[INFO] cloning repository https://github.com/mauroalfaro/rust-lambda-benchmark
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mauroalfaro/rust-lambda-benchmark" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmauroalfaro%2Frust-lambda-benchmark", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmauroalfaro%2Frust-lambda-benchmark'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 02a9fde0f2729337c9fcf1eb137e16d46634873f
[INFO] checking mauroalfaro/rust-lambda-benchmark/02a9fde0f2729337c9fcf1eb137e16d46634873f against master#eeb94be79adc9df7a09ad0b2421f16e60e6d932c for pr-152971
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmauroalfaro%2Frust-lambda-benchmark" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mauroalfaro/rust-lambda-benchmark
[INFO] finished tweaking git repo https://github.com/mauroalfaro/rust-lambda-benchmark
[INFO] tweaked toml for git repo https://github.com/mauroalfaro/rust-lambda-benchmark written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mauroalfaro/rust-lambda-benchmark on toolchain eeb94be79adc9df7a09ad0b2421f16e60e6d932c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+eeb94be79adc9df7a09ad0b2421f16e60e6d932c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mauroalfaro/rust-lambda-benchmark 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" "+eeb94be79adc9df7a09ad0b2421f16e60e6d932c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+eeb94be79adc9df7a09ad0b2421f16e60e6d932c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "48381b5ae893970e6ca36fd5ae8d0fcd63e6974fbab790a96869c8ae4c8b4e02", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+eeb94be79adc9df7a09ad0b2421f16e60e6d932c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] [stdout] warning: fields `aws_region` and `cloudwatch_namespace` are never read
[INFO] [stdout]  --> src/config.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Config {
[INFO] [stdout]   |            ------ fields in this struct
[INFO] [stdout] 5 |     pub aws_region: String,
[INFO] [stdout]   |         ^^^^^^^^^^
[INFO] [stdout] 6 |     pub lambda_prefix: String,
[INFO] [stdout] 7 |     pub cloudwatch_namespace: String,
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Config` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `BenchmarkError` is never used
[INFO] [stdout]  --> src/error.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub enum BenchmarkError {
[INFO] [stdout]   |          ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `aws_region` and `cloudwatch_namespace` are never read
[INFO] [stdout]  --> src/config.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Config {
[INFO] [stdout]   |            ------ fields in this struct
[INFO] [stdout] 5 |     pub aws_region: String,
[INFO] [stdout]   |         ^^^^^^^^^^
[INFO] [stdout] 6 |     pub lambda_prefix: String,
[INFO] [stdout] 7 |     pub cloudwatch_namespace: String,
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Config` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `BenchmarkError` is never used
[INFO] [stdout]  --> src/error.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub enum BenchmarkError {
[INFO] [stdout]   |          ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 34s
[INFO] running `Command { std: "docker" "inspect" "fadc7bacf9d41a563b5a8b307ad041845a7f56d898928db39aac018c965791a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fadc7bacf9d41a563b5a8b307ad041845a7f56d898928db39aac018c965791a4", kill_on_drop: false }`
[INFO] [stdout] fadc7bacf9d41a563b5a8b307ad041845a7f56d898928db39aac018c965791a4