[INFO] crate bigint2 0.1.0 is already in cache
[INFO] extracting crate bigint2 0.1.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/bigint2/0.1.0
[INFO] extracting crate bigint2 0.1.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/bigint2/0.1.0
[INFO] validating manifest of bigint2-0.1.0 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 bigint2-0.1.0 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 bigint2-0.1.0
[INFO] finished frobbing bigint2-0.1.0
[INFO] frobbed toml for bigint2-0.1.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/bigint2/0.1.0/Cargo.toml
[INFO] started frobbing bigint2-0.1.0
[INFO] finished frobbing bigint2-0.1.0
[INFO] frobbed toml for bigint2-0.1.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/bigint2/0.1.0/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 bigint2-0.1.0 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/bigint2/0.1.0:/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] 0c701dd2f0f4f3d2bc0aaf0f77bed4ee804ee95504cbf35589397719e4b0e91f
[INFO] running `"docker" "start" "-a" "0c701dd2f0f4f3d2bc0aaf0f77bed4ee804ee95504cbf35589397719e4b0e91f"`
[INFO] [stderr]    Compiling heapsize v0.3.9
[INFO] [stderr]    Compiling elastic-array v0.7.0
[INFO] [stderr]    Compiling rlp2 v0.2.0
[INFO] [stderr]    Compiling bigint2 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: constant item is never used: `ZERO_BIG_DIGIT`
[INFO] [stderr]   --> src/algorithms.rs:31:5
[INFO] [stderr]    |
[INFO] [stderr] 31 |     pub const ZERO_BIG_DIGIT: BigDigit = 0;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `to_doublebigdigit`
[INFO] [stderr]   --> src/algorithms.rs:56:5
[INFO] [stderr]    |
[INFO] [stderr] 56 |     pub fn to_doublebigdigit(hi: BigDigit, lo: BigDigit) -> DoubleBigDigit {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.37s
[INFO] running `"docker" "inspect" "0c701dd2f0f4f3d2bc0aaf0f77bed4ee804ee95504cbf35589397719e4b0e91f"`
[INFO] running `"docker" "rm" "-f" "0c701dd2f0f4f3d2bc0aaf0f77bed4ee804ee95504cbf35589397719e4b0e91f"`
[INFO] [stdout] 0c701dd2f0f4f3d2bc0aaf0f77bed4ee804ee95504cbf35589397719e4b0e91f
[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/bigint2/0.1.0:/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] 461805cc8c67d8bbff20c270111ff80a50ef3086afed165ec2eebdb59b577eeb
[INFO] running `"docker" "start" "-a" "461805cc8c67d8bbff20c270111ff80a50ef3086afed165ec2eebdb59b577eeb"`
[INFO] [stderr]    Compiling bigint2 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: constant item is never used: `ZERO_BIG_DIGIT`
[INFO] [stderr]   --> src/algorithms.rs:31:5
[INFO] [stderr]    |
[INFO] [stderr] 31 |     pub const ZERO_BIG_DIGIT: BigDigit = 0;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `to_doublebigdigit`
[INFO] [stderr]   --> src/algorithms.rs:56:5
[INFO] [stderr]    |
[INFO] [stderr] 56 |     pub fn to_doublebigdigit(hi: BigDigit, lo: BigDigit) -> DoubleBigDigit {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.10s
[INFO] running `"docker" "inspect" "461805cc8c67d8bbff20c270111ff80a50ef3086afed165ec2eebdb59b577eeb"`
[INFO] running `"docker" "rm" "-f" "461805cc8c67d8bbff20c270111ff80a50ef3086afed165ec2eebdb59b577eeb"`
[INFO] [stdout] 461805cc8c67d8bbff20c270111ff80a50ef3086afed165ec2eebdb59b577eeb
[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/bigint2/0.1.0:/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] a919d5438360d844006089837bae9a06988a6e413ef711f608f563465025b91a
[INFO] running `"docker" "start" "-a" "a919d5438360d844006089837bae9a06988a6e413ef711f608f563465025b91a"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/bigint2-63a76ff6c7b0db9b
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test u256::tests::div ... ok
[INFO] [stdout] test u256::tests::mul ... ok
[INFO] [stderr]    Doc-tests bigint2
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[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] running `"docker" "inspect" "a919d5438360d844006089837bae9a06988a6e413ef711f608f563465025b91a"`
[INFO] running `"docker" "rm" "-f" "a919d5438360d844006089837bae9a06988a6e413ef711f608f563465025b91a"`
[INFO] [stdout] a919d5438360d844006089837bae9a06988a6e413ef711f608f563465025b91a