[INFO] cloning repository https://github.com/sondrelg/rust-the-book
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sondrelg/rust-the-book" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsondrelg%2Frust-the-book", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsondrelg%2Frust-the-book'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 77e08c3bf80cf445f8d2adb713da694f1a7edece
[INFO] checking sondrelg/rust-the-book against master#9c8a2694fadf3900c4d7880f6357cee60e9aa39b for pr-117589
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsondrelg%2Frust-the-book" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sondrelg/rust-the-book on toolchain 9c8a2694fadf3900c4d7880f6357cee60e9aa39b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9c8a2694fadf3900c4d7880f6357cee60e9aa39b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sondrelg/rust-the-book
[INFO] finished tweaking git repo https://github.com/sondrelg/rust-the-book
[INFO] tweaked toml for git repo https://github.com/sondrelg/rust-the-book written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/sondrelg/rust-the-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" "+9c8a2694fadf3900c4d7880f6357cee60e9aa39b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking sondrelg/rust-the-book against try#1e981f329e2ae73beb121ad9b30e8013bc4ead78 for pr-117589
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsondrelg%2Frust-the-book" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sondrelg/rust-the-book on toolchain 1e981f329e2ae73beb121ad9b30e8013bc4ead78
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1e981f329e2ae73beb121ad9b30e8013bc4ead78" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sondrelg/rust-the-book
[INFO] finished tweaking git repo https://github.com/sondrelg/rust-the-book
[INFO] tweaked toml for git repo https://github.com/sondrelg/rust-the-book written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/sondrelg/rust-the-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" "+1e981f329e2ae73beb121ad9b30e8013bc4ead78" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking sondrelg/rust-the-book against try#1e981f329e2ae73beb121ad9b30e8013bc4ead78 for pr-117589
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsondrelg%2Frust-the-book" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sondrelg/rust-the-book on toolchain 1e981f329e2ae73beb121ad9b30e8013bc4ead78
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1e981f329e2ae73beb121ad9b30e8013bc4ead78" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sondrelg/rust-the-book
[INFO] finished tweaking git repo https://github.com/sondrelg/rust-the-book
[INFO] tweaked toml for git repo https://github.com/sondrelg/rust-the-book written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/sondrelg/rust-the-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" "+1e981f329e2ae73beb121ad9b30e8013bc4ead78" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libc v0.2.64
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0c7e0e8312ad82a1bed3696438480b7da990d348377d3754e1cd95b06a8a36c7" "/opt/rustwide/cargo-home/bin/cargo" "+1e981f329e2ae73beb121ad9b30e8013bc4ead78" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a90d548baef960fbaa00de2c23a64150dd641c0bc9f39b466db41d37348a8f13
[INFO] running `Command { std: "docker" "start" "-a" "a90d548baef960fbaa00de2c23a64150dd641c0bc9f39b466db41d37348a8f13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a90d548baef960fbaa00de2c23a64150dd641c0bc9f39b466db41d37348a8f13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a90d548baef960fbaa00de2c23a64150dd641c0bc9f39b466db41d37348a8f13", kill_on_drop: false }`
[INFO] [stdout] a90d548baef960fbaa00de2c23a64150dd641c0bc9f39b466db41d37348a8f13
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0c7e0e8312ad82a1bed3696438480b7da990d348377d3754e1cd95b06a8a36c7" "/opt/rustwide/cargo-home/bin/cargo" "+1e981f329e2ae73beb121ad9b30e8013bc4ead78" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aa2c5e0c403245d4cc5da817825e3e08fd126ebcb39766d9ebe0d15fad6b37dd
[INFO] running `Command { std: "docker" "start" "-a" "aa2c5e0c403245d4cc5da817825e3e08fd126ebcb39766d9ebe0d15fad6b37dd", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.64
[INFO] [stderr]    Compiling getrandom v0.1.12
[INFO] [stderr]     Checking ppv-lite86 v0.2.5
[INFO] [stderr]     Checking c2-chacha v0.2.2
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking thebook v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.09s
[INFO] running `Command { std: "docker" "inspect" "aa2c5e0c403245d4cc5da817825e3e08fd126ebcb39766d9ebe0d15fad6b37dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa2c5e0c403245d4cc5da817825e3e08fd126ebcb39766d9ebe0d15fad6b37dd", kill_on_drop: false }`
[INFO] [stdout] aa2c5e0c403245d4cc5da817825e3e08fd126ebcb39766d9ebe0d15fad6b37dd