[INFO] cloning repository https://github.com/modulitos/async_book
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/modulitos/async_book" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmodulitos%2Fasync_book", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmodulitos%2Fasync_book'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a9f98e52ed4f718fe4814f7a36bcb8741da5328e
[INFO] checking modulitos/async_book against ed77b7b8699e342c2dc842c83cb5fe4025252ee8 for pr-158915-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmodulitos%2Fasync_book" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/modulitos/async_book
[INFO] finished tweaking git repo https://github.com/modulitos/async_book
[INFO] tweaked toml for git repo https://github.com/modulitos/async_book written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/modulitos/async_book on toolchain ed77b7b8699e342c2dc842c83cb5fe4025252ee8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ed77b7b8699e342c2dc842c83cb5fe4025252ee8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/modulitos/async_book already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ed77b7b8699e342c2dc842c83cb5fe4025252ee8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: binary `ch_2_build_executor` should have a kebab-case name
[INFO] [stderr]   |
[INFO] [stderr] 1 | /workspace/builds/worker-5-tc1/source/target/.../ch_2_build_executor
[INFO] [stderr]   |                                                  ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `ch-2-build-executor`, convert the file stem
[INFO] [stderr]   |
[INFO] [stderr] 1 - src/bin/ch_2_build_executor.rs
[INFO] [stderr] 1 + src/bin/ch-2-build-executor.rs
[INFO] [stderr]   |
[INFO] [stderr] warning: binary `ch_3_async_blocks` should have a kebab-case name
[INFO] [stderr]   |
[INFO] [stderr] 1 | /workspace/builds/worker-5-tc1/source/target/.../ch_3_async_blocks
[INFO] [stderr]   |                                                  ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr] help: to change the binary name to `ch-3-async-blocks`, convert the file stem
[INFO] [stderr]   |
[INFO] [stderr] 1 - src/bin/ch_3_async_blocks.rs
[INFO] [stderr] 1 + src/bin/ch-3-async-blocks.rs
[INFO] [stderr]   |
[INFO] [stderr] warning: binary `ch_4_pinning` should have a kebab-case name
[INFO] [stderr]   |
[INFO] [stderr] 1 | /workspace/builds/worker-5-tc1/source/target/.../ch_4_pinning
[INFO] [stderr]   |                                                  ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr] help: to change the binary name to `ch-4-pinning`, convert the file stem
[INFO] [stderr]   |
[INFO] [stderr] 1 - src/bin/ch_4_pinning.rs
[INFO] [stderr] 1 + src/bin/ch-4-pinning.rs
[INFO] [stderr]   |
[INFO] [stderr] warning: binary `ch_6_select` should have a kebab-case name
[INFO] [stderr]   |
[INFO] [stderr] 1 | /workspace/builds/worker-5-tc1/source/target/.../ch_6_select
[INFO] [stderr]   |                                                  ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr] help: to change the binary name to `ch-6-select`, convert the file stem
[INFO] [stderr]   |
[INFO] [stderr] 1 - src/bin/ch_6_select.rs
[INFO] [stderr] 1 + src/bin/ch-6-select.rs
[INFO] [stderr]   |
[INFO] [stderr] warning: binary `race_futures` should have a kebab-case name
[INFO] [stderr]   |
[INFO] [stderr] 1 | /workspace/builds/worker-5-tc1/source/target/.../race_futures
[INFO] [stderr]   |                                                  ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr] help: to change the binary name to `race-futures`, convert the file stem
[INFO] [stderr]   |
[INFO] [stderr] 1 - src/bin/race_futures.rs
[INFO] [stderr] 1 + src/bin/race-futures.rs
[INFO] [stderr]   |
[INFO] [stderr] warning: `async_book` (manifest) generated 5 warnings
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds


overridden task result to prepare-fail:timeout

Caused by:
    0: uncategorized prepare error
    1: no output for 300 seconds