[INFO] cloning repository https://github.com/sethwbarton/rust-cheatsheet
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sethwbarton/rust-cheatsheet" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsethwbarton%2Frust-cheatsheet", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsethwbarton%2Frust-cheatsheet'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4dfad9ade79f99530c7ad0ff46b523e995918ef7
[INFO] testing sethwbarton/rust-cheatsheet against try#9f93af291970322f4f1c6315ccde4d7078201159 for pr-146098-6
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsethwbarton%2Frust-cheatsheet" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/sethwbarton/rust-cheatsheet
[INFO] finished tweaking git repo https://github.com/sethwbarton/rust-cheatsheet
[INFO] tweaked toml for git repo https://github.com/sethwbarton/rust-cheatsheet written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/sethwbarton/rust-cheatsheet on toolchain 9f93af291970322f4f1c6315ccde4d7078201159
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/sethwbarton/rust-cheatsheet 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" "+9f93af291970322f4f1c6315ccde4d7078201159" "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
[ERROR] error running command: no output for 300 seconds
[INFO] testing sethwbarton/rust-cheatsheet against try#9f93af291970322f4f1c6315ccde4d7078201159 for pr-146098-6
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsethwbarton%2Frust-cheatsheet" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/sethwbarton/rust-cheatsheet
[INFO] finished tweaking git repo https://github.com/sethwbarton/rust-cheatsheet
[INFO] tweaked toml for git repo https://github.com/sethwbarton/rust-cheatsheet written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/sethwbarton/rust-cheatsheet on toolchain 9f93af291970322f4f1c6315ccde4d7078201159
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/sethwbarton/rust-cheatsheet 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" "+9f93af291970322f4f1c6315ccde4d7078201159" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 969e6732a89b90a0ddbc46d902ccd395609071ba7ad3c1132c2f6bb14ccd1cf3
[INFO] running `Command { std: "docker" "start" "-a" "969e6732a89b90a0ddbc46d902ccd395609071ba7ad3c1132c2f6bb14ccd1cf3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "969e6732a89b90a0ddbc46d902ccd395609071ba7ad3c1132c2f6bb14ccd1cf3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "969e6732a89b90a0ddbc46d902ccd395609071ba7ad3c1132c2f6bb14ccd1cf3", kill_on_drop: false }`
[INFO] [stdout] 969e6732a89b90a0ddbc46d902ccd395609071ba7ad3c1132c2f6bb14ccd1cf3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b1b35d1c3778d51033130d68982b64cb39aadfbde7b8fdf340ad6e400c280ba3
[INFO] running `Command { std: "docker" "start" "-a" "b1b35d1c3778d51033130d68982b64cb39aadfbde7b8fdf340ad6e400c280ba3", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-cheatsheet v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]   --> src/reading_files.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 |         Ok(size) => {}
[INFO] [stdout]    |            ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/reading_files.rs:16:13
[INFO] [stdout]    |
[INFO] [stdout] 16 |         Err(e) => println!("Ate an error from writing to the file."),
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SomePrivateType` is never constructed
[INFO] [stdout]   --> src/some_module/some_sub_module.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     struct SomePrivateType {}
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `inputSize` should have a snake case name
[INFO] [stdout]   --> src/reading_files.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 |         Ok(inputSize) => {
[INFO] [stdout]    |            ^^^^^^^^^ help: convert the identifier to snake case: `input_size`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let mut aSquare = Rectangle::square(15);
[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: `a_struct`
[INFO] [stdout]   --> src/main.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let a_struct = SomeType {};
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_a_struct`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `walt_disney_age`
[INFO] [stdout]   --> src/main.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let walt_disney_age: i128 = 122; // Rust convention is to use snake_case.
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_walt_disney_age`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `is_older_than_walt`
[INFO] [stdout]   --> src/main.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let is_older_than_walt: bool = false;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_older_than_walt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `disney_viewers_as_us_pop_percentage`
[INFO] [stdout]   --> src/main.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let disney_viewers_as_us_pop_percentage: f64 = 70.0;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_disney_viewers_as_us_pop_percentage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `area`
[INFO] [stdout]   --> src/main.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let area = my_rectangle.area();
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_area`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `aSquare`
[INFO] [stdout]   --> src/main.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let mut aSquare = Rectangle::square(15);
[INFO] [stdout]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_aSquare`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `myIpKind`
[INFO] [stdout]   --> src/main.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let myIpKind = IpAddrKind::V4;
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_myIpKind`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `V6` is never constructed
[INFO] [stdout]    --> src/main.rs:167:5
[INFO] [stdout]     |
[INFO] [stdout] 165 | enum IpAddrKind {
[INFO] [stdout]     |      ---------- variant in this enum
[INFO] [stdout] 166 |     V4,
[INFO] [stdout] 167 |     V6,
[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 `Coin` is never used
[INFO] [stdout]    --> src/main.rs:170:6
[INFO] [stdout]     |
[INFO] [stdout] 170 | enum Coin {
[INFO] [stdout]     |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `value_in_cents` is never used
[INFO] [stdout]    --> src/main.rs:177:4
[INFO] [stdout]     |
[INFO] [stdout] 177 | fn value_in_cents(coin: Coin) -> u8 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `aSquare` should have a snake case name
[INFO] [stdout]   --> src/main.rs:48:13
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let mut aSquare = Rectangle::square(15);
[INFO] [stdout]    |             ^^^^^^^ help: convert the identifier to snake case: `a_square`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `myIpKind` should have a snake case name
[INFO] [stdout]   --> src/main.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let myIpKind = IpAddrKind::V4;
[INFO] [stdout]    |         ^^^^^^^^ help: convert the identifier to snake case: `my_ip_kind`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.27s
[INFO] running `Command { std: "docker" "inspect" "b1b35d1c3778d51033130d68982b64cb39aadfbde7b8fdf340ad6e400c280ba3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b1b35d1c3778d51033130d68982b64cb39aadfbde7b8fdf340ad6e400c280ba3", kill_on_drop: false }`
[INFO] [stdout] b1b35d1c3778d51033130d68982b64cb39aadfbde7b8fdf340ad6e400c280ba3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 03794cd7b013399107e78274c944140cdf3eb7802d82a8166f9012b2a2d80a6a
[INFO] running `Command { std: "docker" "start" "-a" "03794cd7b013399107e78274c944140cdf3eb7802d82a8166f9012b2a2d80a6a", kill_on_drop: false }`
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]   --> src/reading_files.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 |         Ok(size) => {}
[INFO] [stdout]    |            ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/reading_files.rs:16:13
[INFO] [stdout]    |
[INFO] [stdout] 16 |         Err(e) => println!("Ate an error from writing to the file."),
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rust-cheatsheet v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `SomePrivateType` is never constructed
[INFO] [stdout]   --> src/some_module/some_sub_module.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     struct SomePrivateType {}
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `inputSize` should have a snake case name
[INFO] [stdout]   --> src/reading_files.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 |         Ok(inputSize) => {
[INFO] [stdout]    |            ^^^^^^^^^ help: convert the identifier to snake case: `input_size`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let mut aSquare = Rectangle::square(15);
[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: `a_struct`
[INFO] [stdout]   --> src/main.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let a_struct = SomeType {};
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_a_struct`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `walt_disney_age`
[INFO] [stdout]   --> src/main.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let walt_disney_age: i128 = 122; // Rust convention is to use snake_case.
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_walt_disney_age`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `is_older_than_walt`
[INFO] [stdout]   --> src/main.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let is_older_than_walt: bool = false;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_older_than_walt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `disney_viewers_as_us_pop_percentage`
[INFO] [stdout]   --> src/main.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let disney_viewers_as_us_pop_percentage: f64 = 70.0;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_disney_viewers_as_us_pop_percentage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `area`
[INFO] [stdout]   --> src/main.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let area = my_rectangle.area();
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_area`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `aSquare`
[INFO] [stdout]   --> src/main.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let mut aSquare = Rectangle::square(15);
[INFO] [stdout]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_aSquare`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `myIpKind`
[INFO] [stdout]   --> src/main.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let myIpKind = IpAddrKind::V4;
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_myIpKind`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `V6` is never constructed
[INFO] [stdout]    --> src/main.rs:167:5
[INFO] [stdout]     |
[INFO] [stdout] 165 | enum IpAddrKind {
[INFO] [stdout]     |      ---------- variant in this enum
[INFO] [stdout] 166 |     V4,
[INFO] [stdout] 167 |     V6,
[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 `Coin` is never used
[INFO] [stdout]    --> src/main.rs:170:6
[INFO] [stdout]     |
[INFO] [stdout] 170 | enum Coin {
[INFO] [stdout]     |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `value_in_cents` is never used
[INFO] [stdout]    --> src/main.rs:177:4
[INFO] [stdout]     |
[INFO] [stdout] 177 | fn value_in_cents(coin: Coin) -> u8 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `aSquare` should have a snake case name
[INFO] [stdout]   --> src/main.rs:48:13
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let mut aSquare = Rectangle::square(15);
[INFO] [stdout]    |             ^^^^^^^ help: convert the identifier to snake case: `a_square`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `myIpKind` should have a snake case name
[INFO] [stdout]   --> src/main.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let myIpKind = IpAddrKind::V4;
[INFO] [stdout]    |         ^^^^^^^^ help: convert the identifier to snake case: `my_ip_kind`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let mut aSquare = Rectangle::square(15);
[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: `a_struct`
[INFO] [stdout]   --> src/main.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let a_struct = SomeType {};
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_a_struct`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `walt_disney_age`
[INFO] [stdout]   --> src/main.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let walt_disney_age: i128 = 122; // Rust convention is to use snake_case.
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_walt_disney_age`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `is_older_than_walt`
[INFO] [stdout]   --> src/main.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let is_older_than_walt: bool = false;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_older_than_walt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `disney_viewers_as_us_pop_percentage`
[INFO] [stdout]   --> src/main.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let disney_viewers_as_us_pop_percentage: f64 = 70.0;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_disney_viewers_as_us_pop_percentage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `area`
[INFO] [stdout]   --> src/main.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let area = my_rectangle.area();
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_area`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `aSquare`
[INFO] [stdout]   --> src/main.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let mut aSquare = Rectangle::square(15);
[INFO] [stdout]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_aSquare`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `myIpKind`
[INFO] [stdout]   --> src/main.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let myIpKind = IpAddrKind::V4;
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_myIpKind`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `V6` is never constructed
[INFO] [stdout]    --> src/main.rs:167:5
[INFO] [stdout]     |
[INFO] [stdout] 165 | enum IpAddrKind {
[INFO] [stdout]     |      ---------- variant in this enum
[INFO] [stdout] 166 |     V4,
[INFO] [stdout] 167 |     V6,
[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 `Coin` is never used
[INFO] [stdout]    --> src/main.rs:170:6
[INFO] [stdout]     |
[INFO] [stdout] 170 | enum Coin {
[INFO] [stdout]     |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `value_in_cents` is never used
[INFO] [stdout]    --> src/main.rs:177:4
[INFO] [stdout]     |
[INFO] [stdout] 177 | fn value_in_cents(coin: Coin) -> u8 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]   --> src/reading_files.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 |         Ok(size) => {}
[INFO] [stdout]    |            ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `aSquare` should have a snake case name
[INFO] [stdout]   --> src/main.rs:48:13
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let mut aSquare = Rectangle::square(15);
[INFO] [stdout]    |             ^^^^^^^ help: convert the identifier to snake case: `a_square`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `myIpKind` should have a snake case name
[INFO] [stdout]   --> src/main.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let myIpKind = IpAddrKind::V4;
[INFO] [stdout]    |         ^^^^^^^^ help: convert the identifier to snake case: `my_ip_kind`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/reading_files.rs:16:13
[INFO] [stdout]    |
[INFO] [stdout] 16 |         Err(e) => println!("Ate an error from writing to the file."),
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SomePrivateType` is never constructed
[INFO] [stdout]   --> src/some_module/some_sub_module.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     struct SomePrivateType {}
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `inputSize` should have a snake case name
[INFO] [stdout]   --> src/reading_files.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 |         Ok(inputSize) => {
[INFO] [stdout]    |            ^^^^^^^^^ help: convert the identifier to snake case: `input_size`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "03794cd7b013399107e78274c944140cdf3eb7802d82a8166f9012b2a2d80a6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03794cd7b013399107e78274c944140cdf3eb7802d82a8166f9012b2a2d80a6a", kill_on_drop: false }`
[INFO] [stdout] 03794cd7b013399107e78274c944140cdf3eb7802d82a8166f9012b2a2d80a6a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9c6ec177d96c1be1a68e6778ea9b1d056288be6432dfa8ac08e37665d537dcc3
[INFO] running `Command { std: "docker" "start" "-a" "9c6ec177d96c1be1a68e6778ea9b1d056288be6432dfa8ac08e37665d537dcc3", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `size`
[INFO] [stderr]   --> src/reading_files.rs:15:12
[INFO] [stderr]    |
[INFO] [stderr] 15 |         Ok(size) => {}
[INFO] [stderr]    |            ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/reading_files.rs:16:13
[INFO] [stderr]    |
[INFO] [stderr] 16 |         Err(e) => println!("Ate an error from writing to the file."),
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr] warning: struct `SomePrivateType` is never constructed
[INFO] [stderr]   --> src/some_module/some_sub_module.rs:12:12
[INFO] [stderr]    |
[INFO] [stderr] 12 |     struct SomePrivateType {}
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `inputSize` should have a snake case name
[INFO] [stderr]   --> src/reading_files.rs:28:12
[INFO] [stderr]    |
[INFO] [stderr] 28 |         Ok(inputSize) => {
[INFO] [stderr]    |            ^^^^^^^^^ help: convert the identifier to snake case: `input_size`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-cheatsheet` (lib) generated 4 warnings (run `cargo fix --lib -p rust-cheatsheet` to apply 2 suggestions)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:48:9
[INFO] [stderr]    |
[INFO] [stderr] 48 |     let mut aSquare = Rectangle::square(15);
[INFO] [stderr]    |         ----^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a_struct`
[INFO] [stderr]   --> src/main.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 |     let a_struct = SomeType {};
[INFO] [stderr]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_a_struct`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `walt_disney_age`
[INFO] [stderr]   --> src/main.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |     let walt_disney_age: i128 = 122; // Rust convention is to use snake_case.
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_walt_disney_age`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `is_older_than_walt`
[INFO] [stderr]   --> src/main.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |     let is_older_than_walt: bool = false;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_older_than_walt`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `disney_viewers_as_us_pop_percentage`
[INFO] [stderr]   --> src/main.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |     let disney_viewers_as_us_pop_percentage: f64 = 70.0;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_disney_viewers_as_us_pop_percentage`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `area`
[INFO] [stderr]   --> src/main.rs:44:9
[INFO] [stderr]    |
[INFO] [stderr] 44 |     let area = my_rectangle.area();
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_area`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `aSquare`
[INFO] [stderr]   --> src/main.rs:48:9
[INFO] [stderr]    |
[INFO] [stderr] 48 |     let mut aSquare = Rectangle::square(15);
[INFO] [stderr]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_aSquare`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `myIpKind`
[INFO] [stderr]   --> src/main.rs:51:9
[INFO] [stderr]    |
[INFO] [stdout] 
[INFO] [stderr] 51 |     let myIpKind = IpAddrKind::V4;
[INFO] [stdout] running 0 tests
[INFO] [stderr]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_myIpKind`
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] warning: variant `V6` is never constructed
[INFO] [stdout] 
[INFO] [stderr]    --> src/main.rs:167:5
[INFO] [stderr]     |
[INFO] [stderr] 165 | enum IpAddrKind {
[INFO] [stderr]     |      ---------- variant in this enum
[INFO] [stderr] 166 |     V4,
[INFO] [stderr] 167 |     V6,
[INFO] [stderr]     |     ^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Coin` is never used
[INFO] [stderr]    --> src/main.rs:170:6
[INFO] [stderr]     |
[INFO] [stderr] 170 | enum Coin {
[INFO] [stderr]     |      ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `value_in_cents` is never used
[INFO] [stdout] 
[INFO] [stderr]    --> src/main.rs:177:4
[INFO] [stdout] running 0 tests
[INFO] [stderr]     |
[INFO] [stdout] 
[INFO] [stderr] 177 | fn value_in_cents(coin: Coin) -> u8 {
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stderr] warning: variable `aSquare` should have a snake case name
[INFO] [stderr]   --> src/main.rs:48:13
[INFO] [stderr]    |
[INFO] [stderr] 48 |     let mut aSquare = Rectangle::square(15);
[INFO] [stderr]    |             ^^^^^^^ help: convert the identifier to snake case: `a_square`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `myIpKind` should have a snake case name
[INFO] [stderr]   --> src/main.rs:51:9
[INFO] [stderr]    |
[INFO] [stderr] 51 |     let myIpKind = IpAddrKind::V4;
[INFO] [stderr]    |         ^^^^^^^^ help: convert the identifier to snake case: `my_ip_kind`
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-cheatsheet` (bin "rust-cheatsheet") generated 13 warnings (run `cargo fix --bin "rust-cheatsheet" -p rust-cheatsheet` to apply 8 suggestions)
[INFO] [stderr] warning: `rust-cheatsheet` (bin "rust-cheatsheet" test) generated 13 warnings (13 duplicates)
[INFO] [stderr] warning: `rust-cheatsheet` (lib test) generated 4 warnings (4 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rust_cheatsheet-92d5b969484d33a8)
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_cheatsheet-7c11f36e8ae467cb)
[INFO] [stderr]      Running tests/adding.rs (/opt/rustwide/target/debug/deps/adding-e80d0a580abd3506)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test adds_two_numbers ... ok
[INFO] [stderr]    Doc-tests rust_cheatsheet
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 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" "9c6ec177d96c1be1a68e6778ea9b1d056288be6432dfa8ac08e37665d537dcc3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c6ec177d96c1be1a68e6778ea9b1d056288be6432dfa8ac08e37665d537dcc3", kill_on_drop: false }`
[INFO] [stdout] 9c6ec177d96c1be1a68e6778ea9b1d056288be6432dfa8ac08e37665d537dcc3