[INFO] cloning repository https://github.com/xyzzyz/rzlib
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xyzzyz/rzlib" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxyzzyz%2Frzlib", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxyzzyz%2Frzlib'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 30874b37def7c4cdbcce1fa6c12546e286e17b4d
[INFO] checking xyzzyz/rzlib against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxyzzyz%2Frzlib" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/xyzzyz/rzlib on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/xyzzyz/rzlib
[INFO] finished tweaking git repo https://github.com/xyzzyz/rzlib
[INFO] tweaked toml for git repo https://github.com/xyzzyz/rzlib written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/xyzzyz/rzlib 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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_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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 526b0864c4476c1e6dd60446b47380af4d689aba491a69fd79418b03ecaa2196
[INFO] running `Command { std: "docker" "start" "-a" "526b0864c4476c1e6dd60446b47380af4d689aba491a69fd79418b03ecaa2196", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "526b0864c4476c1e6dd60446b47380af4d689aba491a69fd79418b03ecaa2196", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "526b0864c4476c1e6dd60446b47380af4d689aba491a69fd79418b03ecaa2196", kill_on_drop: false }`
[INFO] [stdout] 526b0864c4476c1e6dd60446b47380af4d689aba491a69fd79418b03ecaa2196
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 54c73553a0abaf5141d75ccf93718ab2b947666a813fec79d73c6600e4eb6314
[INFO] running `Command { std: "docker" "start" "-a" "54c73553a0abaf5141d75ccf93718ab2b947666a813fec79d73c6600e4eb6314", kill_on_drop: false }`
[INFO] [stderr]     Checking rzlib v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/rzlibreader.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `File` and `read`
[INFO] [stdout]  --> src/rzlibreader.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fs::{read, File};
[INFO] [stdout]   |               ^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/rzlibreader.rs:4:30
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{BufRead, Read, Write};
[INFO] [stdout]   |                              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `fmt` and `result`
[INFO] [stdout]  --> src/rzlibreader.rs:5:16
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::{cmp, fmt, io, mem, result};
[INFO] [stdout]   |                ^^^           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `log::debug`
[INFO] [stdout]  --> src/rzlibreader.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use log::debug;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Write`
[INFO] [stdout]  --> src/lookbackbuffer.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::Write;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/rzlibreader.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `File` and `read`
[INFO] [stdout]  --> src/rzlibreader.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fs::{read, File};
[INFO] [stdout]   |               ^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/rzlibreader.rs:4:30
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{BufRead, Read, Write};
[INFO] [stdout]   |                              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `fmt` and `result`
[INFO] [stdout]  --> src/rzlibreader.rs:5:16
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::{cmp, fmt, io, mem, result};
[INFO] [stdout]   |                ^^^           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `log::debug`
[INFO] [stdout]  --> src/rzlibreader.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use log::debug;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Write`
[INFO] [stdout]  --> src/lookbackbuffer.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::Write;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bytes_read`
[INFO] [stdout]   --> src/rzlibreader.rs:69:13
[INFO] [stdout]    |
[INFO] [stdout] 69 |         let bytes_read = self.reader.read_until(0, &mut buf)?;
[INFO] [stdout]    |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes_read`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ftext`
[INFO] [stdout]   --> src/rzlibreader.rs:99:13
[INFO] [stdout]    |
[INFO] [stdout] 99 |         let ftext = flg & 1 == 1;
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_ftext`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mtime`
[INFO] [stdout]    --> src/rzlibreader.rs:114:13
[INFO] [stdout]     |
[INFO] [stdout] 114 |         let mtime = self.reader.read_u32()?;
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_mtime`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `xfl`
[INFO] [stdout]    --> src/rzlibreader.rs:117:13
[INFO] [stdout]     |
[INFO] [stdout] 117 |         let xfl = self.reader.read_u8()?;
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_xfl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `os`
[INFO] [stdout]    --> src/rzlibreader.rs:120:13
[INFO] [stdout]     |
[INFO] [stdout] 120 |         let os = self.reader.read_u8()?;
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_os`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `extra`
[INFO] [stdout]    --> src/rzlibreader.rs:129:17
[INFO] [stdout]     |
[INFO] [stdout] 129 |             let extra = match String::from_utf8(fextra_buf) {
[INFO] [stdout]     |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_extra`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `file_name`
[INFO] [stdout]    --> src/rzlibreader.rs:137:17
[INFO] [stdout]     |
[INFO] [stdout] 137 |             let file_name = self.read_cstring()?;
[INFO] [stdout]     |                 ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_file_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `comment`
[INFO] [stdout]    --> src/rzlibreader.rs:142:17
[INFO] [stdout]     |
[INFO] [stdout] 142 |             let comment = self.read_cstring()?;
[INFO] [stdout]     |                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_comment`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `crc16`
[INFO] [stdout]    --> src/rzlibreader.rs:149:17
[INFO] [stdout]     |
[INFO] [stdout] 149 |             let crc16 = u16::from_le_bytes(crc16_buf);
[INFO] [stdout]     |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_crc16`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `crc32`
[INFO] [stdout]    --> src/rzlibreader.rs:158:13
[INFO] [stdout]     |
[INFO] [stdout] 158 |         let crc32 = self.reader.read_u32()?;
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_crc32`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `isize`
[INFO] [stdout]    --> src/rzlibreader.rs:160:13
[INFO] [stdout]     |
[INFO] [stdout] 160 |         let isize = self.reader.read_u32()?;
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_isize`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/rzlibreader.rs:232:14
[INFO] [stdout]     |
[INFO] [stdout] 232 |         for (i, l) in clen_lengths.iter().enumerate() {
[INFO] [stdout]     |              ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `l`
[INFO] [stdout]    --> src/rzlibreader.rs:232:17
[INFO] [stdout]     |
[INFO] [stdout] 232 |         for (i, l) in clen_lengths.iter().enumerate() {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_l`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/rzlibreader.rs:279:14
[INFO] [stdout]     |
[INFO] [stdout] 279 |         for (i, l) in all_lengths.iter().enumerate() {
[INFO] [stdout]     |              ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `l`
[INFO] [stdout]    --> src/rzlibreader.rs:279:17
[INFO] [stdout]     |
[INFO] [stdout] 279 |         for (i, l) in all_lengths.iter().enumerate() {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_l`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bytes_read`
[INFO] [stdout]   --> src/rzlibreader.rs:69:13
[INFO] [stdout]    |
[INFO] [stdout] 69 |         let bytes_read = self.reader.read_until(0, &mut buf)?;
[INFO] [stdout]    |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes_read`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ftext`
[INFO] [stdout]   --> src/rzlibreader.rs:99:13
[INFO] [stdout]    |
[INFO] [stdout] 99 |         let ftext = flg & 1 == 1;
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_ftext`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mtime`
[INFO] [stdout]    --> src/rzlibreader.rs:114:13
[INFO] [stdout]     |
[INFO] [stdout] 114 |         let mtime = self.reader.read_u32()?;
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_mtime`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `xfl`
[INFO] [stdout]    --> src/rzlibreader.rs:117:13
[INFO] [stdout]     |
[INFO] [stdout] 117 |         let xfl = self.reader.read_u8()?;
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_xfl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `os`
[INFO] [stdout]    --> src/rzlibreader.rs:120:13
[INFO] [stdout]     |
[INFO] [stdout] 120 |         let os = self.reader.read_u8()?;
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_os`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `extra`
[INFO] [stdout]    --> src/rzlibreader.rs:129:17
[INFO] [stdout]     |
[INFO] [stdout] 129 |             let extra = match String::from_utf8(fextra_buf) {
[INFO] [stdout]     |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_extra`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `file_name`
[INFO] [stdout]    --> src/rzlibreader.rs:137:17
[INFO] [stdout]     |
[INFO] [stdout] 137 |             let file_name = self.read_cstring()?;
[INFO] [stdout]     |                 ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_file_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `comment`
[INFO] [stdout]    --> src/rzlibreader.rs:142:17
[INFO] [stdout]     |
[INFO] [stdout] 142 |             let comment = self.read_cstring()?;
[INFO] [stdout]     |                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_comment`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `crc16`
[INFO] [stdout]    --> src/rzlibreader.rs:149:17
[INFO] [stdout]     |
[INFO] [stdout] 149 |             let crc16 = u16::from_le_bytes(crc16_buf);
[INFO] [stdout]     |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_crc16`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `crc32`
[INFO] [stdout]    --> src/rzlibreader.rs:158:13
[INFO] [stdout]     |
[INFO] [stdout] 158 |         let crc32 = self.reader.read_u32()?;
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_crc32`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `isize`
[INFO] [stdout]    --> src/rzlibreader.rs:160:13
[INFO] [stdout]     |
[INFO] [stdout] 160 |         let isize = self.reader.read_u32()?;
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_isize`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/rzlibreader.rs:232:14
[INFO] [stdout]     |
[INFO] [stdout] 232 |         for (i, l) in clen_lengths.iter().enumerate() {
[INFO] [stdout]     |              ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `l`
[INFO] [stdout]    --> src/rzlibreader.rs:232:17
[INFO] [stdout]     |
[INFO] [stdout] 232 |         for (i, l) in clen_lengths.iter().enumerate() {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_l`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/rzlibreader.rs:279:14
[INFO] [stdout]     |
[INFO] [stdout] 279 |         for (i, l) in all_lengths.iter().enumerate() {
[INFO] [stdout]     |              ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `l`
[INFO] [stdout]    --> src/rzlibreader.rs:279:17
[INFO] [stdout]     |
[INFO] [stdout] 279 |         for (i, l) in all_lengths.iter().enumerate() {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_l`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Item` is never used
[INFO] [stdout]   --> src/rzlibreader.rs:44:6
[INFO] [stdout]    |
[INFO] [stdout] 44 | enum Item {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 22 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Item` is never used
[INFO] [stdout]   --> src/rzlibreader.rs:44:6
[INFO] [stdout]    |
[INFO] [stdout] 44 | enum Item {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 22 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/rzlibreader.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `File` and `read`
[INFO] [stdout]  --> src/rzlibreader.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fs::{read, File};
[INFO] [stdout]   |               ^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/rzlibreader.rs:4:30
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{BufRead, Read, Write};
[INFO] [stdout]   |                              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `fmt` and `result`
[INFO] [stdout]  --> src/rzlibreader.rs:5:16
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::{cmp, fmt, io, mem, result};
[INFO] [stdout]   |                ^^^           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `log::debug`
[INFO] [stdout]  --> src/rzlibreader.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use log::debug;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Write`
[INFO] [stdout]  --> src/lookbackbuffer.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::Write;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Read` and `Write`
[INFO] [stdout]  --> src/main.rs:8:15
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::io::{Read, Write};
[INFO] [stdout]   |               ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/rzlibreader.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `File` and `read`
[INFO] [stdout]  --> src/rzlibreader.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fs::{read, File};
[INFO] [stdout]   |               ^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/rzlibreader.rs:4:30
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{BufRead, Read, Write};
[INFO] [stdout]   |                              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `fmt` and `result`
[INFO] [stdout]  --> src/rzlibreader.rs:5:16
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::{cmp, fmt, io, mem, result};
[INFO] [stdout]   |                ^^^           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `log::debug`
[INFO] [stdout]  --> src/rzlibreader.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use log::debug;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Write`
[INFO] [stdout]  --> src/lookbackbuffer.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::Write;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Read` and `Write`
[INFO] [stdout]  --> src/main.rs:8:15
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::io::{Read, Write};
[INFO] [stdout]   |               ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bytes_read`
[INFO] [stdout]   --> src/rzlibreader.rs:69:13
[INFO] [stdout]    |
[INFO] [stdout] 69 |         let bytes_read = self.reader.read_until(0, &mut buf)?;
[INFO] [stdout]    |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes_read`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ftext`
[INFO] [stdout]   --> src/rzlibreader.rs:99:13
[INFO] [stdout]    |
[INFO] [stdout] 99 |         let ftext = flg & 1 == 1;
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_ftext`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mtime`
[INFO] [stdout]    --> src/rzlibreader.rs:114:13
[INFO] [stdout]     |
[INFO] [stdout] 114 |         let mtime = self.reader.read_u32()?;
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_mtime`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `xfl`
[INFO] [stdout]    --> src/rzlibreader.rs:117:13
[INFO] [stdout]     |
[INFO] [stdout] 117 |         let xfl = self.reader.read_u8()?;
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_xfl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `os`
[INFO] [stdout]    --> src/rzlibreader.rs:120:13
[INFO] [stdout]     |
[INFO] [stdout] 120 |         let os = self.reader.read_u8()?;
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_os`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `extra`
[INFO] [stdout]    --> src/rzlibreader.rs:129:17
[INFO] [stdout]     |
[INFO] [stdout] 129 |             let extra = match String::from_utf8(fextra_buf) {
[INFO] [stdout]     |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_extra`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `file_name`
[INFO] [stdout]    --> src/rzlibreader.rs:137:17
[INFO] [stdout]     |
[INFO] [stdout] 137 |             let file_name = self.read_cstring()?;
[INFO] [stdout]     |                 ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_file_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `comment`
[INFO] [stdout]    --> src/rzlibreader.rs:142:17
[INFO] [stdout]     |
[INFO] [stdout] 142 |             let comment = self.read_cstring()?;
[INFO] [stdout]     |                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_comment`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `crc16`
[INFO] [stdout]    --> src/rzlibreader.rs:149:17
[INFO] [stdout]     |
[INFO] [stdout] 149 |             let crc16 = u16::from_le_bytes(crc16_buf);
[INFO] [stdout]     |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_crc16`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `crc32`
[INFO] [stdout]    --> src/rzlibreader.rs:158:13
[INFO] [stdout]     |
[INFO] [stdout] 158 |         let crc32 = self.reader.read_u32()?;
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_crc32`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `isize`
[INFO] [stdout]    --> src/rzlibreader.rs:160:13
[INFO] [stdout]     |
[INFO] [stdout] 160 |         let isize = self.reader.read_u32()?;
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_isize`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/rzlibreader.rs:232:14
[INFO] [stdout]     |
[INFO] [stdout] 232 |         for (i, l) in clen_lengths.iter().enumerate() {
[INFO] [stdout]     |              ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `l`
[INFO] [stdout]    --> src/rzlibreader.rs:232:17
[INFO] [stdout]     |
[INFO] [stdout] 232 |         for (i, l) in clen_lengths.iter().enumerate() {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_l`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/rzlibreader.rs:279:14
[INFO] [stdout]     |
[INFO] [stdout] 279 |         for (i, l) in all_lengths.iter().enumerate() {
[INFO] [stdout]     |              ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `l`
[INFO] [stdout]    --> src/rzlibreader.rs:279:17
[INFO] [stdout]     |
[INFO] [stdout] 279 |         for (i, l) in all_lengths.iter().enumerate() {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_l`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bytes_read`
[INFO] [stdout]   --> src/rzlibreader.rs:69:13
[INFO] [stdout]    |
[INFO] [stdout] 69 |         let bytes_read = self.reader.read_until(0, &mut buf)?;
[INFO] [stdout]    |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes_read`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ftext`
[INFO] [stdout]   --> src/rzlibreader.rs:99:13
[INFO] [stdout]    |
[INFO] [stdout] 99 |         let ftext = flg & 1 == 1;
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_ftext`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mtime`
[INFO] [stdout]    --> src/rzlibreader.rs:114:13
[INFO] [stdout]     |
[INFO] [stdout] 114 |         let mtime = self.reader.read_u32()?;
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_mtime`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `xfl`
[INFO] [stdout]    --> src/rzlibreader.rs:117:13
[INFO] [stdout]     |
[INFO] [stdout] 117 |         let xfl = self.reader.read_u8()?;
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_xfl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `os`
[INFO] [stdout]    --> src/rzlibreader.rs:120:13
[INFO] [stdout]     |
[INFO] [stdout] 120 |         let os = self.reader.read_u8()?;
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_os`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `extra`
[INFO] [stdout]    --> src/rzlibreader.rs:129:17
[INFO] [stdout]     |
[INFO] [stdout] 129 |             let extra = match String::from_utf8(fextra_buf) {
[INFO] [stdout]     |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_extra`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `file_name`
[INFO] [stdout]    --> src/rzlibreader.rs:137:17
[INFO] [stdout]     |
[INFO] [stdout] 137 |             let file_name = self.read_cstring()?;
[INFO] [stdout]     |                 ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_file_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `comment`
[INFO] [stdout]    --> src/rzlibreader.rs:142:17
[INFO] [stdout]     |
[INFO] [stdout] 142 |             let comment = self.read_cstring()?;
[INFO] [stdout]     |                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_comment`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `crc16`
[INFO] [stdout]    --> src/rzlibreader.rs:149:17
[INFO] [stdout]     |
[INFO] [stdout] 149 |             let crc16 = u16::from_le_bytes(crc16_buf);
[INFO] [stdout]     |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_crc16`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `crc32`
[INFO] [stdout]    --> src/rzlibreader.rs:158:13
[INFO] [stdout]     |
[INFO] [stdout] 158 |         let crc32 = self.reader.read_u32()?;
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_crc32`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `isize`
[INFO] [stdout]    --> src/rzlibreader.rs:160:13
[INFO] [stdout]     |
[INFO] [stdout] 160 |         let isize = self.reader.read_u32()?;
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_isize`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/rzlibreader.rs:232:14
[INFO] [stdout]     |
[INFO] [stdout] 232 |         for (i, l) in clen_lengths.iter().enumerate() {
[INFO] [stdout]     |              ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `l`
[INFO] [stdout]    --> src/rzlibreader.rs:232:17
[INFO] [stdout]     |
[INFO] [stdout] 232 |         for (i, l) in clen_lengths.iter().enumerate() {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_l`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/rzlibreader.rs:279:14
[INFO] [stdout]     |
[INFO] [stdout] 279 |         for (i, l) in all_lengths.iter().enumerate() {
[INFO] [stdout]     |              ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `l`
[INFO] [stdout]    --> src/rzlibreader.rs:279:17
[INFO] [stdout]     |
[INFO] [stdout] 279 |         for (i, l) in all_lengths.iter().enumerate() {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_l`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Item` is never used
[INFO] [stdout]   --> src/rzlibreader.rs:44:6
[INFO] [stdout]    |
[INFO] [stdout] 44 | enum Item {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `dump_impl` and `dump` are never used
[INFO] [stdout]    --> src/huffman.rs:163:8
[INFO] [stdout]     |
[INFO] [stdout] 67  | impl<R: Debug + Clone> HuffmanTree<R> {
[INFO] [stdout]     | ------------------------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 163 |     fn dump_impl(&self, path: &Codeword) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 181 |     pub fn dump(&self) {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 24 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Item` is never used
[INFO] [stdout]   --> src/rzlibreader.rs:44:6
[INFO] [stdout]    |
[INFO] [stdout] 44 | enum Item {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `dump_impl` and `dump` are never used
[INFO] [stdout]    --> src/huffman.rs:163:8
[INFO] [stdout]     |
[INFO] [stdout] 67  | impl<R: Debug + Clone> HuffmanTree<R> {
[INFO] [stdout]     | ------------------------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 163 |     fn dump_impl(&self, path: &Codeword) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 181 |     pub fn dump(&self) {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 24 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.37s
[INFO] running `Command { std: "docker" "inspect" "54c73553a0abaf5141d75ccf93718ab2b947666a813fec79d73c6600e4eb6314", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54c73553a0abaf5141d75ccf93718ab2b947666a813fec79d73c6600e4eb6314", kill_on_drop: false }`
[INFO] [stdout] 54c73553a0abaf5141d75ccf93718ab2b947666a813fec79d73c6600e4eb6314