[INFO] fetching crate identifier_derive 0.1.3...
[INFO] checking identifier_derive-0.1.3 against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] extracting crate identifier_derive 0.1.3 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate identifier_derive 0.1.3 on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate identifier_derive 0.1.3
[INFO] finished tweaking crates.io crate identifier_derive 0.1.3
[INFO] tweaked toml for crates.io crate identifier_derive 0.1.3 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bb5a9571655ad0f69502d2045ace1d01d53a66d1fe4aaaa459f30002ca096915
[INFO] running `Command { std: "docker" "start" "-a" "bb5a9571655ad0f69502d2045ace1d01d53a66d1fe4aaaa459f30002ca096915", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bb5a9571655ad0f69502d2045ace1d01d53a66d1fe4aaaa459f30002ca096915", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb5a9571655ad0f69502d2045ace1d01d53a66d1fe4aaaa459f30002ca096915", kill_on_drop: false }`
[INFO] [stdout] bb5a9571655ad0f69502d2045ace1d01d53a66d1fe4aaaa459f30002ca096915
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5bee5e1963e5eb501abc09d920da013447d6f413c2f055af5a031d3a4238172b
[INFO] running `Command { std: "docker" "start" "-a" "5bee5e1963e5eb501abc09d920da013447d6f413c2f055af5a031d3a4238172b", kill_on_drop: false }`
[INFO] [stderr]     Checking proc-macro2 v1.0.28
[INFO] [stderr]     Checking quote v1.0.9
[INFO] [stderr]     Checking syn v1.0.74
[INFO] [stderr]     Checking identifier_derive v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `tokens`
[INFO] [stdout]   --> src/internals/attr.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     tokens: TokenStream,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `tokens`
[INFO] [stdout]   --> src/internals/attr.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     tokens: TokenStream,
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.50s
[INFO] running `Command { std: "docker" "inspect" "5bee5e1963e5eb501abc09d920da013447d6f413c2f055af5a031d3a4238172b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5bee5e1963e5eb501abc09d920da013447d6f413c2f055af5a031d3a4238172b", kill_on_drop: false }`
[INFO] [stdout] 5bee5e1963e5eb501abc09d920da013447d6f413c2f055af5a031d3a4238172b