[INFO] cloning repository https://github.com/RyanMeulenkamp/patchvision
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/RyanMeulenkamp/patchvision" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRyanMeulenkamp%2Fpatchvision", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRyanMeulenkamp%2Fpatchvision'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 024c2aa851e25c32f9bbc6034f67c1c7fe210425
[INFO] checking RyanMeulenkamp/patchvision against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRyanMeulenkamp%2Fpatchvision" "/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/RyanMeulenkamp/patchvision 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] removed /workspace/builds/worker-2-tc1/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/RyanMeulenkamp/patchvision
[INFO] finished tweaking git repo https://github.com/RyanMeulenkamp/patchvision
[INFO] tweaked toml for git repo https://github.com/RyanMeulenkamp/patchvision written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/RyanMeulenkamp/patchvision 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 grid v0.11.0
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cf67d0e773b7ee9c54481626c914df50a192ab4b7a8ac0750f5b426ecb7b9671
[INFO] running `Command { std: "docker" "start" "-a" "cf67d0e773b7ee9c54481626c914df50a192ab4b7a8ac0750f5b426ecb7b9671", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cf67d0e773b7ee9c54481626c914df50a192ab4b7a8ac0750f5b426ecb7b9671", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf67d0e773b7ee9c54481626c914df50a192ab4b7a8ac0750f5b426ecb7b9671", kill_on_drop: false }`
[INFO] [stdout] cf67d0e773b7ee9c54481626c914df50a192ab4b7a8ac0750f5b426ecb7b9671
[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" "-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] 267082fa1764e74ec23586d53da3c05d173a5532380306f84fc5479c68b235b1
[INFO] running `Command { std: "docker" "start" "-a" "267082fa1764e74ec23586d53da3c05d173a5532380306f84fc5479c68b235b1", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.70
[INFO] [stderr]    Compiling serde v1.0.193
[INFO] [stderr]    Compiling anyhow v1.0.75
[INFO] [stderr]     Checking hashbrown v0.14.3
[INFO] [stderr]     Checking equivalent v1.0.1
[INFO] [stderr]     Checking unsafe-libyaml v0.2.9
[INFO] [stderr]     Checking ryu v1.0.15
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking grid v0.11.0
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking itertools v0.11.0
[INFO] [stderr]     Checking indexmap v2.1.0
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.39
[INFO] [stderr]    Compiling serde_derive v1.0.193
[INFO] [stderr]     Checking serde_yaml v0.9.27
[INFO] [stderr]     Checking patchvision v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `down` is never used
[INFO] [stdout]  --> src/round.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub(crate) trait Round: Copy {
[INFO] [stdout]   |                  ----- method in this trait
[INFO] [stdout] 3 |     fn up(self, multiple: Self) -> Self;
[INFO] [stdout] 4 |     fn down(self, multiple: Self) -> Self;
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` 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 13.51s
[INFO] running `Command { std: "docker" "inspect" "267082fa1764e74ec23586d53da3c05d173a5532380306f84fc5479c68b235b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "267082fa1764e74ec23586d53da3c05d173a5532380306f84fc5479c68b235b1", kill_on_drop: false }`
[INFO] [stdout] 267082fa1764e74ec23586d53da3c05d173a5532380306f84fc5479c68b235b1