[INFO] crate powersoftau 0.1.0 is already in cache
[INFO] extracting crate powersoftau 0.1.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/powersoftau/0.1.0
[INFO] extracting crate powersoftau 0.1.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/powersoftau/0.1.0
[INFO] validating manifest of powersoftau-0.1.0 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of powersoftau-0.1.0 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing powersoftau-0.1.0
[INFO] finished frobbing powersoftau-0.1.0
[INFO] frobbed toml for powersoftau-0.1.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/powersoftau/0.1.0/Cargo.toml
[INFO] started frobbing powersoftau-0.1.0
[INFO] finished frobbing powersoftau-0.1.0
[INFO] frobbed toml for powersoftau-0.1.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/powersoftau/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing powersoftau-0.1.0 against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/powersoftau/0.1.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 4426ddac039a923bf11875d45f817dbf4b2aebd0216205694dd752410b14c964
[INFO] running `"docker" "start" "-a" "4426ddac039a923bf11875d45f817dbf4b2aebd0216205694dd752410b14c964"`
[INFO] [stderr]    Compiling crossbeam v0.3.2
[INFO] [stderr]    Compiling generic-array v0.8.3
[INFO] [stderr]    Compiling pairing v0.13.2
[INFO] [stderr]    Compiling crypto-mac v0.4.0
[INFO] [stderr]    Compiling digest v0.6.2
[INFO] [stderr]    Compiling blake2 v0.6.1
[INFO] [stderr]    Compiling powersoftau v0.1.0 (/opt/crater/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]     Finished dev [unoptimized + debuginfo] target(s) in 11.32s
[INFO] running `"docker" "inspect" "4426ddac039a923bf11875d45f817dbf4b2aebd0216205694dd752410b14c964"`
[INFO] running `"docker" "rm" "-f" "4426ddac039a923bf11875d45f817dbf4b2aebd0216205694dd752410b14c964"`
[INFO] [stdout] 4426ddac039a923bf11875d45f817dbf4b2aebd0216205694dd752410b14c964
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/powersoftau/0.1.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] f3806384844b4ab6f017e934ce45f2ff43b1250963ca6d75be2b5c8408f721fd
[INFO] running `"docker" "start" "-a" "f3806384844b4ab6f017e934ce45f2ff43b1250963ca6d75be2b5c8408f721fd"`
[INFO] [stderr]    Compiling powersoftau v0.1.0 (/opt/crater/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]     Finished dev [unoptimized + debuginfo] target(s) in 3.60s
[INFO] running `"docker" "inspect" "f3806384844b4ab6f017e934ce45f2ff43b1250963ca6d75be2b5c8408f721fd"`
[INFO] running `"docker" "rm" "-f" "f3806384844b4ab6f017e934ce45f2ff43b1250963ca6d75be2b5c8408f721fd"`
[INFO] [stdout] f3806384844b4ab6f017e934ce45f2ff43b1250963ca6d75be2b5c8408f721fd
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/powersoftau/0.1.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] bb825ec2e166a3510af136e48a93797e023567711d3df88c6ede00f6a9285601
[INFO] running `"docker" "start" "-a" "bb825ec2e166a3510af136e48a93797e023567711d3df88c6ede00f6a9285601"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/powersoftau-c86de0bd09aa846c
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test test_hash_to_g2 ... ok
[INFO] [stdout] test test_same_ratio ... ok
[INFO] [stdout] test test_pubkey_serialization ... ok
[INFO] [stderr] error: process didn't exit successfully: `/opt/crater/target/debug/deps/powersoftau-c86de0bd09aa846c` (signal: 9, SIGKILL: kill)
[INFO] running `"docker" "inspect" "bb825ec2e166a3510af136e48a93797e023567711d3df88c6ede00f6a9285601"`
[INFO] running `"docker" "rm" "-f" "bb825ec2e166a3510af136e48a93797e023567711d3df88c6ede00f6a9285601"`
[INFO] [stdout] bb825ec2e166a3510af136e48a93797e023567711d3df88c6ede00f6a9285601