[INFO] fetching crate mockiato 0.9.5...
[INFO] checking mockiato-0.9.5 against master#30f74ff0dc4d66debc8b50724c446f817e5f75f4 for pr-121848-1
[INFO] extracting crate mockiato 0.9.5 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate mockiato 0.9.5 on toolchain 30f74ff0dc4d66debc8b50724c446f817e5f75f4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-3-tc1/source/rust-toolchain
[INFO] started tweaking crates.io crate mockiato 0.9.5
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate mockiato 0.9.5
[INFO] tweaked toml for crates.io crate mockiato 0.9.5 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate mockiato 0.9.5 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" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mockiato-codegen v0.9.5
[INFO] [stderr]   Downloaded proc-macro2 v1.0.4
[INFO] [stderr]   Downloaded nearly_eq v0.2.4
[INFO] [stderr]   Downloaded nameof v1.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c7accab6c3427c67ba547844aef68a924f62c91320a367572477a81de7d37050
[INFO] running `Command { std: "docker" "start" "-a" "c7accab6c3427c67ba547844aef68a924f62c91320a367572477a81de7d37050", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c7accab6c3427c67ba547844aef68a924f62c91320a367572477a81de7d37050", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7accab6c3427c67ba547844aef68a924f62c91320a367572477a81de7d37050", kill_on_drop: false }`
[INFO] [stdout] c7accab6c3427c67ba547844aef68a924f62c91320a367572477a81de7d37050
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ff0654f2c7e36a9f049072ec3d839884c217830013a8a157e3dab205d7ba2c2d
[INFO] running `Command { std: "docker" "start" "-a" "ff0654f2c7e36a9f049072ec3d839884c217830013a8a157e3dab205d7ba2c2d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.4
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling unicode-segmentation v1.3.0
[INFO] [stderr]     Checking nameof v1.1.0
[INFO] [stderr]     Checking nearly_eq v0.2.4
[INFO] [stderr]    Compiling mockiato-codegen v0.9.5
[INFO] [stderr]    Compiling mockiato v0.9.5 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]    --> src/lib.rs:110:48
[INFO] [stdout]     |
[INFO] [stdout] 110 | #![cfg_attr(rustc_is_nightly, feature(doc_cfg, external_doc, specialization))]
[INFO] [stdout]     |                                                ^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]     |
[INFO] [stdout]     = note: use #[doc = include_str!("filename")] instead, which handles macro invocations
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]    --> src/lib.rs:110:48
[INFO] [stdout]     |
[INFO] [stdout] 110 | #![cfg_attr(rustc_is_nightly, feature(doc_cfg, external_doc, specialization))]
[INFO] [stdout]     |                                                ^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]     |
[INFO] [stdout]     = note: use #[doc = include_str!("filename")] instead, which handles macro invocations
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes
[INFO] [stdout]    --> src/lib.rs:110:62
[INFO] [stdout]     |
[INFO] [stdout] 110 | #![cfg_attr(rustc_is_nightly, feature(doc_cfg, external_doc, specialization))]
[INFO] [stdout]     |                                                              ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]     = help: consider using `min_specialization` instead, which is more stable and complete
[INFO] [stdout]     = note: `#[warn(incomplete_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unknown `doc` attribute `include`
[INFO] [stdout]    --> src/lib.rs:207:34
[INFO] [stdout]     |
[INFO] [stdout] 207 | #[cfg_attr(rustc_is_nightly, doc(include = "../readme.md"))]
[INFO] [stdout]     |                              ----^^^^^^^^^^^^^^^^^^^^^^^^- help: use `doc = include_str!` instead: `#[doc = include_str!("../readme.md")]`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[deny(invalid_doc_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes
[INFO] [stdout]    --> src/lib.rs:110:62
[INFO] [stdout]     |
[INFO] [stdout] 110 | #![cfg_attr(rustc_is_nightly, feature(doc_cfg, external_doc, specialization))]
[INFO] [stdout]     |                                                              ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]     = help: consider using `min_specialization` instead, which is more stable and complete
[INFO] [stdout]     = note: `#[warn(incomplete_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `RefCell` is imported redundantly
[INFO] [stdout]    --> src/method_call.rs:225:9
[INFO] [stdout]     |
[INFO] [stdout] 222 |     use super::*;
[INFO] [stdout]     |         -------- the item `RefCell` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 225 |     use std::cell::RefCell;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unknown `doc` attribute `include`
[INFO] [stdout]    --> src/lib.rs:207:34
[INFO] [stdout]     |
[INFO] [stdout] 207 | #[cfg_attr(rustc_is_nightly, doc(include = "../readme.md"))]
[INFO] [stdout]     |                              ----^^^^^^^^^^^^^^^^^^^^^^^^- help: use `doc = include_str!` instead: `#[doc = include_str!("../readme.md")]`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[deny(invalid_doc_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mockiato` (lib) due to 3 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 2 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mockiato` (lib test) due to 3 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "ff0654f2c7e36a9f049072ec3d839884c217830013a8a157e3dab205d7ba2c2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff0654f2c7e36a9f049072ec3d839884c217830013a8a157e3dab205d7ba2c2d", kill_on_drop: false }`
[INFO] [stdout] ff0654f2c7e36a9f049072ec3d839884c217830013a8a157e3dab205d7ba2c2d
