[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 master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmpancia%2Faoc2020" "/workspace/builds/worker-67/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-67/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mpancia/aoc2020 on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "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-67/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" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 09c7210af909dc2ee2949ce71c670b94b57f1f9a7f630bd26407dd424edfe2b8
[INFO] running `Command { std: "docker" "start" "-a" "09c7210af909dc2ee2949ce71c670b94b57f1f9a7f630bd26407dd424edfe2b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "09c7210af909dc2ee2949ce71c670b94b57f1f9a7f630bd26407dd424edfe2b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09c7210af909dc2ee2949ce71c670b94b57f1f9a7f630bd26407dd424edfe2b8", kill_on_drop: false }`
[INFO] [stdout] 09c7210af909dc2ee2949ce71c670b94b57f1f9a7f630bd26407dd424edfe2b8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4c349f23f26e5749cb2f2e5fc1519d5944b63ae46a5a44ac3793c93f56859427
[INFO] running `Command { std: "docker" "start" "-a" "4c349f23f26e5749cb2f2e5fc1519d5944b63ae46a5a44ac3793c93f56859427", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking either v1.6.1
[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 itertools v0.9.0
[INFO] [stderr]     Checking aoc2020 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.45s
[INFO] running `Command { std: "docker" "inspect" "4c349f23f26e5749cb2f2e5fc1519d5944b63ae46a5a44ac3793c93f56859427", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c349f23f26e5749cb2f2e5fc1519d5944b63ae46a5a44ac3793c93f56859427", kill_on_drop: false }`
[INFO] [stdout] 4c349f23f26e5749cb2f2e5fc1519d5944b63ae46a5a44ac3793c93f56859427