[INFO] updating cached repository Biacco42/rusty_blockchain_study
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Biacco42/rusty_blockchain_study
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Biacco42/rusty_blockchain_study" "work/ex/beta-1.37-6/sources/1.36.0/gh/Biacco42/rusty_blockchain_study"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/Biacco42/rusty_blockchain_study'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Biacco42/rusty_blockchain_study" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Biacco42/rusty_blockchain_study"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Biacco42/rusty_blockchain_study'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 06407706ba244043b8ec4030636504fd6894bbb1
[INFO] sha for GitHub repo Biacco42/rusty_blockchain_study: 06407706ba244043b8ec4030636504fd6894bbb1
[INFO] validating manifest of Biacco42/rusty_blockchain_study 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 Biacco42/rusty_blockchain_study 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 Biacco42/rusty_blockchain_study
[INFO] finished frobbing Biacco42/rusty_blockchain_study
[INFO] frobbed toml for Biacco42/rusty_blockchain_study written to work/ex/beta-1.37-6/sources/1.36.0/gh/Biacco42/rusty_blockchain_study/Cargo.toml
[INFO] started frobbing Biacco42/rusty_blockchain_study
[INFO] finished frobbing Biacco42/rusty_blockchain_study
[INFO] frobbed toml for Biacco42/rusty_blockchain_study written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Biacco42/rusty_blockchain_study/Cargo.toml
[INFO] crate Biacco42/rusty_blockchain_study already has a lockfile, it will not be regenerated
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing Biacco42/rusty_blockchain_study against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/Biacco42/rusty_blockchain_study:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 6167984c9f8870ccfd61a1046f722ccec3157101fef1c113f72f50a2ff1fad77
[INFO] running `"docker" "start" "-a" "6167984c9f8870ccfd61a1046f722ccec3157101fef1c113f72f50a2ff1fad77"`
[INFO] [stderr]    Compiling rusty_blockchain_study v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `hello`
[INFO] [stderr]  --> src/node/mod.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn hello() -> 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 1.11s
[INFO] running `"docker" "inspect" "6167984c9f8870ccfd61a1046f722ccec3157101fef1c113f72f50a2ff1fad77"`
[INFO] running `"docker" "rm" "-f" "6167984c9f8870ccfd61a1046f722ccec3157101fef1c113f72f50a2ff1fad77"`
[INFO] [stdout] 6167984c9f8870ccfd61a1046f722ccec3157101fef1c113f72f50a2ff1fad77
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/Biacco42/rusty_blockchain_study:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] d2c9308fb13cc140edb16605e54193ea2c95348285019b90eb3063a549acef9d
[INFO] running `"docker" "start" "-a" "d2c9308fb13cc140edb16605e54193ea2c95348285019b90eb3063a549acef9d"`
[INFO] [stderr]    Compiling rusty_blockchain_study v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `hello`
[INFO] [stderr]  --> src/node/mod.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn hello() -> 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 0.75s
[INFO] running `"docker" "inspect" "d2c9308fb13cc140edb16605e54193ea2c95348285019b90eb3063a549acef9d"`
[INFO] running `"docker" "rm" "-f" "d2c9308fb13cc140edb16605e54193ea2c95348285019b90eb3063a549acef9d"`
[INFO] [stdout] d2c9308fb13cc140edb16605e54193ea2c95348285019b90eb3063a549acef9d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/Biacco42/rusty_blockchain_study:/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 6cca7d99b7da9c28687824680f7068b027655c8d47aee3354a78918bfa71bf26
[INFO] running `"docker" "start" "-a" "6cca7d99b7da9c28687824680f7068b027655c8d47aee3354a78918bfa71bf26"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rusty_blockchain_study-9d49f9e5d45d9c01
[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] [stderr]      Running /opt/crater/target/debug/deps/rusty_blockchain_study-aad7f99d1a01e56e
[INFO] [stderr]    Doc-tests rusty_blockchain_study
[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] [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" "6cca7d99b7da9c28687824680f7068b027655c8d47aee3354a78918bfa71bf26"`
[INFO] running `"docker" "rm" "-f" "6cca7d99b7da9c28687824680f7068b027655c8d47aee3354a78918bfa71bf26"`
[INFO] [stdout] 6cca7d99b7da9c28687824680f7068b027655c8d47aee3354a78918bfa71bf26