[INFO] cloning repository https://github.com/qwerty32123/HuffmanDecoder
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[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4c1c31d256445abedcd56af25988f60fbf75c8a8
[INFO] building qwerty32123/HuffmanDecoder against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqwerty32123%2FHuffmanDecoder" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
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[INFO] [stderr] done.
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[INFO] finished tweaking git repo https://github.com/qwerty32123/HuffmanDecoder
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[INFO] [stderr]    Compiling HuffmanDecoder v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `shm_fd` is never read
[INFO] [stdout]   --> src/memory/server.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct SharedMemoryServer {
[INFO] [stdout]    |            ------------------ field in this struct
[INFO] [stdout] 27 |     #[cfg(unix)]
[INFO] [stdout] 28 |     shm_fd: std::fs::File,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `CacheExpired` is never constructed
[INFO] [stdout]   --> src/data/cache.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub enum CacheError {
[INFO] [stdout]    |          ---------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 14 |     CacheExpired,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `CacheError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `cache_duration` is never read
[INFO] [stdout]   --> src/data/cache.rs:49:5
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub struct CacheManager {
[INFO] [stdout]    |            ------------ field in this struct
[INFO] [stdout] 49 |     cache_duration: u64,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `save_cache` is never used
[INFO] [stdout]   --> src/data/cache.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 52 | impl CacheManager {
[INFO] [stdout]    | ----------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 67 |     fn save_cache(&self, data: &One, filename: &str) -> Result<(), CacheError> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3m 42s
[INFO] running `Command { std: "docker" "inspect" "91e62b5cac3f4057b8167a9c4f50afd9181bb0a6c1f8bd1700dc0bbeea495d34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91e62b5cac3f4057b8167a9c4f50afd9181bb0a6c1f8bd1700dc0bbeea495d34", kill_on_drop: false }`
[INFO] [stdout] 91e62b5cac3f4057b8167a9c4f50afd9181bb0a6c1f8bd1700dc0bbeea495d34
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ddb6775c083455774f831e2165bfa7916fa0c99cec74c6cd6ec15ac277bf2a22
[INFO] running `Command { std: "docker" "start" "-a" "ddb6775c083455774f831e2165bfa7916fa0c99cec74c6cd6ec15ac277bf2a22", kill_on_drop: false }`
[INFO] [stderr]    Compiling HuffmanDecoder v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `shm_fd` is never read
[INFO] [stdout]   --> src/memory/server.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct SharedMemoryServer {
[INFO] [stdout]    |            ------------------ field in this struct
[INFO] [stdout] 27 |     #[cfg(unix)]
[INFO] [stdout] 28 |     shm_fd: std::fs::File,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `CacheExpired` is never constructed
[INFO] [stdout]   --> src/data/cache.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub enum CacheError {
[INFO] [stdout]    |          ---------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 14 |     CacheExpired,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `CacheError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `cache_duration` is never read
[INFO] [stdout]   --> src/data/cache.rs:49:5
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub struct CacheManager {
[INFO] [stdout]    |            ------------ field in this struct
[INFO] [stdout] 49 |     cache_duration: u64,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `save_cache` is never used
[INFO] [stdout]   --> src/data/cache.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 52 | impl CacheManager {
[INFO] [stdout]    | ----------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 67 |     fn save_cache(&self, data: &One, filename: &str) -> Result<(), CacheError> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.18s
[INFO] running `Command { std: "docker" "inspect" "ddb6775c083455774f831e2165bfa7916fa0c99cec74c6cd6ec15ac277bf2a22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ddb6775c083455774f831e2165bfa7916fa0c99cec74c6cd6ec15ac277bf2a22", kill_on_drop: false }`
[INFO] [stdout] ddb6775c083455774f831e2165bfa7916fa0c99cec74c6cd6ec15ac277bf2a22