[INFO] updating cached repository ashelleyPurdue/rust_prng
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ashelleyPurdue/rust_prng
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ashelleyPurdue/rust_prng" "work/ex/beta-1.38-1/sources/1.37.0/gh/ashelleyPurdue/rust_prng"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/ashelleyPurdue/rust_prng'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ashelleyPurdue/rust_prng" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ashelleyPurdue/rust_prng"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ashelleyPurdue/rust_prng'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 948fa6b1a85743cb932169b13ec47ea1c21fc390
[INFO] sha for GitHub repo ashelleyPurdue/rust_prng: 948fa6b1a85743cb932169b13ec47ea1c21fc390
[INFO] validating manifest of ashelleyPurdue/rust_prng 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 ashelleyPurdue/rust_prng 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 ashelleyPurdue/rust_prng
[INFO] finished frobbing ashelleyPurdue/rust_prng
[INFO] frobbed toml for ashelleyPurdue/rust_prng written to work/ex/beta-1.38-1/sources/1.37.0/gh/ashelleyPurdue/rust_prng/Cargo.toml
[INFO] started frobbing ashelleyPurdue/rust_prng
[INFO] finished frobbing ashelleyPurdue/rust_prng
[INFO] frobbed toml for ashelleyPurdue/rust_prng written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ashelleyPurdue/rust_prng/Cargo.toml
[INFO] crate ashelleyPurdue/rust_prng already has a lockfile, it will not be regenerated
[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 ashelleyPurdue/rust_prng 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-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/ashelleyPurdue/rust_prng:/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] aefadc67a3196c47c7e4d17ef7cf74a4aeea11786c0aaf44cdb87d8613402da9
[INFO] running `"docker" "start" "-a" "aefadc67a3196c47c7e4d17ef7cf74a4aeea11786c0aaf44cdb87d8613402da9"`
[INFO] [stderr]    Compiling rng_struct v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: field is never used: `seed`
[INFO] [stderr]  --> src/random.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     seed: u64,
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `LARGEST_U64_PRIME`
[INFO] [stderr]  --> src/hashing.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | const LARGEST_U64_PRIME: u64 = 2305843009213693951;        // Equivalent to 61 straight 1's in binary
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `mod_exp_hash`
[INFO] [stderr]   --> src/hashing.rs:18:1
[INFO] [stderr]    |
[INFO] [stderr] 18 | pub fn mod_exp_hash(num: u64) -> u64
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `mod_exp`
[INFO] [stderr]   --> src/hashing.rs:31:1
[INFO] [stderr]    |
[INFO] [stderr] 31 | fn mod_exp(base: u64, exp: u64, modulo: u64) -> u64
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `"docker" "inspect" "aefadc67a3196c47c7e4d17ef7cf74a4aeea11786c0aaf44cdb87d8613402da9"`
[INFO] running `"docker" "rm" "-f" "aefadc67a3196c47c7e4d17ef7cf74a4aeea11786c0aaf44cdb87d8613402da9"`
[INFO] [stdout] aefadc67a3196c47c7e4d17ef7cf74a4aeea11786c0aaf44cdb87d8613402da9
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/ashelleyPurdue/rust_prng:/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] 2402ebca678324b44fd2f932cb7dc7fc73c435a93d8a3c8819d8fac20e3d8929
[INFO] running `"docker" "start" "-a" "2402ebca678324b44fd2f932cb7dc7fc73c435a93d8a3c8819d8fac20e3d8929"`
[INFO] [stderr]    Compiling rng_struct v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: field is never used: `seed`
[INFO] [stderr]  --> src/random.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     seed: u64,
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `LARGEST_U64_PRIME`
[INFO] [stderr]  --> src/hashing.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | const LARGEST_U64_PRIME: u64 = 2305843009213693951;        // Equivalent to 61 straight 1's in binary
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `mod_exp_hash`
[INFO] [stderr]   --> src/hashing.rs:18:1
[INFO] [stderr]    |
[INFO] [stderr] 18 | pub fn mod_exp_hash(num: u64) -> u64
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `mod_exp`
[INFO] [stderr]   --> src/hashing.rs:31:1
[INFO] [stderr]    |
[INFO] [stderr] 31 | fn mod_exp(base: u64, exp: u64, modulo: u64) -> u64
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `"docker" "inspect" "2402ebca678324b44fd2f932cb7dc7fc73c435a93d8a3c8819d8fac20e3d8929"`
[INFO] running `"docker" "rm" "-f" "2402ebca678324b44fd2f932cb7dc7fc73c435a93d8a3c8819d8fac20e3d8929"`
[INFO] [stdout] 2402ebca678324b44fd2f932cb7dc7fc73c435a93d8a3c8819d8fac20e3d8929
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/ashelleyPurdue/rust_prng:/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] be1fd0dd061bf40a2aeef6c483760183606c102e19d017088809a78af5fc9640
[INFO] running `"docker" "start" "-a" "be1fd0dd061bf40a2aeef6c483760183606c102e19d017088809a78af5fc9640"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rng_struct-9618e60a0b1e5cec
[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" "be1fd0dd061bf40a2aeef6c483760183606c102e19d017088809a78af5fc9640"`
[INFO] running `"docker" "rm" "-f" "be1fd0dd061bf40a2aeef6c483760183606c102e19d017088809a78af5fc9640"`
[INFO] [stdout] be1fd0dd061bf40a2aeef6c483760183606c102e19d017088809a78af5fc9640