[INFO] crate num-bigint-dig 0.5.0 is already in cache
[INFO] checking num-bigint-dig-0.5.0 against try#1a608893c03d7722effeb0058e82770bd36b4b3c for pr-66504-1
[INFO] extracting crate num-bigint-dig 0.5.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate num-bigint-dig 0.5.0 on toolchain 1a608893c03d7722effeb0058e82770bd36b4b3c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate num-bigint-dig 0.5.0
[INFO] finished tweaking crates.io crate num-bigint-dig 0.5.0
[INFO] tweaked toml for crates.io crate num-bigint-dig 0.5.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "RUSTFLAGS=--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" "/opt/rustwide/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] bd1f35623f8f47a4193208f0dca5945ab2b54889318520422c4be9d32254b462
[INFO] running `"docker" "start" "-a" "bd1f35623f8f47a4193208f0dca5945ab2b54889318520422c4be9d32254b462"`
[INFO] [stderr]    Compiling num-traits v0.2.10
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling num-bigint-dig v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking num-iter v0.1.39
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/algorithms/mac.rs:1658:13
[INFO] [stderr]      |
[INFO] [stderr] 1658 |         let mut a1 = &mut [0; 1341];
[INFO] [stderr]      |             ----^^
[INFO] [stderr]      |             |
[INFO] [stderr]      |             help: remove this `mut`
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/algorithms/mac.rs:1659:13
[INFO] [stderr]      |
[INFO] [stderr] 1659 |         let mut a2 = &mut [0; 1341];
[INFO] [stderr]      |             ----^^
[INFO] [stderr]      |             |
[INFO] [stderr]      |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/algorithms/mac.rs:1660:13
[INFO] [stderr]      |
[INFO] [stderr] 1660 |         let mut a3 = &mut [0; 1341];
[INFO] [stderr]      |             ----^^
[INFO] [stderr]      |             |
[INFO] [stderr]      |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.28s
[INFO] running `"docker" "inspect" "bd1f35623f8f47a4193208f0dca5945ab2b54889318520422c4be9d32254b462"`
[INFO] running `"docker" "rm" "-f" "bd1f35623f8f47a4193208f0dca5945ab2b54889318520422c4be9d32254b462"`
[INFO] [stdout] bd1f35623f8f47a4193208f0dca5945ab2b54889318520422c4be9d32254b462