[INFO] cloning repository https://github.com/jthornber/node-compression-experiments
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jthornber/node-compression-experiments" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjthornber%2Fnode-compression-experiments", kill_on_drop: false }`
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[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 72bdb6746db3d270835a41365256b9a26590fff1
[INFO] testing jthornber/node-compression-experiments against master#2fd6efc32704647e64d3d646d21c4c68eae100e4 for pr-149852-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjthornber%2Fnode-compression-experiments" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
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[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jthornber/node-compression-experiments
[INFO] finished tweaking git repo https://github.com/jthornber/node-compression-experiments
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[INFO] validating manifest of git repo https://github.com/jthornber/node-compression-experiments on toolchain 2fd6efc32704647e64d3d646d21c4c68eae100e4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jthornber/node-compression-experiments 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" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stderr]    Compiling thinp v1.0.12 (https://github.com/jthornber/thin-provisioning-tools.git?branch=main#62694c64)
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[INFO] [stdout] warning: unused import: `Context`
[INFO] [stdout]  --> src/dump.rs:1:22
[INFO] [stdout]   |
[INFO] [stdout] 1 | use anyhow::{anyhow, Context, Result};
[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::fs::File`
[INFO] [stdout]  --> src/dump.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::BufWriter`
[INFO] [stdout]  --> src/dump.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::BufWriter;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Write`
[INFO] [stdout]  --> src/dump.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::Write;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Visit`
[INFO] [stdout]   --> src/dump.rs:17:46
[INFO] [stdout]    |
[INFO] [stdout] 17 | use thinp::thin::ir::{self, MetadataVisitor, Visit};
[INFO] [stdout]    |                                              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `thinp::thin::metadata_repair::*`
[INFO] [stdout]   --> src/dump.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | use thinp::thin::metadata_repair::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/packer.rs:5:15
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::io::{self};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::varint::*`
[INFO] [stdout]  --> src/packer.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use crate::varint::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `thinp::dump_utils`
[INFO] [stdout]   --> src/dump.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use thinp::dump_utils::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/packer.rs:551:21
[INFO] [stdout]     |
[INFO] [stdout] 551 |                 let len = m.len >> shift;
[INFO] [stdout]     |                     ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `opcode_bytes`
[INFO] [stdout]    --> src/packer.rs:579:14
[INFO] [stdout]     |
[INFO] [stdout] 579 |         let (opcode_bytes, arg_bytes, stats) = w.complete()?;
[INFO] [stdout]     |              ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_opcode_bytes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arg_bytes`
[INFO] [stdout]    --> src/packer.rs:579:28
[INFO] [stdout]     |
[INFO] [stdout] 579 |         let (opcode_bytes, arg_bytes, stats) = w.complete()?;
[INFO] [stdout]     |                            ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_arg_bytes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `report` is never read
[INFO] [stdout]    --> src/dump.rs:195:5
[INFO] [stdout]     |
[INFO] [stdout] 194 | struct ThinDumpContext {
[INFO] [stdout]     |        --------------- field in this struct
[INFO] [stdout] 195 |     report: Arc<Report>,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `highest_set_bit_position` is never used
[INFO] [stdout]   --> src/packer.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn highest_set_bit_position(n: u8) -> u8 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `u64_sub_to_i64` is never used
[INFO] [stdout]   --> src/packer.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn u64_sub_to_i64(a: u64, b: u64) -> i64 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Repeat` is never constructed
[INFO] [stdout]   --> src/packer.rs:72:5
[INFO] [stdout]    |
[INFO] [stdout] 64 | enum Instruction {
[INFO] [stdout]    |      ----------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 72 |     Repeat(u64),
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Instruction` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `format_hex` is never used
[INFO] [stdout]    --> src/packer.rs:401:4
[INFO] [stdout]     |
[INFO] [stdout] 401 | fn format_hex(bytes: &[u8]) -> String {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `write_varint` is never used
[INFO] [stdout]  --> src/varint.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn write_varint<W: Write>(writer: &mut W, mut value: u64) -> io::Result<()> {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_varint` is never used
[INFO] [stdout]   --> src/varint.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn read_varint<R: Read>(reader: &mut R) -> io::Result<u64> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/packer.rs:345:9
[INFO] [stdout]     |
[INFO] [stdout] 345 |         self.opcode_writer.byte_align();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 345 |         let _ = self.opcode_writer.byte_align();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/packer.rs:346:9
[INFO] [stdout]     |
[INFO] [stdout] 346 |         self.opcode_writer.flush();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 346 |         let _ = self.opcode_writer.flush();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/packer.rs:348:9
[INFO] [stdout]     |
[INFO] [stdout] 348 |         self.arg_writer.byte_align();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 348 |         let _ = self.arg_writer.byte_align();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/packer.rs:349:9
[INFO] [stdout]     |
[INFO] [stdout] 349 |         self.arg_writer.flush();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 349 |         let _ = self.arg_writer.flush();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `PossibleValuesParser`
[INFO] [stdout]  --> src/main.rs:1:21
[INFO] [stdout]   |
[INFO] [stdout] 1 | use clap::builder::{PossibleValuesParser, TypedValueParser};
[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: `ArgAction`
[INFO] [stdout]  --> src/main.rs:2:31
[INFO] [stdout]   |
[INFO] [stdout] 2 | use clap::{value_parser, Arg, ArgAction};
[INFO] [stdout]   |                               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `thinp::thin::metadata_repair::SuperblockOverrides`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use thinp::thin::metadata_repair::SuperblockOverrides;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TypedValueParser`
[INFO] [stdout]  --> src/main.rs:1:43
[INFO] [stdout]   |
[INFO] [stdout] 1 | use clap::builder::{PossibleValuesParser, TypedValueParser};
[INFO] [stdout]   |                                           ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `selected_devs`
[INFO] [stdout]   --> src/main.rs:69:13
[INFO] [stdout]    |
[INFO] [stdout] 69 |         let selected_devs: Option<Vec<u64>> = matches
[INFO] [stdout]    |             ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_selected_devs`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 29.97s
[INFO] running `Command { std: "docker" "inspect" "a5784327e5e3496831238b02253512071e6318ba9273173b32708d3f95c7affb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5784327e5e3496831238b02253512071e6318ba9273173b32708d3f95c7affb", kill_on_drop: false }`
[INFO] [stdout] a5784327e5e3496831238b02253512071e6318ba9273173b32708d3f95c7affb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 56de8a47790cdc3dfa468e60f4e7cacf5563f8c0cd3b5e5e092dd7708d9773db
[INFO] running `Command { std: "docker" "start" "-a" "56de8a47790cdc3dfa468e60f4e7cacf5563f8c0cd3b5e5e092dd7708d9773db", kill_on_drop: false }`
[INFO] [stderr] warning: `default_features` is deprecated in favor of `default-features` and will not work in the 2024 edition
[INFO] [stderr] (in the `test-log` dependency)
[INFO] [stdout] warning: unused import: `Context`
[INFO] [stdout]  --> src/dump.rs:1:22
[INFO] [stdout]   |
[INFO] [stdout] 1 | use anyhow::{anyhow, Context, Result};
[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::fs::File`
[INFO] [stdout]  --> src/dump.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::BufWriter`
[INFO] [stdout]  --> src/dump.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::BufWriter;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Write`
[INFO] [stdout]  --> src/dump.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::Write;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Visit`
[INFO] [stdout]   --> src/dump.rs:17:46
[INFO] [stdout]    |
[INFO] [stdout] 17 | use thinp::thin::ir::{self, MetadataVisitor, Visit};
[INFO] [stdout]    |                                              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `thinp::thin::metadata_repair::*`
[INFO] [stdout]   --> src/dump.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | use thinp::thin::metadata_repair::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/packer.rs:5:15
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::io::{self};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::varint::*`
[INFO] [stdout]  --> src/packer.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use crate::varint::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `thinp::dump_utils`
[INFO] [stdout]   --> src/dump.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use thinp::dump_utils::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/packer.rs:551:21
[INFO] [stdout]     |
[INFO] [stdout] 551 |                 let len = m.len >> shift;
[INFO] [stdout]     |                     ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `opcode_bytes`
[INFO] [stdout]    --> src/packer.rs:579:14
[INFO] [stdout]     |
[INFO] [stdout] 579 |         let (opcode_bytes, arg_bytes, stats) = w.complete()?;
[INFO] [stdout]     |              ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_opcode_bytes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arg_bytes`
[INFO] [stdout]    --> src/packer.rs:579:28
[INFO] [stdout]     |
[INFO] [stdout] 579 |         let (opcode_bytes, arg_bytes, stats) = w.complete()?;
[INFO] [stdout]     |                            ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_arg_bytes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `report` is never read
[INFO] [stdout]    --> src/dump.rs:195:5
[INFO] [stdout]     |
[INFO] [stdout] 194 | struct ThinDumpContext {
[INFO] [stdout]     |        --------------- field in this struct
[INFO] [stdout] 195 |     report: Arc<Report>,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `highest_set_bit_position` is never used
[INFO] [stdout]   --> src/packer.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn highest_set_bit_position(n: u8) -> u8 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling node-compression-experiments v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `u64_sub_to_i64` is never used
[INFO] [stdout]   --> src/packer.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn u64_sub_to_i64(a: u64, b: u64) -> i64 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Repeat` is never constructed
[INFO] [stdout]   --> src/packer.rs:72:5
[INFO] [stdout]    |
[INFO] [stdout] 64 | enum Instruction {
[INFO] [stdout]    |      ----------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 72 |     Repeat(u64),
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Instruction` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `format_hex` is never used
[INFO] [stdout]    --> src/packer.rs:401:4
[INFO] [stdout]     |
[INFO] [stdout] 401 | fn format_hex(bytes: &[u8]) -> String {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `write_varint` is never used
[INFO] [stdout]  --> src/varint.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn write_varint<W: Write>(writer: &mut W, mut value: u64) -> io::Result<()> {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_varint` is never used
[INFO] [stdout]   --> src/varint.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn read_varint<R: Read>(reader: &mut R) -> io::Result<u64> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/packer.rs:345:9
[INFO] [stdout]     |
[INFO] [stdout] 345 |         self.opcode_writer.byte_align();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 345 |         let _ = self.opcode_writer.byte_align();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/packer.rs:346:9
[INFO] [stdout]     |
[INFO] [stdout] 346 |         self.opcode_writer.flush();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 346 |         let _ = self.opcode_writer.flush();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/packer.rs:348:9
[INFO] [stdout]     |
[INFO] [stdout] 348 |         self.arg_writer.byte_align();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 348 |         let _ = self.arg_writer.byte_align();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/packer.rs:349:9
[INFO] [stdout]     |
[INFO] [stdout] 349 |         self.arg_writer.flush();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 349 |         let _ = self.arg_writer.flush();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `PossibleValuesParser`
[INFO] [stdout]  --> src/main.rs:1:21
[INFO] [stdout]   |
[INFO] [stdout] 1 | use clap::builder::{PossibleValuesParser, TypedValueParser};
[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: `ArgAction`
[INFO] [stdout]  --> src/main.rs:2:31
[INFO] [stdout]   |
[INFO] [stdout] 2 | use clap::{value_parser, Arg, ArgAction};
[INFO] [stdout]   |                               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `thinp::thin::metadata_repair::SuperblockOverrides`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use thinp::thin::metadata_repair::SuperblockOverrides;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Context`
[INFO] [stdout]  --> src/dump.rs:1:22
[INFO] [stdout]   |
[INFO] [stdout] 1 | use anyhow::{anyhow, Context, Result};
[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::fs::File`
[INFO] [stdout]  --> src/dump.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::BufWriter`
[INFO] [stdout]  --> src/dump.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::BufWriter;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Write`
[INFO] [stdout]  --> src/dump.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::Write;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Visit`
[INFO] [stdout]   --> src/dump.rs:17:46
[INFO] [stdout]    |
[INFO] [stdout] 17 | use thinp::thin::ir::{self, MetadataVisitor, Visit};
[INFO] [stdout]    |                                              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `thinp::thin::metadata_repair::*`
[INFO] [stdout]   --> src/dump.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | use thinp::thin::metadata_repair::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/packer.rs:5:15
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::io::{self};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::varint::*`
[INFO] [stdout]  --> src/packer.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use crate::varint::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TypedValueParser`
[INFO] [stdout]  --> src/main.rs:1:43
[INFO] [stdout]   |
[INFO] [stdout] 1 | use clap::builder::{PossibleValuesParser, TypedValueParser};
[INFO] [stdout]   |                                           ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `selected_devs`
[INFO] [stdout]   --> src/main.rs:69:13
[INFO] [stdout]    |
[INFO] [stdout] 69 |         let selected_devs: Option<Vec<u64>> = matches
[INFO] [stdout]    |             ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_selected_devs`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `thinp::dump_utils`
[INFO] [stdout]   --> src/dump.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use thinp::dump_utils::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/packer.rs:551:21
[INFO] [stdout]     |
[INFO] [stdout] 551 |                 let len = m.len >> shift;
[INFO] [stdout]     |                     ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `opcode_bytes`
[INFO] [stdout]    --> src/packer.rs:579:14
[INFO] [stdout]     |
[INFO] [stdout] 579 |         let (opcode_bytes, arg_bytes, stats) = w.complete()?;
[INFO] [stdout]     |              ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_opcode_bytes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arg_bytes`
[INFO] [stdout]    --> src/packer.rs:579:28
[INFO] [stdout]     |
[INFO] [stdout] 579 |         let (opcode_bytes, arg_bytes, stats) = w.complete()?;
[INFO] [stdout]     |                            ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_arg_bytes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `report` is never read
[INFO] [stdout]    --> src/dump.rs:195:5
[INFO] [stdout]     |
[INFO] [stdout] 194 | struct ThinDumpContext {
[INFO] [stdout]     |        --------------- field in this struct
[INFO] [stdout] 195 |     report: Arc<Report>,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `highest_set_bit_position` is never used
[INFO] [stdout]   --> src/packer.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn highest_set_bit_position(n: u8) -> u8 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Repeat` is never constructed
[INFO] [stdout]   --> src/packer.rs:72:5
[INFO] [stdout]    |
[INFO] [stdout] 64 | enum Instruction {
[INFO] [stdout]    |      ----------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 72 |     Repeat(u64),
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Instruction` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `format_hex` is never used
[INFO] [stdout]    --> src/packer.rs:401:4
[INFO] [stdout]     |
[INFO] [stdout] 401 | fn format_hex(bytes: &[u8]) -> String {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/packer.rs:345:9
[INFO] [stdout]     |
[INFO] [stdout] 345 |         self.opcode_writer.byte_align();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 345 |         let _ = self.opcode_writer.byte_align();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/packer.rs:346:9
[INFO] [stdout]     |
[INFO] [stdout] 346 |         self.opcode_writer.flush();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 346 |         let _ = self.opcode_writer.flush();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/packer.rs:348:9
[INFO] [stdout]     |
[INFO] [stdout] 348 |         self.arg_writer.byte_align();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 348 |         let _ = self.arg_writer.byte_align();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/packer.rs:349:9
[INFO] [stdout]     |
[INFO] [stdout] 349 |         self.arg_writer.flush();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 349 |         let _ = self.arg_writer.flush();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.98s
[INFO] running `Command { std: "docker" "inspect" "56de8a47790cdc3dfa468e60f4e7cacf5563f8c0cd3b5e5e092dd7708d9773db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56de8a47790cdc3dfa468e60f4e7cacf5563f8c0cd3b5e5e092dd7708d9773db", kill_on_drop: false }`
[INFO] [stdout] 56de8a47790cdc3dfa468e60f4e7cacf5563f8c0cd3b5e5e092dd7708d9773db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 289ecec1ca7ab65b2cb02b6f49c0ce84dc73ad9a99566d24afd26a8e3498edbb
[INFO] running `Command { std: "docker" "start" "-a" "289ecec1ca7ab65b2cb02b6f49c0ce84dc73ad9a99566d24afd26a8e3498edbb", kill_on_drop: false }`
[INFO] [stderr] warning: `default_features` is deprecated in favor of `default-features` and will not work in the 2024 edition
[INFO] [stderr] (in the `test-log` dependency)
[INFO] [stderr] warning: unused import: `Context`
[INFO] [stderr]  --> src/dump.rs:1:22
[INFO] [stderr]   |
[INFO] [stderr] 1 | use anyhow::{anyhow, Context, Result};
[INFO] [stderr]   |                      ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs::File`
[INFO] [stderr]  --> src/dump.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::fs::File;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::BufWriter`
[INFO] [stderr]  --> src/dump.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::io::BufWriter;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::Write`
[INFO] [stderr]  --> src/dump.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::io::Write;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Visit`
[INFO] [stderr]   --> src/dump.rs:17:46
[INFO] [stderr]    |
[INFO] [stderr] 17 | use thinp::thin::ir::{self, MetadataVisitor, Visit};
[INFO] [stderr]    |                                              ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `thinp::thin::metadata_repair::*`
[INFO] [stderr]   --> src/dump.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 | use thinp::thin::metadata_repair::*;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self`
[INFO] [stderr]  --> src/packer.rs:5:15
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::io::{self};
[INFO] [stderr]   |               ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::varint::*`
[INFO] [stderr]  --> src/packer.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use crate::varint::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `thinp::dump_utils`
[INFO] [stderr]   --> src/dump.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use thinp::dump_utils::*;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `len`
[INFO] [stderr]    --> src/packer.rs:551:21
[INFO] [stderr]     |
[INFO] [stderr] 551 |                 let len = m.len >> shift;
[INFO] [stderr]     |                     ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `opcode_bytes`
[INFO] [stderr]    --> src/packer.rs:579:14
[INFO] [stderr]     |
[INFO] [stderr] 579 |         let (opcode_bytes, arg_bytes, stats) = w.complete()?;
[INFO] [stderr]     |              ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_opcode_bytes`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `arg_bytes`
[INFO] [stderr]    --> src/packer.rs:579:28
[INFO] [stderr]     |
[INFO] [stderr] 579 |         let (opcode_bytes, arg_bytes, stats) = w.complete()?;
[INFO] [stderr]     |                            ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_arg_bytes`
[INFO] [stderr] 
[INFO] [stderr] warning: field `report` is never read
[INFO] [stderr]    --> src/dump.rs:195:5
[INFO] [stderr]     |
[INFO] [stderr] 194 | struct ThinDumpContext {
[INFO] [stderr]     |        --------------- field in this struct
[INFO] [stderr] 195 |     report: Arc<Report>,
[INFO] [stderr]     |     ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `highest_set_bit_position` is never used
[INFO] [stderr]   --> src/packer.rs:13:4
[INFO] [stderr]    |
[INFO] [stderr] 13 | fn highest_set_bit_position(n: u8) -> u8 {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `u64_sub_to_i64` is never used
[INFO] [stderr]   --> src/packer.rs:21:8
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub fn u64_sub_to_i64(a: u64, b: u64) -> i64 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant `Repeat` is never constructed
[INFO] [stderr]   --> src/packer.rs:72:5
[INFO] [stderr]    |
[INFO] [stderr] 64 | enum Instruction {
[INFO] [stderr]    |      ----------- variant in this enum
[INFO] [stderr] ...
[INFO] [stderr] 72 |     Repeat(u64),
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Instruction` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: function `format_hex` is never used
[INFO] [stderr]    --> src/packer.rs:401:4
[INFO] [stderr]     |
[INFO] [stderr] 401 | fn format_hex(bytes: &[u8]) -> String {
[INFO] [stderr]     |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `write_varint` is never used
[INFO] [stderr]  --> src/varint.rs:6:8
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn write_varint<W: Write>(writer: &mut W, mut value: u64) -> io::Result<()> {
[INFO] [stderr]   |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `read_varint` is never used
[INFO] [stderr]   --> src/varint.rs:15:8
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub fn read_varint<R: Read>(reader: &mut R) -> io::Result<u64> {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/packer.rs:345:9
[INFO] [stderr]     |
[INFO] [stderr] 345 |         self.opcode_writer.byte_align();
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 345 |         let _ = self.opcode_writer.byte_align();
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/packer.rs:346:9
[INFO] [stderr]     |
[INFO] [stderr] 346 |         self.opcode_writer.flush();
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 346 |         let _ = self.opcode_writer.flush();
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/packer.rs:348:9
[INFO] [stderr]     |
[INFO] [stderr] 348 |         self.arg_writer.byte_align();
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 348 |         let _ = self.arg_writer.byte_align();
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/packer.rs:349:9
[INFO] [stderr]     |
[INFO] [stderr] 349 |         self.arg_writer.flush();
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 349 |         let _ = self.arg_writer.flush();
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `node-compression-experiments` (lib) generated 23 warnings (run `cargo fix --lib -p node-compression-experiments` to apply 11 suggestions)
[INFO] [stderr] warning: `node-compression-experiments` (lib test) generated 20 warnings (20 duplicates)
[INFO] [stderr] warning: unused import: `PossibleValuesParser`
[INFO] [stderr]  --> src/main.rs:1:21
[INFO] [stderr]   |
[INFO] [stderr] 1 | use clap::builder::{PossibleValuesParser, TypedValueParser};
[INFO] [stderr]   |                     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ArgAction`
[INFO] [stderr]  --> src/main.rs:2:31
[INFO] [stderr]   |
[INFO] [stderr] 2 | use clap::{value_parser, Arg, ArgAction};
[INFO] [stderr]   |                               ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `thinp::thin::metadata_repair::SuperblockOverrides`
[INFO] [stderr]  --> src/main.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use thinp::thin::metadata_repair::SuperblockOverrides;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `TypedValueParser`
[INFO] [stderr]  --> src/main.rs:1:43
[INFO] [stderr]   |
[INFO] [stderr] 1 | use clap::builder::{PossibleValuesParser, TypedValueParser};
[INFO] [stderr]   |                                           ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `selected_devs`
[INFO] [stderr]   --> src/main.rs:69:13
[INFO] [stderr]    |
[INFO] [stderr] 69 |         let selected_devs: Option<Vec<u64>> = matches
[INFO] [stderr]    |             ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_selected_devs`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `node-compression-experiments` (bin "node-compression-experiments" test) generated 5 warnings (run `cargo fix --bin "node-compression-experiments" -p node-compression-experiments --tests` to apply 4 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.13s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/node_compression_experiments-15075945143407d5)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test varint::tests::test_varint_invalid_too_long ... ok
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/node_compression_experiments-c9541a03db9f8a54)
[INFO] [stdout] test varint::tests::test_varint_max_value ... ok
[INFO] [stdout] test varint::tests::test_varint_long_encoding ... ok
[INFO] [stdout] test packer::test_u64_sub_to_i64 ... ok
[INFO] [stdout] test varint::tests::test_varint_roundtrip ... ok
[INFO] [stdout] test varint::tests::test_varint_size ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests node_compression_experiments
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "289ecec1ca7ab65b2cb02b6f49c0ce84dc73ad9a99566d24afd26a8e3498edbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "289ecec1ca7ab65b2cb02b6f49c0ce84dc73ad9a99566d24afd26a8e3498edbb", kill_on_drop: false }`
[INFO] [stdout] 289ecec1ca7ab65b2cb02b6f49c0ce84dc73ad9a99566d24afd26a8e3498edbb