[INFO] fetching crate lz4r 1.10.0...
[INFO] checking lz4r-1.10.0 against eca445e5ae4a6679cc27d3a09106ce245e13a5a6 for pr-162478
[INFO] extracting crate lz4r 1.10.0 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate lz4r 1.10.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate lz4r 1.10.0
[INFO] tweaked toml for crates.io crate lz4r 1.10.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate lz4r 1.10.0 on toolchain eca445e5ae4a6679cc27d3a09106ce245e13a5a6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+eca445e5ae4a6679cc27d3a09106ce245e13a5a6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate lz4r 1.10.0 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" "+eca445e5ae4a6679cc27d3a09106ce245e13a5a6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: explicit `package.readme` can be inferred
[INFO] [stderr]   --> Cargo.toml:91:1
[INFO] [stderr]    |
[INFO] [stderr] 91 | readme = "README.md"
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::manual_readme` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.readme`
[INFO] [stderr] warning: `package.homepage` is redundant with `package.repository`
[INFO] [stderr]   --> Cargo.toml:87:12
[INFO] [stderr]    |
[INFO] [stderr] 87 | homepage = "https://github.com/jafreck/Lz4r"
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 92 | repository = "https://github.com/jafreck/Lz4r"
[INFO] [stderr]    |              ---------------------------------
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::redundant_homepage` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.homepage`
[INFO] [stderr] warning: `lz4r` (manifest) generated 2 warnings
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded nix v0.31.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 6562c7aa4b5133b7efd41f3fe79abbb2c56b280800d63d32c42ac51737ffd878
[INFO] running `Command { std: "docker" "start" "6562c7aa4b5133b7efd41f3fe79abbb2c56b280800d63d32c42ac51737ffd878", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6562c7aa4b5133b7efd41f3fe79abbb2c56b280800d63d32c42ac51737ffd878", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "6562c7aa4b5133b7efd41f3fe79abbb2c56b280800d63d32c42ac51737ffd878" "/opt/rustwide/cargo-home/bin/cargo" "+eca445e5ae4a6679cc27d3a09106ce245e13a5a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6562c7aa4b5133b7efd41f3fe79abbb2c56b280800d63d32c42ac51737ffd878", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "6562c7aa4b5133b7efd41f3fe79abbb2c56b280800d63d32c42ac51737ffd878" "/opt/rustwide/cargo-home/bin/cargo" "+eca445e5ae4a6679cc27d3a09106ce245e13a5a6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] warning: explicit `package.readme` can be inferred
[INFO] [stderr]   --> Cargo.toml:91:1
[INFO] [stderr]    |
[INFO] [stderr] 91 | readme = "README.md"
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::manual_readme` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.readme`
[INFO] [stderr] warning: `package.homepage` is redundant with `package.repository`
[INFO] [stderr]   --> Cargo.toml:87:12
[INFO] [stderr]    |
[INFO] [stderr] 87 | homepage = "https://github.com/jafreck/Lz4r"
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 92 | repository = "https://github.com/jafreck/Lz4r"
[INFO] [stderr]    |              ---------------------------------
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::redundant_homepage` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.homepage`
[INFO] [stderr] warning: `lz4r` (manifest) generated 2 warnings
[INFO] [stderr]    Compiling libc v0.2.180
[INFO] [stderr]    Compiling zerocopy v0.8.39
[INFO] [stderr]     Checking clap_lex v1.0.0
[INFO] [stderr]     Checking anstream v0.6.21
[INFO] [stderr]    Compiling nix v0.31.1
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling alloca v0.4.0
[INFO] [stderr]    Compiling rustix v1.1.3
[INFO] [stderr]    Compiling lz4r v1.10.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking regex-automata v0.4.14
[INFO] [stderr]     Checking serde_json v1.0.149
[INFO] [stderr]     Checking xxhash-rust v0.8.15
[INFO] [stderr]     Checking criterion-plot v0.8.2
[INFO] [stderr]     Checking once_cell v1.21.3
[INFO] [stderr]     Checking clap_builder v4.5.60
[INFO] [stderr]     Checking regex v1.12.3
[INFO] [stderr]     Checking filetime v0.2.27
[INFO] [stderr]     Checking num_cpus v1.17.0
[INFO] [stderr]     Checking getrandom v0.4.1
[INFO] [stderr]     Checking page_size v0.6.0
[INFO] [stderr]     Checking tempfile v3.25.0
[INFO] [stderr]    Compiling zerocopy-derive v0.8.39
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling clap_derive v4.5.55
[INFO] [stderr]     Checking clap v4.5.60
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/block/decompress_api.rs:454:13
[INFO] [stdout]     |
[INFO] [stdout] 454 |         let mut tmp_dst = core::slice::from_raw_parts_mut(dst_ptr, max_output);
[INFO] [stdout]     |             ----^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/file.rs:279:31
[INFO] [stdout]     |
[INFO] [stdout] 279 |                 .inspect_err(|e| {
[INFO] [stdout]     |                               ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `start0` is never read
[INFO] [stdout]    --> src/hc/compress_hc.rs:115:33
[INFO] [stdout]     |
[INFO] [stdout] 115 |     let mut start0: *const u8 = core::ptr::null();
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 153 |             start0 = ip;
[INFO] [stdout]     |             ----------- `start0` is overwritten here before the previous value is read
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `m0` is never read
[INFO] [stdout]    --> src/hc/compress_hc.rs:118:18
[INFO] [stdout]     |
[INFO] [stdout] 118 |     let mut m0 = nomatch;
[INFO] [stdout]     |                  ^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 154 |             m0 = m1;
[INFO] [stdout]     |             ------- `m0` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `m1` is never read
[INFO] [stdout]    --> src/hc/compress_hc.rs:119:18
[INFO] [stdout]     |
[INFO] [stdout] 119 |       let mut m1 = nomatch;
[INFO] [stdout]     |                    ^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 140 | /             m1 = insert_and_find_best_match(
[INFO] [stdout] 141 | |                 ctx,
[INFO] [stdout] 142 | |                 ip,
[INFO] [stdout] 143 | |                 matchlimit,
[INFO] [stdout] ...   |
[INFO] [stdout] 146 | |                 dict,
[INFO] [stdout] 147 | |             );
[INFO] [stdout]     | |_____________- `m1` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `m3` is never read
[INFO] [stdout]    --> src/hc/compress_hc.rs:121:18
[INFO] [stdout]     |
[INFO] [stdout] 121 |     let mut m3 = nomatch;
[INFO] [stdout]     |                  ^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 261 |                     m3 = nomatch;
[INFO] [stdout]     |                     ------------ `m3` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `search_state` is never read
[INFO] [stdout]    --> src/hc/compress_hc.rs:228:17
[INFO] [stdout]     |
[INFO] [stdout] 228 |                 search_state = SearchState::S2;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 365 |                 search_state = SearchState::S3;
[INFO] [stdout]     |                 ------------------------------ `search_state` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `retval` is never read
[INFO] [stdout]    --> src/hc/compress_hc.rs:616:27
[INFO] [stdout]     |
[INFO] [stdout] 616 |     let mut retval: i32 = 0;
[INFO] [stdout]     |                           ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 964 |             retval = 0;
[INFO] [stdout]     |             ---------- `retval` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `last_match_pos` is never read
[INFO] [stdout]    --> src/hc/compress_hc.rs:653:41
[INFO] [stdout]     |
[INFO] [stdout] 653 |         let mut last_match_pos: usize = 0;
[INFO] [stdout]     |                                         ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 713 |             last_match_pos = match_ml;
[INFO] [stdout]     |             ------------------------- `last_match_pos` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `match_length` is never read
[INFO] [stdout]    --> src/hc/lz4mid.rs:487:33
[INFO] [stdout]     |
[INFO] [stdout] 487 |     let mut match_length: u32 = 0;
[INFO] [stdout]     |                                 ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 661 |                     match_length = ml;
[INFO] [stdout]     |                     ----------------- `match_length` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `match_distance` is never read
[INFO] [stdout]    --> src/hc/lz4mid.rs:488:35
[INFO] [stdout]     |
[INFO] [stdout] 488 |     let mut match_distance: u32 = 0;
[INFO] [stdout]     |                                   ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 662 |                     match_distance = md;
[INFO] [stdout]     |                     ------------------- `match_distance` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `step` is never read
[INFO] [stdout]    --> src/hc/search.rs:372:37
[INFO] [stdout]     |
[INFO] [stdout] 372 |                 let mut step: i32 = 1;
[INFO] [stdout]     |                                     ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 377 |                     step = accel >> K_TRIGGER;
[INFO] [stdout]     |                     ------------------------- `step` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `dict_content` is never read
[INFO] [stdout]   --> src/frame/cdict.rs:55:16
[INFO] [stdout]    |
[INFO] [stdout] 52 | pub struct Lz4FCDict {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 55 |     pub(crate) dict_content: Vec<u8>,
[INFO] [stdout]    |                ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking half v2.7.1
[INFO] [stderr]     Checking ciborium-ll v0.2.2
[INFO] [stderr]     Checking ciborium v0.2.2
[INFO] [stderr]     Checking criterion v0.8.2
[INFO] [stdout] warning: unexpected `cfg` condition name: `has_sparse_files`
[INFO] [stdout]    --> tests/platform_config.rs:115:14
[INFO] [stdout]     |
[INFO] [stdout] 115 |         cfg!(has_sparse_files),
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: expected names are: `docsrs`, `feature`, and `test` and 34 more
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(has_sparse_files)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(has_sparse_files)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `has_sparse_files`
[INFO] [stdout]    --> tests/platform_config.rs:132:27
[INFO] [stdout]     |
[INFO] [stdout] 132 |     let has_sparse = cfg!(has_sparse_files);
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(has_sparse_files)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(has_sparse_files)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `lz4::block::stream::Lz4Stream`
[INFO] [stdout]   --> tests/block/decompress_core.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use lz4::block::stream::Lz4Stream;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `CParams`
[INFO] [stdout]   --> tests/hc/types.rs:25:84
[INFO] [stdout]    |
[INFO] [stdout] 25 |     mid_hash4_ptr, mid_hash7, mid_hash8_ptr, nb_common_bytes32, read64, read_le64, CParams,
[INFO] [stdout]    |                                                                                    ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]   --> tests/bench/decompress_binding.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::io;
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Write`
[INFO] [stdout]   --> tests/io/api.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 | use std::io::Write;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Write`
[INFO] [stdout]    --> src/io/decompress_frame.rs:332:9
[INFO] [stdout]     |
[INFO] [stdout] 332 |     use std::io::Write;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Write`
[INFO] [stdout]   --> tests/io/compress_mt.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | use std::io::Write;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Write`
[INFO] [stdout]   --> tests/io/decompress_dispatch.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::io::Write;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Write`
[INFO] [stdout]   --> tests/io/decompress_frame.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::io::Write;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> tests/frame/compress.rs:1177:9
[INFO] [stdout]      |
[INFO] [stdout] 1177 |     let mut cctx = Lz4FCCtx::new(LZ4F_VERSION);
[INFO] [stdout]      |         ----^^^^
[INFO] [stdout]      |         |
[INFO] [stdout]      |         help: remove this `mut`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> tests/frame/compress.rs:1180:9
[INFO] [stdout]      |
[INFO] [stdout] 1180 |     let mut dst = vec![0u8; 1024];
[INFO] [stdout]      |         ----^^^
[INFO] [stdout]      |         |
[INFO] [stdout]      |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cctx`
[INFO] [stdout]     --> tests/frame/compress.rs:1177:9
[INFO] [stdout]      |
[INFO] [stdout] 1177 |     let mut cctx = Lz4FCCtx::new(LZ4F_VERSION);
[INFO] [stdout]      |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_cctx`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/hc/encode.rs:159:9
[INFO] [stdout]     |
[INFO] [stdout] 159 |     let mut input = vec![0xBB_u8; lit_len + 32];
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/hc/encode.rs:210:9
[INFO] [stdout]     |
[INFO] [stdout] 210 |     let mut input = vec![0xCC_u8; lit_len + 64];
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/hc/encode.rs:261:9
[INFO] [stdout]     |
[INFO] [stdout] 261 |     let mut input = vec![0xDD_u8; 64];
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/hc/encode.rs:309:9
[INFO] [stdout]     |
[INFO] [stdout] 309 |     let mut input = vec![0xEE_u8; match_len + 64];
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/hc/encode.rs:354:9
[INFO] [stdout]     |
[INFO] [stdout] 354 |     let mut input = vec![0xFF_u8; 64];
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/hc/encode.rs:388:9
[INFO] [stdout]     |
[INFO] [stdout] 388 |     let mut input = vec![0x00_u8; 64];
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/hc/encode.rs:425:9
[INFO] [stdout]     |
[INFO] [stdout] 425 |     let mut input = vec![0x11_u8; literal_length + match_length as usize + 32];
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/hc/encode.rs:464:9
[INFO] [stdout]     |
[INFO] [stdout] 464 |     let mut input = vec![0x22_u8; lit_len + 64];
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/hc/encode.rs:503:9
[INFO] [stdout]     |
[INFO] [stdout] 503 |     let mut input = vec![0x33_u8; match_len as usize + 64];
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/hc/encode.rs:541:9
[INFO] [stdout]     |
[INFO] [stdout] 541 |     let mut input = vec![0x44_u8; lit_len + 64];
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/hc/encode.rs:579:9
[INFO] [stdout]     |
[INFO] [stdout] 579 |     let mut input = vec![0x55_u8; lit_len + 64];
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> tests/hc/lz4mid.rs:254:5
[INFO] [stdout]     |
[INFO] [stdout] 254 |     unsafe {
[INFO] [stdout]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> tests/hc/lz4mid.rs:290:5
[INFO] [stdout]     |
[INFO] [stdout] 290 |     unsafe {
[INFO] [stdout]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> tests/hc/lz4mid.rs:315:5
[INFO] [stdout]     |
[INFO] [stdout] 315 |     unsafe {
[INFO] [stdout]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> tests/hc/lz4mid.rs:341:5
[INFO] [stdout]     |
[INFO] [stdout] 341 |     unsafe {
[INFO] [stdout]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> tests/hc/lz4mid.rs:374:5
[INFO] [stdout]     |
[INFO] [stdout] 374 |     unsafe {
[INFO] [stdout]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> tests/hc/lz4mid.rs:406:5
[INFO] [stdout]     |
[INFO] [stdout] 406 |     unsafe {
[INFO] [stdout]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> tests/hc/lz4mid.rs:434:5
[INFO] [stdout]     |
[INFO] [stdout] 434 |     unsafe {
[INFO] [stdout]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> tests/hc/lz4mid.rs:468:5
[INFO] [stdout]     |
[INFO] [stdout] 468 |     unsafe {
[INFO] [stdout]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `CHUNK_SIZE` is never used
[INFO] [stdout]   --> tests/io/compress_mt.rs:26:7
[INFO] [stdout]    |
[INFO] [stdout] 26 | const CHUNK_SIZE: usize = 4 * MB;
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/block/decompress_api.rs:454:13
[INFO] [stdout]     |
[INFO] [stdout] 454 |         let mut tmp_dst = core::slice::from_raw_parts_mut(dst_ptr, max_output);
[INFO] [stdout]     |             ----^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/file.rs:279:31
[INFO] [stdout]     |
[INFO] [stdout] 279 |                 .inspect_err(|e| {
[INFO] [stdout]     |                               ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `start0` is never read
[INFO] [stdout]    --> src/hc/compress_hc.rs:115:33
[INFO] [stdout]     |
[INFO] [stdout] 115 |     let mut start0: *const u8 = core::ptr::null();
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 153 |             start0 = ip;
[INFO] [stdout]     |             ----------- `start0` is overwritten here before the previous value is read
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `m0` is never read
[INFO] [stdout]    --> src/hc/compress_hc.rs:118:18
[INFO] [stdout]     |
[INFO] [stdout] 118 |     let mut m0 = nomatch;
[INFO] [stdout]     |                  ^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 154 |             m0 = m1;
[INFO] [stdout]     |             ------- `m0` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `m1` is never read
[INFO] [stdout]    --> src/hc/compress_hc.rs:119:18
[INFO] [stdout]     |
[INFO] [stdout] 119 |       let mut m1 = nomatch;
[INFO] [stdout]     |                    ^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 140 | /             m1 = insert_and_find_best_match(
[INFO] [stdout] 141 | |                 ctx,
[INFO] [stdout] 142 | |                 ip,
[INFO] [stdout] 143 | |                 matchlimit,
[INFO] [stdout] ...   |
[INFO] [stdout] 146 | |                 dict,
[INFO] [stdout] 147 | |             );
[INFO] [stdout]     | |_____________- `m1` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `m3` is never read
[INFO] [stdout]    --> src/hc/compress_hc.rs:121:18
[INFO] [stdout]     |
[INFO] [stdout] 121 |     let mut m3 = nomatch;
[INFO] [stdout]     |                  ^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 261 |                     m3 = nomatch;
[INFO] [stdout]     |                     ------------ `m3` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `search_state` is never read
[INFO] [stdout]    --> src/hc/compress_hc.rs:228:17
[INFO] [stdout]     |
[INFO] [stdout] 228 |                 search_state = SearchState::S2;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 365 |                 search_state = SearchState::S3;
[INFO] [stdout]     |                 ------------------------------ `search_state` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `retval` is never read
[INFO] [stdout]    --> src/hc/compress_hc.rs:616:27
[INFO] [stdout]     |
[INFO] [stdout] 616 |     let mut retval: i32 = 0;
[INFO] [stdout]     |                           ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 964 |             retval = 0;
[INFO] [stdout]     |             ---------- `retval` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `last_match_pos` is never read
[INFO] [stdout]    --> src/hc/compress_hc.rs:653:41
[INFO] [stdout]     |
[INFO] [stdout] 653 |         let mut last_match_pos: usize = 0;
[INFO] [stdout]     |                                         ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 713 |             last_match_pos = match_ml;
[INFO] [stdout]     |             ------------------------- `last_match_pos` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `match_length` is never read
[INFO] [stdout]    --> src/hc/lz4mid.rs:487:33
[INFO] [stdout]     |
[INFO] [stdout] 487 |     let mut match_length: u32 = 0;
[INFO] [stdout]     |                                 ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 661 |                     match_length = ml;
[INFO] [stdout]     |                     ----------------- `match_length` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `match_distance` is never read
[INFO] [stdout]    --> src/hc/lz4mid.rs:488:35
[INFO] [stdout]     |
[INFO] [stdout] 488 |     let mut match_distance: u32 = 0;
[INFO] [stdout]     |                                   ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 662 |                     match_distance = md;
[INFO] [stdout]     |                     ------------------- `match_distance` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `step` is never read
[INFO] [stdout]    --> src/hc/search.rs:372:37
[INFO] [stdout]     |
[INFO] [stdout] 372 |                 let mut step: i32 = 1;
[INFO] [stdout]     |                                     ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 377 |                     step = accel >> K_TRIGGER;
[INFO] [stdout]     |                     ------------------------- `step` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: unused dependency `num_cpus`
[INFO] [stderr]   --> Cargo.toml:44:15
[INFO] [stderr]    |
[INFO] [stderr] 44 | [dependencies.num_cpus]
[INFO] [stderr]    |               ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::unused_dependencies` is set to `warn` by default
[INFO] [stderr] help: consider removing the dependency on `num_cpus`
[INFO] [stderr] warning: `lz4r` (manifest) generated 1 warning
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 24.51s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nix v0.31.1
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 8`
[INFO] running `Command { std: "docker" "inspect" "6562c7aa4b5133b7efd41f3fe79abbb2c56b280800d63d32c42ac51737ffd878", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6562c7aa4b5133b7efd41f3fe79abbb2c56b280800d63d32c42ac51737ffd878", kill_on_drop: false }`
[INFO] [stdout] 6562c7aa4b5133b7efd41f3fe79abbb2c56b280800d63d32c42ac51737ffd878
