[INFO] fetching crate prost 0.10.4...
[INFO] checking prost-0.10.4 against try#caa9a0ab7f12e74ec4868e297b789e6c6860d50a for pr-98370-1
[INFO] extracting crate prost 0.10.4 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate prost 0.10.4 on toolchain caa9a0ab7f12e74ec4868e297b789e6c6860d50a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+caa9a0ab7f12e74ec4868e297b789e6c6860d50a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate prost 0.10.4
[INFO] finished tweaking crates.io crate prost 0.10.4
[INFO] tweaked toml for crates.io crate prost 0.10.4 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+caa9a0ab7f12e74ec4868e297b789e6c6860d50a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+caa9a0ab7f12e74ec4868e297b789e6c6860d50a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+caa9a0ab7f12e74ec4868e297b789e6c6860d50a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a3f185d7404cbfdae63795d802ac309e2e9059ccbef5e2d52db0f91b186a671d
[INFO] running `Command { std: "docker" "start" "-a" "a3f185d7404cbfdae63795d802ac309e2e9059ccbef5e2d52db0f91b186a671d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a3f185d7404cbfdae63795d802ac309e2e9059ccbef5e2d52db0f91b186a671d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3f185d7404cbfdae63795d802ac309e2e9059ccbef5e2d52db0f91b186a671d", kill_on_drop: false }`
[INFO] [stdout] a3f185d7404cbfdae63795d802ac309e2e9059ccbef5e2d52db0f91b186a671d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+caa9a0ab7f12e74ec4868e297b789e6c6860d50a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6ea1f6c4848c518c8af95b7ab9a2e3a45a92e105013d9c2308bd373996de327f
[INFO] running `Command { std: "docker" "start" "-a" "6ea1f6c4848c518c8af95b7ab9a2e3a45a92e105013d9c2308bd373996de327f", kill_on_drop: false }`
[INFO] [stderr] >> 1st remove `/opt/rustwide/cargo-home/registry/src`
[INFO] [stderr] error: Read-only file system (os error 30)
[INFO] running `Command { std: "docker" "inspect" "6ea1f6c4848c518c8af95b7ab9a2e3a45a92e105013d9c2308bd373996de327f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ea1f6c4848c518c8af95b7ab9a2e3a45a92e105013d9c2308bd373996de327f", kill_on_drop: false }`
[INFO] [stdout] 6ea1f6c4848c518c8af95b7ab9a2e3a45a92e105013d9c2308bd373996de327f