[INFO] crate powersoftau 0.1.0 is already in cache
[INFO] extracting crate powersoftau 0.1.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/powersoftau/0.1.0
[INFO] extracting crate powersoftau 0.1.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/powersoftau/0.1.0
[INFO] validating manifest of powersoftau-0.1.0 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of powersoftau-0.1.0 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "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-1.38-1/sources/1.37.0/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-1.38-1/sources/beta-2019-08-13/reg/powersoftau/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing powersoftau-0.1.0 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 09ca9b51fef5b986ca5319c723000552ea9df0f721d81b88e4a4dc320941c134
[INFO] running `"docker" "start" "-a" "09ca9b51fef5b986ca5319c723000552ea9df0f721d81b88e4a4dc320941c134"`
[INFO] [stderr]    Compiling pairing v0.13.2
[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 9.91s
[INFO] running `"docker" "inspect" "09ca9b51fef5b986ca5319c723000552ea9df0f721d81b88e4a4dc320941c134"`
[INFO] running `"docker" "rm" "-f" "09ca9b51fef5b986ca5319c723000552ea9df0f721d81b88e4a4dc320941c134"`
[INFO] [stdout] 09ca9b51fef5b986ca5319c723000552ea9df0f721d81b88e4a4dc320941c134
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 46ea13231a894cbb2860e643eca05344a3b761ff93b3039a3dedc657863e32f2
[INFO] running `"docker" "start" "-a" "46ea13231a894cbb2860e643eca05344a3b761ff93b3039a3dedc657863e32f2"`
[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 3.68s
[INFO] running `"docker" "inspect" "46ea13231a894cbb2860e643eca05344a3b761ff93b3039a3dedc657863e32f2"`
[INFO] running `"docker" "rm" "-f" "46ea13231a894cbb2860e643eca05344a3b761ff93b3039a3dedc657863e32f2"`
[INFO] [stdout] 46ea13231a894cbb2860e643eca05344a3b761ff93b3039a3dedc657863e32f2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 3967eee285141a1548c5ab8f7b64bd697a28c3b609c228f0959ed99939645a50
[INFO] running `"docker" "start" "-a" "3967eee285141a1548c5ab8f7b64bd697a28c3b609c228f0959ed99939645a50"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/powersoftau-8aff9170c9633ad1
[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-8aff9170c9633ad1` (signal: 9, SIGKILL: kill)
[INFO] running `"docker" "inspect" "3967eee285141a1548c5ab8f7b64bd697a28c3b609c228f0959ed99939645a50"`
[INFO] running `"docker" "rm" "-f" "3967eee285141a1548c5ab8f7b64bd697a28c3b609c228f0959ed99939645a50"`
[INFO] [stdout] 3967eee285141a1548c5ab8f7b64bd697a28c3b609c228f0959ed99939645a50