[INFO] fetching crate tm1637-gpio-driver 2.0.2...
[INFO] testing tm1637-gpio-driver-2.0.2 against beta-2020-10-09 for beta-1.48-1
[INFO] extracting crate tm1637-gpio-driver 2.0.2 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate tm1637-gpio-driver 2.0.2 on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tm1637-gpio-driver 2.0.2
[INFO] finished tweaking crates.io crate tm1637-gpio-driver 2.0.2
[INFO] tweaked toml for crates.io crate tm1637-gpio-driver 2.0.2 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded gpio-cdev v0.3.0
[INFO] [stderr]   Downloaded gpio v0.4.1
[INFO] [stderr]   Downloaded wiringpi v0.2.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a8b6c1b6061ec947e4cf5c1fb9e0415e211dcfcb7da864664dad31123297b545
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a8b6c1b6061ec947e4cf5c1fb9e0415e211dcfcb7da864664dad31123297b545", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a8b6c1b6061ec947e4cf5c1fb9e0415e211dcfcb7da864664dad31123297b545", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8b6c1b6061ec947e4cf5c1fb9e0415e211dcfcb7da864664dad31123297b545", kill_on_drop: false }`
[INFO] [stdout] a8b6c1b6061ec947e4cf5c1fb9e0415e211dcfcb7da864664dad31123297b545
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] af7f730081bc98a520fe9ceedf0b6a44ce4bb113ada11d455d8ed3538b745e43
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "af7f730081bc98a520fe9ceedf0b6a44ce4bb113ada11d455d8ed3538b745e43", kill_on_drop: false }`
[INFO] [stderr]    Compiling gpio-cdev v0.3.0
[INFO] [stderr]    Compiling tm1637-gpio-driver v2.0.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.90s
[INFO] running `Command { std: "docker" "inspect" "af7f730081bc98a520fe9ceedf0b6a44ce4bb113ada11d455d8ed3538b745e43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af7f730081bc98a520fe9ceedf0b6a44ce4bb113ada11d455d8ed3538b745e43", kill_on_drop: false }`
[INFO] [stdout] af7f730081bc98a520fe9ceedf0b6a44ce4bb113ada11d455d8ed3538b745e43
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] db38b05f0b03387bc38a1cb6091200ce732ceb3a63a79365680ee2d5d1f916ac
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "db38b05f0b03387bc38a1cb6091200ce732ceb3a63a79365680ee2d5d1f916ac", kill_on_drop: false }`
[INFO] [stderr]    Compiling tm1637-gpio-driver v2.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::*`
[INFO] [stdout]   --> src/gpio_api/dummy/mod.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     use crate::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/gpio_api/dummy/mod.rs:32:13
[INFO] [stdout]    |
[INFO] [stdout] 32 |         let mut f = setup_dummy();
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/gpio_api/dummy/mod.rs:32:13
[INFO] [stdout]    |
[INFO] [stdout] 32 |         let mut f = setup_dummy();
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.67s
[INFO] running `Command { std: "docker" "inspect" "db38b05f0b03387bc38a1cb6091200ce732ceb3a63a79365680ee2d5d1f916ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db38b05f0b03387bc38a1cb6091200ce732ceb3a63a79365680ee2d5d1f916ac", kill_on_drop: false }`
[INFO] [stdout] db38b05f0b03387bc38a1cb6091200ce732ceb3a63a79365680ee2d5d1f916ac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3653e0b7e1689edc1882b29afe4aa3f5db16195ee569cf7e8271d905b81a41d3
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3653e0b7e1689edc1882b29afe4aa3f5db16195ee569cf7e8271d905b81a41d3", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `crate::*`
[INFO] [stderr]   --> src/gpio_api/dummy/mod.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 |     use crate::*;
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> src/gpio_api/dummy/mod.rs:32:13
[INFO] [stderr]    |
[INFO] [stderr] 32 |         let mut f = setup_dummy();
[INFO] [stderr]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/gpio_api/dummy/mod.rs:32:13
[INFO] [stderr]    |
[INFO] [stderr] 32 |         let mut f = setup_dummy();
[INFO] [stderr]    |             ----^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/tm1637_gpio_driver-d1bea738136e10c3
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stderr]    Doc-tests tm1637-gpio-driver
[INFO] [stdout] test gpio_api::dummy::tests::test ... ok
[INFO] [stdout] test tests::test_encode_number ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 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 `Command { std: "docker" "inspect" "3653e0b7e1689edc1882b29afe4aa3f5db16195ee569cf7e8271d905b81a41d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3653e0b7e1689edc1882b29afe4aa3f5db16195ee569cf7e8271d905b81a41d3", kill_on_drop: false }`
[INFO] [stdout] 3653e0b7e1689edc1882b29afe4aa3f5db16195ee569cf7e8271d905b81a41d3
