[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#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmpancia%2Faoc2020" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mpancia/aoc2020 on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "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-7/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" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "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] 4d142f07e96053fd752dceef79bf064b3d94242fcdb5a8cc4b53d7ec812ebf76
[INFO] running `Command { std: "docker" "start" "-a" "4d142f07e96053fd752dceef79bf064b3d94242fcdb5a8cc4b53d7ec812ebf76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4d142f07e96053fd752dceef79bf064b3d94242fcdb5a8cc4b53d7ec812ebf76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d142f07e96053fd752dceef79bf064b3d94242fcdb5a8cc4b53d7ec812ebf76", kill_on_drop: false }`
[INFO] [stdout] 4d142f07e96053fd752dceef79bf064b3d94242fcdb5a8cc4b53d7ec812ebf76
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 63fa6ede560a1728ab9adaa821080111daf15bf17d4fecc52d8caa4f1c2515c5
[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" "63fa6ede560a1728ab9adaa821080111daf15bf17d4fecc52d8caa4f1c2515c5", kill_on_drop: false }`
[INFO] [stderr]     Checking parse v0.1.0 (/opt/rustwide/workdir/parse)
[INFO] [stderr]     Checking itertools v0.9.0
[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 2.03s
[INFO] running `Command { std: "docker" "inspect" "63fa6ede560a1728ab9adaa821080111daf15bf17d4fecc52d8caa4f1c2515c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63fa6ede560a1728ab9adaa821080111daf15bf17d4fecc52d8caa4f1c2515c5", kill_on_drop: false }`
[INFO] [stdout] 63fa6ede560a1728ab9adaa821080111daf15bf17d4fecc52d8caa4f1c2515c5