[INFO] updating cached repository strassl/blockchain
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/strassl/blockchain
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/strassl/blockchain" "work/ex/beta-1.38-1/sources/1.37.0/gh/strassl/blockchain"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/strassl/blockchain'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/strassl/blockchain" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/strassl/blockchain"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/strassl/blockchain'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 488351e7bb5d038c1c0f486f64300ae1970eea53
[INFO] sha for GitHub repo strassl/blockchain: 488351e7bb5d038c1c0f486f64300ae1970eea53
[INFO] validating manifest of strassl/blockchain 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 strassl/blockchain 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 strassl/blockchain
[INFO] finished frobbing strassl/blockchain
[INFO] frobbed toml for strassl/blockchain written to work/ex/beta-1.38-1/sources/1.37.0/gh/strassl/blockchain/Cargo.toml
[INFO] started frobbing strassl/blockchain
[INFO] finished frobbing strassl/blockchain
[INFO] frobbed toml for strassl/blockchain written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/strassl/blockchain/Cargo.toml
[INFO] crate strassl/blockchain 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 strassl/blockchain 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-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/strassl/blockchain:/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] e73365af674936e721fb979ed35828aa7747bfc492f786d673e4cf0adf94d37f
[INFO] running `"docker" "start" "-a" "e73365af674936e721fb979ed35828aa7747bfc492f786d673e4cf0adf94d37f"`
[INFO] [stderr]    Compiling gcc v0.3.49
[INFO] [stderr]    Compiling thread-id v3.1.0
[INFO] [stderr]    Compiling memchr v1.0.1
[INFO] [stderr]    Compiling time v0.1.37
[INFO] [stderr]    Compiling thread_local v0.3.3
[INFO] [stderr]    Compiling aho-corasick v0.6.3
[INFO] [stderr]    Compiling regex v0.2.2
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]    Compiling env_logger v0.4.3
[INFO] [stderr]    Compiling blockchain v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `serialize`
[INFO] [stderr]  --> src/chain/serialization.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn serialize(chain: &Chain) -> Vec<u8> {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `deserialize`
[INFO] [stderr]   --> src/chain/serialization.rs:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub fn deserialize(data: &Vec<u8>) -> Result<Chain, String> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `deserialize`
[INFO] [stderr]   --> src/main.rs:10:39
[INFO] [stderr]    |
[INFO] [stderr] 10 | use chain::serialization::{serialize, deserialize};
[INFO] [stderr]    |                                       ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `deserialize`
[INFO] [stderr]   --> src/chain/serialization.rs:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub fn deserialize(data: &Vec<u8>) -> Result<Chain, String> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.74s
[INFO] running `"docker" "inspect" "e73365af674936e721fb979ed35828aa7747bfc492f786d673e4cf0adf94d37f"`
[INFO] running `"docker" "rm" "-f" "e73365af674936e721fb979ed35828aa7747bfc492f786d673e4cf0adf94d37f"`
[INFO] [stdout] e73365af674936e721fb979ed35828aa7747bfc492f786d673e4cf0adf94d37f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/strassl/blockchain:/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] 116f33e220eef73a7c09e63f2fdf5475c9254d894f32c599db2c7b27e9fac762
[INFO] running `"docker" "start" "-a" "116f33e220eef73a7c09e63f2fdf5475c9254d894f32c599db2c7b27e9fac762"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling blockchain v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `deserialize`
[INFO] [stderr]   --> src/main.rs:10:39
[INFO] [stderr]    |
[INFO] [stderr] 10 | use chain::serialization::{serialize, deserialize};
[INFO] [stderr]    |                                       ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.54s
[INFO] running `"docker" "inspect" "116f33e220eef73a7c09e63f2fdf5475c9254d894f32c599db2c7b27e9fac762"`
[INFO] running `"docker" "rm" "-f" "116f33e220eef73a7c09e63f2fdf5475c9254d894f32c599db2c7b27e9fac762"`
[INFO] [stdout] 116f33e220eef73a7c09e63f2fdf5475c9254d894f32c599db2c7b27e9fac762
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/strassl/blockchain:/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] ae3ac61bb19ec8e6135a920b86117aca4a4df641f837ddafec80ab15331a23a0
[INFO] running `"docker" "start" "-a" "ae3ac61bb19ec8e6135a920b86117aca4a4df641f837ddafec80ab15331a23a0"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/blockchain-0210f4841fed0e29
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test chain::serialization::test::serialize_deserialize_works ... ok
[INFO] [stdout] test chain::test::verify_works ... ok
[INFO] [stdout] test chain::test::init_works ... ok
[INFO] [stdout] test chain::test::push_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/blockchain-14521827b72d6746
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test chain::test::init_works ... ok
[INFO] [stdout] test chain::serialization::test::serialize_deserialize_works ... ok
[INFO] [stdout] test chain::test::push_works ... ok
[INFO] [stdout] test chain::test::verify_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests blockchain
[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" "ae3ac61bb19ec8e6135a920b86117aca4a4df641f837ddafec80ab15331a23a0"`
[INFO] running `"docker" "rm" "-f" "ae3ac61bb19ec8e6135a920b86117aca4a4df641f837ddafec80ab15331a23a0"`
[INFO] [stdout] ae3ac61bb19ec8e6135a920b86117aca4a4df641f837ddafec80ab15331a23a0