[INFO] cloning repository https://github.com/tingfeng-key/rust_cpal_learn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tingfeng-key/rust_cpal_learn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftingfeng-key%2Frust_cpal_learn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftingfeng-key%2Frust_cpal_learn'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ec410f4d6e9b8ff7410d9f6f531cc058192aebf7
[INFO] checking tingfeng-key/rust_cpal_learn against try#075992eda207e1647b699c8c8ada67b32ce7b115 for pr-77271
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftingfeng-key%2Frust_cpal_learn" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tingfeng-key/rust_cpal_learn on toolchain 075992eda207e1647b699c8c8ada67b32ce7b115
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+075992eda207e1647b699c8c8ada67b32ce7b115" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tingfeng-key/rust_cpal_learn
[INFO] finished tweaking git repo https://github.com/tingfeng-key/rust_cpal_learn
[INFO] tweaked toml for git repo https://github.com/tingfeng-key/rust_cpal_learn written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/tingfeng-key/rust_cpal_learn already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+075992eda207e1647b699c8c8ada67b32ce7b115" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+075992eda207e1647b699c8c8ada67b32ce7b115" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 04d94c12a7b95f771faf8267cbb7f7f590cbd76fab4fbb60fe1ab8d0a8888775
[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" "04d94c12a7b95f771faf8267cbb7f7f590cbd76fab4fbb60fe1ab8d0a8888775", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "04d94c12a7b95f771faf8267cbb7f7f590cbd76fab4fbb60fe1ab8d0a8888775", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04d94c12a7b95f771faf8267cbb7f7f590cbd76fab4fbb60fe1ab8d0a8888775", kill_on_drop: false }`
[INFO] [stdout] 04d94c12a7b95f771faf8267cbb7f7f590cbd76fab4fbb60fe1ab8d0a8888775
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=forbid" "-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" "+075992eda207e1647b699c8c8ada67b32ce7b115" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1ababa23ac4e169f97c3b138f1a48d120b6da3c1ad5c043fddb2c54debf03742
[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" "1ababa23ac4e169f97c3b138f1a48d120b6da3c1ad5c043fddb2c54debf03742", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling cpal v0.10.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]    Compiling minimp3-sys v0.3.1
[INFO] [stderr]    Compiling alsa-sys v0.1.2
[INFO] [stderr]     Checking slice-deque v0.2.4
[INFO] [stderr]     Checking backtrace v0.3.37
[INFO] [stderr]     Checking minimp3 v0.3.3
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking cpal v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `thread` is imported redundantly
[INFO] [stdout]    --> src/main.rs:118:13
[INFO] [stdout]     |
[INFO] [stdout] 2   | use std::thread;
[INFO] [stdout]     |     ----------- the item `thread` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 118 |         use std::thread;
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `thread` is imported redundantly
[INFO] [stdout]    --> src/main.rs:118:13
[INFO] [stdout]     |
[INFO] [stdout] 2   | use std::thread;
[INFO] [stdout]     |     ----------- the item `thread` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 118 |         use std::thread;
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.47s
[INFO] running `Command { std: "docker" "inspect" "1ababa23ac4e169f97c3b138f1a48d120b6da3c1ad5c043fddb2c54debf03742", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ababa23ac4e169f97c3b138f1a48d120b6da3c1ad5c043fddb2c54debf03742", kill_on_drop: false }`
[INFO] [stdout] 1ababa23ac4e169f97c3b138f1a48d120b6da3c1ad5c043fddb2c54debf03742