[INFO] updating cached repository dusty-phillips/rust-rsa
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/dusty-phillips/rust-rsa
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/dusty-phillips/rust-rsa" "work/ex/beta-1.38-1/sources/1.37.0/gh/dusty-phillips/rust-rsa"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/dusty-phillips/rust-rsa'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/dusty-phillips/rust-rsa" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/dusty-phillips/rust-rsa"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/dusty-phillips/rust-rsa'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4e717b77994d8db55a07bd7ebd02a86d7b6d1afa
[INFO] sha for GitHub repo dusty-phillips/rust-rsa: 4e717b77994d8db55a07bd7ebd02a86d7b6d1afa
[INFO] validating manifest of dusty-phillips/rust-rsa 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 dusty-phillips/rust-rsa 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 dusty-phillips/rust-rsa
[INFO] finished frobbing dusty-phillips/rust-rsa
[INFO] frobbed toml for dusty-phillips/rust-rsa written to work/ex/beta-1.38-1/sources/1.37.0/gh/dusty-phillips/rust-rsa/Cargo.toml
[INFO] started frobbing dusty-phillips/rust-rsa
[INFO] finished frobbing dusty-phillips/rust-rsa
[INFO] frobbed toml for dusty-phillips/rust-rsa written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/dusty-phillips/rust-rsa/Cargo.toml
[INFO] crate dusty-phillips/rust-rsa 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 dusty-phillips/rust-rsa 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-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/dusty-phillips/rust-rsa:/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] fd150c2589de935217afba1c8c313040ff7c2ddeb834d0a92f405ae35861fcea
[INFO] running `"docker" "start" "-a" "fd150c2589de935217afba1c8c313040ff7c2ddeb834d0a92f405ae35861fcea"`
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling num-bigint v0.2.0
[INFO] [stderr]    Compiling rsa_rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:53:17
[INFO] [stderr]    |
[INFO] [stderr] 53 |             let mut witness = rng.gen_biguint_range(two, number);
[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]     Finished dev [unoptimized + debuginfo] target(s) in 7.85s
[INFO] running `"docker" "inspect" "fd150c2589de935217afba1c8c313040ff7c2ddeb834d0a92f405ae35861fcea"`
[INFO] running `"docker" "rm" "-f" "fd150c2589de935217afba1c8c313040ff7c2ddeb834d0a92f405ae35861fcea"`
[INFO] [stdout] fd150c2589de935217afba1c8c313040ff7c2ddeb834d0a92f405ae35861fcea
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/dusty-phillips/rust-rsa:/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] 028706e84aed00421a1846c07a1b8e92f87384f5b6018aa917d86ce373464eaa
[INFO] running `"docker" "start" "-a" "028706e84aed00421a1846c07a1b8e92f87384f5b6018aa917d86ce373464eaa"`
[INFO] [stderr]    Compiling rsa_rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:53:17
[INFO] [stderr]    |
[INFO] [stderr] 53 |             let mut witness = rng.gen_biguint_range(two, number);
[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]     Finished dev [unoptimized + debuginfo] target(s) in 1.71s
[INFO] running `"docker" "inspect" "028706e84aed00421a1846c07a1b8e92f87384f5b6018aa917d86ce373464eaa"`
[INFO] running `"docker" "rm" "-f" "028706e84aed00421a1846c07a1b8e92f87384f5b6018aa917d86ce373464eaa"`
[INFO] [stdout] 028706e84aed00421a1846c07a1b8e92f87384f5b6018aa917d86ce373464eaa
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/dusty-phillips/rust-rsa:/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] 7226c91a6b961d9e9af5fa37de9cdcc2b9ab99927f22ee53b5923f716e1e05d3
[INFO] running `"docker" "start" "-a" "7226c91a6b961d9e9af5fa37de9cdcc2b9ab99927f22ee53b5923f716e1e05d3"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rsa_rust-801f90bafcbba780
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test math::tests::modular_inverse ... ok
[INFO] [stdout] test math::tests::large_prime ... ok
[INFO] [stdout] test math::tests::first_primes ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/main-acac45ce58b79fe9
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::rsa_round_trip ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rsa_rust
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - math::mod_inverse (line 73) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "7226c91a6b961d9e9af5fa37de9cdcc2b9ab99927f22ee53b5923f716e1e05d3"`
[INFO] running `"docker" "rm" "-f" "7226c91a6b961d9e9af5fa37de9cdcc2b9ab99927f22ee53b5923f716e1e05d3"`
[INFO] [stdout] 7226c91a6b961d9e9af5fa37de9cdcc2b9ab99927f22ee53b5923f716e1e05d3