[INFO] updating cached repository https://github.com/zacharyhamm/stupid_hash
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 704d7ecfb9b0f62b4158b8b36db26146bb12b716
[INFO] checking zacharyhamm/stupid_hash against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzacharyhamm%2Fstupid_hash" "/workspace/builds/worker-8/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zacharyhamm/stupid_hash on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/zacharyhamm/stupid_hash
[INFO] finished tweaking git repo https://github.com/zacharyhamm/stupid_hash
[INFO] tweaked toml for git repo https://github.com/zacharyhamm/stupid_hash written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/zacharyhamm/stupid_hash already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /workspace/builds/worker-8/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "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" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "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] 6b57fff6e8448519ecc1ff667486c49c6e2f50d6c89cad91d2c094a642c6089b
[INFO] running `"docker" "start" "-a" "6b57fff6e8448519ecc1ff667486c49c6e2f50d6c89cad91d2c094a642c6089b"`
[INFO] [stderr]     Checking stupid_hash v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/hash.rs:23:13
[INFO] [stderr]    |
[INFO] [stderr] 23 |         for i in 0..NHASH {
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/hash.rs:23:13
[INFO] [stderr]    |
[INFO] [stderr] 23 |         for i in 0..NHASH {
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `NHASH`
[INFO] [stderr]  --> src/hash.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | const NHASH: usize = 1024;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `MULTIPLIER`
[INFO] [stderr]  --> src/hash.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | const MULTIPLIER: usize = 31;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `table`
[INFO] [stderr]   --> src/hash.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     table: Vec<Vec<NameVal<T>>>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `bits`
[INFO] [stderr]   --> src/hash.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     bits: usize,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `split_bucket`
[INFO] [stderr]   --> src/hash.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     split_bucket: usize,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/hash.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     fn new() -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `len`
[INFO] [stderr]   --> src/hash.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     fn len(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `hash`
[INFO] [stderr]   --> src/hash.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     fn hash(&self, name: &str) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `lookup`
[INFO] [stderr]   --> src/hash.rs:57:5
[INFO] [stderr]    |
[INFO] [stderr] 57 |     fn lookup(&self, name: &str) -> Option<&T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `upsert`
[INFO] [stderr]   --> src/hash.rs:76:5
[INFO] [stderr]    |
[INFO] [stderr] 76 |     fn upsert(&mut self, name: &str, value: T) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `split`
[INFO] [stderr]    --> src/hash.rs:104:5
[INFO] [stderr]     |
[INFO] [stderr] 104 |     fn split(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `remove`
[INFO] [stderr]    --> src/hash.rs:121:5
[INFO] [stderr]     |
[INFO] [stderr] 121 |     fn remove(&mut self, name: &str) -> Option<T> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.89s
[INFO] running `"docker" "inspect" "6b57fff6e8448519ecc1ff667486c49c6e2f50d6c89cad91d2c094a642c6089b"`
[INFO] running `"docker" "rm" "-f" "6b57fff6e8448519ecc1ff667486c49c6e2f50d6c89cad91d2c094a642c6089b"`
[INFO] [stdout] 6b57fff6e8448519ecc1ff667486c49c6e2f50d6c89cad91d2c094a642c6089b