[INFO] cloning repository https://github.com/Dummi26/find_words_with_no_letters_in_common
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Dummi26/find_words_with_no_letters_in_common" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDummi26%2Ffind_words_with_no_letters_in_common", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDummi26%2Ffind_words_with_no_letters_in_common'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9217c786372d85c2a259c3477eaa91ac64cf33e0
[INFO] testing Dummi26/find_words_with_no_letters_in_common against try#bd7d74411512a3dd3b35d2f699c51dd2557c7e7e+cargoflags=-Zbuild-dir-new-layout for pr-149852-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDummi26%2Ffind_words_with_no_letters_in_common" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Dummi26/find_words_with_no_letters_in_common
[INFO] finished tweaking git repo https://github.com/Dummi26/find_words_with_no_letters_in_common
[INFO] tweaked toml for git repo https://github.com/Dummi26/find_words_with_no_letters_in_common written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Dummi26/find_words_with_no_letters_in_common on toolchain bd7d74411512a3dd3b35d2f699c51dd2557c7e7e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Dummi26/find_words_with_no_letters_in_common 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" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "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 Dummi26/find_words_with_no_letters_in_common against try#bd7d74411512a3dd3b35d2f699c51dd2557c7e7e+cargoflags=-Zbuild-dir-new-layout for pr-149852-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDummi26%2Ffind_words_with_no_letters_in_common" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Dummi26/find_words_with_no_letters_in_common
[INFO] finished tweaking git repo https://github.com/Dummi26/find_words_with_no_letters_in_common
[INFO] tweaked toml for git repo https://github.com/Dummi26/find_words_with_no_letters_in_common written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Dummi26/find_words_with_no_letters_in_common on toolchain bd7d74411512a3dd3b35d2f699c51dd2557c7e7e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Dummi26/find_words_with_no_letters_in_common 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" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cec7aaf9664e4f4d4e3da61fe81c34327146f1ea7630c2b53e09b13b65838ee4
[INFO] running `Command { std: "docker" "start" "-a" "cec7aaf9664e4f4d4e3da61fe81c34327146f1ea7630c2b53e09b13b65838ee4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cec7aaf9664e4f4d4e3da61fe81c34327146f1ea7630c2b53e09b13b65838ee4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cec7aaf9664e4f4d4e3da61fe81c34327146f1ea7630c2b53e09b13b65838ee4", kill_on_drop: false }`
[INFO] [stdout] cec7aaf9664e4f4d4e3da61fe81c34327146f1ea7630c2b53e09b13b65838ee4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "build" "--frozen" "--message-format=json" "-Zbuild-dir-new-layout", kill_on_drop: false }`
[INFO] [stdout] ee3830d3e54ecea4a1cf9f3a523db42ba74e57755ab100007ab8dfbf6926fbd9
[INFO] running `Command { std: "docker" "start" "-a" "ee3830d3e54ecea4a1cf9f3a523db42ba74e57755ab100007ab8dfbf6926fbd9", kill_on_drop: false }`
[INFO] [stderr]    Compiling find_words v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated items `empty`, `used_letters`, `has_no_duplicates`, and `as_u32` are never used
[INFO] [stdout]   --> src/word.rs:8:12
[INFO] [stdout]    |
[INFO] [stdout]  7 | impl Word {
[INFO] [stdout]    | --------- associated items in this implementation
[INFO] [stdout]  8 |     pub fn empty() -> Self {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |     pub fn used_letters(w1: &Self, w2: &Self, w3: &Self, w4: &Self, w5: &Self) -> u8 {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 60 |     pub fn has_no_duplicates(w1: &Self, w2: &Self, w3: &Self, w4: &Self, w5: &Self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 63 |     pub fn as_u32(&self) -> u32 {
[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 `get_letter` is never used
[INFO] [stdout]    --> src/word.rs:167:8
[INFO] [stdout]     |
[INFO] [stdout] 167 | pub fn get_letter(index: usize) -> char {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `letters` is never used
[INFO] [stdout]    --> src/word.rs:171:7
[INFO] [stdout]     |
[INFO] [stdout] 171 | const letters: [char;26] = ['a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'];
[INFO] [stdout]     |       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `W1` should have a snake case name
[INFO] [stdout]   --> src/main.rs:87:17
[INFO] [stdout]    |
[INFO] [stdout] 87 |             let W1 = Word::from_letters(w1.clone_letters());
[INFO] [stdout]    |                 ^^ help: convert the identifier to snake case (notice the capitalization): `w1`
[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 `W2` should have a snake case name
[INFO] [stdout]   --> src/main.rs:93:25
[INFO] [stdout]    |
[INFO] [stdout] 93 |                 let mut W2 = Word::from_letters(W1.clone_letters());
[INFO] [stdout]    |                         ^^ help: convert the identifier to snake case (notice the capitalization): `w2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `W3` should have a snake case name
[INFO] [stdout]    --> src/main.rs:100:33
[INFO] [stdout]     |
[INFO] [stdout] 100 |                         let mut W3 = Word::from_letters(W2.clone_letters());
[INFO] [stdout]     |                                 ^^ help: convert the identifier to snake case (notice the capitalization): `w3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `W4` should have a snake case name
[INFO] [stdout]    --> src/main.rs:107:41
[INFO] [stdout]     |
[INFO] [stdout] 107 | ...                   let mut W4 = Word::from_letters(W3.clone_letters());
[INFO] [stdout]     |                               ^^ help: convert the identifier to snake case (notice the capitalization): `w4`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `W5` should have a snake case name
[INFO] [stdout]    --> src/main.rs:114:49
[INFO] [stdout]     |
[INFO] [stdout] 114 | ...                   let mut W5 = Word::from_letters(W4.clone_letters());
[INFO] [stdout]     |                               ^^ help: convert the identifier to snake case (notice the capitalization): `w5`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/word.rs:130:9
[INFO] [stdout]     |
[INFO] [stdout] 130 |         write!(formatter, "{}", text);
[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] 130 |         let _ = write!(formatter, "{}", text);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `letters` should have an upper case name
[INFO] [stdout]    --> src/word.rs:171:7
[INFO] [stdout]     |
[INFO] [stdout] 171 | const letters: [char;26] = ['a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'];
[INFO] [stdout]     |       ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_upper_case_globals)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] help: convert the identifier to upper case
[INFO] [stdout]     |
[INFO] [stdout] 171 - const letters: [char;26] = ['a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'];
[INFO] [stdout] 171 + const LETTERS: [char;26] = ['a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'];
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `Command { std: "docker" "inspect" "ee3830d3e54ecea4a1cf9f3a523db42ba74e57755ab100007ab8dfbf6926fbd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee3830d3e54ecea4a1cf9f3a523db42ba74e57755ab100007ab8dfbf6926fbd9", kill_on_drop: false }`
[INFO] [stdout] ee3830d3e54ecea4a1cf9f3a523db42ba74e57755ab100007ab8dfbf6926fbd9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "test" "--frozen" "--no-run" "--message-format=json" "-Zbuild-dir-new-layout", kill_on_drop: false }`
[INFO] [stdout] a3e568a9675d60e0d4186e0602196e15868475debb927eb91a252dc57c09e13b
[INFO] running `Command { std: "docker" "start" "-a" "a3e568a9675d60e0d4186e0602196e15868475debb927eb91a252dc57c09e13b", kill_on_drop: false }`
[INFO] [stderr]    Compiling find_words v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated items `empty`, `used_letters`, `has_no_duplicates`, and `as_u32` are never used
[INFO] [stdout]   --> src/word.rs:8:12
[INFO] [stdout]    |
[INFO] [stdout]  7 | impl Word {
[INFO] [stdout]    | --------- associated items in this implementation
[INFO] [stdout]  8 |     pub fn empty() -> Self {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |     pub fn used_letters(w1: &Self, w2: &Self, w3: &Self, w4: &Self, w5: &Self) -> u8 {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 60 |     pub fn has_no_duplicates(w1: &Self, w2: &Self, w3: &Self, w4: &Self, w5: &Self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 63 |     pub fn as_u32(&self) -> u32 {
[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 `get_letter` is never used
[INFO] [stdout]    --> src/word.rs:167:8
[INFO] [stdout]     |
[INFO] [stdout] 167 | pub fn get_letter(index: usize) -> char {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `letters` is never used
[INFO] [stdout]    --> src/word.rs:171:7
[INFO] [stdout]     |
[INFO] [stdout] 171 | const letters: [char;26] = ['a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'];
[INFO] [stdout]     |       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `W1` should have a snake case name
[INFO] [stdout]   --> src/main.rs:87:17
[INFO] [stdout]    |
[INFO] [stdout] 87 |             let W1 = Word::from_letters(w1.clone_letters());
[INFO] [stdout]    |                 ^^ help: convert the identifier to snake case (notice the capitalization): `w1`
[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 `W2` should have a snake case name
[INFO] [stdout]   --> src/main.rs:93:25
[INFO] [stdout]    |
[INFO] [stdout] 93 |                 let mut W2 = Word::from_letters(W1.clone_letters());
[INFO] [stdout]    |                         ^^ help: convert the identifier to snake case (notice the capitalization): `w2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `W3` should have a snake case name
[INFO] [stdout]    --> src/main.rs:100:33
[INFO] [stdout]     |
[INFO] [stdout] 100 |                         let mut W3 = Word::from_letters(W2.clone_letters());
[INFO] [stdout]     |                                 ^^ help: convert the identifier to snake case (notice the capitalization): `w3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `W4` should have a snake case name
[INFO] [stdout]    --> src/main.rs:107:41
[INFO] [stdout]     |
[INFO] [stdout] 107 | ...                   let mut W4 = Word::from_letters(W3.clone_letters());
[INFO] [stdout]     |                               ^^ help: convert the identifier to snake case (notice the capitalization): `w4`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `W5` should have a snake case name
[INFO] [stdout]    --> src/main.rs:114:49
[INFO] [stdout]     |
[INFO] [stdout] 114 | ...                   let mut W5 = Word::from_letters(W4.clone_letters());
[INFO] [stdout]     |                               ^^ help: convert the identifier to snake case (notice the capitalization): `w5`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/word.rs:130:9
[INFO] [stdout]     |
[INFO] [stdout] 130 |         write!(formatter, "{}", text);
[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] 130 |         let _ = write!(formatter, "{}", text);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `letters` should have an upper case name
[INFO] [stdout]    --> src/word.rs:171:7
[INFO] [stdout]     |
[INFO] [stdout] 171 | const letters: [char;26] = ['a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'];
[INFO] [stdout]     |       ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_upper_case_globals)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] help: convert the identifier to upper case
[INFO] [stdout]     |
[INFO] [stdout] 171 - const letters: [char;26] = ['a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'];
[INFO] [stdout] 171 + const LETTERS: [char;26] = ['a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'];
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.37s
[INFO] running `Command { std: "docker" "inspect" "a3e568a9675d60e0d4186e0602196e15868475debb927eb91a252dc57c09e13b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3e568a9675d60e0d4186e0602196e15868475debb927eb91a252dc57c09e13b", kill_on_drop: false }`
[INFO] [stdout] a3e568a9675d60e0d4186e0602196e15868475debb927eb91a252dc57c09e13b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "test" "--frozen" "-Zbuild-dir-new-layout", kill_on_drop: false }`
[INFO] [stdout] da315d0db76b1deaa70fd53a61275492fa540e7b274f68d47aac3979831ee46e
[INFO] running `Command { std: "docker" "start" "-a" "da315d0db76b1deaa70fd53a61275492fa540e7b274f68d47aac3979831ee46e", kill_on_drop: false }`
[INFO] [stderr] warning: associated items `empty`, `used_letters`, `has_no_duplicates`, and `as_u32` are never used
[INFO] [stderr]   --> src/word.rs:8:12
[INFO] [stderr]    |
[INFO] [stderr]  7 | impl Word {
[INFO] [stderr]    | --------- associated items in this implementation
[INFO] [stderr]  8 |     pub fn empty() -> Self {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 51 |     pub fn used_letters(w1: &Self, w2: &Self, w3: &Self, w4: &Self, w5: &Self) -> u8 {
[INFO] [stderr]    |            ^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 60 |     pub fn has_no_duplicates(w1: &Self, w2: &Self, w3: &Self, w4: &Self, w5: &Self) -> bool {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 63 |     pub fn as_u32(&self) -> u32 {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `get_letter` is never used
[INFO] [stderr]    --> src/word.rs:167:8
[INFO] [stderr]     |
[INFO] [stderr] 167 | pub fn get_letter(index: usize) -> char {
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `letters` is never used
[INFO] [stderr]    --> src/word.rs:171:7
[INFO] [stderr]     |
[INFO] [stderr] 171 | const letters: [char;26] = ['a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'];
[INFO] [stderr]     |       ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable `W1` should have a snake case name
[INFO] [stderr]   --> src/main.rs:87:17
[INFO] [stderr]    |
[INFO] [stderr] 87 |             let W1 = Word::from_letters(w1.clone_letters());
[INFO] [stderr]    |                 ^^ help: convert the identifier to snake case (notice the capitalization): `w1`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `W2` should have a snake case name
[INFO] [stderr]   --> src/main.rs:93:25
[INFO] [stderr]    |
[INFO] [stderr] 93 |                 let mut W2 = Word::from_letters(W1.clone_letters());
[INFO] [stderr]    |                         ^^ help: convert the identifier to snake case (notice the capitalization): `w2`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `W3` should have a snake case name
[INFO] [stderr]    --> src/main.rs:100:33
[INFO] [stderr]     |
[INFO] [stderr] 100 |                         let mut W3 = Word::from_letters(W2.clone_letters());
[INFO] [stderr]     |                                 ^^ help: convert the identifier to snake case (notice the capitalization): `w3`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `W4` should have a snake case name
[INFO] [stderr]    --> src/main.rs:107:41
[INFO] [stderr]     |
[INFO] [stderr] 107 | ...                   let mut W4 = Word::from_letters(W3.clone_letters());
[INFO] [stderr]     |                               ^^ help: convert the identifier to snake case (notice the capitalization): `w4`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `W5` should have a snake case name
[INFO] [stderr]    --> src/main.rs:114:49
[INFO] [stderr]     |
[INFO] [stderr] 114 | ...                   let mut W5 = Word::from_letters(W4.clone_letters());
[INFO] [stderr]     |                               ^^ help: convert the identifier to snake case (notice the capitalization): `w5`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/word.rs:130:9
[INFO] [stderr]     |
[INFO] [stderr] 130 |         write!(formatter, "{}", text);
[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] 130 |         let _ = write!(formatter, "{}", text);
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: constant `letters` should have an upper case name
[INFO] [stderr]    --> src/word.rs:171:7
[INFO] [stderr]     |
[INFO] [stderr] 171 | const letters: [char;26] = ['a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'];
[INFO] [stderr]     |       ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_upper_case_globals)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stderr] help: convert the identifier to upper case
[INFO] [stderr]     |
[INFO] [stderr] 171 - const letters: [char;26] = ['a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'];
[INFO] [stderr] 171 + const LETTERS: [char;26] = ['a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'];
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: `find_words` (bin "find_words" test) generated 10 warnings (run `cargo fix --bin "find_words" -p find_words --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/build/find_words/8dc0d94f52a00870/deps/find_words-8dc0d94f52a00870)
[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" "da315d0db76b1deaa70fd53a61275492fa540e7b274f68d47aac3979831ee46e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da315d0db76b1deaa70fd53a61275492fa540e7b274f68d47aac3979831ee46e", kill_on_drop: false }`
[INFO] [stdout] da315d0db76b1deaa70fd53a61275492fa540e7b274f68d47aac3979831ee46e