[INFO] cloning repository https://github.com/Ironlenny/rupart
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Ironlenny/rupart" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIronlenny%2Frupart", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIronlenny%2Frupart'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c38cba3b539456a27140f1d3eeeba4b62e9ab71f
[INFO] checking Ironlenny/rupart against try#b1f2594eac607c1f051534800237eeedb5590a49 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIronlenny%2Frupart" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Ironlenny/rupart
[INFO] finished tweaking git repo https://github.com/Ironlenny/rupart
[INFO] tweaked toml for git repo https://github.com/Ironlenny/rupart written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Ironlenny/rupart on toolchain b1f2594eac607c1f051534800237eeedb5590a49
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Ironlenny/rupart 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" "+b1f2594eac607c1f051534800237eeedb5590a49" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 2 packages to latest compatible versions
[INFO] [stderr]       Adding typename v0.1.1 (https://github.com/Ironlenny/typename?branch=master#26c0c8f5)
[INFO] [stderr]       Adding typename_derive v0.1.3 (https://github.com/Ironlenny/typename?branch=master#26c0c8f5)
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e58e34c55a24d11f6c9f28a4367cd7d18061f1f5ba8e1be113c1acc8652f4cd9
[INFO] running `Command { std: "docker" "start" "-a" "e58e34c55a24d11f6c9f28a4367cd7d18061f1f5ba8e1be113c1acc8652f4cd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e58e34c55a24d11f6c9f28a4367cd7d18061f1f5ba8e1be113c1acc8652f4cd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e58e34c55a24d11f6c9f28a4367cd7d18061f1f5ba8e1be113c1acc8652f4cd9", kill_on_drop: false }`
[INFO] [stdout] e58e34c55a24d11f6c9f28a4367cd7d18061f1f5ba8e1be113c1acc8652f4cd9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6cf3c14eece3eceef31d1ba1923c45c92588ac7b718b718fa8edc024249ae299
[INFO] running `Command { std: "docker" "start" "-a" "6cf3c14eece3eceef31d1ba1923c45c92588ac7b718b718fa8edc024249ae299", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.29
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.34
[INFO] [stderr]    Compiling libc v0.2.54
[INFO] [stderr]     Checking cfg-if v0.1.7
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]    Compiling cc v1.0.36
[INFO] [stderr]    Compiling arrayvec v0.4.10
[INFO] [stderr]     Checking nodrop v0.1.13
[INFO] [stderr]    Compiling autocfg v0.1.2
[INFO] [stderr]     Checking crossbeam-utils v0.2.2
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking memoffset v0.2.1
[INFO] [stderr]    Compiling backtrace v0.3.15
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]    Compiling unicode-segmentation v1.2.1
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking rustc-demangle v0.1.14
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]     Checking num_cpus v1.10.0
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking block-padding v0.1.4
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]    Compiling rayon v1.0.3
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking either v1.5.2
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]     Checking opaque-debug v0.2.2
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking itertools v0.8.0
[INFO] [stderr]     Checking generic-array v0.12.0
[INFO] [stderr]     Checking digest v0.8.0
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking md-5 v0.8.0
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling typename_derive v0.1.3 (https://github.com/Ironlenny/typename?branch=master#26c0c8f5)
[INFO] [stderr]    Compiling structopt-derive v0.2.15
[INFO] [stderr]    Compiling proc-macro-hack v0.5.6
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking exitfailure v0.5.1
[INFO] [stderr]     Checking typename v0.1.1 (https://github.com/Ironlenny/typename?branch=master#26c0c8f5)
[INFO] [stderr]    Compiling hex-literal-impl v0.2.0
[INFO] [stderr]     Checking hex-literal v0.2.0
[INFO] [stderr]     Checking structopt v0.2.15
[INFO] [stderr]     Checking rupart v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `failure::ResultExt`
[INFO] [stdout]  --> src/lib.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use failure::ResultExt;
[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::cmp::Ordering`
[INFO] [stdout]   --> src/lib.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::cmp::Ordering;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BinaryHeap`
[INFO] [stdout]   --> src/lib.rs:14:24
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::collections::{BinaryHeap, HashMap};
[INFO] [stdout]    |                        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around method argument
[INFO] [stdout]    --> src/lib.rs:408:22
[INFO] [stdout]     |
[INFO] [stdout] 408 |         readers.push({ MessageBlock::new(file, block_size) });
[INFO] [stdout]     |                      ^^                                   ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_braces)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these braces
[INFO] [stdout]     |
[INFO] [stdout] 408 -         readers.push({ MessageBlock::new(file, block_size) });
[INFO] [stdout] 408 +         readers.push(MessageBlock::new(file, block_size));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `typename::TypeName`
[INFO] [stdout]    --> src/lib.rs:720:9
[INFO] [stdout]     |
[INFO] [stdout] 720 |     use typename::TypeName;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `failure::ResultExt`
[INFO] [stdout]  --> src/lib.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use failure::ResultExt;
[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::cmp::Ordering`
[INFO] [stdout]   --> src/lib.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::cmp::Ordering;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BinaryHeap`
[INFO] [stdout]   --> src/lib.rs:14:24
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::collections::{BinaryHeap, HashMap};
[INFO] [stdout]    |                        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around method argument
[INFO] [stdout]    --> src/lib.rs:408:22
[INFO] [stdout]     |
[INFO] [stdout] 408 |         readers.push({ MessageBlock::new(file, block_size) });
[INFO] [stdout]     |                      ^^                                   ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_braces)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these braces
[INFO] [stdout]     |
[INFO] [stdout] 408 -         readers.push({ MessageBlock::new(file, block_size) });
[INFO] [stdout] 408 +         readers.push(MessageBlock::new(file, block_size));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `files`
[INFO] [stdout]   --> src/lib.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |         files: Vec<PathBuf>,
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_files`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `block_size`
[INFO] [stdout]   --> src/lib.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 |         block_size: usize,
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_block_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parity`
[INFO] [stdout]   --> src/lib.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |         parity: usize,
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_parity`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tx_writes`
[INFO] [stdout]   --> src/lib.rs:50:14
[INFO] [stdout]    |
[INFO] [stdout] 50 |         let (tx_writes, rx_writes): (Sender<Message>, Receiver<Message>) = channel();
[INFO] [stdout]    |              ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tx_writes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tx_input`
[INFO] [stdout]   --> src/lib.rs:51:14
[INFO] [stdout]    |
[INFO] [stdout] 51 |         let (tx_input, rx_input): (Sender<Message>, Receiver<Message>) = channel();
[INFO] [stdout]    |              ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tx_input`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rx_input`
[INFO] [stdout]   --> src/lib.rs:51:24
[INFO] [stdout]    |
[INFO] [stdout] 51 |         let (tx_input, rx_input): (Sender<Message>, Receiver<Message>) = channel();
[INFO] [stdout]    |                        ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rx_input`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tx_body`
[INFO] [stdout]   --> src/lib.rs:52:14
[INFO] [stdout]    |
[INFO] [stdout] 52 |         let (tx_body, rx_body): (Sender<Message>, Receiver<Message>) = channel();
[INFO] [stdout]    |              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tx_body`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rx_body`
[INFO] [stdout]   --> src/lib.rs:52:23
[INFO] [stdout]    |
[INFO] [stdout] 52 |         let (tx_body, rx_body): (Sender<Message>, Receiver<Message>) = channel();
[INFO] [stdout]    |                       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rx_body`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tx_file_descript`
[INFO] [stdout]   --> src/lib.rs:53:14
[INFO] [stdout]    |
[INFO] [stdout] 53 |         let (tx_file_descript, rx_file_descript): (Sender<Message>, Receiver<Message>) = channel();
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tx_file_descript`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rx_file_descript`
[INFO] [stdout]   --> src/lib.rs:53:32
[INFO] [stdout]    |
[INFO] [stdout] 53 |         let (tx_file_descript, rx_file_descript): (Sender<Message>, Receiver<Message>) = channel();
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rx_file_descript`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tx_recovery`
[INFO] [stdout]   --> src/lib.rs:54:14
[INFO] [stdout]    |
[INFO] [stdout] 54 |         let (tx_recovery, rx_recovery): (Sender<Message>, Receiver<Message>) = channel();
[INFO] [stdout]    |              ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tx_recovery`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rx_recovery`
[INFO] [stdout]   --> src/lib.rs:54:27
[INFO] [stdout]    |
[INFO] [stdout] 54 |         let (tx_recovery, rx_recovery): (Sender<Message>, Receiver<Message>) = channel();
[INFO] [stdout]    |                           ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rx_recovery`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:322:13
[INFO] [stdout]     |
[INFO] [stdout] 322 |         let mut result;
[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: `files`
[INFO] [stdout]   --> src/lib.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |         files: Vec<PathBuf>,
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_files`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `block_size`
[INFO] [stdout]   --> src/lib.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 |         block_size: usize,
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_block_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parity`
[INFO] [stdout]   --> src/lib.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |         parity: usize,
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_parity`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tx_writes`
[INFO] [stdout]   --> src/lib.rs:50:14
[INFO] [stdout]    |
[INFO] [stdout] 50 |         let (tx_writes, rx_writes): (Sender<Message>, Receiver<Message>) = channel();
[INFO] [stdout]    |              ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tx_writes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tx_input`
[INFO] [stdout]   --> src/lib.rs:51:14
[INFO] [stdout]    |
[INFO] [stdout] 51 |         let (tx_input, rx_input): (Sender<Message>, Receiver<Message>) = channel();
[INFO] [stdout]    |              ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tx_input`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rx_input`
[INFO] [stdout]   --> src/lib.rs:51:24
[INFO] [stdout]    |
[INFO] [stdout] 51 |         let (tx_input, rx_input): (Sender<Message>, Receiver<Message>) = channel();
[INFO] [stdout]    |                        ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rx_input`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tx_body`
[INFO] [stdout]   --> src/lib.rs:52:14
[INFO] [stdout]    |
[INFO] [stdout] 52 |         let (tx_body, rx_body): (Sender<Message>, Receiver<Message>) = channel();
[INFO] [stdout]    |              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tx_body`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rx_body`
[INFO] [stdout]   --> src/lib.rs:52:23
[INFO] [stdout]    |
[INFO] [stdout] 52 |         let (tx_body, rx_body): (Sender<Message>, Receiver<Message>) = channel();
[INFO] [stdout]    |                       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rx_body`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tx_file_descript`
[INFO] [stdout]   --> src/lib.rs:53:14
[INFO] [stdout]    |
[INFO] [stdout] 53 |         let (tx_file_descript, rx_file_descript): (Sender<Message>, Receiver<Message>) = channel();
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tx_file_descript`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rx_file_descript`
[INFO] [stdout]   --> src/lib.rs:53:32
[INFO] [stdout]    |
[INFO] [stdout] 53 |         let (tx_file_descript, rx_file_descript): (Sender<Message>, Receiver<Message>) = channel();
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rx_file_descript`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tx_recovery`
[INFO] [stdout]   --> src/lib.rs:54:14
[INFO] [stdout]    |
[INFO] [stdout] 54 |         let (tx_recovery, rx_recovery): (Sender<Message>, Receiver<Message>) = channel();
[INFO] [stdout]    |              ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tx_recovery`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rx_recovery`
[INFO] [stdout]   --> src/lib.rs:54:27
[INFO] [stdout]    |
[INFO] [stdout] 54 |         let (tx_recovery, rx_recovery): (Sender<Message>, Receiver<Message>) = channel();
[INFO] [stdout]    |                           ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rx_recovery`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:322:13
[INFO] [stdout]     |
[INFO] [stdout] 322 |         let mut result;
[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]    --> src/lib.rs:850:13
[INFO] [stdout]     |
[INFO] [stdout] 850 |         let mut file_ids = pipeline.file_ids.write().unwrap();
[INFO] [stdout]     |             ----^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `block_size`
[INFO] [stdout]    --> src/lib.rs:890:13
[INFO] [stdout]     |
[INFO] [stdout] 890 |         let block_size = 65536;
[INFO] [stdout]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_block_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num_blocks`
[INFO] [stdout]    --> src/lib.rs:891:13
[INFO] [stdout]     |
[INFO] [stdout] 891 |         let num_blocks = 16;
[INFO] [stdout]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_blocks`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `path`
[INFO] [stdout]    --> src/lib.rs:892:13
[INFO] [stdout]     |
[INFO] [stdout] 892 |         let path = PathBuf::from(&PATH);
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/lib.rs:683:21
[INFO] [stdout]     |
[INFO] [stdout] 683 |                     drop(tx);
[INFO] [stdout]     |                     ^^^^^--^
[INFO] [stdout]     |                          |
[INFO] [stdout]     |                          argument has type `&std::sync::mpsc::Sender<Arc<Block>>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 683 -                     drop(tx);
[INFO] [stdout] 683 +                     let _ = tx;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/lib.rs:683:21
[INFO] [stdout]     |
[INFO] [stdout] 683 |                     drop(tx);
[INFO] [stdout]     |                     ^^^^^--^
[INFO] [stdout]     |                          |
[INFO] [stdout]     |                          argument has type `&std::sync::mpsc::Sender<std::sync::Arc<Block>>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 683 -                     drop(tx);
[INFO] [stdout] 683 +                     let _ = tx;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.94s
[INFO] running `Command { std: "docker" "inspect" "6cf3c14eece3eceef31d1ba1923c45c92588ac7b718b718fa8edc024249ae299", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6cf3c14eece3eceef31d1ba1923c45c92588ac7b718b718fa8edc024249ae299", kill_on_drop: false }`
[INFO] [stdout] 6cf3c14eece3eceef31d1ba1923c45c92588ac7b718b718fa8edc024249ae299
