[INFO] fetching crate politeness-macro-impl 0.1.0...
[INFO] testing politeness-macro-impl-0.1.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate politeness-macro-impl 0.1.0 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate politeness-macro-impl 0.1.0
[INFO] finished tweaking crates.io crate politeness-macro-impl 0.1.0
[INFO] tweaked toml for crates.io crate politeness-macro-impl 0.1.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate politeness-macro-impl 0.1.0 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "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" "+1.90.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d3963f90b551ccea288e5d4cb091401935e98d5689d08ad724ca3eee4ccdb5af
[INFO] running `Command { std: "docker" "start" "-a" "d3963f90b551ccea288e5d4cb091401935e98d5689d08ad724ca3eee4ccdb5af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d3963f90b551ccea288e5d4cb091401935e98d5689d08ad724ca3eee4ccdb5af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3963f90b551ccea288e5d4cb091401935e98d5689d08ad724ca3eee4ccdb5af", kill_on_drop: false }`
[INFO] [stdout] d3963f90b551ccea288e5d4cb091401935e98d5689d08ad724ca3eee4ccdb5af
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7c4e46ac836ae8022bf577278e3c6716d4bb08e1ee2487373f9cf780f30f0e2e
[INFO] running `Command { std: "docker" "start" "-a" "7c4e46ac836ae8022bf577278e3c6716d4bb08e1ee2487373f9cf780f30f0e2e", kill_on_drop: false }`
[INFO] [stderr]    Compiling politeness-macro-impl v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_hygiene)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(proc_macro_span)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(extend_one)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `politeness-macro-impl` (lib) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "7c4e46ac836ae8022bf577278e3c6716d4bb08e1ee2487373f9cf780f30f0e2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c4e46ac836ae8022bf577278e3c6716d4bb08e1ee2487373f9cf780f30f0e2e", kill_on_drop: false }`
[INFO] [stdout] 7c4e46ac836ae8022bf577278e3c6716d4bb08e1ee2487373f9cf780f30f0e2e