[INFO] cloning repository https://github.com/VivekChaurasia03/RUST-JSON-Writer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/VivekChaurasia03/RUST-JSON-Writer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVivekChaurasia03%2FRUST-JSON-Writer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVivekChaurasia03%2FRUST-JSON-Writer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 27d319dc9ff5afd24d58a0de4e56814b02b3db93
[INFO] checking VivekChaurasia03/RUST-JSON-Writer against try#2b41547e41f63ea0ca9cb25417ddd569b19e6a50 for pr-134273
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVivekChaurasia03%2FRUST-JSON-Writer" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/VivekChaurasia03/RUST-JSON-Writer on toolchain 2b41547e41f63ea0ca9cb25417ddd569b19e6a50
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2b41547e41f63ea0ca9cb25417ddd569b19e6a50" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/VivekChaurasia03/RUST-JSON-Writer
[INFO] finished tweaking git repo https://github.com/VivekChaurasia03/RUST-JSON-Writer
[INFO] tweaked toml for git repo https://github.com/VivekChaurasia03/RUST-JSON-Writer written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/VivekChaurasia03/RUST-JSON-Writer 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" "+2b41547e41f63ea0ca9cb25417ddd569b19e6a50" "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 VivekChaurasia03/RUST-JSON-Writer against try#2b41547e41f63ea0ca9cb25417ddd569b19e6a50 for pr-134273
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVivekChaurasia03%2FRUST-JSON-Writer" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/VivekChaurasia03/RUST-JSON-Writer on toolchain 2b41547e41f63ea0ca9cb25417ddd569b19e6a50
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2b41547e41f63ea0ca9cb25417ddd569b19e6a50" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/VivekChaurasia03/RUST-JSON-Writer
[INFO] finished tweaking git repo https://github.com/VivekChaurasia03/RUST-JSON-Writer
[INFO] tweaked toml for git repo https://github.com/VivekChaurasia03/RUST-JSON-Writer written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/VivekChaurasia03/RUST-JSON-Writer 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" "+2b41547e41f63ea0ca9cb25417ddd569b19e6a50" "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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+2b41547e41f63ea0ca9cb25417ddd569b19e6a50" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 08e4ef32da0df8fe2a8e109ab6acc2d5574cf2a29b8e8185ab32f770f1d8aff4
[INFO] running `Command { std: "docker" "start" "-a" "08e4ef32da0df8fe2a8e109ab6acc2d5574cf2a29b8e8185ab32f770f1d8aff4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "08e4ef32da0df8fe2a8e109ab6acc2d5574cf2a29b8e8185ab32f770f1d8aff4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08e4ef32da0df8fe2a8e109ab6acc2d5574cf2a29b8e8185ab32f770f1d8aff4", kill_on_drop: false }`
[INFO] [stdout] 08e4ef32da0df8fe2a8e109ab6acc2d5574cf2a29b8e8185ab32f770f1d8aff4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+2b41547e41f63ea0ca9cb25417ddd569b19e6a50" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 678ccf206edeaeb58205d2c0358794f4ba826c78d1122d1ce709fb6473f702f5
[INFO] running `Command { std: "docker" "start" "-a" "678ccf206edeaeb58205d2c0358794f4ba826c78d1122d1ce709fb6473f702f5", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.78
[INFO] [stderr]    Compiling serde v1.0.196
[INFO] [stderr]    Compiling serde_json v1.0.113
[INFO] [stderr]     Checking itoa v1.0.10
[INFO] [stderr]     Checking ryu v1.0.16
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling serde_derive v1.0.196
[INFO] [stderr]     Checking jsonwriter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.55s
[INFO] running `Command { std: "docker" "inspect" "678ccf206edeaeb58205d2c0358794f4ba826c78d1122d1ce709fb6473f702f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "678ccf206edeaeb58205d2c0358794f4ba826c78d1122d1ce709fb6473f702f5", kill_on_drop: false }`
[INFO] [stdout] 678ccf206edeaeb58205d2c0358794f4ba826c78d1122d1ce709fb6473f702f5