[INFO] fetching crate iota-signing 0.2.0...
[INFO] extracting crate iota-signing 0.2.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/iota-signing/0.2.0
[INFO] extracting crate iota-signing 0.2.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/iota-signing/0.2.0
[INFO] validating manifest of iota-signing-0.2.0 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of iota-signing-0.2.0 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing iota-signing-0.2.0
[INFO] finished frobbing iota-signing-0.2.0
[INFO] frobbed toml for iota-signing-0.2.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/iota-signing/0.2.0/Cargo.toml
[INFO] started frobbing iota-signing-0.2.0
[INFO] finished frobbing iota-signing-0.2.0
[INFO] frobbed toml for iota-signing-0.2.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/iota-signing/0.2.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing iota-signing-0.2.0 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/iota-signing/0.2.0:/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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] e572e02616f268d3eeba2176d03a5af4d8f2f61135f3ccaa9da2ee849ca117d9
[INFO] running `"docker" "start" "-a" "e572e02616f268d3eeba2176d03a5af4d8f2f61135f3ccaa9da2ee849ca117d9"`
[INFO] [stderr]    Compiling iota-constants v0.2.0
[INFO] [stderr]    Compiling iota-conversion v0.2.0
[INFO] [stderr]    Compiling iota-crypto v0.2.0
[INFO] [stderr]    Compiling iota-model v0.2.0
[INFO] [stderr]    Compiling iota-validation v0.2.0
[INFO] [stderr]    Compiling iota-signing v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: constant item is never used: `HMAC_ROUNDS`
[INFO] [stderr]  --> hmac.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | const HMAC_ROUNDS: usize = 27;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.08s
[INFO] running `"docker" "inspect" "e572e02616f268d3eeba2176d03a5af4d8f2f61135f3ccaa9da2ee849ca117d9"`
[INFO] running `"docker" "rm" "-f" "e572e02616f268d3eeba2176d03a5af4d8f2f61135f3ccaa9da2ee849ca117d9"`
[INFO] [stdout] e572e02616f268d3eeba2176d03a5af4d8f2f61135f3ccaa9da2ee849ca117d9
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/iota-signing/0.2.0:/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" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] c30d1795189df78b2e3d081ec31bb1e764c601f5d7aa74cadc9d53cb47c75445
[INFO] running `"docker" "start" "-a" "c30d1795189df78b2e3d081ec31bb1e764c601f5d7aa74cadc9d53cb47c75445"`
[INFO] [stderr]    Compiling iota-signing v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: constant item is never used: `HMAC_ROUNDS`
[INFO] [stderr]  --> hmac.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | const HMAC_ROUNDS: usize = 27;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.36s
[INFO] running `"docker" "inspect" "c30d1795189df78b2e3d081ec31bb1e764c601f5d7aa74cadc9d53cb47c75445"`
[INFO] running `"docker" "rm" "-f" "c30d1795189df78b2e3d081ec31bb1e764c601f5d7aa74cadc9d53cb47c75445"`
[INFO] [stdout] c30d1795189df78b2e3d081ec31bb1e764c601f5d7aa74cadc9d53cb47c75445
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/iota-signing/0.2.0:/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" "+beta-2019-07-23" "test" "--frozen"`
[INFO] [stdout] df0622c580efcd4664931510ca1f569795bf906e79239e8f9aa0cb282ed8eaaa
[INFO] running `"docker" "start" "-a" "df0622c580efcd4664931510ca1f569795bf906e79239e8f9aa0cb282ed8eaaa"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.72s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/iota_signing-d93c6ecba318a44e
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test checksum::tests::test_add_checksum ... ok
[INFO] [stdout] test checksum::tests::test_remove_checksum ... ok
[INFO] [stdout] test checksum::tests::test_is_valid_checksum ... ok
[INFO] [stdout] test tests::test_key_length ... ok
[INFO] [stdout] test tests::test_signing ... ok
[INFO] [stdout] test tests::test_verifying ... ok
[INFO] [stdout] test tests::test_long_seed_key_generation ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests iota_signing
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test hmac.rs - hmac::HMAC (line 11) ... 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" "df0622c580efcd4664931510ca1f569795bf906e79239e8f9aa0cb282ed8eaaa"`
[INFO] running `"docker" "rm" "-f" "df0622c580efcd4664931510ca1f569795bf906e79239e8f9aa0cb282ed8eaaa"`
[INFO] [stdout] df0622c580efcd4664931510ca1f569795bf906e79239e8f9aa0cb282ed8eaaa