[INFO] cloning repository https://github.com/azastrael/variance
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/azastrael/variance" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fazastrael%2Fvariance", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fazastrael%2Fvariance'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fe1fa5207f9605f376335727f16c3f620ee77465
[INFO] checking azastrael/variance against master#4a04f252f91b2ccef6fc16817b3e7a3aeda703b6 for pr-106807
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fazastrael%2Fvariance" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/azastrael/variance on toolchain 4a04f252f91b2ccef6fc16817b3e7a3aeda703b6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4a04f252f91b2ccef6fc16817b3e7a3aeda703b6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/azastrael/variance
[INFO] finished tweaking git repo https://github.com/azastrael/variance
[INFO] tweaked toml for git repo https://github.com/azastrael/variance written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/azastrael/variance 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" "+4a04f252f91b2ccef6fc16817b3e7a3aeda703b6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:9042d5c95763f71f7b0904716b98ccadf9fc47b0f382ee962aaaed2ac70c9b8d" "/opt/rustwide/cargo-home/bin/cargo" "+4a04f252f91b2ccef6fc16817b3e7a3aeda703b6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7eba749818e82df03813d63c6f0d36bea533b1a2bf8bdbf72ba25b2100eebfba
[INFO] running `Command { std: "docker" "start" "-a" "7eba749818e82df03813d63c6f0d36bea533b1a2bf8bdbf72ba25b2100eebfba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7eba749818e82df03813d63c6f0d36bea533b1a2bf8bdbf72ba25b2100eebfba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7eba749818e82df03813d63c6f0d36bea533b1a2bf8bdbf72ba25b2100eebfba", kill_on_drop: false }`
[INFO] [stdout] 7eba749818e82df03813d63c6f0d36bea533b1a2bf8bdbf72ba25b2100eebfba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:9042d5c95763f71f7b0904716b98ccadf9fc47b0f382ee962aaaed2ac70c9b8d" "/opt/rustwide/cargo-home/bin/cargo" "+4a04f252f91b2ccef6fc16817b3e7a3aeda703b6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3f1c5e7aeb50f585332bfdec478657cc6014b1d0b4c5296cc19bcffdb92bd09f
[INFO] running `Command { std: "docker" "start" "-a" "3f1c5e7aeb50f585332bfdec478657cc6014b1d0b4c5296cc19bcffdb92bd09f", 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" "3f1c5e7aeb50f585332bfdec478657cc6014b1d0b4c5296cc19bcffdb92bd09f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f1c5e7aeb50f585332bfdec478657cc6014b1d0b4c5296cc19bcffdb92bd09f", kill_on_drop: false }`
[INFO] [stdout] 3f1c5e7aeb50f585332bfdec478657cc6014b1d0b4c5296cc19bcffdb92bd09f