[INFO] cloning repository https://github.com/nathans106/rust-advent-2021
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nathans106/rust-advent-2021" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnathans106%2Frust-advent-2021", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnathans106%2Frust-advent-2021'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0b120099b7e2da0d8ba131eab7c9b997befc6212
[INFO] checking nathans106/rust-advent-2021 against master#17ffbc81a30c094193836a5d7f90dff273b5df93 for pr-138785
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnathans106%2Frust-advent-2021" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nathans106/rust-advent-2021 on toolchain 17ffbc81a30c094193836a5d7f90dff273b5df93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+17ffbc81a30c094193836a5d7f90dff273b5df93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nathans106/rust-advent-2021
[INFO] finished tweaking git repo https://github.com/nathans106/rust-advent-2021
[INFO] tweaked toml for git repo https://github.com/nathans106/rust-advent-2021 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/nathans106/rust-advent-2021 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+17ffbc81a30c094193836a5d7f90dff273b5df93" "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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+17ffbc81a30c094193836a5d7f90dff273b5df93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f182f13bde7332265656cc42e80e1bd8583c9da8083dd31ce4a7cdc7b89a1dbd
[INFO] running `Command { std: "docker" "start" "-a" "f182f13bde7332265656cc42e80e1bd8583c9da8083dd31ce4a7cdc7b89a1dbd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f182f13bde7332265656cc42e80e1bd8583c9da8083dd31ce4a7cdc7b89a1dbd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f182f13bde7332265656cc42e80e1bd8583c9da8083dd31ce4a7cdc7b89a1dbd", kill_on_drop: false }`
[INFO] [stdout] f182f13bde7332265656cc42e80e1bd8583c9da8083dd31ce4a7cdc7b89a1dbd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "RUSTDOCFLAGS=--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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+17ffbc81a30c094193836a5d7f90dff273b5df93" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 76ba05f28fceb13e352365609211b2b86190f7ee90ddc57e5bf1dfb3b27c5535
[INFO] running `Command { std: "docker" "start" "-a" "76ba05f28fceb13e352365609211b2b86190f7ee90ddc57e5bf1dfb3b27c5535", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking regex-syntax v0.6.26
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking regex v1.5.6
[INFO] [stderr]     Checking rust-advent-2021 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/day3/diagnostics.rs:103:17
[INFO] [stdout]     |
[INFO] [stdout] 103 |             let mut tally = &mut counts[i];
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/day3/diagnostics.rs:103:17
[INFO] [stdout]     |
[INFO] [stdout] 103 |             let mut tally = &mut counts[i];
[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] error[E0599]: no method named `unwrap` found for struct `Vec<(usize, i32)>` in the current scope
[INFO] [stdout]   --> src/bin/day4/bingo.rs:59:52
[INFO] [stdout]    |
[INFO] [stdout] 59 |         let (_winner, score) = play(cards, &calls).unwrap();
[INFO] [stdout]    |                                                    ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: there is a method `swap` with a similar name, but with different arguments
[INFO] [stdout]   --> /rustc/17ffbc81a30c094193836a5d7f90dff273b5df93/library/core/src/slice/mod.rs:890:5
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust-advent-2021` (bin "day4" test) due to 1 previous error
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "76ba05f28fceb13e352365609211b2b86190f7ee90ddc57e5bf1dfb3b27c5535", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76ba05f28fceb13e352365609211b2b86190f7ee90ddc57e5bf1dfb3b27c5535", kill_on_drop: false }`
[INFO] [stdout] 76ba05f28fceb13e352365609211b2b86190f7ee90ddc57e5bf1dfb3b27c5535