[INFO] fetching crate labrador-ldpc 1.0.0...
[INFO] checking labrador-ldpc-1.0.0 against beta for pr-78714
[INFO] extracting crate labrador-ldpc 1.0.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate labrador-ldpc 1.0.0 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 labrador-ldpc 1.0.0
[INFO] finished tweaking crates.io crate labrador-ldpc 1.0.0
[INFO] tweaked toml for crates.io crate labrador-ldpc 1.0.0 written to /workspace/builds/worker-5/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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 3387f4c2ecce73ec6c5fd87be92a7ebcca21b6a7ef94d0391cfac15eca91459a
[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" "3387f4c2ecce73ec6c5fd87be92a7ebcca21b6a7ef94d0391cfac15eca91459a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3387f4c2ecce73ec6c5fd87be92a7ebcca21b6a7ef94d0391cfac15eca91459a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3387f4c2ecce73ec6c5fd87be92a7ebcca21b6a7ef94d0391cfac15eca91459a", kill_on_drop: false }`
[INFO] [stdout] 3387f4c2ecce73ec6c5fd87be92a7ebcca21b6a7ef94d0391cfac15eca91459a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] b671d8909f21220eaeba004c2725531de2affe951ee3fbcdd30752ddb4f65249
[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" "b671d8909f21220eaeba004c2725531de2affe951ee3fbcdd30752ddb4f65249", kill_on_drop: false }`
[INFO] [stderr]     Checking labrador-ldpc v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/codes/compact_parity_checks.rs:17:20
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub const HZ: u8 = (0 << 6);
[INFO] [stdout]    |                    ^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/codes/compact_parity_checks.rs:18:20
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub const HI: u8 = (1 << 6);
[INFO] [stdout]    |                    ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/codes/compact_parity_checks.rs:110:20
[INFO] [stdout]     |
[INFO] [stdout] 110 | pub const HP: u8 = (2 << 6);
[INFO] [stdout]     |                    ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/decoder.rs:105:9
[INFO] [stdout]     |
[INFO] [stdout] 105 |         (2 * self.paritycheck_sum() as usize + 3*self.n() + 3*self.punctured_bits() - 2*self.k())
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/codes/compact_parity_checks.rs:17:20
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub const HZ: u8 = (0 << 6);
[INFO] [stdout]    |                    ^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/codes/compact_parity_checks.rs:18:20
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub const HI: u8 = (1 << 6);
[INFO] [stdout]    |                    ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/codes/compact_parity_checks.rs:110:20
[INFO] [stdout]     |
[INFO] [stdout] 110 | pub const HP: u8 = (2 << 6);
[INFO] [stdout]     |                    ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/decoder.rs:105:9
[INFO] [stdout]     |
[INFO] [stdout] 105 |         (2 * self.paritycheck_sum() as usize + 3*self.n() + 3*self.punctured_bits() - 2*self.k())
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> benches/decode.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> benches/iter_paritychecks.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[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 E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `labrador-ldpc`
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> benches/encode.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[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 E0554`.
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "b671d8909f21220eaeba004c2725531de2affe951ee3fbcdd30752ddb4f65249", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b671d8909f21220eaeba004c2725531de2affe951ee3fbcdd30752ddb4f65249", kill_on_drop: false }`
[INFO] [stdout] b671d8909f21220eaeba004c2725531de2affe951ee3fbcdd30752ddb4f65249