[INFO] cloning repository https://github.com/samwho/advent-of-code-2020
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/samwho/advent-of-code-2020" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsamwho%2Fadvent-of-code-2020", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsamwho%2Fadvent-of-code-2020'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e6f47d774a9e4963768c9dbc53b749d914b91621
[INFO] checking samwho/advent-of-code-2020 against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsamwho%2Fadvent-of-code-2020" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/samwho/advent-of-code-2020 on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/samwho/advent-of-code-2020
[INFO] finished tweaking git repo https://github.com/samwho/advent-of-code-2020
[INFO] tweaked toml for git repo https://github.com/samwho/advent-of-code-2020 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/samwho/advent-of-code-2020 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d894657254eb9fb6facedb4d308b4fe4658fccb174b5d3bced4790ecc692c8cd
[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" "d894657254eb9fb6facedb4d308b4fe4658fccb174b5d3bced4790ecc692c8cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d894657254eb9fb6facedb4d308b4fe4658fccb174b5d3bced4790ecc692c8cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d894657254eb9fb6facedb4d308b4fe4658fccb174b5d3bced4790ecc692c8cd", kill_on_drop: false }`
[INFO] [stdout] d894657254eb9fb6facedb4d308b4fe4658fccb174b5d3bced4790ecc692c8cd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f79bfb52c60a23536fa57f72f41bab03cbcb10a6c9ec75855a87ce22d83206e6
[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" "f79bfb52c60a23536fa57f72f41bab03cbcb10a6c9ec75855a87ce22d83206e6", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]     Checking regex v1.4.2
[INFO] [stderr]     Checking advent-of-code-2020 v0.1.0 (/tmp/fixit)
[INFO] [stderr]    Migrating src/7.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating src/3.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating src/4.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating src/9.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating src/5.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating src/1.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating src/8.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating src/6.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating src/2.rs from 2018 edition to 2021
[INFO] [stderr]        Fixed src/7.rs (2 fixes)
[INFO] [stderr]        Fixed src/5.rs (1 fix)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.53s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]     Checking advent-of-code-2020 v0.1.0 (/tmp/fixit)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.36s
[INFO] running `Command { std: "docker" "inspect" "f79bfb52c60a23536fa57f72f41bab03cbcb10a6c9ec75855a87ce22d83206e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f79bfb52c60a23536fa57f72f41bab03cbcb10a6c9ec75855a87ce22d83206e6", kill_on_drop: false }`
[INFO] [stdout] f79bfb52c60a23536fa57f72f41bab03cbcb10a6c9ec75855a87ce22d83206e6