[INFO] fetching crate rustc-ap-rustc_macros 727.0.0...
[INFO] testing rustc-ap-rustc_macros-727.0.0 against 1.99.0-beta.8+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate rustc-ap-rustc_macros 727.0.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate rustc-ap-rustc_macros 727.0.0
[INFO] finished tweaking crates.io crate rustc-ap-rustc_macros 727.0.0
[INFO] tweaked toml for crates.io crate rustc-ap-rustc_macros 727.0.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rustc-ap-rustc_macros 727.0.0 on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 6 packages to highest compatible versions
[INFO] [stderr]       Adding syn v1.0.109 (available: v3.0.9)
[INFO] [stderr]       Adding synstructure v0.12.6 (available: v0.14.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded synstructure v0.12.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] cb577b9d7ec2c5dd95c6d71b0b444286c3ff4f11987ba8403e0b832b862864ed
[INFO] running `Command { std: "docker" "start" "cb577b9d7ec2c5dd95c6d71b0b444286c3ff4f11987ba8403e0b832b862864ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cb577b9d7ec2c5dd95c6d71b0b444286c3ff4f11987ba8403e0b832b862864ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "cb577b9d7ec2c5dd95c6d71b0b444286c3ff4f11987ba8403e0b832b862864ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cb577b9d7ec2c5dd95c6d71b0b444286c3ff4f11987ba8403e0b832b862864ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "cb577b9d7ec2c5dd95c6d71b0b444286c3ff4f11987ba8403e0b832b862864ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling unicode-xid v0.2.6
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling rustc-ap-rustc_macros v727.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_diagnostic)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `parse_quote`
[INFO] [stdout]  --> src/query.rs:8:47
[INFO] [stdout]   |
[INFO] [stdout] 8 |     braced, parenthesized, parse_macro_input, parse_quote, AttrStyle, Attribute, Block, Error,
[INFO] [stdout]   |                                               ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the `must_use` attribute cannot be used on statements
[INFO] [stdout]    --> src/session_diagnostic.rs:590:19
[INFO] [stdout]     |
[INFO] [stdout] 590 |                 #[must_use]
[INFO] [stdout]     |                   ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: the `must_use` attribute can be applied to data types, functions, and traits
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustc-ap-rustc_macros` (lib) due to 1 previous error; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "cb577b9d7ec2c5dd95c6d71b0b444286c3ff4f11987ba8403e0b832b862864ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb577b9d7ec2c5dd95c6d71b0b444286c3ff4f11987ba8403e0b832b862864ed", kill_on_drop: false }`
[INFO] [stdout] cb577b9d7ec2c5dd95c6d71b0b444286c3ff4f11987ba8403e0b832b862864ed
