[INFO] cloning repository https://github.com/um4ng-tiw/Rust_Practice
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/um4ng-tiw/Rust_Practice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fum4ng-tiw%2FRust_Practice", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fum4ng-tiw%2FRust_Practice'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6e9d530a201f65e7690ec0a1a8f26b6efcea38b9
[INFO] checking um4ng-tiw/Rust_Practice against try#724e78794d2cf06eef820a24c9a4608d63435e1d for pr-149145
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fum4ng-tiw%2FRust_Practice" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/um4ng-tiw/Rust_Practice
[INFO] finished tweaking git repo https://github.com/um4ng-tiw/Rust_Practice
[INFO] tweaked toml for git repo https://github.com/um4ng-tiw/Rust_Practice written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/um4ng-tiw/Rust_Practice on toolchain 724e78794d2cf06eef820a24c9a4608d63435e1d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+724e78794d2cf06eef820a24c9a4608d63435e1d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/um4ng-tiw/Rust_Practice 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" "+724e78794d2cf06eef820a24c9a4608d63435e1d" "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 um4ng-tiw/Rust_Practice against try#724e78794d2cf06eef820a24c9a4608d63435e1d for pr-149145
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fum4ng-tiw%2FRust_Practice" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/um4ng-tiw/Rust_Practice
[INFO] finished tweaking git repo https://github.com/um4ng-tiw/Rust_Practice
[INFO] tweaked toml for git repo https://github.com/um4ng-tiw/Rust_Practice written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/um4ng-tiw/Rust_Practice on toolchain 724e78794d2cf06eef820a24c9a4608d63435e1d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+724e78794d2cf06eef820a24c9a4608d63435e1d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/um4ng-tiw/Rust_Practice 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" "+724e78794d2cf06eef820a24c9a4608d63435e1d" "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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+724e78794d2cf06eef820a24c9a4608d63435e1d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e425c1f91ec58d6a5360ffdca3792df73acae47dc2410f85bccca8fbf3317532
[INFO] running `Command { std: "docker" "start" "-a" "e425c1f91ec58d6a5360ffdca3792df73acae47dc2410f85bccca8fbf3317532", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e425c1f91ec58d6a5360ffdca3792df73acae47dc2410f85bccca8fbf3317532", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e425c1f91ec58d6a5360ffdca3792df73acae47dc2410f85bccca8fbf3317532", kill_on_drop: false }`
[INFO] [stdout] e425c1f91ec58d6a5360ffdca3792df73acae47dc2410f85bccca8fbf3317532
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+724e78794d2cf06eef820a24c9a4608d63435e1d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bd9f636ec8fe627b7b392061ba146e62de4400641499e8085c68dbf86787d801
[INFO] running `Command { std: "docker" "start" "-a" "bd9f636ec8fe627b7b392061ba146e62de4400641499e8085c68dbf86787d801", kill_on_drop: false }`
[INFO] [stderr]     Checking RUST v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] running `Command { std: "docker" "inspect" "bd9f636ec8fe627b7b392061ba146e62de4400641499e8085c68dbf86787d801", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd9f636ec8fe627b7b392061ba146e62de4400641499e8085c68dbf86787d801", kill_on_drop: false }`
[INFO] [stdout] bd9f636ec8fe627b7b392061ba146e62de4400641499e8085c68dbf86787d801