[INFO] fetching crate bounded-registers 0.1.1...
[INFO] checking bounded-registers-0.1.1 against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] extracting crate bounded-registers 0.1.1 into /workspace/builds/worker-15/source
[INFO] validating manifest of crates.io crate bounded-registers 0.1.1 on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bounded-registers 0.1.1
[INFO] finished tweaking crates.io crate bounded-registers 0.1.1
[INFO] tweaked toml for crates.io crate bounded-registers 0.1.1 written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e74821a1a4a00b7ae53e3d749d88c76a9e8ef9fab1e927dbb9dc4fc4946c2e79
[INFO] running `Command { std: "docker" "start" "-a" "e74821a1a4a00b7ae53e3d749d88c76a9e8ef9fab1e927dbb9dc4fc4946c2e79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e74821a1a4a00b7ae53e3d749d88c76a9e8ef9fab1e927dbb9dc4fc4946c2e79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e74821a1a4a00b7ae53e3d749d88c76a9e8ef9fab1e927dbb9dc4fc4946c2e79", kill_on_drop: false }`
[INFO] [stdout] e74821a1a4a00b7ae53e3d749d88c76a9e8ef9fab1e927dbb9dc4fc4946c2e79
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 753e6e17bc2b6c97a43fe9ee073ecdee77f843c0f284aca3a0af0080364e03ee
[INFO] running `Command { std: "docker" "start" "-a" "753e6e17bc2b6c97a43fe9ee073ecdee77f843c0f284aca3a0af0080364e03ee", kill_on_drop: false }`
[INFO] [stderr]     Checking bounded-registers v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]    --> src/lib.rs:315:12
[INFO] [stdout]     |
[INFO] [stdout] 315 | #![feature(const_fn)]
[INFO] [stdout]     |            ^^^^^^^^ feature has been removed
[INFO] [stdout]     |
[INFO] [stdout]     = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]    --> src/lib.rs:315:12
[INFO] [stdout]     |
[INFO] [stdout] 315 | #![feature(const_fn)]
[INFO] [stdout]     |            ^^^^^^^^ feature has been removed
[INFO] [stdout]     |
[INFO] [stdout]     = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `bounded-registers` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/macros.rs:140:13
[INFO] [stdout]     |
[INFO] [stdout] 140 |               /// Constants mapping the enum-like field names to values.
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macro invocations
[INFO] [stdout] ...
[INFO] [stdout] 401 | /     register! {
[INFO] [stdout] 402 | |         /// The status register
[INFO] [stdout] 403 | |         #[derive(Debug)]
[INFO] [stdout] 404 | |         Status,
[INFO] [stdout] ...   |
[INFO] [stdout] 419 | |         ]
[INFO] [stdout] 420 | |     }
[INFO] [stdout]     | |_____- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stdout]     = note: this warning originates in the macro `fields` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/macros.rs:140:13
[INFO] [stdout]     |
[INFO] [stdout] 140 |               /// Constants mapping the enum-like field names to values.
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macro invocations
[INFO] [stdout] ...
[INFO] [stdout] 447 | /     register! {
[INFO] [stdout] 448 | |         ///  A random number generator
[INFO] [stdout] 449 | |         #[derive(Debug)]
[INFO] [stdout] 450 | |         RNG,
[INFO] [stdout] ...   |
[INFO] [stdout] 462 | |         ]
[INFO] [stdout] 463 | |     }
[INFO] [stdout]     | |_____- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stdout]     = note: this warning originates in the macro `fields` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "753e6e17bc2b6c97a43fe9ee073ecdee77f843c0f284aca3a0af0080364e03ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "753e6e17bc2b6c97a43fe9ee073ecdee77f843c0f284aca3a0af0080364e03ee", kill_on_drop: false }`
[INFO] [stdout] 753e6e17bc2b6c97a43fe9ee073ecdee77f843c0f284aca3a0af0080364e03ee