[INFO] cloning repository https://github.com/Gricha/AdventOfCode2021
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Gricha/AdventOfCode2021" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGricha%2FAdventOfCode2021", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGricha%2FAdventOfCode2021'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ffc033a54e7950275db73b2afd2a88182144c5d6
[INFO] building Gricha/AdventOfCode2021 against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGricha%2FAdventOfCode2021" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Gricha/AdventOfCode2021 on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Gricha/AdventOfCode2021
[INFO] finished tweaking git repo https://github.com/Gricha/AdventOfCode2021
[INFO] tweaked toml for git repo https://github.com/Gricha/AdventOfCode2021 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Gricha/AdventOfCode2021 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded scan_fmt v0.2.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 92d80d22e81583a8e617b1ec19e416e2280ea6c9af108347df3db5788931a3d8
[INFO] running `Command { std: "docker" "start" "-a" "92d80d22e81583a8e617b1ec19e416e2280ea6c9af108347df3db5788931a3d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "92d80d22e81583a8e617b1ec19e416e2280ea6c9af108347df3db5788931a3d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92d80d22e81583a8e617b1ec19e416e2280ea6c9af108347df3db5788931a3d8", kill_on_drop: false }`
[INFO] [stdout] 92d80d22e81583a8e617b1ec19e416e2280ea6c9af108347df3db5788931a3d8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b943bb3c2644e6300da45dc9d77369b5ae27683a3f485a73d671de448bc5512f
[INFO] running `Command { std: "docker" "start" "-a" "b943bb3c2644e6300da45dc9d77369b5ae27683a3f485a73d671de448bc5512f", kill_on_drop: false }`
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling scan_fmt v0.2.6
[INFO] [stderr]    Compiling itertools v0.10.3
[INFO] [stderr]    Compiling advent v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/day18.rs:69:17
[INFO] [stdout]    |
[INFO] [stdout] 69 | /                 std::mem::replace(
[INFO] [stdout] 70 | |                     number,
[INFO] [stdout] 71 | |                     Number::Nested(Box::new(InnerNumber {
[INFO] [stdout] 72 | |                         left: Box::new(Number::Literal(left)),
[INFO] [stdout] 73 | |                         right: Box::new(Number::Literal(right)),
[INFO] [stdout] 74 | |                     })),
[INFO] [stdout] 75 | |                 );
[INFO] [stdout]    | |_________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 69 |                 let _ = std::mem::replace(
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/day18.rs:109:17
[INFO] [stdout]     |
[INFO] [stdout] 109 |                 std::mem::replace(number, Number::Literal(0));
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 109 |                 let _ = std::mem::replace(number, Number::Literal(0));
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.18s
[INFO] running `Command { std: "docker" "inspect" "b943bb3c2644e6300da45dc9d77369b5ae27683a3f485a73d671de448bc5512f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b943bb3c2644e6300da45dc9d77369b5ae27683a3f485a73d671de448bc5512f", kill_on_drop: false }`
[INFO] [stdout] b943bb3c2644e6300da45dc9d77369b5ae27683a3f485a73d671de448bc5512f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 540d7052f8d32978a3122be26e378fd15e53d74a913deec2b8ccf5cc3d8f7d57
[INFO] running `Command { std: "docker" "start" "-a" "540d7052f8d32978a3122be26e378fd15e53d74a913deec2b8ccf5cc3d8f7d57", kill_on_drop: false }`
[INFO] [stderr]    Compiling advent v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/day18.rs:69:17
[INFO] [stdout]    |
[INFO] [stdout] 69 | /                 std::mem::replace(
[INFO] [stdout] 70 | |                     number,
[INFO] [stdout] 71 | |                     Number::Nested(Box::new(InnerNumber {
[INFO] [stdout] 72 | |                         left: Box::new(Number::Literal(left)),
[INFO] [stdout] 73 | |                         right: Box::new(Number::Literal(right)),
[INFO] [stdout] 74 | |                     })),
[INFO] [stdout] 75 | |                 );
[INFO] [stdout]    | |_________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 69 |                 let _ = std::mem::replace(
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/day18.rs:109:17
[INFO] [stdout]     |
[INFO] [stdout] 109 |                 std::mem::replace(number, Number::Literal(0));
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 109 |                 let _ = std::mem::replace(number, Number::Literal(0));
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.73s
[INFO] running `Command { std: "docker" "inspect" "540d7052f8d32978a3122be26e378fd15e53d74a913deec2b8ccf5cc3d8f7d57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "540d7052f8d32978a3122be26e378fd15e53d74a913deec2b8ccf5cc3d8f7d57", kill_on_drop: false }`
[INFO] [stdout] 540d7052f8d32978a3122be26e378fd15e53d74a913deec2b8ccf5cc3d8f7d57