[INFO] updating cached repository rouillardm/adventofcode-rs-2018
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/rouillardm/adventofcode-rs-2018
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/rouillardm/adventofcode-rs-2018" "work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/rouillardm/adventofcode-rs-2018"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/rouillardm/adventofcode-rs-2018'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/rouillardm/adventofcode-rs-2018" "work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/rouillardm/adventofcode-rs-2018"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/rouillardm/adventofcode-rs-2018'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e290237cac3880de286c4e97b084065b1f8614b9
[INFO] sha for GitHub repo rouillardm/adventofcode-rs-2018: e290237cac3880de286c4e97b084065b1f8614b9
[INFO] validating manifest of rouillardm/adventofcode-rs-2018 on toolchain master#0f88167f89fffe321590c5148f21b7d51d44388d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of rouillardm/adventofcode-rs-2018 on toolchain try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing rouillardm/adventofcode-rs-2018
[INFO] finished frobbing rouillardm/adventofcode-rs-2018
[INFO] frobbed toml for rouillardm/adventofcode-rs-2018 written to work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/rouillardm/adventofcode-rs-2018/Cargo.toml
[INFO] started frobbing rouillardm/adventofcode-rs-2018
[INFO] finished frobbing rouillardm/adventofcode-rs-2018
[INFO] frobbed toml for rouillardm/adventofcode-rs-2018 written to work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/rouillardm/adventofcode-rs-2018/Cargo.toml
[INFO] crate rouillardm/adventofcode-rs-2018 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking rouillardm/adventofcode-rs-2018 against master#0f88167f89fffe321590c5148f21b7d51d44388d for pr-58948
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58948/worker-2/master#0f88167f89fffe321590c5148f21b7d51d44388d:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/rouillardm/adventofcode-rs-2018:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] d05b7e1e10854cceb0c43e4324987636d52d6b3fa673b6d24ee5f45a0d64de97
[INFO] running `"docker" "start" "-a" "d05b7e1e10854cceb0c43e4324987636d52d6b3fa673b6d24ee5f45a0d64de97"`
[INFO] [stderr]     Checking aoc_2018 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> src/main.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `regex::Regex`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use regex::Regex;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> src/main.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `regex::Regex`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use regex::Regex;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/main.rs:19:34
[INFO] [stderr]    |
[INFO] [stderr] 19 | fn day8_part1(input: &String) -> String {
[INFO] [stderr]    |    ----------                    ^^^^^^ expected struct `std::string::String`, found ()
[INFO] [stderr]    |    |
[INFO] [stderr]    |    this function's body doesn't return
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected type `std::string::String`
[INFO] [stderr]               found type `()`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0308`.
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/main.rs:19:34
[INFO] [stderr]    |
[INFO] [stderr] 19 | fn day8_part1(input: &String) -> String {
[INFO] [stderr]    |    ----------                    ^^^^^^ expected struct `std::string::String`, found ()
[INFO] [stderr]    |    |
[INFO] [stderr]    |    this function's body doesn't return
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected type `std::string::String`
[INFO] [stderr]               found type `()`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0308`.
[INFO] [stderr] error: Could not compile `aoc_2018`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: Could not compile `aoc_2018`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "d05b7e1e10854cceb0c43e4324987636d52d6b3fa673b6d24ee5f45a0d64de97"`
[INFO] running `"docker" "rm" "-f" "d05b7e1e10854cceb0c43e4324987636d52d6b3fa673b6d24ee5f45a0d64de97"`
[INFO] [stdout] d05b7e1e10854cceb0c43e4324987636d52d6b3fa673b6d24ee5f45a0d64de97