[INFO] cloning repository https://github.com/bluejekyll/advent-of-code-2018
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bluejekyll/advent-of-code-2018" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbluejekyll%2Fadvent-of-code-2018", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbluejekyll%2Fadvent-of-code-2018'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 253ebc7c1f1853d527cd9b8bbe23959c5d438011
[INFO] testing bluejekyll/advent-of-code-2018 against master#b70888601af92f6cdc0364abab3446e418b91d36 for pr-86479
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbluejekyll%2Fadvent-of-code-2018" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bluejekyll/advent-of-code-2018 on toolchain b70888601af92f6cdc0364abab3446e418b91d36
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bluejekyll/advent-of-code-2018
[INFO] finished tweaking git repo https://github.com/bluejekyll/advent-of-code-2018
[INFO] tweaked toml for git repo https://github.com/bluejekyll/advent-of-code-2018 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/bluejekyll/advent-of-code-2018 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 57a957e59e957e8998274533693d04cc6d96f78fcc813350cd9bd0bafb2b1f12
[INFO] running `Command { std: "docker" "start" "-a" "57a957e59e957e8998274533693d04cc6d96f78fcc813350cd9bd0bafb2b1f12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "57a957e59e957e8998274533693d04cc6d96f78fcc813350cd9bd0bafb2b1f12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57a957e59e957e8998274533693d04cc6d96f78fcc813350cd9bd0bafb2b1f12", kill_on_drop: false }`
[INFO] [stdout] 57a957e59e957e8998274533693d04cc6d96f78fcc813350cd9bd0bafb2b1f12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+b70888601af92f6cdc0364abab3446e418b91d36" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 938b22c7bb0a2cbdf2df5154f04d7939f1dde062e8f7b733e369fda4f5442222
[INFO] running `Command { std: "docker" "start" "-a" "938b22c7bb0a2cbdf2df5154f04d7939f1dde062e8f7b733e369fda4f5442222", kill_on_drop: false }`
[INFO] [stderr]    Compiling advent-of-code-2018 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021.
[INFO] [stdout]   --> src/day_2/checksum.rs:21:10
[INFO] [stdout]    |
[INFO] [stdout] 21 |         .into_iter()
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(array_into_iter)]` on by default
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 21 |         .iter()
[INFO] [stdout]    |          ^^^^
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 20 |     IntoIterator::into_iter(counts)
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^      ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.98s
[INFO] running `Command { std: "docker" "inspect" "938b22c7bb0a2cbdf2df5154f04d7939f1dde062e8f7b733e369fda4f5442222", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "938b22c7bb0a2cbdf2df5154f04d7939f1dde062e8f7b733e369fda4f5442222", kill_on_drop: false }`
[INFO] [stdout] 938b22c7bb0a2cbdf2df5154f04d7939f1dde062e8f7b733e369fda4f5442222
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 48d106433a8e93665214ccda9c5e53215f7c011793288c322819a69b4c247bf3
[INFO] running `Command { std: "docker" "start" "-a" "48d106433a8e93665214ccda9c5e53215f7c011793288c322819a69b4c247bf3", kill_on_drop: false }`
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021.
[INFO] [stdout]   --> src/day_2/checksum.rs:21:10
[INFO] [stdout]    |
[INFO] [stdout] 21 |         .into_iter()
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(array_into_iter)]` on by default
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 21 |         .iter()
[INFO] [stdout]    |          ^^^^
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 20 |     IntoIterator::into_iter(counts)
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^      ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling advent-of-code-2018 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021.
[INFO] [stdout]   --> src/day_2/checksum.rs:21:10
[INFO] [stdout]    |
[INFO] [stdout] 21 |         .into_iter()
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(array_into_iter)]` on by default
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 21 |         .iter()
[INFO] [stdout]    |          ^^^^
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 20 |     IntoIterator::into_iter(counts)
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^      ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.98s
[INFO] running `Command { std: "docker" "inspect" "48d106433a8e93665214ccda9c5e53215f7c011793288c322819a69b4c247bf3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48d106433a8e93665214ccda9c5e53215f7c011793288c322819a69b4c247bf3", kill_on_drop: false }`
[INFO] [stdout] 48d106433a8e93665214ccda9c5e53215f7c011793288c322819a69b4c247bf3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b4f11b5aed47cc765460fb9616ea600365804607ab96bbb03858e4486f01bc43
[INFO] running `Command { std: "docker" "start" "-a" "b4f11b5aed47cc765460fb9616ea600365804607ab96bbb03858e4486f01bc43", kill_on_drop: false }`
[INFO] [stderr] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021.
[INFO] [stderr]   --> src/day_2/checksum.rs:21:10
[INFO] [stderr]    |
[INFO] [stderr] 21 |         .into_iter()
[INFO] [stderr]    |          ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(array_into_iter)]` on by default
[INFO] [stderr]    = warning: this changes meaning in Rust 2021
[INFO] [stderr]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stderr] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stderr]    |
[INFO] [stderr] 21 |         .iter()
[INFO] [stderr]    |          ^^^^
[INFO] [stderr] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stderr]    |
[INFO] [stderr] 20 |     IntoIterator::into_iter(counts)
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^      ^
[INFO] [stderr] 
[INFO] [stderr] warning: `advent-of-code-2018` (lib) generated 1 warning
[INFO] [stderr] warning: `advent-of-code-2018` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/advent_of_code_2018-134e702026721796)
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test day_2::strings_differ_by_1::test_strings_differ_by_1 ... ok
[INFO] [stdout] test day_2::checksum::test_count_2_and_3 ... ok
[INFO] [stdout] test day_2::checksum::test_has_2_or3 ... ok
[INFO] [stdout] test day_2::checksum::test_day_2 ... ok
[INFO] [stdout] test day_2::checksum::test_checksum ... ok
[INFO] [stdout] test day_1::frequency::test_calibrate ... ok
[INFO] [stdout] test day_2::strings_differ_by_1::test_day_2 ... ok
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/advent_of_code_2018-cb0db07fe32539b1)
[INFO] [stdout] test day_1::frequency::test_day_1_part_2 ... ok
[INFO] [stderr]    Doc-tests advent-of-code-2018
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.47s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b4f11b5aed47cc765460fb9616ea600365804607ab96bbb03858e4486f01bc43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4f11b5aed47cc765460fb9616ea600365804607ab96bbb03858e4486f01bc43", kill_on_drop: false }`
[INFO] [stdout] b4f11b5aed47cc765460fb9616ea600365804607ab96bbb03858e4486f01bc43