[INFO] updating cached repository hanskorg/snowflake-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/hanskorg/snowflake-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/hanskorg/snowflake-rust" "work/ex/beta-1.38-1/sources/1.37.0/gh/hanskorg/snowflake-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/hanskorg/snowflake-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/hanskorg/snowflake-rust" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/hanskorg/snowflake-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/hanskorg/snowflake-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9f228f670f8b71299aeaee5b5f38b662c95ed266
[INFO] sha for GitHub repo hanskorg/snowflake-rust: 9f228f670f8b71299aeaee5b5f38b662c95ed266
[INFO] validating manifest of hanskorg/snowflake-rust 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 hanskorg/snowflake-rust 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 hanskorg/snowflake-rust
[INFO] finished frobbing hanskorg/snowflake-rust
[INFO] frobbed toml for hanskorg/snowflake-rust written to work/ex/beta-1.38-1/sources/1.37.0/gh/hanskorg/snowflake-rust/Cargo.toml
[INFO] started frobbing hanskorg/snowflake-rust
[INFO] finished frobbing hanskorg/snowflake-rust
[INFO] frobbed toml for hanskorg/snowflake-rust written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/hanskorg/snowflake-rust/Cargo.toml
[INFO] crate hanskorg/snowflake-rust 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 hanskorg/snowflake-rust against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/hanskorg/snowflake-rust:/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-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 0f47eca76c9bd1e54182df3cbef13d1e8bbe505f4fa1780764856cc32b303b9b
[INFO] running `"docker" "start" "-a" "0f47eca76c9bd1e54182df3cbef13d1e8bbe505f4fa1780764856cc32b303b9b"`
[INFO] [stderr]    Compiling snowflake-multi-threaded v0.1.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `"docker" "inspect" "0f47eca76c9bd1e54182df3cbef13d1e8bbe505f4fa1780764856cc32b303b9b"`
[INFO] running `"docker" "rm" "-f" "0f47eca76c9bd1e54182df3cbef13d1e8bbe505f4fa1780764856cc32b303b9b"`
[INFO] [stdout] 0f47eca76c9bd1e54182df3cbef13d1e8bbe505f4fa1780764856cc32b303b9b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/hanskorg/snowflake-rust:/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-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] f1085e3a53d97afe9347a1a16f7eb3130d4bd2a5d7ce2623dd448e1ecfd2521e
[INFO] running `"docker" "start" "-a" "f1085e3a53d97afe9347a1a16f7eb3130d4bd2a5d7ce2623dd448e1ecfd2521e"`
[INFO] [stderr]    Compiling snowflake-multi-threaded v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `new_id`
[INFO] [stderr]    --> src/lib.rs:159:25
[INFO] [stderr]     |
[INFO] [stderr] 159 |                     let new_id = t.generate_id().unwrap();
[INFO] [stderr]     |                         ^^^^^^ help: consider prefixing with an underscore: `_new_id`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.62s
[INFO] running `"docker" "inspect" "f1085e3a53d97afe9347a1a16f7eb3130d4bd2a5d7ce2623dd448e1ecfd2521e"`
[INFO] running `"docker" "rm" "-f" "f1085e3a53d97afe9347a1a16f7eb3130d4bd2a5d7ce2623dd448e1ecfd2521e"`
[INFO] [stdout] f1085e3a53d97afe9347a1a16f7eb3130d4bd2a5d7ce2623dd448e1ecfd2521e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/hanskorg/snowflake-rust:/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-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 1eb7cf33e8f903eddcb31edcd717e1b4c50fd7f9f5d637895ee928296c11f2a7
[INFO] running `"docker" "start" "-a" "1eb7cf33e8f903eddcb31edcd717e1b4c50fd7f9f5d637895ee928296c11f2a7"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/snowflake_multi_threaded-ee90821f60dd6924
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test::loop_test ... ok
[INFO] [stdout] test test::multi_thread ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests snowflake-multi-threaded
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/lib.rs -  (line 16) ... ok
[INFO] [stdout] test src/lib.rs - SnowFlakeId::new (line 58) ... ok
[INFO] [stdout] test src/lib.rs - SnowFlakeId::generate_id (line 90) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "1eb7cf33e8f903eddcb31edcd717e1b4c50fd7f9f5d637895ee928296c11f2a7"`
[INFO] running `"docker" "rm" "-f" "1eb7cf33e8f903eddcb31edcd717e1b4c50fd7f9f5d637895ee928296c11f2a7"`
[INFO] [stdout] 1eb7cf33e8f903eddcb31edcd717e1b4c50fd7f9f5d637895ee928296c11f2a7