[INFO] cloning repository https://github.com/bdav87/rustbook-concurrency
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bdav87/rustbook-concurrency" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbdav87%2Frustbook-concurrency", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbdav87%2Frustbook-concurrency'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 677eb3468c9095355ec644b4ab07d8ba0428efe2
[INFO] checking bdav87/rustbook-concurrency against master#4c5f6e6277b89e47d73a192078697f7a5f3dc0ac for pr-97086
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbdav87%2Frustbook-concurrency" "/workspace/builds/worker-79/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-79/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bdav87/rustbook-concurrency on toolchain 4c5f6e6277b89e47d73a192078697f7a5f3dc0ac
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4c5f6e6277b89e47d73a192078697f7a5f3dc0ac" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bdav87/rustbook-concurrency
[INFO] finished tweaking git repo https://github.com/bdav87/rustbook-concurrency
[INFO] tweaked toml for git repo https://github.com/bdav87/rustbook-concurrency written to /workspace/builds/worker-79/source/Cargo.toml
[INFO] crate git repo https://github.com/bdav87/rustbook-concurrency already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4c5f6e6277b89e47d73a192078697f7a5f3dc0ac" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+4c5f6e6277b89e47d73a192078697f7a5f3dc0ac" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b31022daac7f0aae023a449f1f5628ef302da9f4cba6207f3c5c3879c98b825e
[INFO] running `Command { std: "docker" "start" "-a" "b31022daac7f0aae023a449f1f5628ef302da9f4cba6207f3c5c3879c98b825e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b31022daac7f0aae023a449f1f5628ef302da9f4cba6207f3c5c3879c98b825e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b31022daac7f0aae023a449f1f5628ef302da9f4cba6207f3c5c3879c98b825e", kill_on_drop: false }`
[INFO] [stdout] b31022daac7f0aae023a449f1f5628ef302da9f4cba6207f3c5c3879c98b825e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+4c5f6e6277b89e47d73a192078697f7a5f3dc0ac" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a765e216d6a8152fcd9371ec3b2457c65abc8273ae14cb7970426b0b09de6cb2
[INFO] running `Command { std: "docker" "start" "-a" "a765e216d6a8152fcd9371ec3b2457c65abc8273ae14cb7970426b0b09de6cb2", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "a765e216d6a8152fcd9371ec3b2457c65abc8273ae14cb7970426b0b09de6cb2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a765e216d6a8152fcd9371ec3b2457c65abc8273ae14cb7970426b0b09de6cb2", kill_on_drop: false }`
[INFO] [stdout] a765e216d6a8152fcd9371ec3b2457c65abc8273ae14cb7970426b0b09de6cb2