[INFO] cloning repository https://github.com/alice/aoc2021
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/alice/aoc2021" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falice%2Faoc2021", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falice%2Faoc2021'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d1c65cde5e04bfd26d8fecb321dedea11b94fb53
[INFO] checking alice/aoc2021 against master#e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682 for beta-170-4
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falice%2Faoc2021" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/alice/aoc2021 on toolchain e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/alice/aoc2021
[INFO] finished tweaking git repo https://github.com/alice/aoc2021
[INFO] tweaked toml for git repo https://github.com/alice/aoc2021 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/alice/aoc2021 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" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4a1f08d3e79722790ff290e093848e29a8aac4f06d097a1dfd66d84e191f9b74
[INFO] running `Command { std: "docker" "start" "-a" "4a1f08d3e79722790ff290e093848e29a8aac4f06d097a1dfd66d84e191f9b74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4a1f08d3e79722790ff290e093848e29a8aac4f06d097a1dfd66d84e191f9b74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a1f08d3e79722790ff290e093848e29a8aac4f06d097a1dfd66d84e191f9b74", kill_on_drop: false }`
[INFO] [stdout] 4a1f08d3e79722790ff290e093848e29a8aac4f06d097a1dfd66d84e191f9b74
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1ddc2bb39b31470d9a734059a06180b8259b727d23e19ce44ce0d5b66402dc37
[INFO] running `Command { std: "docker" "start" "-a" "1ddc2bb39b31470d9a734059a06180b8259b727d23e19ce44ce0d5b66402dc37", kill_on_drop: false }`
[INFO] [stderr]     Checking aoc2021 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: expected expression, found `let` statement
[INFO] [stdout]   --> src/day_08.rs:12:14
[INFO] [stdout]    |
[INFO] [stdout] 12 |         if !(let[input_str, output_str] = line.split(" | ").collect::<Vec<&str>>().as_slice()) {
[INFO] [stdout]    |              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected expression, found `let` statement
[INFO] [stdout]   --> src/day_08.rs:12:14
[INFO] [stdout]    |
[INFO] [stdout] 12 |         if !(let[input_str, output_str] = line.split(" | ").collect::<Vec<&str>>().as_slice()) {
[INFO] [stdout]    |              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `let` expressions are not supported here
[INFO] [stdout]   --> src/day_08.rs:12:14
[INFO] [stdout]    |
[INFO] [stdout] 12 |         if !(let[input_str, output_str] = line.split(" | ").collect::<Vec<&str>>().as_slice()) {
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: only supported directly in conditions of `if` and `while` expressions
[INFO] [stdout] note: `let`s wrapped in parentheses are not supported in a context with let chains
[INFO] [stdout]   --> src/day_08.rs:12:14
[INFO] [stdout]    |
[INFO] [stdout] 12 |         if !(let[input_str, output_str] = line.split(" | ").collect::<Vec<&str>>().as_slice()) {
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `let` expressions are not supported here
[INFO] [stdout]   --> src/day_08.rs:12:14
[INFO] [stdout]    |
[INFO] [stdout] 12 |         if !(let[input_str, output_str] = line.split(" | ").collect::<Vec<&str>>().as_slice()) {
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: only supported directly in conditions of `if` and `while` expressions
[INFO] [stdout] note: `let`s wrapped in parentheses are not supported in a context with let chains
[INFO] [stdout]   --> src/day_08.rs:12:14
[INFO] [stdout]    |
[INFO] [stdout] 12 |         if !(let[input_str, output_str] = line.split(" | ").collect::<Vec<&str>>().as_slice()) {
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `output_str` in this scope
[INFO] [stdout]   --> src/day_08.rs:16:36
[INFO] [stdout]    |
[INFO] [stdout] 16 |         let outputs: Vec<String> = output_str.split(" ").map(|s| s.to_string()).collect();
[INFO] [stdout]    |                                    ^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `output_str` in this scope
[INFO] [stdout]   --> src/day_08.rs:16:36
[INFO] [stdout]    |
[INFO] [stdout] 16 |         let outputs: Vec<String> = output_str.split(" ").map(|s| s.to_string()).collect();
[INFO] [stdout]    |                                    ^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `let` expressions in this position are unstable
[INFO] [stdout]   --> src/day_08.rs:12:14
[INFO] [stdout]    |
[INFO] [stdout] 12 |         if !(let[input_str, output_str] = line.split(" | ").collect::<Vec<&str>>().as_slice()) {
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
[INFO] [stdout]    = help: add `#![feature(let_chains)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `let` expressions in this position are unstable
[INFO] [stdout]   --> src/day_08.rs:12:14
[INFO] [stdout]    |
[INFO] [stdout] 12 |         if !(let[input_str, output_str] = line.split(" | ").collect::<Vec<&str>>().as_slice()) {
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
[INFO] [stdout]    = help: add `#![feature(let_chains)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `io_read_to_string` has been stable since 1.65.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(io_read_to_string)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `io_read_to_string` has been stable since 1.65.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(io_read_to_string)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0425, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0425, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `aoc2021` (bin "aoc2021" test) due to 5 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `aoc2021` (bin "aoc2021") due to 5 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "1ddc2bb39b31470d9a734059a06180b8259b727d23e19ce44ce0d5b66402dc37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ddc2bb39b31470d9a734059a06180b8259b727d23e19ce44ce0d5b66402dc37", kill_on_drop: false }`
[INFO] [stdout] 1ddc2bb39b31470d9a734059a06180b8259b727d23e19ce44ce0d5b66402dc37
