[INFO] fetching crate bn 0.4.3...
[INFO] documenting bn-0.4.3 against try#66dfc4e010913fbed0c4ea91fc2c010004b0f441 for pr-73566
[INFO] extracting crate bn 0.4.3 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate bn 0.4.3 on toolchain 66dfc4e010913fbed0c4ea91fc2c010004b0f441
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bn 0.4.3
[INFO] finished tweaking crates.io crate bn 0.4.3
[INFO] tweaked toml for crates.io crate bn 0.4.3 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a25b1fb3f7eabe4eac72e9f73d6fda02bdb242385fff3a03daa084371608660a
[INFO] running `Command { std: "docker" "start" "-a" "a25b1fb3f7eabe4eac72e9f73d6fda02bdb242385fff3a03daa084371608660a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a25b1fb3f7eabe4eac72e9f73d6fda02bdb242385fff3a03daa084371608660a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a25b1fb3f7eabe4eac72e9f73d6fda02bdb242385fff3a03daa084371608660a", kill_on_drop: false }`
[INFO] [stdout] a25b1fb3f7eabe4eac72e9f73d6fda02bdb242385fff3a03daa084371608660a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 91e3e1fbea674ff35e7650b2103914e76a2f893bbc307e1c4eeeb1a2927b7295
[INFO] running `Command { std: "docker" "start" "-a" "91e3e1fbea674ff35e7650b2103914e76a2f893bbc307e1c4eeeb1a2927b7295", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]  Documenting bn v0.4.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around const expression
[INFO] [stdout]    --> src/arith.rs:102:27
[INFO] [stdout]     |
[INFO] [stdout] 102 |         let mut buf = [0; (8 * 8)];
[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 const expression
[INFO] [stdout]    --> src/arith.rs:118:27
[INFO] [stdout]     |
[INFO] [stdout] 118 |         let mut buf = [0; (8 * 8)];
[INFO] [stdout]     |                           ^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around const expression
[INFO] [stdout]    --> src/arith.rs:130:27
[INFO] [stdout]     |
[INFO] [stdout] 130 |         let mut buf = [0; (4 * 8)];
[INFO] [stdout]     |                           ^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around const expression
[INFO] [stdout]    --> src/arith.rs:146:27
[INFO] [stdout]     |
[INFO] [stdout] 146 |         let mut buf = [0; (4 * 8)];
[INFO] [stdout]     |                           ^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.05s
[INFO] running `Command { std: "docker" "inspect" "91e3e1fbea674ff35e7650b2103914e76a2f893bbc307e1c4eeeb1a2927b7295", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91e3e1fbea674ff35e7650b2103914e76a2f893bbc307e1c4eeeb1a2927b7295", kill_on_drop: false }`
[INFO] [stdout] 91e3e1fbea674ff35e7650b2103914e76a2f893bbc307e1c4eeeb1a2927b7295