[INFO] cloning repository https://github.com/kintrix007/rust-hashmap
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kintrix007/rust-hashmap" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkintrix007%2Frust-hashmap", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkintrix007%2Frust-hashmap'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 13422ec30d8e1b714fb6e8d3e9a2ea1159394b9c
[INFO] checking kintrix007/rust-hashmap/13422ec30d8e1b714fb6e8d3e9a2ea1159394b9c against 3d50c25bc66853bf0ad205529d0f305a1d841b5e for pr-159598
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkintrix007%2Frust-hashmap" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/kintrix007/rust-hashmap
[INFO] finished tweaking git repo https://github.com/kintrix007/rust-hashmap
[INFO] tweaked toml for git repo https://github.com/kintrix007/rust-hashmap written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/kintrix007/rust-hashmap on toolchain 3d50c25bc66853bf0ad205529d0f305a1d841b5e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3d50c25bc66853bf0ad205529d0f305a1d841b5e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/kintrix007/rust-hashmap 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" "+3d50c25bc66853bf0ad205529d0f305a1d841b5e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:00c5645b54fe3ce5dae1417175e3c7fb6a6646c021d554ecd63a097b8b9f3602" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] fa17ad6569871a9571f47603fcb1405b8bd9575fbad5394fa59aea11ec077ba3
[INFO] running `Command { std: "docker" "start" "fa17ad6569871a9571f47603fcb1405b8bd9575fbad5394fa59aea11ec077ba3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fa17ad6569871a9571f47603fcb1405b8bd9575fbad5394fa59aea11ec077ba3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "fa17ad6569871a9571f47603fcb1405b8bd9575fbad5394fa59aea11ec077ba3" "/opt/rustwide/cargo-home/bin/cargo" "+3d50c25bc66853bf0ad205529d0f305a1d841b5e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fa17ad6569871a9571f47603fcb1405b8bd9575fbad5394fa59aea11ec077ba3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "fa17ad6569871a9571f47603fcb1405b8bd9575fbad5394fa59aea11ec077ba3" "/opt/rustwide/cargo-home/bin/cargo" "+3d50c25bc66853bf0ad205529d0f305a1d841b5e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking hashmap v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `len` is never used
[INFO] [stdout]   --> src/hashmap.rs:73:12
[INFO] [stdout]    |
[INFO] [stdout] 61 | impl<K, V> HashMap<K, V> {
[INFO] [stdout]    | ------------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 73 |     pub fn len(&self) -> usize {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get_mut` and `rehash` are never used
[INFO] [stdout]    --> src/hashmap.rs:136:12
[INFO] [stdout]     |
[INFO] [stdout]  96 | impl<K: PartialEq + Hash + Clone, V: Clone> HashMap<K, V> {
[INFO] [stdout]     | --------------------------------------------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 136 |     pub fn get_mut(&mut self, key: &K) -> Option<&mut V> {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 194 |     pub fn rehash(&mut self, _hasher: DefaultHasher) {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/hashmap.rs:78:17
[INFO] [stdout]    |
[INFO] [stdout] 78 |     pub fn iter(&self) -> HashMapIterator<K, V> {
[INFO] [stdout]    |                 ^^^^^     ^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 78 |     pub fn iter(&self) -> HashMapIterator<'_, K, V> {
[INFO] [stdout]    |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/hashmap.rs:78:17
[INFO] [stdout]    |
[INFO] [stdout] 78 |     pub fn iter(&self) -> HashMapIterator<K, V> {
[INFO] [stdout]    |                 ^^^^^     ^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 78 |     pub fn iter(&self) -> HashMapIterator<'_, K, V> {
[INFO] [stdout]    |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `Command { std: "docker" "inspect" "fa17ad6569871a9571f47603fcb1405b8bd9575fbad5394fa59aea11ec077ba3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa17ad6569871a9571f47603fcb1405b8bd9575fbad5394fa59aea11ec077ba3", kill_on_drop: false }`
[INFO] [stdout] fa17ad6569871a9571f47603fcb1405b8bd9575fbad5394fa59aea11ec077ba3
