[INFO] fetching crate llrb 0.0.1...
[INFO] testing llrb-0.0.1 against 1.76.0 for beta-1.77-1
[INFO] extracting crate llrb 0.0.1 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate llrb 0.0.1 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 llrb 0.0.1
[INFO] finished tweaking crates.io crate llrb 0.0.1
[INFO] tweaked toml for crates.io crate llrb 0.0.1 written to /workspace/builds/worker-3-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-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 955562ef84b347718a3faa93f477da11ab341736cdf33212dae7299a5cee2030
[INFO] running `Command { std: "docker" "start" "-a" "955562ef84b347718a3faa93f477da11ab341736cdf33212dae7299a5cee2030", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "955562ef84b347718a3faa93f477da11ab341736cdf33212dae7299a5cee2030", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "955562ef84b347718a3faa93f477da11ab341736cdf33212dae7299a5cee2030", kill_on_drop: false }`
[INFO] [stdout] 955562ef84b347718a3faa93f477da11ab341736cdf33212dae7299a5cee2030
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] bbde27948d647fb9d25db9019c4357e3ba25804c62dd369a82cb3f1cc745a212
[INFO] running `Command { std: "docker" "start" "-a" "bbde27948d647fb9d25db9019c4357e3ba25804c62dd369a82cb3f1cc745a212", kill_on_drop: false }`
[INFO] [stderr]    Compiling llrb v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `right_is_red`
[INFO] [stdout]    --> src/lib.rs:288:13
[INFO] [stdout]     |
[INFO] [stdout] 288 |         let right_is_red = is_red(&self.left);
[INFO] [stdout]     |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_right_is_red`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]    --> src/lib.rs:289:43
[INFO] [stdout]     |
[INFO] [stdout] 289 |         if let Some((ref mut key, ref mut val)) = self.kv {
[INFO] [stdout]     |                                           ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other`
[INFO] [stdout]    --> src/lib.rs:335:30
[INFO] [stdout]     |
[INFO] [stdout] 335 |     pub fn append(&mut self, other: &mut Self) {}
[INFO] [stdout]     |                              ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `move_red_right`, `move_red_left`, and `min` are never used
[INFO] [stdout]    --> src/lib.rs:92:8
[INFO] [stdout]     |
[INFO] [stdout] 49  | impl<K: Ord, V> LLRB<K, V> {
[INFO] [stdout]     | -------------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 92  |     fn move_red_right(&mut self) {}
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 93  |
[INFO] [stdout] 94  |     fn move_red_left(&mut self) {}
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 303 |     fn min(&self) -> &LLRB<K, V> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.13s
[INFO] running `Command { std: "docker" "inspect" "bbde27948d647fb9d25db9019c4357e3ba25804c62dd369a82cb3f1cc745a212", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bbde27948d647fb9d25db9019c4357e3ba25804c62dd369a82cb3f1cc745a212", kill_on_drop: false }`
[INFO] [stdout] bbde27948d647fb9d25db9019c4357e3ba25804c62dd369a82cb3f1cc745a212
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 49ee672d1b317b56f6d6d2673d34313704c57bf710b40211705d3cedc97522df
[INFO] running `Command { std: "docker" "start" "-a" "49ee672d1b317b56f6d6d2673d34313704c57bf710b40211705d3cedc97522df", kill_on_drop: false }`
[INFO] [stderr]    Compiling llrb v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `right_is_red`
[INFO] [stdout]    --> src/lib.rs:288:13
[INFO] [stdout]     |
[INFO] [stdout] 288 |         let right_is_red = is_red(&self.left);
[INFO] [stdout]     |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_right_is_red`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]    --> src/lib.rs:289:43
[INFO] [stdout]     |
[INFO] [stdout] 289 |         if let Some((ref mut key, ref mut val)) = self.kv {
[INFO] [stdout]     |                                           ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other`
[INFO] [stdout]    --> src/lib.rs:335:30
[INFO] [stdout]     |
[INFO] [stdout] 335 |     pub fn append(&mut self, other: &mut Self) {}
[INFO] [stdout]     |                              ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `move_red_right`, `move_red_left`, and `min` are never used
[INFO] [stdout]    --> src/lib.rs:92:8
[INFO] [stdout]     |
[INFO] [stdout] 49  | impl<K: Ord, V> LLRB<K, V> {
[INFO] [stdout]     | -------------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 92  |     fn move_red_right(&mut self) {}
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 93  |
[INFO] [stdout] 94  |     fn move_red_left(&mut self) {}
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 303 |     fn min(&self) -> &LLRB<K, V> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right_is_red`
[INFO] [stdout]    --> src/lib.rs:288:13
[INFO] [stdout]     |
[INFO] [stdout] 288 |         let right_is_red = is_red(&self.left);
[INFO] [stdout]     |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_right_is_red`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]    --> src/lib.rs:289:43
[INFO] [stdout]     |
[INFO] [stdout] 289 |         if let Some((ref mut key, ref mut val)) = self.kv {
[INFO] [stdout]     |                                           ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other`
[INFO] [stdout]    --> src/lib.rs:335:30
[INFO] [stdout]     |
[INFO] [stdout] 335 |     pub fn append(&mut self, other: &mut Self) {}
[INFO] [stdout]     |                              ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `move_red_right`, `move_red_left`, and `min` are never used
[INFO] [stdout]    --> src/lib.rs:92:8
[INFO] [stdout]     |
[INFO] [stdout] 49  | impl<K: Ord, V> LLRB<K, V> {
[INFO] [stdout]     | -------------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 92  |     fn move_red_right(&mut self) {}
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 93  |
[INFO] [stdout] 94  |     fn move_red_left(&mut self) {}
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 303 |     fn min(&self) -> &LLRB<K, V> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "49ee672d1b317b56f6d6d2673d34313704c57bf710b40211705d3cedc97522df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49ee672d1b317b56f6d6d2673d34313704c57bf710b40211705d3cedc97522df", kill_on_drop: false }`
[INFO] [stdout] 49ee672d1b317b56f6d6d2673d34313704c57bf710b40211705d3cedc97522df
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 7bd86dcff46e1e83a4398f2e2249eff9883e4d61d1865f777ebe51543ba7a89f
[INFO] running `Command { std: "docker" "start" "-a" "7bd86dcff46e1e83a4398f2e2249eff9883e4d61d1865f777ebe51543ba7a89f", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `right_is_red`
[INFO] [stderr]    --> src/lib.rs:288:13
[INFO] [stderr]     |
[INFO] [stderr] 288 |         let right_is_red = is_red(&self.left);
[INFO] [stderr]     |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_right_is_red`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `val`
[INFO] [stderr]    --> src/lib.rs:289:43
[INFO] [stderr]     |
[INFO] [stderr] 289 |         if let Some((ref mut key, ref mut val)) = self.kv {
[INFO] [stderr]     |                                           ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `other`
[INFO] [stderr]    --> src/lib.rs:335:30
[INFO] [stderr]     |
[INFO] [stderr] 335 |     pub fn append(&mut self, other: &mut Self) {}
[INFO] [stderr]     |                              ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stderr] 
[INFO] [stderr] warning: methods `move_red_right`, `move_red_left`, and `min` are never used
[INFO] [stderr]    --> src/lib.rs:92:8
[INFO] [stderr]     |
[INFO] [stderr] 49  | impl<K: Ord, V> LLRB<K, V> {
[INFO] [stderr]     | -------------------------- methods in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 92  |     fn move_red_right(&mut self) {}
[INFO] [stderr]     |        ^^^^^^^^^^^^^^
[INFO] [stderr] 93  |
[INFO] [stderr] 94  |     fn move_red_left(&mut self) {}
[INFO] [stderr]     |        ^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 303 |     fn min(&self) -> &LLRB<K, V> {
[INFO] [stderr]     |        ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `llrb` (lib) generated 4 warnings (run `cargo fix --lib -p llrb` to apply 3 suggestions)
[INFO] [stderr] warning: `llrb` (lib test) generated 4 warnings (4 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/llrb-5bd72e0cd60d4b1d)
[INFO] [stderr]    Doc-tests llrb
[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] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test src/lib.rs - LLRB<K,V>::len (line 343) ... ok
[INFO] [stdout] test src/lib.rs - LLRB<K,V>::append (line 311) ... FAILED
[INFO] [stdout] test src/lib.rs - LLRB<K,V>::get (line 116) ... ok
[INFO] [stdout] test src/lib.rs - LLRB<K,V>::get_mut (line 176) ... ok
[INFO] [stdout] test src/lib.rs - LLRB<K,V>::insert (line 221) ... ok
[INFO] [stdout] test src/lib.rs - LLRB<K,V>::contains_key (line 155) ... ok
[INFO] [stdout] test src/lib.rs - LLRB<K,V>::is_empty (line 376) ... ok
[INFO] [stdout] test src/lib.rs - LLRB<K,V>::remove (line 276) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - LLRB<K,V>::append (line 311) stdout ----
[INFO] [stdout] Test executable failed (exit status: 101).
[INFO] [stdout] 
[INFO] [stdout] stderr:
[INFO] [stdout] thread 'main' panicked at src/lib.rs:19:1:
[INFO] [stdout] assertion `left == right` failed
[INFO] [stdout]   left: 3
[INFO] [stdout]  right: 5
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5566ecfccbf6 - 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:     0x5566ecfccbf6 - 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:     0x5566ecfccbf6 - std::sys_common::backtrace::_print_fmt::hc7f3e3b5298b1083
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stdout]    3:     0x5566ecfccbf6 - <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:     0x5566ecfeb620 - core::fmt::rt::Argument::fmt::h76c38a80d925a410
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/fmt/rt.rs:142:9
[INFO] [stdout]    5:     0x5566ecfeb620 - core::fmt::write::h3ed6aeaa977c8e45
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/fmt/mod.rs:1120:17
[INFO] [stdout]    6:     0x5566ecfcb0af - std::io::Write::write_fmt::h78b18af5775fedb5
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/io/mod.rs:1810:15
[INFO] [stdout]    7:     0x5566ecfcc9d4 - std::sys_common::backtrace::_print::h5d645a07e0fcfdbb
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    8:     0x5566ecfcc9d4 - std::sys_common::backtrace::print::h85035a511aafe7a8
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    9:     0x5566ecfcdf37 - std::panicking::default_hook::{{closure}}::hcce8cea212785a25
[INFO] [stdout]   10:     0x5566ecfcdc99 - std::panicking::default_hook::hf5fcb0f213fe709a
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:292:9
[INFO] [stdout]   11:     0x5566ecfce3c8 - std::panicking::rust_panic_with_hook::h095fccf1dc9379ee
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:779:13
[INFO] [stdout]   12:     0x5566ecfce2a2 - std::panicking::begin_panic_handler::{{closure}}::h032ba12139b353db
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:657:13
[INFO] [stdout]   13:     0x5566ecfcd0f6 - 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:     0x5566ecfce000 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:645:5
[INFO] [stdout]   15:     0x5566ecfafdf5 - core::panicking::panic_fmt::h784f20a50eaab275
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panicking.rs:72:14
[INFO] [stdout]   16:     0x5566ecfb00fb - core::panicking::assert_failed_inner::hbf94b40c37b92af0
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panicking.rs:342:17
[INFO] [stdout]   17:     0x5566ecfb0daa - core::panicking::assert_failed::hb57e6308c0e47587
[INFO] [stdout]   18:     0x5566ecfb2130 - rust_out::main::_doctest_main_src_lib_rs_311_0::h587394f723cbad27
[INFO] [stdout]   19:     0x5566ecfb1f26 - rust_out::main::h7d13ed1f0b74fb4f
[INFO] [stdout]   20:     0x5566ecfb0853 - core::ops::function::FnOnce::call_once::h9310bc2590e31970
[INFO] [stdout]   21:     0x5566ecfb05f6 - std::sys_common::backtrace::__rust_begin_short_backtrace::haeb71db878654b8a
[INFO] [stdout]   22:     0x5566ecfb0649 - std::rt::lang_start::{{closure}}::h3fc7e49d09688110
[INFO] [stdout]   23:     0x5566ecfc8ff1 - 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:     0x5566ecfc8ff1 - std::panicking::try::do_call::hb4bda49fa13a0c2b
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:552:40
[INFO] [stdout]   25:     0x5566ecfc8ff1 - std::panicking::try::h8bbf75149211aaaa
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:516:19
[INFO] [stdout]   26:     0x5566ecfc8ff1 - std::panic::catch_unwind::h8c78ec68ebea34cb
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panic.rs:142:14
[INFO] [stdout]   27:     0x5566ecfc8ff1 - std::rt::lang_start_internal::{{closure}}::hffdf44a19fd9e220
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/rt.rs:148:48
[INFO] [stdout]   28:     0x5566ecfc8ff1 - std::panicking::try::do_call::hcb3194972c74716d
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:552:40
[INFO] [stdout]   29:     0x5566ecfc8ff1 - std::panicking::try::hcdc6892c5f0dba4c
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:516:19
[INFO] [stdout]   30:     0x5566ecfc8ff1 - std::panic::catch_unwind::h4910beb4573f4776
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panic.rs:142:14
[INFO] [stdout]   31:     0x5566ecfc8ff1 - std::rt::lang_start_internal::h6939038e2873596b
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/rt.rs:148:20
[INFO] [stdout]   32:     0x5566ecfb0627 - std::rt::lang_start::hd109d716ba1a5b01
[INFO] [stdout]   33:     0x5566ecfb25b5 - main
[INFO] [stdout]   34:     0x7fdf2a05dd90 - <unknown>
[INFO] [stdout]   35:     0x7fdf2a05de40 - __libc_start_main
[INFO] [stdout]   36:     0x5566ecfb0525 - _start
[INFO] [stdout]   37:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - LLRB<K,V>::remove (line 276) stdout ----
[INFO] [stdout] Test executable failed (exit status: 101).
[INFO] [stdout] 
[INFO] [stdout] stderr:
[INFO] [stdout] thread 'main' panicked at src/lib.rs:9:1:
[INFO] [stdout] assertion `left == right` failed
[INFO] [stdout]   left: None
[INFO] [stdout]  right: Some("a")
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x559b6e0dc696 - 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:     0x559b6e0dc696 - 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:     0x559b6e0dc696 - std::sys_common::backtrace::_print_fmt::hc7f3e3b5298b1083
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stdout]    3:     0x559b6e0dc696 - <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:     0x559b6e0fb0c0 - core::fmt::rt::Argument::fmt::h76c38a80d925a410
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/fmt/rt.rs:142:9
[INFO] [stdout]    5:     0x559b6e0fb0c0 - core::fmt::write::h3ed6aeaa977c8e45
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/fmt/mod.rs:1120:17
[INFO] [stdout]    6:     0x559b6e0dab4f - std::io::Write::write_fmt::h78b18af5775fedb5
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/io/mod.rs:1810:15
[INFO] [stdout]    7:     0x559b6e0dc474 - std::sys_common::backtrace::_print::h5d645a07e0fcfdbb
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    8:     0x559b6e0dc474 - std::sys_common::backtrace::print::h85035a511aafe7a8
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    9:     0x559b6e0dd9d7 - std::panicking::default_hook::{{closure}}::hcce8cea212785a25
[INFO] [stdout]   10:     0x559b6e0dd739 - std::panicking::default_hook::hf5fcb0f213fe709a
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:292:9
[INFO] [stdout]   11:     0x559b6e0dde68 - std::panicking::rust_panic_with_hook::h095fccf1dc9379ee
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:779:13
[INFO] [stdout]   12:     0x559b6e0ddd42 - std::panicking::begin_panic_handler::{{closure}}::h032ba12139b353db
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:657:13
[INFO] [stdout]   13:     0x559b6e0dcb96 - 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:     0x559b6e0ddaa0 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:645:5
[INFO] [stdout]   15:     0x559b6e0bfdf5 - core::panicking::panic_fmt::h784f20a50eaab275
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panicking.rs:72:14
[INFO] [stdout]   16:     0x559b6e0c00fb - core::panicking::assert_failed_inner::hbf94b40c37b92af0
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panicking.rs:342:17
[INFO] [stdout]   17:     0x559b6e0c0caa - core::panicking::assert_failed::h841320483a3142e2
[INFO] [stdout]   18:     0x559b6e0c1f47 - rust_out::main::_doctest_main_src_lib_rs_276_0::he24b91d2b5d3d5ef
[INFO] [stdout]   19:     0x559b6e0c1e26 - rust_out::main::h7d13ed1f0b74fb4f
[INFO] [stdout]   20:     0x559b6e0c07f3 - core::ops::function::FnOnce::call_once::h9310bc2590e31970
[INFO] [stdout]   21:     0x559b6e0c05f6 - std::sys_common::backtrace::__rust_begin_short_backtrace::haeb71db878654b8a
[INFO] [stdout]   22:     0x559b6e0c0649 - std::rt::lang_start::{{closure}}::h3fc7e49d09688110
[INFO] [stdout]   23:     0x559b6e0d8a91 - 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:     0x559b6e0d8a91 - std::panicking::try::do_call::hb4bda49fa13a0c2b
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:552:40
[INFO] [stdout]   25:     0x559b6e0d8a91 - std::panicking::try::h8bbf75149211aaaa
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:516:19
[INFO] [stdout]   26:     0x559b6e0d8a91 - std::panic::catch_unwind::h8c78ec68ebea34cb
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panic.rs:142:14
[INFO] [stdout]   27:     0x559b6e0d8a91 - std::rt::lang_start_internal::{{closure}}::hffdf44a19fd9e220
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/rt.rs:148:48
[INFO] [stdout]   28:     0x559b6e0d8a91 - std::panicking::try::do_call::hcb3194972c74716d
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:552:40
[INFO] [stdout]   29:     0x559b6e0d8a91 - std::panicking::try::hcdc6892c5f0dba4c
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:516:19
[INFO] [stdout]   30:     0x559b6e0d8a91 - std::panic::catch_unwind::h4910beb4573f4776
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panic.rs:142:14
[INFO] [stdout]   31:     0x559b6e0d8a91 - std::rt::lang_start_internal::h6939038e2873596b
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/rt.rs:148:20
[INFO] [stdout]   32:     0x559b6e0c0627 - std::rt::lang_start::hd109d716ba1a5b01
[INFO] [stdout]   33:     0x559b6e0c2055 - main
[INFO] [stdout]   34:     0x7fbe764fad90 - <unknown>
[INFO] [stdout]   35:     0x7fbe764fae40 - __libc_start_main
[INFO] [stdout]   36:     0x559b6e0c0525 - _start
[INFO] [stdout]   37:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - LLRB<K,V>::append (line 311)
[INFO] [stdout]     src/lib.rs - LLRB<K,V>::remove (line 276)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 6 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.61s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "7bd86dcff46e1e83a4398f2e2249eff9883e4d61d1865f777ebe51543ba7a89f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7bd86dcff46e1e83a4398f2e2249eff9883e4d61d1865f777ebe51543ba7a89f", kill_on_drop: false }`
[INFO] [stdout] 7bd86dcff46e1e83a4398f2e2249eff9883e4d61d1865f777ebe51543ba7a89f
