[INFO] updating cached repository franc90/rust_advent_of_code
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/franc90/rust_advent_of_code
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/franc90/rust_advent_of_code" "work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/franc90/rust_advent_of_code"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/franc90/rust_advent_of_code'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/franc90/rust_advent_of_code" "work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/franc90/rust_advent_of_code"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/franc90/rust_advent_of_code'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f415f6f625e4f00028e40b3ef716836f8a889b8a
[INFO] sha for GitHub repo franc90/rust_advent_of_code: f415f6f625e4f00028e40b3ef716836f8a889b8a
[INFO] validating manifest of franc90/rust_advent_of_code on toolchain master#435236b8877cdb98c82eaebfb7887782277265c5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of franc90/rust_advent_of_code on toolchain try#b5c7f157c20453dde8d47371abe73b32351b4e7f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing franc90/rust_advent_of_code
[INFO] finished frobbing franc90/rust_advent_of_code
[INFO] frobbed toml for franc90/rust_advent_of_code written to work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/franc90/rust_advent_of_code/Cargo.toml
[INFO] started frobbing franc90/rust_advent_of_code
[INFO] finished frobbing franc90/rust_advent_of_code
[INFO] frobbed toml for franc90/rust_advent_of_code written to work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/franc90/rust_advent_of_code/Cargo.toml
[INFO] crate franc90/rust_advent_of_code already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking franc90/rust_advent_of_code against try#b5c7f157c20453dde8d47371abe73b32351b4e7f for pr-62849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-3/try#b5c7f157c20453dde8d47371abe73b32351b4e7f:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/franc90/rust_advent_of_code:/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" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] cade4f826d2e28e5f7b2e95fb26be812767d755d7681cb9d10e83152178af40a
[INFO] running `"docker" "start" "-a" "cade4f826d2e28e5f7b2e95fb26be812767d755d7681cb9d10e83152178af40a"`
[INFO] [stderr]     Checking rust_advent_of_code v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `ex4`
[INFO] [stderr]   --> src/main.rs:20:1
[INFO] [stderr]    |
[INFO] [stderr] 20 | fn ex4() {
[INFO] [stderr]    | ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `ex4`
[INFO] [stderr]   --> src/main.rs:20:1
[INFO] [stderr] warning: variable `lineResult` should have a snake case name
[INFO] [stderr]  --> src/exercise5.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     for lineResult in f.lines() {
[INFO] [stderr]   |         ^^^^^^^^^^ help: convert the identifier to snake case: `line_result`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr]    |
[INFO] [stderr] 20 | fn ex4() {
[INFO] [stderr]    | ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `lineResult` should have a snake case name
[INFO] [stderr]  --> src/exercise5.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     for lineResult in f.lines() {
[INFO] [stderr]   |         ^^^^^^^^^^ help: convert the identifier to snake case: `line_result`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.66s
[INFO] running `"docker" "inspect" "cade4f826d2e28e5f7b2e95fb26be812767d755d7681cb9d10e83152178af40a"`
[INFO] running `"docker" "rm" "-f" "cade4f826d2e28e5f7b2e95fb26be812767d755d7681cb9d10e83152178af40a"`
[INFO] [stdout] cade4f826d2e28e5f7b2e95fb26be812767d755d7681cb9d10e83152178af40a