   25:     0x563cb0739f61 - std::panicking::try::h8bbf75149211aaaa
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:516:19
[INFO] [stdout]   26:     0x563cb0739f61 - std::panic::catch_unwind::h8c78ec68ebea34cb
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panic.rs:142:14
[INFO] [stdout]   27:     0x563cb0739f61 - std::rt::lang_start_internal::{{closure}}::hffdf44a19fd9e220
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/rt.rs:148:48
[INFO] [stdout]   28:     0x563cb0739f61 - std::panicking::try::do_call::hcb3194972c74716d
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:552:40
[INFO] [stdout]   29:     0x563cb0739f61 - std::panicking::try::hcdc6892c5f0dba4c
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:516:19
[INFO] [stdout]   30:     0x563cb0739f61 - std::panic::catch_unwind::h4910beb4573f4776
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panic.rs:142:14
[INFO] [stdout]   31:     0x563cb0739f61 - std::rt::lang_start_internal::h6939038e2873596b
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/rt.rs:148:20
[INFO] [stdout]   32:     0x563cb071e837 - std::rt::lang_start::hd109d716ba1a5b01
[INFO] [stdout]   33:     0x563cb07234d5 - main
[INFO] [stdout]   34:     0x7f3a20215d90 - <unknown>
[INFO] [stdout]   35:     0x7f3a20215e40 - __libc_start_main
[INFO] [stdout]   36:     0x563cb071a625 - _start
[INFO] [stdout]   37:                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 0.64s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "f26d9868fe9b5502bba4c8346790c81aac73318d600ac5b798d7c66ae63b280d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f26d9868fe9b5502bba4c8346790c81aac73318d600ac5b798d7c66ae63b280d", kill_on_drop: false }`
[INFO] [stdout] f26d9868fe9b5502bba4c8346790c81aac73318d600ac5b798d7c66ae63b280d
