[INFO] cloning repository https://github.com/mzh-tbg/OCR-40-Algorithm-Challenges-Booklet--Rust-Edition-
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mzh-tbg/OCR-40-Algorithm-Challenges-Booklet--Rust-Edition-" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmzh-tbg%2FOCR-40-Algorithm-Challenges-Booklet--Rust-Edition-", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmzh-tbg%2FOCR-40-Algorithm-Challenges-Booklet--Rust-Edition-'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 61e440c1ce1d0c50ef0b39d08bb4023a2a46f6e8
[INFO] checking mzh-tbg/OCR-40-Algorithm-Challenges-Booklet--Rust-Edition- against master#068609ce766e55d2e7371cd2a86143a6d7e8e2e4 for pr-138952
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmzh-tbg%2FOCR-40-Algorithm-Challenges-Booklet--Rust-Edition-" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mzh-tbg/OCR-40-Algorithm-Challenges-Booklet--Rust-Edition- on toolchain 068609ce766e55d2e7371cd2a86143a6d7e8e2e4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+068609ce766e55d2e7371cd2a86143a6d7e8e2e4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mzh-tbg/OCR-40-Algorithm-Challenges-Booklet--Rust-Edition-
[INFO] finished tweaking git repo https://github.com/mzh-tbg/OCR-40-Algorithm-Challenges-Booklet--Rust-Edition-
[INFO] tweaked toml for git repo https://github.com/mzh-tbg/OCR-40-Algorithm-Challenges-Booklet--Rust-Edition- written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/mzh-tbg/OCR-40-Algorithm-Challenges-Booklet--Rust-Edition- 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" "+068609ce766e55d2e7371cd2a86143a6d7e8e2e4" "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
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded capitalize v0.3.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+068609ce766e55d2e7371cd2a86143a6d7e8e2e4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ede146cc01cc1dbb0b51d9aab581554ea6e66c368cff4173b93ad13beb6b2bec
[INFO] running `Command { std: "docker" "start" "-a" "ede146cc01cc1dbb0b51d9aab581554ea6e66c368cff4173b93ad13beb6b2bec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ede146cc01cc1dbb0b51d9aab581554ea6e66c368cff4173b93ad13beb6b2bec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ede146cc01cc1dbb0b51d9aab581554ea6e66c368cff4173b93ad13beb6b2bec", kill_on_drop: false }`
[INFO] [stdout] ede146cc01cc1dbb0b51d9aab581554ea6e66c368cff4173b93ad13beb6b2bec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+068609ce766e55d2e7371cd2a86143a6d7e8e2e4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f9506c3ef11c6e857a62b7797d98aeaeb6bfdaa30a7bc9c875110ebf35d9341d
[INFO] running `Command { std: "docker" "start" "-a" "f9506c3ef11c6e857a62b7797d98aeaeb6bfdaa30a7bc9c875110ebf35d9341d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking capitalize v0.3.4
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking ocr-40-algorithm-challenges-booklet-rust-edition v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `read_input::read_input`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use read_input::read_input;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_input` is never used
[INFO] [stdout]  --> src/read_input.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn read_input(prompt: &str) -> String {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `read_input::read_input`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use read_input::read_input;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_input` is never used
[INFO] [stdout]  --> src/read_input.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn read_input(prompt: &str) -> String {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.81s
[INFO] running `Command { std: "docker" "inspect" "f9506c3ef11c6e857a62b7797d98aeaeb6bfdaa30a7bc9c875110ebf35d9341d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9506c3ef11c6e857a62b7797d98aeaeb6bfdaa30a7bc9c875110ebf35d9341d", kill_on_drop: false }`
[INFO] [stdout] f9506c3ef11c6e857a62b7797d98aeaeb6bfdaa30a7bc9c875110ebf35d9341d