[INFO] cloning repository https://github.com/knknkn1162/sutramaking-rustbyexample
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/knknkn1162/sutramaking-rustbyexample" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fknknkn1162%2Fsutramaking-rustbyexample", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fknknkn1162%2Fsutramaking-rustbyexample'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ed8d40cb169c0e4aa14295977e391d7d15d1a27c
[INFO] checking knknkn1162/sutramaking-rustbyexample against try#0269aeccce4fd29ce9ad0ebd47a62e584d7e25ef for pr-147859
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fknknkn1162%2Fsutramaking-rustbyexample" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/knknkn1162/sutramaking-rustbyexample
[INFO] finished tweaking git repo https://github.com/knknkn1162/sutramaking-rustbyexample
[INFO] tweaked toml for git repo https://github.com/knknkn1162/sutramaking-rustbyexample written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/knknkn1162/sutramaking-rustbyexample on toolchain 0269aeccce4fd29ce9ad0ebd47a62e584d7e25ef
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0269aeccce4fd29ce9ad0ebd47a62e584d7e25ef" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/knknkn1162/sutramaking-rustbyexample 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" "+0269aeccce4fd29ce9ad0ebd47a62e584d7e25ef" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+0269aeccce4fd29ce9ad0ebd47a62e584d7e25ef" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bde971d2d4246a32ce1e7893bdceb0f7ecea646c3761982ba34a6fb3fc892be3
[INFO] running `Command { std: "docker" "start" "-a" "bde971d2d4246a32ce1e7893bdceb0f7ecea646c3761982ba34a6fb3fc892be3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bde971d2d4246a32ce1e7893bdceb0f7ecea646c3761982ba34a6fb3fc892be3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bde971d2d4246a32ce1e7893bdceb0f7ecea646c3761982ba34a6fb3fc892be3", kill_on_drop: false }`
[INFO] [stdout] bde971d2d4246a32ce1e7893bdceb0f7ecea646c3761982ba34a6fb3fc892be3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+0269aeccce4fd29ce9ad0ebd47a62e584d7e25ef" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0403b0b6ebb3c53590d788eca940460e06af0843bec743c78acbcd5f037eb99c
[INFO] running `Command { std: "docker" "start" "-a" "0403b0b6ebb3c53590d788eca940460e06af0843bec743c78acbcd5f037eb99c", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]     Checking official_docs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]  --> src/misc/filesystem.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fs;
[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::os::unix`
[INFO] [stdout]  --> src/misc/filesystem.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::os::unix;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]  --> src/misc/filesystem.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fs;
[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::os::unix`
[INFO] [stdout]  --> src/misc/filesystem.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::os::unix;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/misc/open.rs:16:64
[INFO] [stdout]    |
[INFO] [stdout] 16 |         Err(why) => panic!("couldn't read {}:{}", display, why.description()),
[INFO] [stdout]    |                                                                ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/misc/create.rs:20:69
[INFO] [stdout]    |
[INFO] [stdout] 20 |         Err(why ) => panic!("couldn't create {} : {}", display, why.description()),
[INFO] [stdout]    |                                                                     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/misc/create.rs:25:70
[INFO] [stdout]    |
[INFO] [stdout] 25 |         Err(why) => panic!("couldn't write to {} : {}", display, why.description()),
[INFO] [stdout]    |                                                                      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/misc/pipes.rs:19:63
[INFO] [stdout]    |
[INFO] [stdout] 19 |         Err(why) => panic!("couldn't read wc stdout: {}", why.description()),
[INFO] [stdout]    |                                                               ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/misc/open.rs:16:64
[INFO] [stdout]    |
[INFO] [stdout] 16 |         Err(why) => panic!("couldn't read {}:{}", display, why.description()),
[INFO] [stdout]    |                                                                ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/misc/create.rs:20:69
[INFO] [stdout]    |
[INFO] [stdout] 20 |         Err(why ) => panic!("couldn't create {} : {}", display, why.description()),
[INFO] [stdout]    |                                                                     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/misc/create.rs:25:70
[INFO] [stdout]    |
[INFO] [stdout] 25 |         Err(why) => panic!("couldn't write to {} : {}", display, why.description()),
[INFO] [stdout]    |                                                                      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/misc/pipes.rs:19:63
[INFO] [stdout]    |
[INFO] [stdout] 19 |         Err(why) => panic!("couldn't read wc stdout: {}", why.description()),
[INFO] [stdout]    |                                                               ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `res`
[INFO] [stdout]   --> src/misc/filesystem.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let res = f.read_to_string(&mut s)?;
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_res`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `res`
[INFO] [stdout]   --> src/misc/filesystem.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let res = OpenOptions::new().create(true).write(true).open(path)?;
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_res`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `NTHREADS` is never used
[INFO] [stdout]  --> src/misc/threads.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | static NTHREADS: i32 = 10;
[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 `test` is never used
[INFO] [stdout]  --> src/misc/threads.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn test() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]  --> src/misc/map_reduce.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn test() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `NTHREADS` is never used
[INFO] [stdout]  --> src/misc/channels.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | static NTHREADS: i32 = 3;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]  --> src/misc/channels.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn test() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]  --> src/misc/path.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn test() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]  --> src/misc/open.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn test() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `LOREM_IPSUM` is never used
[INFO] [stdout]  --> src/misc/create.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | static LOREM_IPSUM: &'static str =
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]   --> src/misc/create.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn test() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `PANGRAM` is never used
[INFO] [stdout]  --> src/misc/pipes.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | static PANGRAM: &'static str =
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]  --> src/misc/pipes.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn test() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]  --> src/misc/wait.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn test() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `cat` is never used
[INFO] [stdout]  --> src/misc/filesystem.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn cat(path: &Path)->io::Result<String> {
[INFO] [stdout]   |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `echo` is never used
[INFO] [stdout]   --> src/misc/filesystem.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn echo(s: &str, path: &Path)-> io::Result<()> {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `touch` is never used
[INFO] [stdout]   --> src/misc/filesystem.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn touch(path: &Path) -> io::Result<()> {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/misc/args.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn main() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Number` is never constructed
[INFO] [stdout]  --> src/types/into_from.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Number {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]   --> src/types/into_from.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn test() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `res`
[INFO] [stdout]   --> src/misc/filesystem.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let res = f.read_to_string(&mut s)?;
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_res`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `res`
[INFO] [stdout]   --> src/misc/filesystem.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let res = OpenOptions::new().create(true).write(true).open(path)?;
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_res`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `NTHREADS` is never used
[INFO] [stdout]  --> src/misc/threads.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | static NTHREADS: i32 = 10;
[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 `test` is never used
[INFO] [stdout]  --> src/misc/threads.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn test() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]  --> src/misc/map_reduce.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn test() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `NTHREADS` is never used
[INFO] [stdout]  --> src/misc/channels.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | static NTHREADS: i32 = 3;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]  --> src/misc/channels.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn test() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]  --> src/misc/path.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn test() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]  --> src/misc/open.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn test() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `LOREM_IPSUM` is never used
[INFO] [stdout]  --> src/misc/create.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | static LOREM_IPSUM: &'static str =
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]   --> src/misc/create.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn test() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `PANGRAM` is never used
[INFO] [stdout]  --> src/misc/pipes.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | static PANGRAM: &'static str =
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]  --> src/misc/pipes.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn test() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]  --> src/misc/wait.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn test() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `cat` is never used
[INFO] [stdout]  --> src/misc/filesystem.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn cat(path: &Path)->io::Result<String> {
[INFO] [stdout]   |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `echo` is never used
[INFO] [stdout]   --> src/misc/filesystem.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn echo(s: &str, path: &Path)-> io::Result<()> {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `touch` is never used
[INFO] [stdout]   --> src/misc/filesystem.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn touch(path: &Path) -> io::Result<()> {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/misc/args.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn main() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Number` is never constructed
[INFO] [stdout]  --> src/types/into_from.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Number {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]   --> src/types/into_from.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn test() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] running `Command { std: "docker" "inspect" "0403b0b6ebb3c53590d788eca940460e06af0843bec743c78acbcd5f037eb99c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0403b0b6ebb3c53590d788eca940460e06af0843bec743c78acbcd5f037eb99c", kill_on_drop: false }`
[INFO] [stdout] 0403b0b6ebb3c53590d788eca940460e06af0843bec743c78acbcd5f037eb99c
