[INFO] crate basic_tree 0.2.5 is already in cache
[INFO] checking basic_tree-0.2.5 against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] extracting crate basic_tree 0.2.5 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate basic_tree 0.2.5 on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate basic_tree 0.2.5
[INFO] finished tweaking crates.io crate basic_tree 0.2.5
[INFO] tweaked toml for crates.io crate basic_tree 0.2.5 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 606c9807e97dd906d6d9951d4d822c24c103857a31861a2010832202149428de
[INFO] running `"docker" "start" "-a" "606c9807e97dd906d6d9951d4d822c24c103857a31861a2010832202149428de"`
[INFO] [stderr]     Checking basic_tree v0.2.5 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `std::cmp::Eq`
[INFO] [stderr]  --> src/trie/word.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::cmp::Eq;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::hash::Hash`
[INFO] [stderr]  --> src/trie/word.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::hash::Hash;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cmp::Eq`
[INFO] [stderr]  --> src/trie/word.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::cmp::Eq;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::hash::Hash`
[INFO] [stderr]  --> src/trie/word.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::hash::Hash;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/trie/word.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     fn new() -> WordTrie {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `insert_words`
[INFO] [stderr]   --> src/trie/word.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 |     fn insert_words(&self, words: &str, target: &str) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `split_words`
[INFO] [stderr]   --> src/trie/word.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     fn split_words(words: &str) -> Vec<String> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `insert`
[INFO] [stderr]   --> src/trie/word.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 44 |     fn insert(&self, words: &[String], target: String) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_leaf`
[INFO] [stderr]   --> src/trie/word.rs:52:5
[INFO] [stderr]    |
[INFO] [stderr] 52 |     fn get_leaf(&self, words: &[String]) -> Leaf<String> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_leaf`
[INFO] [stderr]   --> src/trie/word.rs:52:5
[INFO] [stderr]    |
[INFO] [stderr] 52 |     fn get_leaf(&self, words: &[String]) -> Leaf<String> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `"docker" "inspect" "606c9807e97dd906d6d9951d4d822c24c103857a31861a2010832202149428de"`
[INFO] running `"docker" "rm" "-f" "606c9807e97dd906d6d9951d4d822c24c103857a31861a2010832202149428de"`
[INFO] [stdout] 606c9807e97dd906d6d9951d4d822c24c103857a31861a2010832202149428de