[INFO] fetching crate langcraft_api 0.1.2...
[INFO] testing langcraft_api-0.1.2 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-8
[INFO] extracting crate langcraft_api 0.1.2 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate langcraft_api 0.1.2
[INFO] finished tweaking crates.io crate langcraft_api 0.1.2
[INFO] tweaked toml for crates.io crate langcraft_api 0.1.2 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate langcraft_api 0.1.2 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 08649cc18a385f4f73ee29cba96a9500c845ed0336df161e7f72aa147ae0ee71
[INFO] running `Command { std: "docker" "start" "-a" "08649cc18a385f4f73ee29cba96a9500c845ed0336df161e7f72aa147ae0ee71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "08649cc18a385f4f73ee29cba96a9500c845ed0336df161e7f72aa147ae0ee71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08649cc18a385f4f73ee29cba96a9500c845ed0336df161e7f72aa147ae0ee71", kill_on_drop: false }`
[INFO] [stdout] 08649cc18a385f4f73ee29cba96a9500c845ed0336df161e7f72aa147ae0ee71
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ee5a1efcb42d93bf62d7d5879386c755d114368c2a18f13d17dad53be1e8e255
[INFO] running `Command { std: "docker" "start" "-a" "ee5a1efcb42d93bf62d7d5879386c755d114368c2a18f13d17dad53be1e8e255", kill_on_drop: false }`
[INFO] [stderr]    Compiling langcraft_api v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: attributes starting with `rustc` are reserved for use by the `rustc` compiler
[INFO] [stdout]    --> src/lib.rs:189:7
[INFO] [stdout]     |
[INFO] [stdout] 189 |     #[rustc_args_required_const(0, 1)]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `rustc_args_required_const` in this scope
[INFO] [stdout]    --> src/lib.rs:189:7
[INFO] [stdout]     |
[INFO] [stdout] 189 |     #[rustc_args_required_const(0, 1)]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `rustc_attrs` is internal to the compiler or standard library
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(rustc_attrs)]
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: using it is strongly discouraged
[INFO] [stdout]   = note: `#[warn(internal_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `langcraft_api` (lib) due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "ee5a1efcb42d93bf62d7d5879386c755d114368c2a18f13d17dad53be1e8e255", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee5a1efcb42d93bf62d7d5879386c755d114368c2a18f13d17dad53be1e8e255", kill_on_drop: false }`
[INFO] [stdout] ee5a1efcb42d93bf62d7d5879386c755d114368c2a18f13d17dad53be1e8e255
