[INFO] updating cached repository tehroot/gpiorust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/tehroot/gpiorust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/tehroot/gpiorust" "work/ex/beta-1.38-1/sources/1.37.0/gh/tehroot/gpiorust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/tehroot/gpiorust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/tehroot/gpiorust" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/tehroot/gpiorust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/tehroot/gpiorust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 18cefba09e9c958be9f5013130f148031a52779d
[INFO] sha for GitHub repo tehroot/gpiorust: 18cefba09e9c958be9f5013130f148031a52779d
[INFO] validating manifest of tehroot/gpiorust 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 tehroot/gpiorust 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 tehroot/gpiorust
[INFO] finished frobbing tehroot/gpiorust
[INFO] frobbed toml for tehroot/gpiorust written to work/ex/beta-1.38-1/sources/1.37.0/gh/tehroot/gpiorust/Cargo.toml
[INFO] started frobbing tehroot/gpiorust
[INFO] finished frobbing tehroot/gpiorust
[INFO] frobbed toml for tehroot/gpiorust written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/tehroot/gpiorust/Cargo.toml
[INFO] crate tehroot/gpiorust 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 tehroot/gpiorust 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/tehroot/gpiorust:/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] 0763c10fef1e44f73805061377b67115cd78a41c0ba192a1f132a54e7efecbe6
[INFO] running `"docker" "start" "-a" "0763c10fef1e44f73805061377b67115cd78a41c0ba192a1f132a54e7efecbe6"`
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling nix v0.6.0
[INFO] [stderr]    Compiling thread-id v2.0.0
[INFO] [stderr]    Compiling thread_local v0.2.7
[INFO] [stderr]    Compiling aho-corasick v0.5.3
[INFO] [stderr]    Compiling regex v0.1.80
[INFO] [stderr]    Compiling sysfs_gpio v0.5.1
[INFO] [stderr]    Compiling test v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]   --> src/main.rs:26:19
[INFO] [stderr]    |
[INFO] [stderr] 26 |             if let Some(value) = poller.poll(1000)? {
[INFO] [stderr]    |                         ^^^^^ help: consider prefixing with an underscore: `_value`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.99s
[INFO] running `"docker" "inspect" "0763c10fef1e44f73805061377b67115cd78a41c0ba192a1f132a54e7efecbe6"`
[INFO] running `"docker" "rm" "-f" "0763c10fef1e44f73805061377b67115cd78a41c0ba192a1f132a54e7efecbe6"`
[INFO] [stdout] 0763c10fef1e44f73805061377b67115cd78a41c0ba192a1f132a54e7efecbe6
[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/tehroot/gpiorust:/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] 4a4d9c34b200e05fd33d6f33127f7555e310e2fc32a9b67af1039fc6560ec3b3
[INFO] running `"docker" "start" "-a" "4a4d9c34b200e05fd33d6f33127f7555e310e2fc32a9b67af1039fc6560ec3b3"`
[INFO] [stderr]    Compiling test v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]   --> src/main.rs:26:19
[INFO] [stderr]    |
[INFO] [stderr] 26 |             if let Some(value) = poller.poll(1000)? {
[INFO] [stderr]    |                         ^^^^^ help: consider prefixing with an underscore: `_value`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.73s
[INFO] running `"docker" "inspect" "4a4d9c34b200e05fd33d6f33127f7555e310e2fc32a9b67af1039fc6560ec3b3"`
[INFO] running `"docker" "rm" "-f" "4a4d9c34b200e05fd33d6f33127f7555e310e2fc32a9b67af1039fc6560ec3b3"`
[INFO] [stdout] 4a4d9c34b200e05fd33d6f33127f7555e310e2fc32a9b67af1039fc6560ec3b3
[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/tehroot/gpiorust:/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] ec0154d2e3284d107449696f4978148035ff8845dbed0beef902cc0bca5aa428
[INFO] running `"docker" "start" "-a" "ec0154d2e3284d107449696f4978148035ff8845dbed0beef902cc0bca5aa428"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/main-cc671675cd74f87d
[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" "ec0154d2e3284d107449696f4978148035ff8845dbed0beef902cc0bca5aa428"`
[INFO] running `"docker" "rm" "-f" "ec0154d2e3284d107449696f4978148035ff8845dbed0beef902cc0bca5aa428"`
[INFO] [stdout] ec0154d2e3284d107449696f4978148035ff8845dbed0beef902cc0bca5aa428