[INFO] cloning repository https://github.com/diogotr7/ballsort-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/diogotr7/ballsort-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdiogotr7%2Fballsort-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdiogotr7%2Fballsort-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b5f50aa70fad7e10bc169f3a6e4f599347f751f1
[INFO] checking diogotr7/ballsort-rs against try#f17e3a389e192f83fe27a581774a9d1dbb8e565b for pr-137394
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdiogotr7%2Fballsort-rs" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/diogotr7/ballsort-rs on toolchain f17e3a389e192f83fe27a581774a9d1dbb8e565b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f17e3a389e192f83fe27a581774a9d1dbb8e565b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/diogotr7/ballsort-rs
[INFO] finished tweaking git repo https://github.com/diogotr7/ballsort-rs
[INFO] tweaked toml for git repo https://github.com/diogotr7/ballsort-rs written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/diogotr7/ballsort-rs 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" "+f17e3a389e192f83fe27a581774a9d1dbb8e565b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+f17e3a389e192f83fe27a581774a9d1dbb8e565b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 185c6ff639665870e855af1882e0caa9eb8b9eede5617288dd125cd2ca43c892
[INFO] running `Command { std: "docker" "start" "-a" "185c6ff639665870e855af1882e0caa9eb8b9eede5617288dd125cd2ca43c892", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "185c6ff639665870e855af1882e0caa9eb8b9eede5617288dd125cd2ca43c892", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "185c6ff639665870e855af1882e0caa9eb8b9eede5617288dd125cd2ca43c892", kill_on_drop: false }`
[INFO] [stdout] 185c6ff639665870e855af1882e0caa9eb8b9eede5617288dd125cd2ca43c892
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+f17e3a389e192f83fe27a581774a9d1dbb8e565b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 10913f6e3696ee3954d5bcc7432e73fa438c7bc5f4dad927f0fe8d10f3b5b03d
[INFO] running `Command { std: "docker" "start" "-a" "10913f6e3696ee3954d5bcc7432e73fa438c7bc5f4dad927f0fe8d10f3b5b03d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.150
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking ballsort-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `solved` is never read
[INFO] [stdout]  --> src/solution.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Solution {
[INFO] [stdout]   |            -------- field in this struct
[INFO] [stdout] 5 |     pub solved: bool,
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Solution` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `solved` is never read
[INFO] [stdout]  --> src/solution.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Solution {
[INFO] [stdout]   |            -------- field in this struct
[INFO] [stdout] 5 |     pub solved: bool,
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Solution` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.34s
[INFO] running `Command { std: "docker" "inspect" "10913f6e3696ee3954d5bcc7432e73fa438c7bc5f4dad927f0fe8d10f3b5b03d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10913f6e3696ee3954d5bcc7432e73fa438c7bc5f4dad927f0fe8d10f3b5b03d", kill_on_drop: false }`
[INFO] [stdout] 10913f6e3696ee3954d5bcc7432e73fa438c7bc5f4dad927f0fe8d10f3b5b03d