[INFO] crate phase2 0.2.2 is already in cache
[INFO] extracting crate phase2 0.2.2 into work/ex/beta-1.38-1/sources/1.37.0/reg/phase2/0.2.2
[INFO] extracting crate phase2 0.2.2 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/phase2/0.2.2
[INFO] validating manifest of phase2-0.2.2 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 phase2-0.2.2 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 phase2-0.2.2
[INFO] finished frobbing phase2-0.2.2
[INFO] frobbed toml for phase2-0.2.2 written to work/ex/beta-1.38-1/sources/1.37.0/reg/phase2/0.2.2/Cargo.toml
[INFO] started frobbing phase2-0.2.2
[INFO] finished frobbing phase2-0.2.2
[INFO] frobbed toml for phase2-0.2.2 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/phase2/0.2.2/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 phase2-0.2.2 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-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/phase2/0.2.2:/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] ab17ff0d910d1a1e2160b429fcf01b318c27271f1bd512fd58769cada1001d8a
[INFO] running `"docker" "start" "-a" "ab17ff0d910d1a1e2160b429fcf01b318c27271f1bd512fd58769cada1001d8a"`
[INFO] [stderr]    Compiling crossbeam v0.3.2
[INFO] [stderr]    Compiling pairing v0.14.2
[INFO] [stderr]    Compiling bellman v0.1.0
[INFO] [stderr]    Compiling phase2 v0.2.2 (/opt/crater/workdir)
[INFO] [stderr] warning: the item `Arc` is imported redundantly
[INFO] [stderr]     --> src/lib.rs:1203:21
[INFO] [stderr]      |
[INFO] [stderr] 225  |         Arc
[INFO] [stderr]      |         --- the item `Arc` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 1203 |     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 14.64s
[INFO] running `"docker" "inspect" "ab17ff0d910d1a1e2160b429fcf01b318c27271f1bd512fd58769cada1001d8a"`
[INFO] running `"docker" "rm" "-f" "ab17ff0d910d1a1e2160b429fcf01b318c27271f1bd512fd58769cada1001d8a"`
[INFO] [stdout] ab17ff0d910d1a1e2160b429fcf01b318c27271f1bd512fd58769cada1001d8a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/phase2/0.2.2:/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] d9df0936112b29dc8e1dd8af941ea3b9bdf79e3d186fa00e9245c1cffcfb3a47
[INFO] running `"docker" "start" "-a" "d9df0936112b29dc8e1dd8af941ea3b9bdf79e3d186fa00e9245c1cffcfb3a47"`
[INFO] [stderr]    Compiling phase2 v0.2.2 (/opt/crater/workdir)
[INFO] [stderr] warning: the item `Arc` is imported redundantly
[INFO] [stderr]     --> src/lib.rs:1203:21
[INFO] [stderr]      |
[INFO] [stderr] 225  |         Arc
[INFO] [stderr]      |         --- the item `Arc` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 1203 |     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:111:17
[INFO] [stderr]     |
[INFO] [stderr] 111 |             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:116:17
[INFO] [stderr]     |
[INFO] [stderr] 116 |             let mut tmp = cs.alloc(|| "tmp", || {
[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:130:17
[INFO] [stderr]     |
[INFO] [stderr] 130 |             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:137:17
[INFO] [stderr]     |
[INFO] [stderr] 137 |             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 3.91s
[INFO] running `"docker" "inspect" "d9df0936112b29dc8e1dd8af941ea3b9bdf79e3d186fa00e9245c1cffcfb3a47"`
[INFO] running `"docker" "rm" "-f" "d9df0936112b29dc8e1dd8af941ea3b9bdf79e3d186fa00e9245c1cffcfb3a47"`
[INFO] [stdout] d9df0936112b29dc8e1dd8af941ea3b9bdf79e3d186fa00e9245c1cffcfb3a47
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/phase2/0.2.2:/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] 0c3e8d8f3e1534965c17262fad105b3c978f3909f8df37e5dd7f9aab9502b59d
[INFO] running `"docker" "start" "-a" "0c3e8d8f3e1534965c17262fad105b3c978f3909f8df37e5dd7f9aab9502b59d"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/phase2-8db39638576923b7
[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 phase2
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test src/lib.rs -  (line 152) ... ignored
[INFO] [stdout] test src/lib.rs -  (line 168) ... ignored
[INFO] [stdout] test src/lib.rs -  (line 184) ... ignored
[INFO] [stdout] test src/lib.rs -  (line 85) ... 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" "0c3e8d8f3e1534965c17262fad105b3c978f3909f8df37e5dd7f9aab9502b59d"`
[INFO] running `"docker" "rm" "-f" "0c3e8d8f3e1534965c17262fad105b3c978f3909f8df37e5dd7f9aab9502b59d"`
[INFO] [stdout] 0c3e8d8f3e1534965c17262fad105b3c978f3909f8df37e5dd7f9aab9502b59d