[INFO] cloning repository https://github.com/dots-git/vinegar
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dots-git/vinegar" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdots-git%2Fvinegar", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdots-git%2Fvinegar'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 98f577c455196130f253113ef5be659858e6e4d1
[INFO] checking dots-git/vinegar against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdots-git%2Fvinegar" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dots-git/vinegar 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/dots-git/vinegar
[INFO] finished tweaking git repo https://github.com/dots-git/vinegar
[INFO] tweaked toml for git repo https://github.com/dots-git/vinegar written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/dots-git/vinegar 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 unescaper v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 0900d7d8698e357abad05e7e279ff0eb7841b1591b4297e5d050f7ee4002be76
[INFO] running `Command { std: "docker" "start" "-a" "0900d7d8698e357abad05e7e279ff0eb7841b1591b4297e5d050f7ee4002be76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0900d7d8698e357abad05e7e279ff0eb7841b1591b4297e5d050f7ee4002be76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0900d7d8698e357abad05e7e279ff0eb7841b1591b4297e5d050f7ee4002be76", kill_on_drop: false }`
[INFO] [stdout] 0900d7d8698e357abad05e7e279ff0eb7841b1591b4297e5d050f7ee4002be76
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] e18127fe00dc38973c58ea0bf88d89d047c24d1b122465935709bb3503e08e31
[INFO] running `Command { std: "docker" "start" "-a" "e18127fe00dc38973c58ea0bf88d89d047c24d1b122465935709bb3503e08e31", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.66
[INFO] [stderr]    Compiling unicode-ident v1.0.11
[INFO] [stderr]    Compiling rustix v0.38.13
[INFO] [stderr]    Compiling thiserror v1.0.48
[INFO] [stderr]     Checking linux-raw-sys v0.4.7
[INFO] [stderr]     Checking bitflags v2.4.0
[INFO] [stderr]     Checking memchr v2.6.3
[INFO] [stderr]     Checking regex-syntax v0.7.5
[INFO] [stderr]     Checking aho-corasick v1.0.5
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.31
[INFO] [stderr]     Checking is-terminal v0.4.9
[INFO] [stderr]     Checking colored v2.0.4
[INFO] [stderr]     Checking regex-automata v0.3.8
[INFO] [stderr]    Compiling thiserror-impl v1.0.48
[INFO] [stderr]    Compiling rust_struct_wrapper_macro v0.1.0 (/opt/rustwide/workdir/rust_struct_wrapper_macro)
[INFO] [stderr]     Checking regex v1.9.5
[INFO] [stderr]     Checking unescaper v0.1.2
[INFO] [stderr]     Checking vinegar v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `concat_single` is never used
[INFO] [stdout]   --> src/interpreter/iter.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub trait CanConcatenate<I, J>
[INFO] [stdout]    |           -------------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 38 |     fn concat_single(self, other: I::Item) -> ConcatenatedIterator<I, SingleItemIterator<I::Item>>;
[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] [stdout] warning: method `concat_single` is never used
[INFO] [stdout]   --> src/interpreter/iter.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub trait CanConcatenate<I, J>
[INFO] [stdout]    |           -------------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 38 |     fn concat_single(self, other: I::Item) -> ConcatenatedIterator<I, SingleItemIterator<I::Item>>;
[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 17.70s
[INFO] running `Command { std: "docker" "inspect" "e18127fe00dc38973c58ea0bf88d89d047c24d1b122465935709bb3503e08e31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e18127fe00dc38973c58ea0bf88d89d047c24d1b122465935709bb3503e08e31", kill_on_drop: false }`
[INFO] [stdout] e18127fe00dc38973c58ea0bf88d89d047c24d1b122465935709bb3503e08e31