[INFO] updating cached repository alightgoesout/advent2018
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/alightgoesout/advent2018
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/alightgoesout/advent2018" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/alightgoesout/advent2018"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/alightgoesout/advent2018'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/alightgoesout/advent2018" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/alightgoesout/advent2018"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/alightgoesout/advent2018'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] cb18b2d76519060763a897f3585ac0b14b45932d
[INFO] sha for GitHub repo alightgoesout/advent2018: cb18b2d76519060763a897f3585ac0b14b45932d
[INFO] validating manifest of alightgoesout/advent2018 on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of alightgoesout/advent2018 on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing alightgoesout/advent2018
[INFO] finished frobbing alightgoesout/advent2018
[INFO] frobbed toml for alightgoesout/advent2018 written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/alightgoesout/advent2018/Cargo.toml
[INFO] started frobbing alightgoesout/advent2018
[INFO] finished frobbing alightgoesout/advent2018
[INFO] frobbed toml for alightgoesout/advent2018 written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/alightgoesout/advent2018/Cargo.toml
[INFO] crate alightgoesout/advent2018 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking alightgoesout/advent2018 against master#60960a260f7b5c695fd0717311d72ce62dd4eb43 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-4/master#60960a260f7b5c695fd0717311d72ce62dd4eb43:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/alightgoesout/advent2018:/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" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] dbf5e41981ecf767dd16c4638a2717de2976aa4e9072d978757f12eac8a2646a
[INFO] running `"docker" "start" "-a" "dbf5e41981ecf767dd16c4638a2717de2976aa4e9072d978757f12eac8a2646a"`
[INFO] [stderr]     Checking advent v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/day2/find_similar_ids.rs:14:33
[INFO] [stderr]    |
[INFO] [stderr] 14 |                             let mut splitted_id = splitted_ids.get(i);
[INFO] [stderr]    |                                 ----^^^^^^^^^^^
[INFO] [stderr]    |                                 |
[INFO] [stderr]    |                                 help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/day2/find_similar_ids.rs:15:33
[INFO] [stderr]    |
[INFO] [stderr] 15 |                             let mut afters = splitted_id.get(before);
[INFO] [stderr]    |                                 ----^^^^^^
[INFO] [stderr]    |                                 |
[INFO] [stderr]    |                                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: static variable `claim_regex` should have an upper case name
[INFO] [stderr]   --> src/day3/claim.rs:13:16
[INFO] [stderr]    |
[INFO] [stderr] 13 |     static ref claim_regex: Regex =
[INFO] [stderr]    |                ^^^^^^^^^^^ help: convert the identifier to upper case: `CLAIM_REGEX`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/day2/find_similar_ids.rs:14:33
[INFO] [stderr]    |
[INFO] [stderr] 14 |                             let mut splitted_id = splitted_ids.get(i);
[INFO] [stderr]    |                                 ----^^^^^^^^^^^
[INFO] [stderr]    |                                 |
[INFO] [stderr]    |                                 help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/day2/find_similar_ids.rs:15:33
[INFO] [stderr]    |
[INFO] [stderr] 15 |                             let mut afters = splitted_id.get(before);
[INFO] [stderr]    |                                 ----^^^^^^
[INFO] [stderr]    |                                 |
[INFO] [stderr]    |                                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: static variable `claim_regex` should have an upper case name
[INFO] [stderr]   --> src/day3/claim.rs:13:16
[INFO] [stderr]    |
[INFO] [stderr] 13 |     static ref claim_regex: Regex =
[INFO] [stderr]    |                ^^^^^^^^^^^ help: convert the identifier to upper case: `CLAIM_REGEX`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.11s
[INFO] running `"docker" "inspect" "dbf5e41981ecf767dd16c4638a2717de2976aa4e9072d978757f12eac8a2646a"`
[INFO] running `"docker" "rm" "-f" "dbf5e41981ecf767dd16c4638a2717de2976aa4e9072d978757f12eac8a2646a"`
[INFO] [stdout] dbf5e41981ecf767dd16c4638a2717de2976aa4e9072d978757f12eac8a2646a