[INFO] fetching crate reservoir-sampling 0.5.1...
[INFO] checking reservoir-sampling-0.5.1 against try#24cd45d7714ba43afd4b8e62fb677b069b21c4a5 for pr-129543
[INFO] extracting crate reservoir-sampling 0.5.1 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate reservoir-sampling 0.5.1 on toolchain 24cd45d7714ba43afd4b8e62fb677b069b21c4a5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+24cd45d7714ba43afd4b8e62fb677b069b21c4a5" "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-4-tc2/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" "+24cd45d7714ba43afd4b8e62fb677b069b21c4a5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "+24cd45d7714ba43afd4b8e62fb677b069b21c4a5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 204caa17971ef33183f235fa3a8832a18e919a5cf7aa8e7efdd83e8be1cad7d3
[INFO] running `Command { std: "docker" "start" "-a" "204caa17971ef33183f235fa3a8832a18e919a5cf7aa8e7efdd83e8be1cad7d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "204caa17971ef33183f235fa3a8832a18e919a5cf7aa8e7efdd83e8be1cad7d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "204caa17971ef33183f235fa3a8832a18e919a5cf7aa8e7efdd83e8be1cad7d3", kill_on_drop: false }`
[INFO] [stdout] 204caa17971ef33183f235fa3a8832a18e919a5cf7aa8e7efdd83e8be1cad7d3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "+24cd45d7714ba43afd4b8e62fb677b069b21c4a5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] befb33f570b2a320eab34beff73d051cb64d6f63530c352ab1cbe57f85d6243c
[INFO] running `Command { std: "docker" "start" "-a" "befb33f570b2a320eab34beff73d051cb64d6f63530c352ab1cbe57f85d6243c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[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 2.61s
[INFO] running `Command { std: "docker" "inspect" "befb33f570b2a320eab34beff73d051cb64d6f63530c352ab1cbe57f85d6243c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "befb33f570b2a320eab34beff73d051cb64d6f63530c352ab1cbe57f85d6243c", kill_on_drop: false }`
[INFO] [stdout] befb33f570b2a320eab34beff73d051cb64d6f63530c352ab1cbe57f85d6243c