[INFO] cloning repository https://github.com/larsmoil/adventofcode2020 [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/larsmoil/adventofcode2020" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flarsmoil%2Fadventofcode2020", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flarsmoil%2Fadventofcode2020'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] f42d5c9837fefc72109163cea3275b857eaf3e36 [INFO] checking larsmoil/adventofcode2020 against try#32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d for pr-83312 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flarsmoil%2Fadventofcode2020" "/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/larsmoil/adventofcode2020 on toolchain 32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/larsmoil/adventofcode2020 [INFO] finished tweaking git repo https://github.com/larsmoil/adventofcode2020 [INFO] tweaked toml for git repo https://github.com/larsmoil/adventofcode2020 written to /workspace/builds/worker-7/source/Cargo.toml [INFO] crate git repo https://github.com/larsmoil/adventofcode2020 already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded array_tool v1.0.3 [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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 93737632c34ee0f1e5ed5a0a763a191edb52c4b585a2e34d646fe9cbba6d9d06 [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" "93737632c34ee0f1e5ed5a0a763a191edb52c4b585a2e34d646fe9cbba6d9d06", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "93737632c34ee0f1e5ed5a0a763a191edb52c4b585a2e34d646fe9cbba6d9d06", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "93737632c34ee0f1e5ed5a0a763a191edb52c4b585a2e34d646fe9cbba6d9d06", kill_on_drop: false }` [INFO] [stdout] 93737632c34ee0f1e5ed5a0a763a191edb52c4b585a2e34d646fe9cbba6d9d06 [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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d" "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] a67592b243d8f40ebcc34d0a96174a4d1a56895ef30443bc8ef7a909560e4240 [INFO] running `Command { std: "docker" "start" "-a" "a67592b243d8f40ebcc34d0a96174a4d1a56895ef30443bc8ef7a909560e4240", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Checking adventofcode-2020 v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/day04.rs:5:9 [INFO] [stdout] | [INFO] [stdout] 5 | let mut entries = passport [INFO] [stdout] | ----^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: cannot borrow `required_fields` as mutable because it is also borrowed as immutable [INFO] [stdout] --> src/day04.rs:26:13 [INFO] [stdout] | [INFO] [stdout] 23 | let required_field = required_fields.iter().enumerate().find(|(_, &required_field)| required_field == field); [INFO] [stdout] | --------------- immutable borrow occurs here [INFO] [stdout] ... [INFO] [stdout] 26 | required_fields.remove(required_field.unwrap().0); [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 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/day04.rs:5:9 [INFO] [stdout] | [INFO] [stdout] 5 | let mut entries = passport [INFO] [stdout] | ----^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: cannot borrow `required_fields` as mutable because it is also borrowed as immutable [INFO] [stdout] --> src/day04.rs:26:13 [INFO] [stdout] | [INFO] [stdout] 23 | let required_field = required_fields.iter().enumerate().find(|(_, &required_field)| required_field == field); [INFO] [stdout] | --------------- immutable borrow occurs here [INFO] [stdout] ... [INFO] [stdout] 26 | required_fields.remove(required_field.unwrap().0); [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 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.97s [INFO] running `Command { std: "docker" "inspect" "a67592b243d8f40ebcc34d0a96174a4d1a56895ef30443bc8ef7a909560e4240", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a67592b243d8f40ebcc34d0a96174a4d1a56895ef30443bc8ef7a909560e4240", kill_on_drop: false }` [INFO] [stdout] a67592b243d8f40ebcc34d0a96174a4d1a56895ef30443bc8ef7a909560e4240