[INFO] fetching crate reservoir-sampling 0.5.1...
[INFO] checking reservoir-sampling-0.5.1 against master#5ad98b4026d5172f27615b105658bc8bfd677be8 for pr-129422
[INFO] extracting crate reservoir-sampling 0.5.1 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate reservoir-sampling 0.5.1 on toolchain 5ad98b4026d5172f27615b105658bc8bfd677be8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5ad98b4026d5172f27615b105658bc8bfd677be8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate reservoir-sampling 0.5.1
[INFO] finished tweaking crates.io crate reservoir-sampling 0.5.1
[INFO] tweaked toml for crates.io crate reservoir-sampling 0.5.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate reservoir-sampling 0.5.1 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" "+5ad98b4026d5172f27615b105658bc8bfd677be8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.73
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.73
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.73
[INFO] [stderr]   Downloaded proc-macro2 v1.0.26
[INFO] [stderr]   Downloaded js-sys v0.3.50
[INFO] [stderr]   Downloaded syn v1.0.69
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.73
[INFO] [stderr]   Downloaded bumpalo v3.6.1
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.73
[INFO] [stderr]   Downloaded libc v0.2.93
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+5ad98b4026d5172f27615b105658bc8bfd677be8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d96d651ceaf331dd6d3017f55e8ac02278f4dd1932d5b6f63bbfad9299fa9ee4
[INFO] running `Command { std: "docker" "start" "-a" "d96d651ceaf331dd6d3017f55e8ac02278f4dd1932d5b6f63bbfad9299fa9ee4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d96d651ceaf331dd6d3017f55e8ac02278f4dd1932d5b6f63bbfad9299fa9ee4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d96d651ceaf331dd6d3017f55e8ac02278f4dd1932d5b6f63bbfad9299fa9ee4", kill_on_drop: false }`
[INFO] [stdout] d96d651ceaf331dd6d3017f55e8ac02278f4dd1932d5b6f63bbfad9299fa9ee4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+5ad98b4026d5172f27615b105658bc8bfd677be8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e165df171e4333e6c40b9de084fdeacbc9017186eae4c39cce960e79977c602c
[INFO] running `Command { std: "docker" "start" "-a" "e165df171e4333e6c40b9de084fdeacbc9017186eae4c39cce960e79977c602c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking reservoir-sampling v0.5.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `mean` is never used
[INFO] [stdout]  --> tests/common/mod.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn mean(arr: &[usize]) -> usize {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> tests/common/mod.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn run (max_tests: usize, f: fn(Range<usize>, &mut [usize]) ) {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.26s
[INFO] running `Command { std: "docker" "inspect" "e165df171e4333e6c40b9de084fdeacbc9017186eae4c39cce960e79977c602c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e165df171e4333e6c40b9de084fdeacbc9017186eae4c39cce960e79977c602c", kill_on_drop: false }`
[INFO] [stdout] e165df171e4333e6c40b9de084fdeacbc9017186eae4c39cce960e79977c602c