[INFO] cloning repository https://github.com/tingfeng-key/rust_cpal_learn
[INFO] running `"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"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftingfeng-key%2Frust_cpal_learn'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ec410f4d6e9b8ff7410d9f6f531cc058192aebf7
[INFO] checking tingfeng-key/rust_cpal_learn against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftingfeng-key%2Frust_cpal_learn" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tingfeng-key/rust_cpal_learn on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[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-2/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 `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 75ac5391ce5e28742554e7d1506ca9a0e42f22e301f1482e78b82e55b7f46f2a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "75ac5391ce5e28742554e7d1506ca9a0e42f22e301f1482e78b82e55b7f46f2a"`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]    Compiling cpal v0.10.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling minimp3-sys v0.3.1
[INFO] [stderr]    Compiling alsa-sys v0.1.2
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking backtrace-sys v0.1.31
[INFO] [stderr]     Checking slice-deque v0.2.4
[INFO] [stderr]     Checking backtrace v0.3.37
[INFO] [stderr]    Compiling syn v0.15.44
[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] [stderr] warning: the item `thread` is imported redundantly
[INFO] [stderr]    --> src/main.rs:118:13
[INFO] [stderr]     |
[INFO] [stderr] 2   | use std::thread;
[INFO] [stderr]     |     ----------- the item `thread` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 118 |         use std::thread;
[INFO] [stderr]     |             ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `thread` is imported redundantly
[INFO] [stderr]    --> src/main.rs:118:13
[INFO] [stderr]     |
[INFO] [stderr] 2   | use std::thread;
[INFO] [stderr]     |     ----------- the item `thread` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 118 |         use std::thread;
[INFO] [stderr]     |             ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.58s
[INFO] running `"docker" "inspect" "75ac5391ce5e28742554e7d1506ca9a0e42f22e301f1482e78b82e55b7f46f2a"`
[INFO] running `"docker" "rm" "-f" "75ac5391ce5e28742554e7d1506ca9a0e42f22e301f1482e78b82e55b7f46f2a"`
[INFO] [stdout] 75ac5391ce5e28742554e7d1506ca9a0e42f22e301f1482e78b82e55b7f46f2a