[INFO] cloning repository https://github.com/hujianxin/rustlings-mysolution
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hujianxin/rustlings-mysolution" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhujianxin%2Frustlings-mysolution", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhujianxin%2Frustlings-mysolution'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] edaaaf6948b2e516f73c094e03f20c10f9942657
[INFO] building hujianxin/rustlings-mysolution against master#c52b9c10bfb5164015eb977ff498e0597ae63eb1 for pr-97025
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhujianxin%2Frustlings-mysolution" "/workspace/builds/worker-71/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-71/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hujianxin/rustlings-mysolution on toolchain c52b9c10bfb5164015eb977ff498e0597ae63eb1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c52b9c10bfb5164015eb977ff498e0597ae63eb1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hujianxin/rustlings-mysolution
[INFO] finished tweaking git repo https://github.com/hujianxin/rustlings-mysolution
[INFO] tweaked toml for git repo https://github.com/hujianxin/rustlings-mysolution written to /workspace/builds/worker-71/source/Cargo.toml
[INFO] crate git repo https://github.com/hujianxin/rustlings-mysolution already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c52b9c10bfb5164015eb977ff498e0597ae63eb1" "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 clicolors-control v0.2.0
[INFO] [stderr]   Downloaded console v0.6.2
[INFO] [stderr]   Downloaded inotify v0.6.1
[INFO] [stderr]   Downloaded notify v4.0.12
[INFO] [stderr]   Downloaded console v0.7.5
[INFO] [stderr]   Downloaded indicatif v0.9.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/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" "+c52b9c10bfb5164015eb977ff498e0597ae63eb1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d3def0352a8a709ff76b4e82dc6a0b50d40e86c49a2e06887b0a3951d88a681b
[INFO] running `Command { std: "docker" "start" "-a" "d3def0352a8a709ff76b4e82dc6a0b50d40e86c49a2e06887b0a3951d88a681b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d3def0352a8a709ff76b4e82dc6a0b50d40e86c49a2e06887b0a3951d88a681b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3def0352a8a709ff76b4e82dc6a0b50d40e86c49a2e06887b0a3951d88a681b", kill_on_drop: false }`
[INFO] [stdout] d3def0352a8a709ff76b4e82dc6a0b50d40e86c49a2e06887b0a3951d88a681b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/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" "+c52b9c10bfb5164015eb977ff498e0597ae63eb1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e2681eb009d7f840a50d63599a0f920533459b2ddda7f80ce4902762438b47e2
[INFO] running `Command { std: "docker" "start" "-a" "e2681eb009d7f840a50d63599a0f920533459b2ddda7f80ce4902762438b47e2", 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" "e2681eb009d7f840a50d63599a0f920533459b2ddda7f80ce4902762438b47e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2681eb009d7f840a50d63599a0f920533459b2ddda7f80ce4902762438b47e2", kill_on_drop: false }`
[INFO] [stdout] e2681eb009d7f840a50d63599a0f920533459b2ddda7f80ce4902762438b47e2