[INFO] cloning repository https://github.com/tyoc213-side-quests/snoyman-bouncy
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tyoc213-side-quests/snoyman-bouncy" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftyoc213-side-quests%2Fsnoyman-bouncy", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftyoc213-side-quests%2Fsnoyman-bouncy'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] df2664bf5ebabb1cd43df3e81a8adb98640352ed
[INFO] checking tyoc213-side-quests/snoyman-bouncy against try#73ffebff6f34db7eb167bf9edcf2afa19c3073e9 for pr-147841
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftyoc213-side-quests%2Fsnoyman-bouncy" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/tyoc213-side-quests/snoyman-bouncy
[INFO] finished tweaking git repo https://github.com/tyoc213-side-quests/snoyman-bouncy
[INFO] tweaked toml for git repo https://github.com/tyoc213-side-quests/snoyman-bouncy written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/tyoc213-side-quests/snoyman-bouncy on toolchain 73ffebff6f34db7eb167bf9edcf2afa19c3073e9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+73ffebff6f34db7eb167bf9edcf2afa19c3073e9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/tyoc213-side-quests/snoyman-bouncy 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" "+73ffebff6f34db7eb167bf9edcf2afa19c3073e9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking tyoc213-side-quests/snoyman-bouncy against try#73ffebff6f34db7eb167bf9edcf2afa19c3073e9 for pr-147841
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftyoc213-side-quests%2Fsnoyman-bouncy" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/tyoc213-side-quests/snoyman-bouncy
[INFO] finished tweaking git repo https://github.com/tyoc213-side-quests/snoyman-bouncy
[INFO] tweaked toml for git repo https://github.com/tyoc213-side-quests/snoyman-bouncy written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/tyoc213-side-quests/snoyman-bouncy on toolchain 73ffebff6f34db7eb167bf9edcf2afa19c3073e9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+73ffebff6f34db7eb167bf9edcf2afa19c3073e9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/tyoc213-side-quests/snoyman-bouncy 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" "+73ffebff6f34db7eb167bf9edcf2afa19c3073e9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pancurses v0.17.0
[INFO] [stderr]   Downloaded ncurses v5.101.0
[INFO] [stderr]   Downloaded winreg v0.5.1
[INFO] [stderr]   Downloaded pdcurses-sys v0.7.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+73ffebff6f34db7eb167bf9edcf2afa19c3073e9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b3232eea7fe5b77fd49f952b53212ffae14239936fd77df94b94c0c903dee50a
[INFO] running `Command { std: "docker" "start" "-a" "b3232eea7fe5b77fd49f952b53212ffae14239936fd77df94b94c0c903dee50a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b3232eea7fe5b77fd49f952b53212ffae14239936fd77df94b94c0c903dee50a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3232eea7fe5b77fd49f952b53212ffae14239936fd77df94b94c0c903dee50a", kill_on_drop: false }`
[INFO] [stdout] b3232eea7fe5b77fd49f952b53212ffae14239936fd77df94b94c0c903dee50a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+73ffebff6f34db7eb167bf9edcf2afa19c3073e9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eeb04449f171a37cb845631e47f6a20a860847ac53a70d6be6573ae4b09ce621
[INFO] running `Command { std: "docker" "start" "-a" "eeb04449f171a37cb845631e47f6a20a860847ac53a70d6be6573ae4b09ce621", kill_on_drop: false }`
[INFO] [stderr]    Compiling pkg-config v0.3.26
[INFO] [stderr]    Compiling cc v1.0.79
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling ncurses v5.101.0
[INFO] [stderr]     Checking pancurses v0.17.0
[INFO] [stderr]     Checking snoyman-bouncy v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `option::IntoIter`
[INFO] [stdout]  --> src/main.rs:3:39
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{fmt::{Display, Formatter,}, option::IntoIter};
[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: `option::IntoIter`
[INFO] [stdout]  --> src/main.rs:3:39
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{fmt::{Display, Formatter,}, option::IntoIter};
[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 variable: `frame`
[INFO] [stdout]    --> src/main.rs:379:9
[INFO] [stdout]     |
[INFO] [stdout] 379 |     let frame = Frame{width: max_x as u32, height: max_y as u32};
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_frame`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `frame`
[INFO] [stdout]    --> src/main.rs:379:9
[INFO] [stdout]     |
[INFO] [stdout] 379 |     let frame = Frame{width: max_x as u32, height: max_y as u32};
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_frame`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `VertDir` is never used
[INFO] [stdout]   --> src/main.rs:82:6
[INFO] [stdout]    |
[INFO] [stdout] 82 | enum VertDir {
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `HorizDir` is never used
[INFO] [stdout]   --> src/main.rs:87:7
[INFO] [stdout]    |
[INFO] [stdout] 87 | enum  HorizDir {
[INFO] [stdout]    |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Ball` is never constructed
[INFO] [stdout]   --> src/main.rs:93:8
[INFO] [stdout]    |
[INFO] [stdout] 93 | struct Ball {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Frame` is never constructed
[INFO] [stdout]    --> src/main.rs:101:8
[INFO] [stdout]     |
[INFO] [stdout] 101 | struct Frame {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Game` is never constructed
[INFO] [stdout]    --> src/main.rs:106:8
[INFO] [stdout]     |
[INFO] [stdout] 106 | struct Game {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `mv`, and `step` are never used
[INFO] [stdout]    --> src/main.rs:112:8
[INFO] [stdout]     |
[INFO] [stdout] 111 | impl Game {
[INFO] [stdout]     | --------- associated items in this implementation
[INFO] [stdout] 112 |     fn new(frame: Frame) -> Game {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 124 |     fn mv(&mut self) {
[INFO] [stdout]     |        ^^
[INFO] [stdout] ...
[INFO] [stdout] 129 |     fn step(&mut self) {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `VertDir` is never used
[INFO] [stdout]   --> src/main.rs:82:6
[INFO] [stdout]    |
[INFO] [stdout] 82 | enum VertDir {
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `HorizDir` is never used
[INFO] [stdout]   --> src/main.rs:87:7
[INFO] [stdout]    |
[INFO] [stdout] 87 | enum  HorizDir {
[INFO] [stdout]    |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `bounce` and `mv` are never used
[INFO] [stdout]    --> src/main.rs:169:8
[INFO] [stdout]     |
[INFO] [stdout] 168 | impl Ball {
[INFO] [stdout]     | --------- methods in this implementation
[INFO] [stdout] 169 |     fn bounce(&mut self, frame: &Frame) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 183 |     fn mv(&mut self) {
[INFO] [stdout]     |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Empty` is never constructed
[INFO] [stdout]    --> src/main.rs:196:8
[INFO] [stdout]     |
[INFO] [stdout] 196 | struct Empty(u32);
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Ball` is never constructed
[INFO] [stdout]   --> src/main.rs:93:8
[INFO] [stdout]    |
[INFO] [stdout] 93 | struct Ball {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `OneToTen` is never constructed
[INFO] [stdout]    --> src/main.rs:207:8
[INFO] [stdout]     |
[INFO] [stdout] 207 | struct OneToTen(u32);
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Frame` is never constructed
[INFO] [stdout]    --> src/main.rs:101:8
[INFO] [stdout]     |
[INFO] [stdout] 101 | struct Frame {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `one_to_ten` is never used
[INFO] [stdout]    --> src/main.rs:209:4
[INFO] [stdout]     |
[INFO] [stdout] 209 | fn one_to_ten() -> OneToTen {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Game` is never constructed
[INFO] [stdout]    --> src/main.rs:106:8
[INFO] [stdout]     |
[INFO] [stdout] 106 | struct Game {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Fibonacci` is never constructed
[INFO] [stdout]    --> src/main.rs:227:8
[INFO] [stdout]     |
[INFO] [stdout] 227 | struct Fibonacci(u32, u32);
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fibo` is never used
[INFO] [stdout]    --> src/main.rs:229:4
[INFO] [stdout]     |
[INFO] [stdout] 229 | fn fibo() -> Fibonacci {
[INFO] [stdout]     |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Doubler` is never constructed
[INFO] [stdout]    --> src/main.rs:245:8
[INFO] [stdout]     |
[INFO] [stdout] 245 | struct Doubler<I> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `do_sum` is never used
[INFO] [stdout]    --> src/main.rs:260:4
[INFO] [stdout]     |
[INFO] [stdout] 260 | fn do_sum<I>(a:I, b:I) -> I 
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `mv`, and `step` are never used
[INFO] [stdout]    --> src/main.rs:112:8
[INFO] [stdout]     |
[INFO] [stdout] 111 | impl Game {
[INFO] [stdout]     | --------- associated items in this implementation
[INFO] [stdout] 112 |     fn new(frame: Frame) -> Game {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 124 |     fn mv(&mut self) {
[INFO] [stdout]     |        ^^
[INFO] [stdout] ...
[INFO] [stdout] 129 |     fn step(&mut self) {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `do_sum_fancy` is never used
[INFO] [stdout]    --> src/main.rs:266:4
[INFO] [stdout]     |
[INFO] [stdout] 266 | fn do_sum_fancy<I>(iter: I) -> I::Item
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `InfiniteUnit` is never constructed
[INFO] [stdout]    --> src/main.rs:274:8
[INFO] [stdout]     |
[INFO] [stdout] 274 | struct InfiniteUnit;
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `InfiniteUnitIter` is never constructed
[INFO] [stdout]    --> src/main.rs:286:8
[INFO] [stdout]     |
[INFO] [stdout] 286 | struct InfiniteUnitIter;
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `bounce` and `mv` are never used
[INFO] [stdout]    --> src/main.rs:169:8
[INFO] [stdout]     |
[INFO] [stdout] 168 | impl Ball {
[INFO] [stdout]     | --------- methods in this implementation
[INFO] [stdout] 169 |     fn bounce(&mut self, frame: &Frame) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 183 |     fn mv(&mut self) {
[INFO] [stdout]     |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `InfiniteUnit2` is never constructed
[INFO] [stdout]    --> src/main.rs:296:8
[INFO] [stdout]     |
[INFO] [stdout] 296 | struct InfiniteUnit2;
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Empty` is never constructed
[INFO] [stdout]    --> src/main.rs:196:8
[INFO] [stdout]     |
[INFO] [stdout] 196 | struct Empty(u32);
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main_iterators` is never used
[INFO] [stdout]    --> src/main.rs:308:4
[INFO] [stdout]     |
[INFO] [stdout] 308 | fn main_iterators() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `OneToTen` is never constructed
[INFO] [stdout]    --> src/main.rs:207:8
[INFO] [stdout]     |
[INFO] [stdout] 207 | struct OneToTen(u32);
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `one_to_ten` is never used
[INFO] [stdout]    --> src/main.rs:209:4
[INFO] [stdout]     |
[INFO] [stdout] 209 | fn one_to_ten() -> OneToTen {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main_iters` is never used
[INFO] [stdout]    --> src/main.rs:328:4
[INFO] [stdout]     |
[INFO] [stdout] 328 | fn main_iters() {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Fibonacci` is never constructed
[INFO] [stdout]    --> src/main.rs:227:8
[INFO] [stdout]     |
[INFO] [stdout] 227 | struct Fibonacci(u32, u32);
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main2` is never used
[INFO] [stdout]    --> src/main.rs:376:4
[INFO] [stdout]     |
[INFO] [stdout] 376 | fn main2() -> Result<(), ParseError>{
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ParseError` is never used
[INFO] [stdout]  --> src/parse_args.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum ParseError {
[INFO] [stdout]   |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fibo` is never used
[INFO] [stdout]    --> src/main.rs:229:4
[INFO] [stdout]     |
[INFO] [stdout] 229 | fn fibo() -> Fibonacci {
[INFO] [stdout]     |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Doubler` is never constructed
[INFO] [stdout]    --> src/main.rs:245:8
[INFO] [stdout]     |
[INFO] [stdout] 245 | struct Doubler<I> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ParseArgs` is never constructed
[INFO] [stdout]   --> src/parse_args.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct ParseArgs(std::env::Args);
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `do_sum` is never used
[INFO] [stdout]    --> src/main.rs:260:4
[INFO] [stdout]     |
[INFO] [stdout] 260 | fn do_sum<I>(a:I, b:I) -> I 
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `do_sum_fancy` is never used
[INFO] [stdout]    --> src/main.rs:266:4
[INFO] [stdout]     |
[INFO] [stdout] 266 | fn do_sum_fancy<I>(iter: I) -> I::Item
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `require_arg`, and `require_no_arg` are never used
[INFO] [stdout]   --> src/parse_args.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl ParseArgs {
[INFO] [stdout]    | -------------- associated items in this implementation
[INFO] [stdout] 13 |     pub fn new() -> ParseArgs {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub fn require_arg(&mut self) -> Result<String, ParseError> {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 24 |     pub fn require_no_arg(&mut self) -> Result<String, ParseError> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `InfiniteUnit` is never constructed
[INFO] [stdout]    --> src/main.rs:274:8
[INFO] [stdout]     |
[INFO] [stdout] 274 | struct InfiniteUnit;
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_u32` is never used
[INFO] [stdout]   --> src/parse_args.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn parse_u32(s: String) -> Result<u32, ParseError> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `InfiniteUnitIter` is never constructed
[INFO] [stdout]    --> src/main.rs:286:8
[INFO] [stdout]     |
[INFO] [stdout] 286 | struct InfiniteUnitIter;
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `InfiniteUnit2` is never constructed
[INFO] [stdout]    --> src/main.rs:296:8
[INFO] [stdout]     |
[INFO] [stdout] 296 | struct InfiniteUnit2;
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_args` is never used
[INFO] [stdout]   --> src/parse_args.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub fn parse_args() -> Result<(u32, u32), ParseError> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main_iterators` is never used
[INFO] [stdout]    --> src/main.rs:308:4
[INFO] [stdout]     |
[INFO] [stdout] 308 | fn main_iterators() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main_iters` is never used
[INFO] [stdout]    --> src/main.rs:328:4
[INFO] [stdout]     |
[INFO] [stdout] 328 | fn main_iters() {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main2` is never used
[INFO] [stdout]    --> src/main.rs:376:4
[INFO] [stdout]     |
[INFO] [stdout] 376 | fn main2() -> Result<(), ParseError>{
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ParseError` is never used
[INFO] [stdout]  --> src/parse_args.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum ParseError {
[INFO] [stdout]   |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ParseArgs` is never constructed
[INFO] [stdout]   --> src/parse_args.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct ParseArgs(std::env::Args);
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `require_arg`, and `require_no_arg` are never used
[INFO] [stdout]   --> src/parse_args.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl ParseArgs {
[INFO] [stdout]    | -------------- associated items in this implementation
[INFO] [stdout] 13 |     pub fn new() -> ParseArgs {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub fn require_arg(&mut self) -> Result<String, ParseError> {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 24 |     pub fn require_no_arg(&mut self) -> Result<String, ParseError> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_u32` is never used
[INFO] [stdout]   --> src/parse_args.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn parse_u32(s: String) -> Result<u32, ParseError> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_args` is never used
[INFO] [stdout]   --> src/parse_args.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub fn parse_args() -> Result<(u32, u32), ParseError> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.09s
[INFO] running `Command { std: "docker" "inspect" "eeb04449f171a37cb845631e47f6a20a860847ac53a70d6be6573ae4b09ce621", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eeb04449f171a37cb845631e47f6a20a860847ac53a70d6be6573ae4b09ce621", kill_on_drop: false }`
[INFO] [stdout] eeb04449f171a37cb845631e47f6a20a860847ac53a70d6be6573ae4b09ce621
