[INFO] cloning repository https://github.com/Narendra500/walrus
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Narendra500/walrus" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNarendra500%2Fwalrus", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNarendra500%2Fwalrus'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cc444c6e78e90bca3ddf5c10c8ebdf50448855ec
[INFO] checking Narendra500/walrus against 52995a223f2919dd3e2e427231db90a257350ded for pr-129249-4
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNarendra500%2Fwalrus" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-7-tc2/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/Narendra500/walrus
[INFO] finished tweaking git repo https://github.com/Narendra500/walrus
[INFO] tweaked toml for git repo https://github.com/Narendra500/walrus written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Narendra500/walrus on toolchain 52995a223f2919dd3e2e427231db90a257350ded
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+52995a223f2919dd3e2e427231db90a257350ded" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Narendra500/walrus 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" "+52995a223f2919dd3e2e427231db90a257350ded" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] d58c38b9d679b0228d91f09ad00e724ea73b2afcfc5fc1e687de8379726f1f97
[INFO] running `Command { std: "docker" "start" "d58c38b9d679b0228d91f09ad00e724ea73b2afcfc5fc1e687de8379726f1f97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d58c38b9d679b0228d91f09ad00e724ea73b2afcfc5fc1e687de8379726f1f97", 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" "d58c38b9d679b0228d91f09ad00e724ea73b2afcfc5fc1e687de8379726f1f97" "/opt/rustwide/cargo-home/bin/cargo" "+52995a223f2919dd3e2e427231db90a257350ded" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d58c38b9d679b0228d91f09ad00e724ea73b2afcfc5fc1e687de8379726f1f97", 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" "d58c38b9d679b0228d91f09ad00e724ea73b2afcfc5fc1e687de8379726f1f97" "/opt/rustwide/cargo-home/bin/cargo" "+52995a223f2919dd3e2e427231db90a257350ded" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] Checking smallvec v1.15.2
[INFO] [stderr] Checking futures-sink v0.3.32
[INFO] [stderr] Checking futures-core v0.3.32
[INFO] [stderr] Compiling fs_extra v1.3.0
[INFO] [stderr] Compiling cc v1.2.65
[INFO] [stderr] Compiling zerocopy v0.8.52
[INFO] [stderr] Checking clap_builder v4.6.0
[INFO] [stderr] Checking getrandom v0.4.3
[INFO] [stderr] Checking mio v1.2.1
[INFO] [stderr] Compiling clap_derive v4.6.1
[INFO] [stderr] Checking fast-float v0.2.0
[INFO] [stderr] Checking futures-channel v0.3.32
[INFO] [stderr] Checking rand v0.10.1
[INFO] [stderr] Checking futures-util v0.3.32
[INFO] [stderr] Checking parking_lot_core v0.9.12
[INFO] [stderr] Checking parking_lot v0.12.5
[INFO] [stderr] Checking dashmap v6.2.1
[INFO] [stderr] Checking tokio v1.52.3
[INFO] [stderr] Compiling jemalloc-sys v0.3.2
[INFO] [stderr] Checking clap v4.6.1
[INFO] [stderr] Checking ahash v0.8.12
[INFO] [stderr] Checking futures-executor v0.3.32
[INFO] [stderr] Checking futures v0.3.32
[INFO] [stderr] Checking jemallocator v0.3.2
[INFO] [stderr] Checking walrus v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `pop_back` is never used
[INFO] [stdout] --> src/db.rs:237:19
[INFO] [stdout] |
[INFO] [stdout] 98 | impl Db {
[INFO] [stdout] | ------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 237 | pub(crate) fn pop_back(&self, key: &Bytes) -> Result