[INFO] cloning repository https://github.com/malwoden/sloppy-compressor
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/malwoden/sloppy-compressor" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmalwoden%2Fsloppy-compressor", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmalwoden%2Fsloppy-compressor'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8196c06cb1b82a007ba3e2d4f498e5001e6b4746
[INFO] checking malwoden/sloppy-compressor against master#31ee872db5aae4750e3da1ca4ed1523c4356947f for pr-78461
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmalwoden%2Fsloppy-compressor" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/malwoden/sloppy-compressor on toolchain 31ee872db5aae4750e3da1ca4ed1523c4356947f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/malwoden/sloppy-compressor
[INFO] finished tweaking git repo https://github.com/malwoden/sloppy-compressor
[INFO] tweaked toml for git repo https://github.com/malwoden/sloppy-compressor written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/malwoden/sloppy-compressor already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b0c281e1f837f12808495f3e9c484396471efac8045b3d28ce4f6877949921e9
[INFO] running `Command { std: "docker" "start" "-a" "b0c281e1f837f12808495f3e9c484396471efac8045b3d28ce4f6877949921e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b0c281e1f837f12808495f3e9c484396471efac8045b3d28ce4f6877949921e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0c281e1f837f12808495f3e9c484396471efac8045b3d28ce4f6877949921e9", kill_on_drop: false }`
[INFO] [stdout] b0c281e1f837f12808495f3e9c484396471efac8045b3d28ce4f6877949921e9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 65952ff7998d201621c6f375ab584748810eef1349621dbd3d843d9cf16d560d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "65952ff7998d201621c6f375ab584748810eef1349621dbd3d843d9cf16d560d", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.45
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking md5 v0.7.0
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]     Checking serde v1.0.117
[INFO] [stderr]     Checking bincode v1.3.1
[INFO] [stderr]     Checking sloppy-compressor v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `compress`
[INFO] [stdout]   --> src/lz77.rs:97:8
[INFO] [stdout]    |
[INFO] [stdout] 97 | pub fn compress(file: &mut File) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `SEARCH_WINDOW_SIZE`
[INFO] [stdout]   --> src/lz77.rs:94:1
[INFO] [stdout]    |
[INFO] [stdout] 94 | const SEARCH_WINDOW_SIZE: usize = 4096;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `PREFIX_WINDOW_SIZE`
[INFO] [stdout]   --> src/lz77.rs:95:1
[INFO] [stdout]    |
[INFO] [stdout] 95 | const PREFIX_WINDOW_SIZE: usize = 4096;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `compress`
[INFO] [stdout]   --> src/lz77.rs:97:8
[INFO] [stdout]    |
[INFO] [stdout] 97 | pub fn compress(file: &mut File) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `build_lz77_node_list`
[INFO] [stdout]    --> src/lz77.rs:112:4
[INFO] [stdout]     |
[INFO] [stdout] 112 | fn build_lz77_node_list(to_compress: &[u8]) -> Vec<Node> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `calculate_node`
[INFO] [stdout]    --> src/lz77.rs:142:4
[INFO] [stdout]     |
[INFO] [stdout] 142 | fn calculate_node(c: u8, left_slice: &[u8], right_slice: &[u8]) -> Node {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `find_length_of_series_match`
[INFO] [stdout]    --> src/lz77.rs:178:4
[INFO] [stdout]     |
[INFO] [stdout] 178 | fn find_length_of_series_match(left: &[u8], right: &[u8]) -> usize {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `decompress`
[INFO] [stdout]    --> src/lz77.rs:189:4
[INFO] [stdout]     |
[INFO] [stdout] 189 | fn decompress<W: Write>(nodes: Vec<Node>, writer: &mut W, search_window_size: usize) {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/lz77.rs:218:8
[INFO] [stdout]     |
[INFO] [stdout] 218 |     fn new(limit: usize) -> WindowByteContainer<T> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `push`
[INFO] [stdout]    --> src/lz77.rs:225:8
[INFO] [stdout]     |
[INFO] [stdout] 225 |     fn push(&mut self, element: T) {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `push_all`
[INFO] [stdout]    --> src/lz77.rs:232:8
[INFO] [stdout]     |
[INFO] [stdout] 232 |     fn push_all(&mut self, elements: &[T]) {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.30s
[INFO] running `Command { std: "docker" "inspect" "65952ff7998d201621c6f375ab584748810eef1349621dbd3d843d9cf16d560d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65952ff7998d201621c6f375ab584748810eef1349621dbd3d843d9cf16d560d", kill_on_drop: false }`
[INFO] [stdout] 65952ff7998d201621c6f375ab584748810eef1349621dbd3d843d9cf16d560d