[INFO] cloning repository https://github.com/davidneumann/rust-glyph-recog
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/davidneumann/rust-glyph-recog" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidneumann%2Frust-glyph-recog", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidneumann%2Frust-glyph-recog'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2f1f404075b430fea57fc19a745635fbd22215db
[INFO] checking davidneumann/rust-glyph-recog against master#a5f164faad4a2fed606b8160fd7ecd2d5cbba381 for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidneumann%2Frust-glyph-recog" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/davidneumann/rust-glyph-recog on toolchain a5f164faad4a2fed606b8160fd7ecd2d5cbba381
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/davidneumann/rust-glyph-recog
[INFO] finished tweaking git repo https://github.com/davidneumann/rust-glyph-recog
[INFO] tweaked toml for git repo https://github.com/davidneumann/rust-glyph-recog written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/davidneumann/rust-glyph-recog already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f9c31b3a37f5a8487b165898c9ceee6f418c8a36a2bb327151af60468e12776f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f9c31b3a37f5a8487b165898c9ceee6f418c8a36a2bb327151af60468e12776f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f9c31b3a37f5a8487b165898c9ceee6f418c8a36a2bb327151af60468e12776f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9c31b3a37f5a8487b165898c9ceee6f418c8a36a2bb327151af60468e12776f", kill_on_drop: false }`
[INFO] [stdout] f9c31b3a37f5a8487b165898c9ceee6f418c8a36a2bb327151af60468e12776f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 11fb095eab6baf43a2717f9cea42ee80f3caa050baeec5d850bc7b97edf32bd9
[INFO] running `Command { std: "docker" "start" "-a" "11fb095eab6baf43a2717f9cea42ee80f3caa050baeec5d850bc7b97edf32bd9", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.4
[INFO] [stderr]     Checking crossbeam-epoch v0.9.4
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking rayon-core v1.9.0
[INFO] [stderr]     Checking rayon v1.5.0
[INFO] [stderr]     Checking rust-glyph-recog v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/main.rs:88:5
[INFO] [stdout]    |
[INFO] [stdout] 86 |     panic!();
[INFO] [stdout]    |     --------- any code following this expression is unreachable
[INFO] [stdout] 87 | 
[INFO] [stdout] 88 |     let start = Instant::now();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/main.rs:88:5
[INFO] [stdout]    |
[INFO] [stdout] 86 |     panic!();
[INFO] [stdout]    |     --------- any code following this expression is unreachable
[INFO] [stdout] 87 | 
[INFO] [stdout] 88 |     let start = Instant::now();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dirs`
[INFO] [stdout]   --> src/main.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let dirs:Vec<std::path::PathBuf> = fs::read_dir(input2).unwrap()
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_dirs`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dirs`
[INFO] [stdout]   --> src/main.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let dirs:Vec<std::path::PathBuf> = fs::read_dir(input2).unwrap()
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_dirs`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `min_height`
[INFO] [stdout]  --> src/glyph_dataset.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     min_height: u8,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_rays`
[INFO] [stdout]    --> src/main.rs:266:8
[INFO] [stdout]     |
[INFO] [stdout] 266 |     fn print_rays(rays: &GlyphRays) -> () {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `min_height`
[INFO] [stdout]  --> src/glyph_dataset.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     min_height: u8,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_rays`
[INFO] [stdout]    --> src/main.rs:266:8
[INFO] [stdout]     |
[INFO] [stdout] 266 |     fn print_rays(rays: &GlyphRays) -> () {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.06s
[INFO] running `Command { std: "docker" "inspect" "11fb095eab6baf43a2717f9cea42ee80f3caa050baeec5d850bc7b97edf32bd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11fb095eab6baf43a2717f9cea42ee80f3caa050baeec5d850bc7b97edf32bd9", kill_on_drop: false }`
[INFO] [stdout] 11fb095eab6baf43a2717f9cea42ee80f3caa050baeec5d850bc7b97edf32bd9