[INFO] fetching crate eles 1.0.0...
[INFO] checking eles-1.0.0 against master#a3f76a26e045a760bb1163b7eab36872985242d5 for pr-130930
[INFO] extracting crate eles 1.0.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate eles 1.0.0 on toolchain a3f76a26e045a760bb1163b7eab36872985242d5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a3f76a26e045a760bb1163b7eab36872985242d5" "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-4-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" "+a3f76a26e045a760bb1163b7eab36872985242d5" "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-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+a3f76a26e045a760bb1163b7eab36872985242d5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ba7fd69e7e52a24f2e63d190d9232d40d27d15096cc8d8bbfb2832272bbf88d4
[INFO] running `Command { std: "docker" "start" "-a" "ba7fd69e7e52a24f2e63d190d9232d40d27d15096cc8d8bbfb2832272bbf88d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ba7fd69e7e52a24f2e63d190d9232d40d27d15096cc8d8bbfb2832272bbf88d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba7fd69e7e52a24f2e63d190d9232d40d27d15096cc8d8bbfb2832272bbf88d4", kill_on_drop: false }`
[INFO] [stdout] ba7fd69e7e52a24f2e63d190d9232d40d27d15096cc8d8bbfb2832272bbf88d4
[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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+a3f76a26e045a760bb1163b7eab36872985242d5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bee82f230ce3d6d439ba4d1284cebcdd86a39d855b73d5357dea2a1efdd4c930
[INFO] running `Command { std: "docker" "start" "-a" "bee82f230ce3d6d439ba4d1284cebcdd86a39d855b73d5357dea2a1efdd4c930", 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 eles v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking aho-corasick v0.7.18
[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 3.74s
[INFO] running `Command { std: "docker" "inspect" "bee82f230ce3d6d439ba4d1284cebcdd86a39d855b73d5357dea2a1efdd4c930", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bee82f230ce3d6d439ba4d1284cebcdd86a39d855b73d5357dea2a1efdd4c930", kill_on_drop: false }`
[INFO] [stdout] bee82f230ce3d6d439ba4d1284cebcdd86a39d855b73d5357dea2a1efdd4c930