[INFO] cloning repository https://github.com/favalosdev/two-three-trees
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/favalosdev/two-three-trees" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffavalosdev%2Ftwo-three-trees", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffavalosdev%2Ftwo-three-trees'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c95726c15b3278cd03127e250f2b4a794052d8f1
[INFO] checking favalosdev/two-three-trees against try#47eaa3b85fbe5fa2b3b731b5fecdc5954cbfc268 for pr-149058
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffavalosdev%2Ftwo-three-trees" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/favalosdev/two-three-trees
[INFO] finished tweaking git repo https://github.com/favalosdev/two-three-trees
[INFO] tweaked toml for git repo https://github.com/favalosdev/two-three-trees written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/favalosdev/two-three-trees on toolchain 47eaa3b85fbe5fa2b3b731b5fecdc5954cbfc268
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+47eaa3b85fbe5fa2b3b731b5fecdc5954cbfc268" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/favalosdev/two-three-trees already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+47eaa3b85fbe5fa2b3b731b5fecdc5954cbfc268" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+47eaa3b85fbe5fa2b3b731b5fecdc5954cbfc268" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0a3f87d6e62082a8b1e165af9321fc529199db3f4adf7b75d18cc1cbc6e72b02
[INFO] running `Command { std: "docker" "start" "-a" "0a3f87d6e62082a8b1e165af9321fc529199db3f4adf7b75d18cc1cbc6e72b02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0a3f87d6e62082a8b1e165af9321fc529199db3f4adf7b75d18cc1cbc6e72b02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a3f87d6e62082a8b1e165af9321fc529199db3f4adf7b75d18cc1cbc6e72b02", kill_on_drop: false }`
[INFO] [stdout] 0a3f87d6e62082a8b1e165af9321fc529199db3f4adf7b75d18cc1cbc6e72b02
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+47eaa3b85fbe5fa2b3b731b5fecdc5954cbfc268" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2db496687984d3b1c18d8e8611e92b47ec53fa13f3112331b40b4e6cebaae3b8
[INFO] running `Command { std: "docker" "start" "-a" "2db496687984d3b1c18d8e8611e92b47ec53fa13f3112331b40b4e6cebaae3b8", kill_on_drop: false }`
[INFO] [stderr]     Checking two_three_trees v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: enum `Comparison` is never used
[INFO] [stdout]  --> tests/util/tree.rs:5:6
[INFO] [stdout]   |
[INFO] [stdout] 5 | enum Comparison {
[INFO] [stdout]   |      ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_rightmost` is never used
[INFO] [stdout]   --> tests/util/tree.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn get_rightmost<T: Ord>(node: &TwoThreeTree<T>) -> Option<&T> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_leftmost` is never used
[INFO] [stdout]   --> tests/util/tree.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn get_leftmost<T: Ord>(node: &TwoThreeTree<T>) -> Option<&T> {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `check` is never used
[INFO] [stdout]   --> tests/util/tree.rs:46:4
[INFO] [stdout]    |
[INFO] [stdout] 46 | fn check<T: Ord>(val: &T, pivot: &T, c: Comparison) -> bool {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `vwo_aux_simple` is never used
[INFO] [stdout]   --> tests/util/tree.rs:53:4
[INFO] [stdout]    |
[INFO] [stdout] 53 | fn vwo_aux_simple<T: Ord>(node: &TwoThreeTree<T>, parent: &T, mode: Comparison) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `vwo_aux_interval` is never used
[INFO] [stdout]   --> tests/util/tree.rs:72:4
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn vwo_aux_interval<T: Ord>(node: &TwoThreeTree<T>, start: &T, end: &T) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `verify_well_ordering` is never used
[INFO] [stdout]   --> tests/util/tree.rs:94:8
[INFO] [stdout]    |
[INFO] [stdout] 94 | pub fn verify_well_ordering<T: Ord>(node: &TwoThreeTree<T>) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `vpli_aux` is never used
[INFO] [stdout]    --> tests/util/tree.rs:116:4
[INFO] [stdout]     |
[INFO] [stdout] 116 | fn vpli_aux<T: Ord>(node: &TwoThreeTree<T>, height: usize, acc: usize) -> bool {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `verify_path_length_invariance` is never used
[INFO] [stdout]    --> tests/util/tree.rs:131:8
[INFO] [stdout]     |
[INFO] [stdout] 131 | pub fn verify_path_length_invariance<T: Ord>(node: &TwoThreeTree<T>) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "2db496687984d3b1c18d8e8611e92b47ec53fa13f3112331b40b4e6cebaae3b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2db496687984d3b1c18d8e8611e92b47ec53fa13f3112331b40b4e6cebaae3b8", kill_on_drop: false }`
[INFO] [stdout] 2db496687984d3b1c18d8e8611e92b47ec53fa13f3112331b40b4e6cebaae3b8