[INFO] fetching crate eles 1.0.0...
[INFO] checking eles-1.0.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate eles 1.0.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate eles 1.0.0 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 crates.io crate eles 1.0.0
[INFO] finished tweaking crates.io crate eles 1.0.0
[INFO] tweaked toml for crates.io crate eles 1.0.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate eles 1.0.0 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] 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] 1c2350950f8c757702ae6658c56dce8c1dd08bae5cdce111bc40dae479fce7d9
[INFO] running `Command { std: "docker" "start" "-a" "1c2350950f8c757702ae6658c56dce8c1dd08bae5cdce111bc40dae479fce7d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1c2350950f8c757702ae6658c56dce8c1dd08bae5cdce111bc40dae479fce7d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c2350950f8c757702ae6658c56dce8c1dd08bae5cdce111bc40dae479fce7d9", kill_on_drop: false }`
[INFO] [stdout] 1c2350950f8c757702ae6658c56dce8c1dd08bae5cdce111bc40dae479fce7d9
[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] 09a9ff1039ed6bb320122adb50db500bbb341d01385804b65ea9fefd0bf06656
[INFO] running `Command { std: "docker" "start" "-a" "09a9ff1039ed6bb320122adb50db500bbb341d01385804b65ea9fefd0bf06656", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling anyhow v1.0.57
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking once_cell v1.10.0
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking eles v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> examples/practical_use_case.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 |  S(String),
[INFO] [stdout]    |  - ^^^^^^
[INFO] [stdout]    |  |
[INFO] [stdout]    |  field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 14 |  S(()),
[INFO] [stdout]    |    ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.11s
[INFO] running `Command { std: "docker" "inspect" "09a9ff1039ed6bb320122adb50db500bbb341d01385804b65ea9fefd0bf06656", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09a9ff1039ed6bb320122adb50db500bbb341d01385804b65ea9fefd0bf06656", kill_on_drop: false }`
[INFO] [stdout] 09a9ff1039ed6bb320122adb50db500bbb341d01385804b65ea9fefd0bf06656