[INFO] crate phase21 0.3.0 is already in cache
[INFO] extracting crate phase21 0.3.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/phase21/0.3.0
[INFO] extracting crate phase21 0.3.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/phase21/0.3.0
[INFO] validating manifest of phase21-0.3.0 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 phase21-0.3.0 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 phase21-0.3.0
[INFO] finished frobbing phase21-0.3.0
[INFO] frobbed toml for phase21-0.3.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/phase21/0.3.0/Cargo.toml
[INFO] started frobbing phase21-0.3.0
[INFO] finished frobbing phase21-0.3.0
[INFO] frobbed toml for phase21-0.3.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/phase21/0.3.0/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] [stderr]     Blocking waiting for file lock on package cache
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing phase21-0.3.0 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-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/phase21/0.3.0:/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] 5a07b22c32d9797ecb95480020927385c7f4dfa7603295fc35ff730d18df6c2a
[INFO] running `"docker" "start" "-a" "5a07b22c32d9797ecb95480020927385c7f4dfa7603295fc35ff730d18df6c2a"`
[INFO] [stderr]    Compiling arrayvec v0.4.11
[INFO] [stderr]    Compiling num-bigint v0.2.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.7.2
[INFO] [stderr]    Compiling blake2b_simd v0.4.1
[INFO] [stderr]    Compiling crossbeam-deque v0.7.1
[INFO] [stderr]    Compiling crossbeam v0.7.2
[INFO] [stderr]    Compiling ff_derive v0.3.0
[INFO] [stderr]    Compiling ff v0.4.0
[INFO] [stderr]    Compiling paired v0.15.0
[INFO] [stderr]    Compiling bellperson v0.2.0
[INFO] [stderr]    Compiling phase21 v0.3.0 (/opt/crater/workdir)
[INFO] [stderr] warning: the item `Arc` is imported redundantly
[INFO] [stderr]     --> src/lib.rs:1200:21
[INFO] [stderr]      |
[INFO] [stderr] 216  |     sync::Arc,
[INFO] [stderr]      |     --------- the item `Arc` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 1200 |     use std::sync::{Arc, Mutex};
[INFO] [stderr]      |                     ^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.11s
[INFO] running `"docker" "inspect" "5a07b22c32d9797ecb95480020927385c7f4dfa7603295fc35ff730d18df6c2a"`
[INFO] running `"docker" "rm" "-f" "5a07b22c32d9797ecb95480020927385c7f4dfa7603295fc35ff730d18df6c2a"`
[INFO] [stdout] 5a07b22c32d9797ecb95480020927385c7f4dfa7603295fc35ff730d18df6c2a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/phase21/0.3.0:/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] 9f9b9913b96873f233f8223a02827a50402f6950669e9f51e1199703f4384072
[INFO] running `"docker" "start" "-a" "9f9b9913b96873f233f8223a02827a50402f6950669e9f51e1199703f4384072"`
[INFO] [stderr]    Compiling phase21 v0.3.0 (/opt/crater/workdir)
[INFO] [stderr] warning: the item `Arc` is imported redundantly
[INFO] [stderr]     --> src/lib.rs:1200:21
[INFO] [stderr]      |
[INFO] [stderr] 216  |     sync::Arc,
[INFO] [stderr]      |     --------- the item `Arc` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 1200 |     use std::sync::{Arc, Mutex};
[INFO] [stderr]      |                     ^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/mimc.rs:93:17
[INFO] [stderr]    |
[INFO] [stderr] 93 |             let mut tmp_value = xl_value.map(|mut e| {
[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]   --> examples/mimc.rs:98:17
[INFO] [stderr]    |
[INFO] [stderr] 98 |             let mut tmp = cs.alloc(
[INFO] [stderr]    |                 ----^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> examples/mimc.rs:113:17
[INFO] [stderr]     |
[INFO] [stderr] 113 |             let mut new_xl_value = xl_value.map(|mut e| {
[INFO] [stderr]     |                 ----^^^^^^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> examples/mimc.rs:120:17
[INFO] [stderr]     |
[INFO] [stderr] 120 |             let mut new_xl = if i == (MIMC_ROUNDS - 1) {
[INFO] [stderr]     |                 ----^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.36s
[INFO] running `"docker" "inspect" "9f9b9913b96873f233f8223a02827a50402f6950669e9f51e1199703f4384072"`
[INFO] running `"docker" "rm" "-f" "9f9b9913b96873f233f8223a02827a50402f6950669e9f51e1199703f4384072"`
[INFO] [stdout] 9f9b9913b96873f233f8223a02827a50402f6950669e9f51e1199703f4384072
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/phase21/0.3.0:/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] a2dd8ba0ea1aa0559d396d8fd90862554c04c1d86780deea8c5e5613cd38d1da
[INFO] running `"docker" "start" "-a" "a2dd8ba0ea1aa0559d396d8fd90862554c04c1d86780deea8c5e5613cd38d1da"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/phase21-dd43063d663f4fac
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests phase21
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test src/lib.rs -  (line 154) ... ignored
[INFO] [stdout] test src/lib.rs -  (line 170) ... ignored
[INFO] [stdout] test src/lib.rs -  (line 186) ... ignored
[INFO] [stdout] test src/lib.rs -  (line 87) ... ignored
[INFO] [stdout] test src/lib.rs -  (line 13) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 4 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "a2dd8ba0ea1aa0559d396d8fd90862554c04c1d86780deea8c5e5613cd38d1da"`
[INFO] running `"docker" "rm" "-f" "a2dd8ba0ea1aa0559d396d8fd90862554c04c1d86780deea8c5e5613cd38d1da"`
[INFO] [stdout] a2dd8ba0ea1aa0559d396d8fd90862554c04c1d86780deea8c5e5613cd38d1da