[INFO] cloning repository https://github.com/christiansakai/leetcode_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/christiansakai/leetcode_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchristiansakai%2Fleetcode_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchristiansakai%2Fleetcode_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c3cc0c03cb0f7b2a5f9b95ae9df86fc3f1a04e9d
[INFO] checking christiansakai/leetcode_rust against master#5e3f1b148db5bfa27fee52464ae1f5d34c49d77b for pr-75502
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchristiansakai%2Fleetcode_rust" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/christiansakai/leetcode_rust on toolchain 5e3f1b148db5bfa27fee52464ae1f5d34c49d77b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/christiansakai/leetcode_rust
[INFO] finished tweaking git repo https://github.com/christiansakai/leetcode_rust
[INFO] tweaked toml for git repo https://github.com/christiansakai/leetcode_rust written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/christiansakai/leetcode_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 822d4e0fa042b3cfd63bb18b4551911898d19763c8ded992b105f8c9e6b93ac4
[INFO] running `Command { std: "docker" "start" "-a" "822d4e0fa042b3cfd63bb18b4551911898d19763c8ded992b105f8c9e6b93ac4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "822d4e0fa042b3cfd63bb18b4551911898d19763c8ded992b105f8c9e6b93ac4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "822d4e0fa042b3cfd63bb18b4551911898d19763c8ded992b105f8c9e6b93ac4", kill_on_drop: false }`
[INFO] [stdout] 822d4e0fa042b3cfd63bb18b4551911898d19763c8ded992b105f8c9e6b93ac4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a480d68f78838be94dcfdd0cf5068299f1d6b5f1095b636acc469fe4d3f11452
[INFO] running `Command { std: "docker" "start" "-a" "a480d68f78838be94dcfdd0cf5068299f1d6b5f1095b636acc469fe4d3f11452", kill_on_drop: false }`
[INFO] [stderr]     Checking leetcode_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: cannot borrow `map` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> src/easy/n_repeated_element_in_size_2n_array.rs:11:17
[INFO] [stdout]    |
[INFO] [stdout] 6  |         match map.get(el) {
[INFO] [stdout]    |               --- immutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 11 |                 map.insert(*el, n + 1);
[INFO] [stdout]    |                 ^^^             - immutable borrow later used here
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 mutable borrow occurs here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stdout]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `map` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> src/easy/n_repeated_element_in_size_2n_array.rs:11:17
[INFO] [stdout]    |
[INFO] [stdout] 6  |         match map.get(el) {
[INFO] [stdout]    |               --- immutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 11 |                 map.insert(*el, n + 1);
[INFO] [stdout]    |                 ^^^             - immutable borrow later used here
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 mutable borrow occurs here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stdout]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.10s
[INFO] running `Command { std: "docker" "inspect" "a480d68f78838be94dcfdd0cf5068299f1d6b5f1095b636acc469fe4d3f11452", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a480d68f78838be94dcfdd0cf5068299f1d6b5f1095b636acc469fe4d3f11452", kill_on_drop: false }`
[INFO] [stdout] a480d68f78838be94dcfdd0cf5068299f1d6b5f1095b636acc469fe4d3f11452