[INFO] cloning repository https://github.com/andywarduk/countdown_letters
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/andywarduk/countdown_letters" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fandywarduk%2Fcountdown_letters", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fandywarduk%2Fcountdown_letters'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 05c9422eee6b3cd70532461d1e45ec7a4ce1fe8e
[INFO] checking andywarduk/countdown_letters against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fandywarduk%2Fcountdown_letters" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/andywarduk/countdown_letters on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/andywarduk/countdown_letters
[INFO] finished tweaking git repo https://github.com/andywarduk/countdown_letters
[INFO] tweaked toml for git repo https://github.com/andywarduk/countdown_letters written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/andywarduk/countdown_letters 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/andywarduk/numformat.git`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 22ea7fd2200c046c25b1ad02ad3b10bf2752cb1bcbdd5bb789e8af6b499b6a5e
[INFO] running `Command { std: "docker" "start" "-a" "22ea7fd2200c046c25b1ad02ad3b10bf2752cb1bcbdd5bb789e8af6b499b6a5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "22ea7fd2200c046c25b1ad02ad3b10bf2752cb1bcbdd5bb789e8af6b499b6a5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22ea7fd2200c046c25b1ad02ad3b10bf2752cb1bcbdd5bb789e8af6b499b6a5e", kill_on_drop: false }`
[INFO] [stdout] 22ea7fd2200c046c25b1ad02ad3b10bf2752cb1bcbdd5bb789e8af6b499b6a5e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dfe2bdeb844e3f7bb496886a315e3ab09d6f9c43b5a2fcc18fd6914ae6fdd992
[INFO] running `Command { std: "docker" "start" "-a" "dfe2bdeb844e3f7bb496886a315e3ab09d6f9c43b5a2fcc18fd6914ae6fdd992", kill_on_drop: false }`
[INFO] [stderr]    Compiling crc32fast v1.4.0
[INFO] [stderr]     Checking encoding_rs v0.8.33
[INFO] [stderr]     Checking arrayvec v0.7.4
[INFO] [stderr]     Checking miniz_oxide v0.7.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling rustix v0.38.32
[INFO] [stderr]     Checking bitflags v2.5.0
[INFO] [stderr]    Compiling heck v0.5.0
[INFO] [stderr]     Checking clap_builder v4.5.2
[INFO] [stderr]     Checking flate2 v1.0.28
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.55
[INFO] [stderr]     Checking terminal_size v0.3.0
[INFO] [stderr]     Checking num-format v0.4.4
[INFO] [stderr]     Checking numformat v0.1.0 (https://github.com/andywarduk/numformat.git#72b8796f)
[INFO] [stderr]     Checking dictionary v0.1.0 (/opt/rustwide/workdir/dictionary)
[INFO] [stderr]     Checking solver v0.1.0 (/opt/rustwide/workdir/solver)
[INFO] [stdout] warning: the item `Dictionary` is imported redundantly
[INFO] [stdout]    --> solver/src/lib.rs:132:22
[INFO] [stdout]     |
[INFO] [stdout] 132 |     use dictionary::{Dictionary, LetterNext};
[INFO] [stdout]     |                      ^^^^^^^^^^
[INFO] [stdout] 133 |
[INFO] [stdout] 134 |     use super::*;
[INFO] [stdout]     |         -------- the item `Dictionary` is already imported here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `LetterNext` is imported redundantly
[INFO] [stdout]    --> solver/src/lib.rs:132:34
[INFO] [stdout]     |
[INFO] [stdout] 132 |     use dictionary::{Dictionary, LetterNext};
[INFO] [stdout]     |                                  ^^^^^^^^^^
[INFO] [stdout] 133 |
[INFO] [stdout] 134 |     use super::*;
[INFO] [stdout]     |         -------- the item `LetterNext` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling clap_derive v4.5.4
[INFO] [stderr]     Checking clap v4.5.4
[INFO] [stderr]     Checking solve v0.1.0 (/opt/rustwide/workdir/solve)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.31s
[INFO] running `Command { std: "docker" "inspect" "dfe2bdeb844e3f7bb496886a315e3ab09d6f9c43b5a2fcc18fd6914ae6fdd992", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfe2bdeb844e3f7bb496886a315e3ab09d6f9c43b5a2fcc18fd6914ae6fdd992", kill_on_drop: false }`
[INFO] [stdout] dfe2bdeb844e3f7bb496886a315e3ab09d6f9c43b5a2fcc18fd6914ae6fdd992