[INFO] updating cached repository sremedios/adventofcode2018
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/sremedios/adventofcode2018
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/sremedios/adventofcode2018" "work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/sremedios/adventofcode2018"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/sremedios/adventofcode2018'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/sremedios/adventofcode2018" "work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/sremedios/adventofcode2018"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/sremedios/adventofcode2018'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d477ed413d5198666ca1ffb1357a44d232796600
[INFO] sha for GitHub repo sremedios/adventofcode2018: d477ed413d5198666ca1ffb1357a44d232796600
[INFO] validating manifest of sremedios/adventofcode2018 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 sremedios/adventofcode2018 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 sremedios/adventofcode2018
[INFO] finished frobbing sremedios/adventofcode2018
[INFO] frobbed toml for sremedios/adventofcode2018 written to work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/sremedios/adventofcode2018/Cargo.toml
[INFO] started frobbing sremedios/adventofcode2018
[INFO] finished frobbing sremedios/adventofcode2018
[INFO] frobbed toml for sremedios/adventofcode2018 written to work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/sremedios/adventofcode2018/Cargo.toml
[INFO] crate sremedios/adventofcode2018 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 sremedios/adventofcode2018 against master#0f88167f89fffe321590c5148f21b7d51d44388d for pr-58948
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58948/worker-7/master#0f88167f89fffe321590c5148f21b7d51d44388d:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/sremedios/adventofcode2018:/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] 9160f458da6054833943bf237a972d5f7b09bc112609e92f57d9be3f5972976c
[INFO] running `"docker" "start" "-a" "9160f458da6054833943bf237a972d5f7b09bc112609e92f57d9be3f5972976c"`
[INFO] [stderr]     Checking id_tree v1.3.0
[INFO] [stderr]     Checking adventofcode2018 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> src/day_08.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `BufReader`
[INFO] [stderr]  --> src/day_08.rs:3:30
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::io::{self, BufRead, BufReader};
[INFO] [stderr]   |                              ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> src/day_08.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `BufReader`
[INFO] [stderr]  --> src/day_08.rs:3:30
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::io::{self, BufRead, BufReader};
[INFO] [stderr]   |                              ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `BufRead`
[INFO] [stderr]  --> src/day_08.rs:3:21
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::io::{self, BufRead, BufReader};
[INFO] [stderr]   |                     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `filename`
[INFO] [stderr]   --> src/day_07.rs:66:15
[INFO] [stderr]    |
[INFO] [stderr] 66 | pub fn part_2(filename: &str) -> Result<String, io::Error> {
[INFO] [stderr]    |               ^^^^^^^^ help: consider prefixing with an underscore: `_filename`
[INFO] [stderr] warning: unused import: `BufRead`
[INFO] [stderr]  --> src/day_08.rs:3:21
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::io::{self, BufRead, BufReader};
[INFO] [stderr]   |                     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `item`
[INFO] [stderr]   --> src/day_08.rs:34:17
[INFO] [stderr]    |
[INFO] [stderr] 34 |             for item in 0..num_metadata {
[INFO] [stderr]    |                 ^^^^ help: consider prefixing with an underscore: `_item`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `filename`
[INFO] [stderr]   --> src/day_08.rs:53:15
[INFO] [stderr]    |
[INFO] [stderr] 53 | pub fn part_2(filename: &str) -> Result<String, io::Error> {
[INFO] [stderr]    |               ^^^^^^^^ help: consider prefixing with an underscore: `_filename`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `filename`
[INFO] [stderr]   --> src/day_07.rs:66:15
[INFO] [stderr]    |
[INFO] [stderr] 66 | pub fn part_2(filename: &str) -> Result<String, io::Error> {
[INFO] [stderr]    |               ^^^^^^^^ help: consider prefixing with an underscore: `_filename`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `item`
[INFO] [stderr]   --> src/day_08.rs:34:17
[INFO] [stderr]    |
[INFO] [stderr] 34 |             for item in 0..num_metadata {
[INFO] [stderr]    |                 ^^^^ help: consider prefixing with an underscore: `_item`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `filename`
[INFO] [stderr]   --> src/day_08.rs:53:15
[INFO] [stderr]    |
[INFO] [stderr] 53 | pub fn part_2(filename: &str) -> Result<String, io::Error> {
[INFO] [stderr]    |               ^^^^^^^^ help: consider prefixing with an underscore: `_filename`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.67s
[INFO] running `"docker" "inspect" "9160f458da6054833943bf237a972d5f7b09bc112609e92f57d9be3f5972976c"`
[INFO] running `"docker" "rm" "-f" "9160f458da6054833943bf237a972d5f7b09bc112609e92f57d9be3f5972976c"`
[INFO] [stdout] 9160f458da6054833943bf237a972d5f7b09bc112609e92f57d9be3f5972976c