[INFO] cloning repository https://github.com/dhrosa/rust-diy-zlib
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dhrosa/rust-diy-zlib" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdhrosa%2Frust-diy-zlib", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdhrosa%2Frust-diy-zlib'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d8113a45a4242b7c24f11af9e64ef710b0705ee0
[INFO] checking dhrosa/rust-diy-zlib against try#0de49ae9e81f9a1e7df6f0783824ce94ed18e8a9 for pr-147185
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdhrosa%2Frust-diy-zlib" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/dhrosa/rust-diy-zlib
[INFO] finished tweaking git repo https://github.com/dhrosa/rust-diy-zlib
[INFO] tweaked toml for git repo https://github.com/dhrosa/rust-diy-zlib written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/dhrosa/rust-diy-zlib on toolchain 0de49ae9e81f9a1e7df6f0783824ce94ed18e8a9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0de49ae9e81f9a1e7df6f0783824ce94ed18e8a9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/dhrosa/rust-diy-zlib 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" "+0de49ae9e81f9a1e7df6f0783824ce94ed18e8a9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+0de49ae9e81f9a1e7df6f0783824ce94ed18e8a9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e36af3baa505866b2ae3cee07db7a3c64c9b56beddd0496ee044869360256c32
[INFO] running `Command { std: "docker" "start" "-a" "e36af3baa505866b2ae3cee07db7a3c64c9b56beddd0496ee044869360256c32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e36af3baa505866b2ae3cee07db7a3c64c9b56beddd0496ee044869360256c32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e36af3baa505866b2ae3cee07db7a3c64c9b56beddd0496ee044869360256c32", kill_on_drop: false }`
[INFO] [stdout] e36af3baa505866b2ae3cee07db7a3c64c9b56beddd0496ee044869360256c32
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+0de49ae9e81f9a1e7df6f0783824ce94ed18e8a9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d4ff8658b37aa5a37efe6438f3c1a84c87f68a16498f8ebba7830206873efc6d
[INFO] running `Command { std: "docker" "start" "-a" "d4ff8658b37aa5a37efe6438f3c1a84c87f68a16498f8ebba7830206873efc6d", kill_on_drop: false }`
[INFO] [stderr]     Checking diy-zlib v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `History` is never constructed
[INFO] [stdout]   --> src/lz77.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct History {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `max_length`, `new`, `len`, `buffer_index`, `append`, and `extend` are never used
[INFO] [stdout]   --> src/lz77.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl History {
[INFO] [stdout]    | ------------ associated items in this implementation
[INFO] [stdout] 18 |     fn max_length(&self) -> usize {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 |     pub fn new(max_length: usize) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 30 |     pub fn len(&self) -> usize {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 35 |     fn buffer_index(&self, index: usize) -> usize {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |     pub fn append(&mut self, byte: u8) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 50 |     pub fn extend(&mut self, bytes: &[u8]) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.19s
[INFO] running `Command { std: "docker" "inspect" "d4ff8658b37aa5a37efe6438f3c1a84c87f68a16498f8ebba7830206873efc6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4ff8658b37aa5a37efe6438f3c1a84c87f68a16498f8ebba7830206873efc6d", kill_on_drop: false }`
[INFO] [stdout] d4ff8658b37aa5a37efe6438f3c1a84c87f68a16498f8ebba7830206873efc6d