[INFO] fetching crate amt-macros 0.2.1...
[INFO] testing amt-macros-0.2.1 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate amt-macros 0.2.1 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate amt-macros 0.2.1
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate amt-macros 0.2.1
[INFO] tweaked toml for crates.io crate amt-macros 0.2.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate amt-macros 0.2.1 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate amt-macros 0.2.1 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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4ef96d0ba36d9ffa4526b45e4f076accdf1082bfaedfd0a6abe6562435e74d10
[INFO] running `Command { std: "docker" "start" "-a" "4ef96d0ba36d9ffa4526b45e4f076accdf1082bfaedfd0a6abe6562435e74d10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4ef96d0ba36d9ffa4526b45e4f076accdf1082bfaedfd0a6abe6562435e74d10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ef96d0ba36d9ffa4526b45e4f076accdf1082bfaedfd0a6abe6562435e74d10", kill_on_drop: false }`
[INFO] [stdout] 4ef96d0ba36d9ffa4526b45e4f076accdf1082bfaedfd0a6abe6562435e74d10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 985e0d32428bed570e79ab9869135a3a8d8d5202c1bbab0337ddbf5487307307
[INFO] running `Command { std: "docker" "start" "-a" "985e0d32428bed570e79ab9869135a3a8d8d5202c1bbab0337ddbf5487307307", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.92
[INFO] [stderr]    Compiling unicode-ident v1.0.14
[INFO] [stderr]    Compiling anyhow v1.0.94
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.90
[INFO] [stderr]    Compiling amt-macros v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0635]: unknown feature `cfg_match`
[INFO] [stdout]   --> src/lib.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 | #![feature(cfg_match)]
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `amt-macros` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "985e0d32428bed570e79ab9869135a3a8d8d5202c1bbab0337ddbf5487307307", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "985e0d32428bed570e79ab9869135a3a8d8d5202c1bbab0337ddbf5487307307", kill_on_drop: false }`
[INFO] [stdout] 985e0d32428bed570e79ab9869135a3a8d8d5202c1bbab0337ddbf5487307307