[INFO] fetching crate powersoftau 0.1.0...
[INFO] checking powersoftau-0.1.0 against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] extracting crate powersoftau 0.1.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate powersoftau 0.1.0 on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate powersoftau 0.1.0
[INFO] finished tweaking crates.io crate powersoftau 0.1.0
[INFO] tweaked toml for crates.io crate powersoftau 0.1.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"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" "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" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 860e69969eb7c3e68963af3b8630fb4fb3e26147e302b41ee81eaa40387c2c00
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "860e69969eb7c3e68963af3b8630fb4fb3e26147e302b41ee81eaa40387c2c00"`
[INFO] [stderr]     Checking generic-array v0.8.3
[INFO] [stderr]     Checking pairing v0.13.2
[INFO] [stderr]     Checking digest v0.6.2
[INFO] [stderr]     Checking crypto-mac v0.4.0
[INFO] [stderr]     Checking blake2 v0.6.1
[INFO] [stderr]     Checking powersoftau v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: the item `Arc` is imported redundantly
[INFO] [stderr]    --> src/lib.rs:664:21
[INFO] [stderr]     |
[INFO] [stderr] 44  | use std::sync::{Arc, Mutex};
[INFO] [stderr]     |                 --- the item `Arc` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 664 |     use std::sync::{Arc, Mutex};
[INFO] [stderr]     |                     ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Mutex` is imported redundantly
[INFO] [stderr]    --> src/lib.rs:664:26
[INFO] [stderr]     |
[INFO] [stderr] 44  | use std::sync::{Arc, Mutex};
[INFO] [stderr]     |                      ----- the item `Mutex` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 664 |     use std::sync::{Arc, Mutex};
[INFO] [stderr]     |                          ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Arc` is imported redundantly
[INFO] [stderr]    --> src/lib.rs:664:21
[INFO] [stderr]     |
[INFO] [stderr] 44  | use std::sync::{Arc, Mutex};
[INFO] [stderr]     |                 --- the item `Arc` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 664 |     use std::sync::{Arc, Mutex};
[INFO] [stderr]     |                     ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Mutex` is imported redundantly
[INFO] [stderr]    --> src/lib.rs:664:26
[INFO] [stderr]     |
[INFO] [stderr] 44  | use std::sync::{Arc, Mutex};
[INFO] [stderr]     |                      ----- the item `Mutex` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 664 |     use std::sync::{Arc, Mutex};
[INFO] [stderr]     |                          ^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.28s
[INFO] running `"docker" "inspect" "860e69969eb7c3e68963af3b8630fb4fb3e26147e302b41ee81eaa40387c2c00"`
[INFO] running `"docker" "rm" "-f" "860e69969eb7c3e68963af3b8630fb4fb3e26147e302b41ee81eaa40387c2c00"`
[INFO] [stdout] 860e69969eb7c3e68963af3b8630fb4fb3e26147e302b41ee81eaa40387c2c00