[INFO] fetching crate mockiato-codegen 0.9.5...
[INFO] testing mockiato-codegen-0.9.5 against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] extracting crate mockiato-codegen 0.9.5 into /workspace/builds/worker-86/source
[INFO] validating manifest of crates.io crate mockiato-codegen 0.9.5 on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mockiato-codegen 0.9.5
[INFO] finished tweaking crates.io crate mockiato-codegen 0.9.5
[INFO] tweaked toml for crates.io crate mockiato-codegen 0.9.5 written to /workspace/builds/worker-86/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "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-86/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] abb87f904e359dfc17fc16d5d4c509c8a3c201187083efcc1242d9c01c96cc1a
[INFO] running `Command { std: "docker" "start" "-a" "abb87f904e359dfc17fc16d5d4c509c8a3c201187083efcc1242d9c01c96cc1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "abb87f904e359dfc17fc16d5d4c509c8a3c201187083efcc1242d9c01c96cc1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "abb87f904e359dfc17fc16d5d4c509c8a3c201187083efcc1242d9c01c96cc1a", kill_on_drop: false }`
[INFO] [stdout] abb87f904e359dfc17fc16d5d4c509c8a3c201187083efcc1242d9c01c96cc1a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f143d71d10b12ccd8ba5cf06edf21f8c09c81985b8f1a367407e554116113762
[INFO] running `Command { std: "docker" "start" "-a" "f143d71d10b12ccd8ba5cf06edf21f8c09c81985b8f1a367407e554116113762", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling mockiato-codegen v0.9.5 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stdout] error: unused extern crate
[INFO] [stdout]   --> src/lib.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | extern crate proc_macro;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove it
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout] 7  |     rust_2018_idioms,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[deny(unused_extern_crates)]` implied by `#[deny(rust_2018_idioms)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `attrs`
[INFO] [stdout]   --> src/parse/method_decl.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub(crate) attrs: Vec<Attribute>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `span`
[INFO] [stdout]   --> src/parse/method_decl.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub(crate) span: Span,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `span`
[INFO] [stdout]   --> src/parse/method_inputs.rs:54:5
[INFO] [stdout]    |
[INFO] [stdout] 54 |     pub(crate) span: Span,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `supertraits`
[INFO] [stdout]   --> src/parse/trait_decl.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub(crate) supertraits: Punctuated<TypeParamBound, Token![+]>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mockiato-codegen` due to 2 previous errors; 4 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "f143d71d10b12ccd8ba5cf06edf21f8c09c81985b8f1a367407e554116113762", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f143d71d10b12ccd8ba5cf06edf21f8c09c81985b8f1a367407e554116113762", kill_on_drop: false }`
[INFO] [stdout] f143d71d10b12ccd8ba5cf06edf21f8c09c81985b8f1a367407e554116113762