[INFO] cloning repository https://github.com/danielsyang/advent_of_code
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/danielsyang/advent_of_code" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdanielsyang%2Fadvent_of_code", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdanielsyang%2Fadvent_of_code'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d67b9ecdf5f931e714b5d8b540684a8855668022
[INFO] checking danielsyang/advent_of_code against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdanielsyang%2Fadvent_of_code" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/danielsyang/advent_of_code on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/danielsyang/advent_of_code
[INFO] finished tweaking git repo https://github.com/danielsyang/advent_of_code
[INFO] tweaked toml for git repo https://github.com/danielsyang/advent_of_code written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/danielsyang/advent_of_code 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fs-err v2.9.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9113622ec98053b42b34a438c0b4fc1fd0b8112e24492c20cfaa1527bb9d289a
[INFO] running `Command { std: "docker" "start" "-a" "9113622ec98053b42b34a438c0b4fc1fd0b8112e24492c20cfaa1527bb9d289a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9113622ec98053b42b34a438c0b4fc1fd0b8112e24492c20cfaa1527bb9d289a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9113622ec98053b42b34a438c0b4fc1fd0b8112e24492c20cfaa1527bb9d289a", kill_on_drop: false }`
[INFO] [stdout] 9113622ec98053b42b34a438c0b4fc1fd0b8112e24492c20cfaa1527bb9d289a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9de06d719c361280f1687a625bd44b93dcf171be22668ff2aff0a9531ca0dbcf
[INFO] running `Command { std: "docker" "start" "-a" "9de06d719c361280f1687a625bd44b93dcf171be22668ff2aff0a9531ca0dbcf", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]     Checking gimli v0.27.3
[INFO] [stderr]    Compiling eyre v0.6.8
[INFO] [stderr]     Checking rustc-demangle v0.1.23
[INFO] [stderr]     Checking owo-colors v3.5.0
[INFO] [stderr]     Checking indenter v0.3.3
[INFO] [stderr]     Checking either v1.8.1
[INFO] [stderr]     Checking fs-err v2.9.0
[INFO] [stderr]     Checking tracing v0.1.37
[INFO] [stderr]    Compiling backtrace v0.3.68
[INFO] [stderr]     Checking miniz_oxide v0.7.1
[INFO] [stderr]     Checking tracing-subscriber v0.3.17
[INFO] [stderr]     Checking itertools v0.11.0
[INFO] [stderr]     Checking object v0.31.1
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]     Checking tracing-error v0.2.0
[INFO] [stderr]     Checking color-spantrace v0.2.0
[INFO] [stderr]     Checking addr2line v0.20.0
[INFO] [stderr]     Checking color-eyre v0.6.2
[INFO] [stderr]     Checking advent_of_code v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]  --> src/day_five/stack.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     use super::*;
[INFO] [stdout]   |         ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.72s
[INFO] running `Command { std: "docker" "inspect" "9de06d719c361280f1687a625bd44b93dcf171be22668ff2aff0a9531ca0dbcf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9de06d719c361280f1687a625bd44b93dcf171be22668ff2aff0a9531ca0dbcf", kill_on_drop: false }`
[INFO] [stdout] 9de06d719c361280f1687a625bd44b93dcf171be22668ff2aff0a9531ca0dbcf
[INFO] checking danielsyang/advent_of_code against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdanielsyang%2Fadvent_of_code" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/danielsyang/advent_of_code on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/danielsyang/advent_of_code
[INFO] finished tweaking git repo https://github.com/danielsyang/advent_of_code
[INFO] tweaked toml for git repo https://github.com/danielsyang/advent_of_code written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/danielsyang/advent_of_code 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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 175cd4f79c8fa8bc3109958824008baf7e0500c416269fcd31a07ff3d22064e2
[INFO] running `Command { std: "docker" "start" "-a" "175cd4f79c8fa8bc3109958824008baf7e0500c416269fcd31a07ff3d22064e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "175cd4f79c8fa8bc3109958824008baf7e0500c416269fcd31a07ff3d22064e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "175cd4f79c8fa8bc3109958824008baf7e0500c416269fcd31a07ff3d22064e2", kill_on_drop: false }`
[INFO] [stdout] 175cd4f79c8fa8bc3109958824008baf7e0500c416269fcd31a07ff3d22064e2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6c03e6aca268cf6e5fa791f0fcfe9f901bd6ab9b5c3011a70c0412f12c51bed2
[INFO] running `Command { std: "docker" "start" "-a" "6c03e6aca268cf6e5fa791f0fcfe9f901bd6ab9b5c3011a70c0412f12c51bed2", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]     Checking gimli v0.27.3
[INFO] [stderr]    Compiling eyre v0.6.8
[INFO] [stderr]     Checking owo-colors v3.5.0
[INFO] [stderr]     Checking indenter v0.3.3
[INFO] [stderr]     Checking rustc-demangle v0.1.23
[INFO] [stderr]     Checking either v1.8.1
[INFO] [stderr]     Checking fs-err v2.9.0
[INFO] [stderr]    Compiling backtrace v0.3.68
[INFO] [stderr]     Checking tracing v0.1.37
[INFO] [stderr]     Checking miniz_oxide v0.7.1
[INFO] [stderr]     Checking tracing-subscriber v0.3.17
[INFO] [stderr]     Checking itertools v0.11.0
[INFO] [stderr]     Checking object v0.31.1
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]     Checking tracing-error v0.2.0
[INFO] [stderr]     Checking color-spantrace v0.2.0
[INFO] [stderr]     Checking addr2line v0.20.0
[INFO] [stderr]     Checking color-eyre v0.6.2
[INFO] [stderr]     Checking advent_of_code v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]  --> src/day_five/stack.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     use super::*;
[INFO] [stdout]   |         ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.66s
[INFO] running `Command { std: "docker" "inspect" "6c03e6aca268cf6e5fa791f0fcfe9f901bd6ab9b5c3011a70c0412f12c51bed2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c03e6aca268cf6e5fa791f0fcfe9f901bd6ab9b5c3011a70c0412f12c51bed2", kill_on_drop: false }`
[INFO] [stdout] 6c03e6aca268cf6e5fa791f0fcfe9f901bd6ab9b5c3011a70c0412f12c51bed2