[INFO] cloning repository https://github.com/mpancia/aoc2020
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mpancia/aoc2020" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmpancia%2Faoc2020", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmpancia%2Faoc2020'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6044149ca9ec2dca214c7abb3daa07551db742ba
[INFO] checking mpancia/aoc2020 against try#8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8 for pr-82565
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmpancia%2Faoc2020" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mpancia/aoc2020 on toolchain 8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mpancia/aoc2020
[INFO] finished tweaking git repo https://github.com/mpancia/aoc2020
[INFO] tweaked toml for git repo https://github.com/mpancia/aoc2020 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/mpancia/aoc2020 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "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] fc5db97aaa01552be04da2f77319fb8e7df7b03b5a26a3b791ce0fad7157355b
[INFO] running `Command { std: "docker" "start" "-a" "fc5db97aaa01552be04da2f77319fb8e7df7b03b5a26a3b791ce0fad7157355b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fc5db97aaa01552be04da2f77319fb8e7df7b03b5a26a3b791ce0fad7157355b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc5db97aaa01552be04da2f77319fb8e7df7b03b5a26a3b791ce0fad7157355b", kill_on_drop: false }`
[INFO] [stdout] fc5db97aaa01552be04da2f77319fb8e7df7b03b5a26a3b791ce0fad7157355b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 57800d0b5a98cffb4a0714a831ba0ef6d064ca072b43790aeb88af5a34c138b8
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "57800d0b5a98cffb4a0714a831ba0ef6d064ca072b43790aeb88af5a34c138b8", kill_on_drop: false }`
[INFO] [stderr]     Checking parse v0.1.0 (/opt/rustwide/workdir/parse)
[INFO] [stdout] warning: cannot borrow `count_dict` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> parse/src/day02.rs:17:22
[INFO] [stdout]    |
[INFO] [stdout] 15 |         let curr_count = count_dict.get(&pass_char);
[INFO] [stdout]    |                          ---------- immutable borrow occurs here
[INFO] [stdout] 16 |         match curr_count.is_none() {
[INFO] [stdout] 17 |             false => count_dict.insert(pass_char, curr_count.unwrap() + 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] [stderr]     Checking aoc2020 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.76s
[INFO] running `Command { std: "docker" "inspect" "57800d0b5a98cffb4a0714a831ba0ef6d064ca072b43790aeb88af5a34c138b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57800d0b5a98cffb4a0714a831ba0ef6d064ca072b43790aeb88af5a34c138b8", kill_on_drop: false }`
[INFO] [stdout] 57800d0b5a98cffb4a0714a831ba0ef6d064ca072b43790aeb88af5a34c138b8