[INFO] cloning repository christiansakai/leetcode_rust
[INFO] running `"git" "clone" "--bare" "git://github.com/christiansakai/leetcode_rust.git" "work/cache/sources/gh/christiansakai/leetcode_rust"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/christiansakai/leetcode_rust'...
[INFO] running `"git" "clone" "work/cache/sources/gh/christiansakai/leetcode_rust" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/christiansakai/leetcode_rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/christiansakai/leetcode_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/christiansakai/leetcode_rust" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/christiansakai/leetcode_rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/christiansakai/leetcode_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c3cc0c03cb0f7b2a5f9b95ae9df86fc3f1a04e9d
[INFO] sha for GitHub repo christiansakai/leetcode_rust: c3cc0c03cb0f7b2a5f9b95ae9df86fc3f1a04e9d
[INFO] validating manifest of christiansakai/leetcode_rust 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 christiansakai/leetcode_rust 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 christiansakai/leetcode_rust
[INFO] finished frobbing christiansakai/leetcode_rust
[INFO] frobbed toml for christiansakai/leetcode_rust written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/christiansakai/leetcode_rust/Cargo.toml
[INFO] started frobbing christiansakai/leetcode_rust
[INFO] finished frobbing christiansakai/leetcode_rust
[INFO] frobbed toml for christiansakai/leetcode_rust written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/christiansakai/leetcode_rust/Cargo.toml
[INFO] crate christiansakai/leetcode_rust 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] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking christiansakai/leetcode_rust against master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-2/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/christiansakai/leetcode_rust:/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" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] ddd93872ca59e1af684fd65f8cf7d0869ed73eed4227d29defa484ac9e5ee70a
[INFO] running `"docker" "start" "-a" "ddd93872ca59e1af684fd65f8cf7d0869ed73eed4227d29defa484ac9e5ee70a"`
[INFO] [stderr]     Checking leetcode_rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: cannot borrow `map` as mutable because it is also borrowed as immutable
[INFO] [stderr]   --> src/easy/n_repeated_element_in_size_2n_array.rs:11:17
[INFO] [stderr]    |
[INFO] [stderr] 6  |         match map.get(el) {
[INFO] [stderr]    |               --- immutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 11 |                 map.insert(*el, n + 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 `map` as mutable because it is also borrowed as immutable
[INFO] [stderr]   --> src/easy/n_repeated_element_in_size_2n_array.rs:11:17
[INFO] [stderr]    |
[INFO] [stderr] 6  |         match map.get(el) {
[INFO] [stderr]    |               --- immutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 11 |                 map.insert(*el, n + 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 0.79s
[INFO] running `"docker" "inspect" "ddd93872ca59e1af684fd65f8cf7d0869ed73eed4227d29defa484ac9e5ee70a"`
[INFO] running `"docker" "rm" "-f" "ddd93872ca59e1af684fd65f8cf7d0869ed73eed4227d29defa484ac9e5ee70a"`
[INFO] [stdout] ddd93872ca59e1af684fd65f8cf7d0869ed73eed4227d29defa484ac9e5ee70a