[INFO] cloning repository tony612/adventureofcode
[INFO] running `"git" "clone" "--bare" "git://github.com/tony612/adventureofcode.git" "work/cache/sources/gh/tony612/adventureofcode"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/tony612/adventureofcode'...
[INFO] running `"git" "clone" "work/cache/sources/gh/tony612/adventureofcode" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/tony612/adventureofcode"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/tony612/adventureofcode'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/tony612/adventureofcode" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/tony612/adventureofcode"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/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#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of tony612/adventureofcode on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-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-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/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-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/tony612/adventureofcode/Cargo.toml
[INFO] crate tony612/adventureofcode already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking tony612/adventureofcode against try#8f81d0bf6baf07b92f1246696722485c4ca0b049 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-4/try#8f81d0bf6baf07b92f1246696722485c4ca0b049:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/tony612/adventureofcode:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/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" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] f0b40080450a266e64a68a931ad1e23bda2cd1652290aea00e05d0a505be234c
[INFO] running `"docker" "start" "-a" "f0b40080450a266e64a68a931ad1e23bda2cd1652290aea00e05d0a505be234c"`
[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] 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]   --> 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 0.91s
[INFO] running `"docker" "inspect" "f0b40080450a266e64a68a931ad1e23bda2cd1652290aea00e05d0a505be234c"`
[INFO] running `"docker" "rm" "-f" "f0b40080450a266e64a68a931ad1e23bda2cd1652290aea00e05d0a505be234c"`
[INFO] [stdout] f0b40080450a266e64a68a931ad1e23bda2cd1652290aea00e05d0a505be234c