[INFO] cloning repository https://github.com/materialcontext/advent_of_code
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/materialcontext/advent_of_code" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaterialcontext%2Fadvent_of_code", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaterialcontext%2Fadvent_of_code'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 690066e965e72a6885d7f58593dc5c3fcac8a50a
[INFO] testing materialcontext/advent_of_code against master#733b47ea4b1b86216f14ef56e49440c33933f230+rustflags=-Copt-level=3 for pr-138759-retry
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaterialcontext%2Fadvent_of_code" "/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/materialcontext/advent_of_code
[INFO] finished tweaking git repo https://github.com/materialcontext/advent_of_code
[INFO] tweaked toml for git repo https://github.com/materialcontext/advent_of_code written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/materialcontext/advent_of_code on toolchain 733b47ea4b1b86216f14ef56e49440c33933f230
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/materialcontext/advent_of_code 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" "+733b47ea4b1b86216f14ef56e49440c33933f230" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4d3384f1802955c96e38f23a082f54e1b7cf37879d49dde0001797e218ed6109
[INFO] running `Command { std: "docker" "start" "-a" "4d3384f1802955c96e38f23a082f54e1b7cf37879d49dde0001797e218ed6109", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4d3384f1802955c96e38f23a082f54e1b7cf37879d49dde0001797e218ed6109", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d3384f1802955c96e38f23a082f54e1b7cf37879d49dde0001797e218ed6109", kill_on_drop: false }`
[INFO] [stdout] 4d3384f1802955c96e38f23a082f54e1b7cf37879d49dde0001797e218ed6109
[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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8c26205f1f56c0b002e29ededc6c4d1bf3af3a2ae6c0d8c26484a731404936cc
[INFO] running `Command { std: "docker" "start" "-a" "8c26205f1f56c0b002e29ededc6c4d1bf3af3a2ae6c0d8c26484a731404936cc", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling regex-syntax v0.7.4
[INFO] [stderr]    Compiling aho-corasick v1.0.2
[INFO] [stderr]    Compiling regex-automata v0.3.6
[INFO] [stderr]    Compiling regex v1.9.3
[INFO] [stderr]    Compiling advent_of_code v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/main.rs:475:35
[INFO] [stdout]     |
[INFO] [stdout] 475 |                         east.push(height);
[INFO] [stdout]     |                              ---- ^^^^^^ expected `Option<u8>`, found `u8`
[INFO] [stdout]     |                              |
[INFO] [stdout]     |                              arguments to this method are incorrect
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected enum `Option<u8>`
[INFO] [stdout]                found type `u8`
[INFO] [stdout] note: method defined here
[INFO] [stdout]    --> /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/alloc/src/vec/mod.rs:2474:12
[INFO] [stdout] help: try wrapping the expression in `Some`
[INFO] [stdout]     |
[INFO] [stdout] 475 |                         east.push(Some(height));
[INFO] [stdout]     |                                   +++++      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/main.rs:510:39
[INFO] [stdout]     |
[INFO] [stdout] 510 | ...                   east.push(height);
[INFO] [stdout]     |                            ---- ^^^^^^ expected `Option<u8>`, found `u8`
[INFO] [stdout]     |                            |
[INFO] [stdout]     |                            arguments to this method are incorrect
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected enum `Option<u8>`
[INFO] [stdout]                found type `u8`
[INFO] [stdout] note: method defined here
[INFO] [stdout]    --> /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/alloc/src/vec/mod.rs:2474:12
[INFO] [stdout] help: try wrapping the expression in `Some`
[INFO] [stdout]     |
[INFO] [stdout] 510 |                             east.push(Some(height));
[INFO] [stdout]     |                                       +++++      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/main.rs:515:39
[INFO] [stdout]     |
[INFO] [stdout] 515 | ...                   east.push(height);
[INFO] [stdout]     |                            ---- ^^^^^^ expected `Option<u8>`, found `u8`
[INFO] [stdout]     |                            |
[INFO] [stdout]     |                            arguments to this method are incorrect
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected enum `Option<u8>`
[INFO] [stdout]                found type `u8`
[INFO] [stdout] note: method defined here
[INFO] [stdout]    --> /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/alloc/src/vec/mod.rs:2474:12
[INFO] [stdout] help: try wrapping the expression in `Some`
[INFO] [stdout]     |
[INFO] [stdout] 515 |                             east.push(Some(height));
[INFO] [stdout]     |                                       +++++      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/main.rs:522:46
[INFO] [stdout]     |
[INFO] [stdout] 522 |                         east.retain(|&x| x > height);
[INFO] [stdout]     |                                          -   ^^^^^^ expected `Option<u8>`, found `u8`
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          expected because this is `Option<u8>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected enum `Option<u8>`
[INFO] [stdout]                found type `u8`
[INFO] [stdout] help: try wrapping the expression in `Some`
[INFO] [stdout]     |
[INFO] [stdout] 522 |                         east.retain(|&x| x > Some(height));
[INFO] [stdout]     |                                              +++++      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/main.rs:530:39
[INFO] [stdout]     |
[INFO] [stdout] 530 | ...                   east.push(height);
[INFO] [stdout]     |                            ---- ^^^^^^ expected `Option<u8>`, found `u8`
[INFO] [stdout]     |                            |
[INFO] [stdout]     |                            arguments to this method are incorrect
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected enum `Option<u8>`
[INFO] [stdout]                found type `u8`
[INFO] [stdout] note: method defined here
[INFO] [stdout]    --> /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/alloc/src/vec/mod.rs:2474:12
[INFO] [stdout] help: try wrapping the expression in `Some`
[INFO] [stdout]     |
[INFO] [stdout] 530 |                             east.push(Some(height));
[INFO] [stdout]     |                                       +++++      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/main.rs:535:39
[INFO] [stdout]     |
[INFO] [stdout] 535 | ...                   east.push(height);
[INFO] [stdout]     |                            ---- ^^^^^^ expected `Option<u8>`, found `u8`
[INFO] [stdout]     |                            |
[INFO] [stdout]     |                            arguments to this method are incorrect
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected enum `Option<u8>`
[INFO] [stdout]                found type `u8`
[INFO] [stdout] note: method defined here
[INFO] [stdout]    --> /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/alloc/src/vec/mod.rs:2474:12
[INFO] [stdout] help: try wrapping the expression in `Some`
[INFO] [stdout]     |
[INFO] [stdout] 535 |                             east.push(Some(height));
[INFO] [stdout]     |                                       +++++      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `advent_of_code` (bin "advent_of_code") due to 6 previous errors
[INFO] running `Command { std: "docker" "inspect" "8c26205f1f56c0b002e29ededc6c4d1bf3af3a2ae6c0d8c26484a731404936cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c26205f1f56c0b002e29ededc6c4d1bf3af3a2ae6c0d8c26484a731404936cc", kill_on_drop: false }`
[INFO] [stdout] 8c26205f1f56c0b002e29ededc6c4d1bf3af3a2ae6c0d8c26484a731404936cc