[INFO] fetching crate domafic 0.2.0...
[INFO] checking domafic-0.2.0 against beta for pr-78714
[INFO] extracting crate domafic 0.2.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate domafic 0.2.0 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate domafic 0.2.0
[INFO] finished tweaking crates.io crate domafic 0.2.0
[INFO] tweaked toml for crates.io crate domafic 0.2.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9874352ff571abf5dfd0bc3ef8f347b088f5f7525fb3c707b5df3331108dbdcc
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "9874352ff571abf5dfd0bc3ef8f347b088f5f7525fb3c707b5df3331108dbdcc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9874352ff571abf5dfd0bc3ef8f347b088f5f7525fb3c707b5df3331108dbdcc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9874352ff571abf5dfd0bc3ef8f347b088f5f7525fb3c707b5df3331108dbdcc", kill_on_drop: false }`
[INFO] [stdout] 9874352ff571abf5dfd0bc3ef8f347b088f5f7525fb3c707b5df3331108dbdcc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 27ce8a1fd24870e64d8446172692e810623d8f5cc3cb818a9b578b7484627ee5
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "27ce8a1fd24870e64d8446172692e810623d8f5cc3cb818a9b578b7484627ee5", kill_on_drop: false }`
[INFO] [stderr]     Checking marksman_escape v0.1.2
[INFO] [stderr]     Checking either_n v0.2.0
[INFO] [stderr]     Checking domafic v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]    --> src/lib.rs:126:19
[INFO] [stdout]     |
[INFO] [stdout] 126 | #![cfg_attr(test, feature(conservative_impl_trait))]
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/lib.rs:315:13
[INFO] [stdout]     |
[INFO] [stdout] 315 |           div((
[INFO] [stdout]     |  _____________^
[INFO] [stdout] 316 | |             table((
[INFO] [stdout] 317 | |                 if include_rows {
[INFO] [stdout] 318 | |                     Either2::One((
[INFO] [stdout] ...   |
[INFO] [stdout] 325 | |             ))
[INFO] [stdout] 326 | |         ))
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 315 |         div(table((
[INFO] [stdout] 316 |                 if include_rows {
[INFO] [stdout] 317 |                     Either2::One((
[INFO] [stdout] 318 |                         tr("a"),
[INFO] [stdout] 319 |                         tr("b"),
[INFO] [stdout] 320 |                     ))
[INFO] [stdout]   ...
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/lib.rs:316:19
[INFO] [stdout]     |
[INFO] [stdout] 316 |               table((
[INFO] [stdout]     |  ___________________^
[INFO] [stdout] 317 | |                 if include_rows {
[INFO] [stdout] 318 | |                     Either2::One((
[INFO] [stdout] 319 | |                         tr("a"),
[INFO] [stdout] ...   |
[INFO] [stdout] 324 | |                 }
[INFO] [stdout] 325 | |             ))
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 316 |             table(if include_rows {
[INFO] [stdout] 317 |                     Either2::One((
[INFO] [stdout] 318 |                         tr("a"),
[INFO] [stdout] 319 |                         tr("b"),
[INFO] [stdout] 320 |                     ))
[INFO] [stdout] 321 |                 } else {
[INFO] [stdout]   ...
[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 E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `domafic`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "27ce8a1fd24870e64d8446172692e810623d8f5cc3cb818a9b578b7484627ee5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27ce8a1fd24870e64d8446172692e810623d8f5cc3cb818a9b578b7484627ee5", kill_on_drop: false }`
[INFO] [stdout] 27ce8a1fd24870e64d8446172692e810623d8f5cc3cb818a9b578b7484627ee5