[INFO] updating cached repository ThomasHertleif/cluster-heist
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ThomasHertleif/cluster-heist
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ThomasHertleif/cluster-heist" "work/ex/beta-1.38-1/sources/1.37.0/gh/ThomasHertleif/cluster-heist"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/ThomasHertleif/cluster-heist'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ThomasHertleif/cluster-heist" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ThomasHertleif/cluster-heist"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ThomasHertleif/cluster-heist'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3bcf3cb67c37632d70f0628fed38a6ff82e939b8
[INFO] sha for GitHub repo ThomasHertleif/cluster-heist: 3bcf3cb67c37632d70f0628fed38a6ff82e939b8
[INFO] validating manifest of ThomasHertleif/cluster-heist 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 ThomasHertleif/cluster-heist 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 ThomasHertleif/cluster-heist
[INFO] finished frobbing ThomasHertleif/cluster-heist
[INFO] frobbed toml for ThomasHertleif/cluster-heist written to work/ex/beta-1.38-1/sources/1.37.0/gh/ThomasHertleif/cluster-heist/Cargo.toml
[INFO] started frobbing ThomasHertleif/cluster-heist
[INFO] finished frobbing ThomasHertleif/cluster-heist
[INFO] frobbed toml for ThomasHertleif/cluster-heist written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ThomasHertleif/cluster-heist/Cargo.toml
[INFO] crate ThomasHertleif/cluster-heist 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing ThomasHertleif/cluster-heist 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-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/ThomasHertleif/cluster-heist:/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] ea36b84ceeba9b2ad01edeb607976669326f0e9bbe7c4b67ab5e66fb90f5452c
[INFO] running `"docker" "start" "-a" "ea36b84ceeba9b2ad01edeb607976669326f0e9bbe7c4b67ab5e66fb90f5452c"`
[INFO] [stderr]    Compiling serde v1.0.53
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling inotify v0.3.0
[INFO] [stderr]    Compiling net2 v0.2.32
[INFO] [stderr]    Compiling filetime v0.1.15
[INFO] [stderr]    Compiling nix v0.5.1
[INFO] [stderr]    Compiling bytes v0.4.7
[INFO] [stderr]    Compiling crossbeam-epoch v0.4.1
[INFO] [stderr]    Compiling syn v0.13.7
[INFO] [stderr]    Compiling aho-corasick v0.5.3
[INFO] [stderr]    Compiling thread-id v2.0.0
[INFO] [stderr]    Compiling thread_local v0.2.7
[INFO] [stderr]    Compiling miow v0.1.5
[INFO] [stderr]    Compiling crossbeam-deque v0.3.1
[INFO] [stderr]    Compiling regex v0.1.80
[INFO] [stderr]    Compiling http v0.1.5
[INFO] [stderr]    Compiling mio v0.5.1
[INFO] [stderr]    Compiling notify v4.0.3
[INFO] [stderr]    Compiling env_logger v0.3.5
[INFO] [stderr]    Compiling serde_derive v1.0.53
[INFO] [stderr]    Compiling simple-server v0.3.0
[INFO] [stderr]    Compiling serde_json v1.0.17
[INFO] [stderr]    Compiling cluster-heist v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `DirEntry`
[INFO] [stderr]   --> src/main.rs:60:25
[INFO] [stderr]    |
[INFO] [stderr] 60 |     use std::fs::{self, DirEntry};
[INFO] [stderr]    |                         ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:56:5
[INFO] [stderr]    |
[INFO] [stderr] 56 |     t.join();
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 00s
[INFO] running `"docker" "inspect" "ea36b84ceeba9b2ad01edeb607976669326f0e9bbe7c4b67ab5e66fb90f5452c"`
[INFO] running `"docker" "rm" "-f" "ea36b84ceeba9b2ad01edeb607976669326f0e9bbe7c4b67ab5e66fb90f5452c"`
[INFO] [stdout] ea36b84ceeba9b2ad01edeb607976669326f0e9bbe7c4b67ab5e66fb90f5452c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/ThomasHertleif/cluster-heist:/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] 2e0f16da898500d7e2194937579505149e95cbde9682a771fa1c02dd44a83bd4
[INFO] running `"docker" "start" "-a" "2e0f16da898500d7e2194937579505149e95cbde9682a771fa1c02dd44a83bd4"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling cluster-heist v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `DirEntry`
[INFO] [stderr]   --> src/main.rs:60:25
[INFO] [stderr]    |
[INFO] [stderr] 60 |     use std::fs::{self, DirEntry};
[INFO] [stderr]    |                         ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:56:5
[INFO] [stderr]    |
[INFO] [stderr] 56 |     t.join();
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.07s
[INFO] running `"docker" "inspect" "2e0f16da898500d7e2194937579505149e95cbde9682a771fa1c02dd44a83bd4"`
[INFO] running `"docker" "rm" "-f" "2e0f16da898500d7e2194937579505149e95cbde9682a771fa1c02dd44a83bd4"`
[INFO] [stdout] 2e0f16da898500d7e2194937579505149e95cbde9682a771fa1c02dd44a83bd4
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/ThomasHertleif/cluster-heist:/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] 488b14c4a6116b138c3a69618d5b43b2c89e84c616ca996a6ff4c7502e8dcad4
[INFO] running `"docker" "start" "-a" "488b14c4a6116b138c3a69618d5b43b2c89e84c616ca996a6ff4c7502e8dcad4"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/cluster_heist-20ccf3cdfd63217a
[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" "488b14c4a6116b138c3a69618d5b43b2c89e84c616ca996a6ff4c7502e8dcad4"`
[INFO] running `"docker" "rm" "-f" "488b14c4a6116b138c3a69618d5b43b2c89e84c616ca996a6ff4c7502e8dcad4"`
[INFO] [stdout] 488b14c4a6116b138c3a69618d5b43b2c89e84c616ca996a6ff4c7502e8dcad4