[INFO] updating cached repository tony612/adventureofcode
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/tony612/adventureofcode
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/tony612/adventureofcode" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/tony612/adventureofcode"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/tony612/adventureofcode'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/tony612/adventureofcode" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/tony612/adventureofcode"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/tony612/adventureofcode'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e91e9cec8e04cc75fd1443baea46d023c9b4792a
[INFO] sha for GitHub repo tony612/adventureofcode: e91e9cec8e04cc75fd1443baea46d023c9b4792a
[INFO] validating manifest of tony612/adventureofcode 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 tony612/adventureofcode 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 tony612/adventureofcode
[INFO] finished frobbing tony612/adventureofcode
[INFO] frobbed toml for tony612/adventureofcode written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/tony612/adventureofcode/Cargo.toml
[INFO] started frobbing tony612/adventureofcode
[INFO] finished frobbing tony612/adventureofcode
[INFO] frobbed toml for tony612/adventureofcode written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/tony612/adventureofcode/Cargo.toml
[INFO] crate tony612/adventureofcode 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 tony612/adventureofcode against master#60960a260f7b5c695fd0717311d72ce62dd4eb43 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-7/master#60960a260f7b5c695fd0717311d72ce62dd4eb43:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/tony612/adventureofcode:/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] c58d299fb442a36689f08ae5975c8b90ba49c6ef8c466c222ce95fdac6b7f2bd
[INFO] running `"docker" "start" "-a" "c58d299fb442a36689f08ae5975c8b90ba49c6ef8c466c222ce95fdac6b7f2bd"`
[INFO] [stderr]     Checking adventofcode v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: cannot borrow `areas` as mutable because it is also borrowed as immutable
[INFO] [stderr]   --> src/day6.rs:76:31
[INFO] [stderr]    |
[INFO] [stderr] 74 |             let found = areas.get(id);
[INFO] [stderr]    |                         ----- immutable borrow occurs here
[INFO] [stderr] 75 |             match found {
[INFO] [stderr] 76 |                 Some(size) => areas.insert(*id, size + 1),
[INFO] [stderr]    |                               ^^^^^             ---- immutable borrow later used here
[INFO] [stderr]    |                               |
[INFO] [stderr]    |                               mutable borrow occurs here
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stderr]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stderr]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stderr] 
[INFO] [stderr] warning: cannot borrow `areas` as mutable because it is also borrowed as immutable
[INFO] [stderr]   --> src/day6.rs:76:31
[INFO] [stderr]    |
[INFO] [stderr] 74 |             let found = areas.get(id);
[INFO] [stderr]    |                         ----- immutable borrow occurs here
[INFO] [stderr] 75 |             match found {
[INFO] [stderr] 76 |                 Some(size) => areas.insert(*id, size + 1),
[INFO] [stderr]    |                               ^^^^^             ---- immutable borrow later used here
[INFO] [stderr]    |                               |
[INFO] [stderr]    |                               mutable borrow occurs here
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stderr]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stderr]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.03s
[INFO] running `"docker" "inspect" "c58d299fb442a36689f08ae5975c8b90ba49c6ef8c466c222ce95fdac6b7f2bd"`
[INFO] running `"docker" "rm" "-f" "c58d299fb442a36689f08ae5975c8b90ba49c6ef8c466c222ce95fdac6b7f2bd"`
[INFO] [stdout] c58d299fb442a36689f08ae5975c8b90ba49c6ef8c466c222ce95fdac6b7f2bd