[INFO] cloning repository https://github.com/jrenner/cats_n_lizards
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jrenner/cats_n_lizards" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjrenner%2Fcats_n_lizards", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjrenner%2Fcats_n_lizards'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a4f6b49095ab47aca15b7374f7306fd3d8aed8b3
[INFO] checking jrenner/cats_n_lizards against master#5337252b9952fdd9482ed6a4add17254e5bd2c40 for pr-138785
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjrenner%2Fcats_n_lizards" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jrenner/cats_n_lizards on toolchain 5337252b9952fdd9482ed6a4add17254e5bd2c40
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5337252b9952fdd9482ed6a4add17254e5bd2c40" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jrenner/cats_n_lizards
[INFO] finished tweaking git repo https://github.com/jrenner/cats_n_lizards
[INFO] tweaked toml for git repo https://github.com/jrenner/cats_n_lizards written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/jrenner/cats_n_lizards 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" "+5337252b9952fdd9482ed6a4add17254e5bd2c40" "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-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+5337252b9952fdd9482ed6a4add17254e5bd2c40" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9097357dc8ddbc57f8aeecf8faa3d855bdbfa09ce20fdabf8b210b3f63c6ffdd
[INFO] running `Command { std: "docker" "start" "-a" "9097357dc8ddbc57f8aeecf8faa3d855bdbfa09ce20fdabf8b210b3f63c6ffdd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9097357dc8ddbc57f8aeecf8faa3d855bdbfa09ce20fdabf8b210b3f63c6ffdd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9097357dc8ddbc57f8aeecf8faa3d855bdbfa09ce20fdabf8b210b3f63c6ffdd", kill_on_drop: false }`
[INFO] [stdout] 9097357dc8ddbc57f8aeecf8faa3d855bdbfa09ce20fdabf8b210b3f63c6ffdd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+5337252b9952fdd9482ed6a4add17254e5bd2c40" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e65f1fb386c11ba2027d519796f5a47fd29da00b155dcf7125a8c923b5632c69
[INFO] running `Command { std: "docker" "start" "-a" "e65f1fb386c11ba2027d519796f5a47fd29da00b155dcf7125a8c923b5632c69", kill_on_drop: false }`
[INFO] [stderr]     Checking cats_n_lizards_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `cats_n_lizards` is never used
[INFO] [stdout]   --> src/main.rs:57:4
[INFO] [stdout]    |
[INFO] [stdout] 57 | fn cats_n_lizards(animals: Vec<HashMap<&str, i32>>) -> Option<HashMap<&str, i32>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `chatgpt_solution` is never used
[INFO] [stdout]   --> src/main.rs:92:4
[INFO] [stdout]    |
[INFO] [stdout] 92 | fn chatgpt_solution(dicts: Vec<HashMap<&str, i32>>) -> HashMap<&str, i32> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]   --> src/main.rs:98:31
[INFO] [stdout]    |
[INFO] [stdout] 98 |           *key_count.entry(key.clone()).or_insert(0) += 1;
[INFO] [stdout]    |                               ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]   --> src/main.rs:99:31
[INFO] [stdout]    |
[INFO] [stdout] 99 |           *value_sum.entry(key.clone()).or_insert(0) += value;
[INFO] [stdout]    |                               ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> src/main.rs:109:32
[INFO] [stdout]     |
[INFO] [stdout] 109 |               result.insert(key.clone(), sum);
[INFO] [stdout]     |                                ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]   --> src/main.rs:98:31
[INFO] [stdout]    |
[INFO] [stdout] 98 |           *key_count.entry(key.clone()).or_insert(0) += 1;
[INFO] [stdout]    |                               ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]   --> src/main.rs:99:31
[INFO] [stdout]    |
[INFO] [stdout] 99 |           *value_sum.entry(key.clone()).or_insert(0) += value;
[INFO] [stdout]    |                               ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
[INFO] [stdout]    --> src/main.rs:109:32
[INFO] [stdout]     |
[INFO] [stdout] 109 |               result.insert(key.clone(), sum);
[INFO] [stdout]     |                                ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] running `Command { std: "docker" "inspect" "e65f1fb386c11ba2027d519796f5a47fd29da00b155dcf7125a8c923b5632c69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e65f1fb386c11ba2027d519796f5a47fd29da00b155dcf7125a8c923b5632c69", kill_on_drop: false }`
[INFO] [stdout] e65f1fb386c11ba2027d519796f5a47fd29da00b155dcf7125a8c923b5632c69