[INFO] cloning repository https://github.com/NattapongSiri/vec_optimization_test
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/NattapongSiri/vec_optimization_test" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNattapongSiri%2Fvec_optimization_test", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNattapongSiri%2Fvec_optimization_test'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 380fe272ce55b649b013afd2e750bbaaf7ac9e3c
[INFO] checking NattapongSiri/vec_optimization_test/380fe272ce55b649b013afd2e750bbaaf7ac9e3c against master#f167efad2f51088d86180ee89177b3d7c9e7c2f5 for pr-129543
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNattapongSiri%2Fvec_optimization_test" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/NattapongSiri/vec_optimization_test on toolchain f167efad2f51088d86180ee89177b3d7c9e7c2f5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f167efad2f51088d86180ee89177b3d7c9e7c2f5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/NattapongSiri/vec_optimization_test
[INFO] finished tweaking git repo https://github.com/NattapongSiri/vec_optimization_test
[INFO] tweaked toml for git repo https://github.com/NattapongSiri/vec_optimization_test written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/NattapongSiri/vec_optimization_test 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" "+f167efad2f51088d86180ee89177b3d7c9e7c2f5" "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/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+f167efad2f51088d86180ee89177b3d7c9e7c2f5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 31d2de0a21950b6576301f08aeef61e6d9e9831a8e8795c6b1301f52395025fc
[INFO] running `Command { std: "docker" "start" "-a" "31d2de0a21950b6576301f08aeef61e6d9e9831a8e8795c6b1301f52395025fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "31d2de0a21950b6576301f08aeef61e6d9e9831a8e8795c6b1301f52395025fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31d2de0a21950b6576301f08aeef61e6d9e9831a8e8795c6b1301f52395025fc", kill_on_drop: false }`
[INFO] [stdout] 31d2de0a21950b6576301f08aeef61e6d9e9831a8e8795c6b1301f52395025fc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+f167efad2f51088d86180ee89177b3d7c9e7c2f5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4989297f1b7f7b8c658963a480f44ff60d91167b89b1d68fb93ce91b6358aff2
[INFO] running `Command { std: "docker" "start" "-a" "4989297f1b7f7b8c658963a480f44ff60d91167b89b1d68fb93ce91b6358aff2", kill_on_drop: false }`
[INFO] [stderr]     Checking vec_experiment v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/main.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl<K, V> VecPair<K, V> {
[INFO] [stdout]    | ------------------------ associated function in this implementation
[INFO] [stdout] 18 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/main.rs:110:12
[INFO] [stdout]     |
[INFO] [stdout] 109 | impl<K, V> TupleVec<K, V> {
[INFO] [stdout]     | ------------------------- associated function in this implementation
[INFO] [stdout] 110 |     pub fn new() -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/main.rs:188:12
[INFO] [stdout]     |
[INFO] [stdout] 187 | impl<T> FlattenVec<T> {
[INFO] [stdout]     | --------------------- associated function in this implementation
[INFO] [stdout] 188 |     pub fn new() -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/main.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl<K, V> VecPair<K, V> {
[INFO] [stdout]    | ------------------------ associated function in this implementation
[INFO] [stdout] 18 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/main.rs:110:12
[INFO] [stdout]     |
[INFO] [stdout] 109 | impl<K, V> TupleVec<K, V> {
[INFO] [stdout]     | ------------------------- associated function in this implementation
[INFO] [stdout] 110 |     pub fn new() -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/main.rs:188:12
[INFO] [stdout]     |
[INFO] [stdout] 187 | impl<T> FlattenVec<T> {
[INFO] [stdout]     | --------------------- associated function in this implementation
[INFO] [stdout] 188 |     pub fn new() -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `Command { std: "docker" "inspect" "4989297f1b7f7b8c658963a480f44ff60d91167b89b1d68fb93ce91b6358aff2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4989297f1b7f7b8c658963a480f44ff60d91167b89b1d68fb93ce91b6358aff2", kill_on_drop: false }`
[INFO] [stdout] 4989297f1b7f7b8c658963a480f44ff60d91167b89b1d68fb93ce91b6358aff2