[INFO] fetching crate dgraph-rs 0.2.8...
[INFO] checking dgraph-rs-0.2.8 against master#8c32e313cccf7df531e2d49ffb8227bb92304aee for pr-145608-1
[INFO] extracting crate dgraph-rs 0.2.8 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate dgraph-rs 0.2.8
[INFO] finished tweaking crates.io crate dgraph-rs 0.2.8
[INFO] tweaked toml for crates.io crate dgraph-rs 0.2.8 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate dgraph-rs 0.2.8 on toolchain 8c32e313cccf7df531e2d49ffb8227bb92304aee
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 149 packages to latest compatible versions
[INFO] [stderr]       Adding async-std v1.0.1 (available: v1.13.2)
[INFO] [stderr]       Adding grpc v0.6.2 (available: v0.8.3)
[INFO] [stderr]       Adding httpbis v0.7.0 (available: v0.9.1)
[INFO] [stderr]       Adding protobuf v2.8.2 (available: v2.28.0)
[INFO] [stderr]       Adding protobuf-codegen v2.8.2 (available: v2.28.0)
[INFO] [stderr]       Adding protoc v2.8.2 (available: v2.28.0)
[INFO] [stderr]       Adding protoc-rust v2.8.2 (available: v2.28.0)
[INFO] [stderr]       Adding protoc-rust-grpc v0.6.2 (available: v0.8.3)
[INFO] [stderr]       Adding rand v0.7.3 (available: v0.9.2)
[INFO] [stderr]       Adding rand_xoshiro v0.4.0 (available: v0.7.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded protoc-rust-grpc v0.6.2
[INFO] [stderr]   Downloaded protoc-rust v2.8.2
[INFO] [stderr]   Downloaded protoc v2.8.2
[INFO] [stderr]   Downloaded grpc-compiler v0.6.2
[INFO] [stderr]   Downloaded tokio-tls-api v0.1.22
[INFO] [stderr]   Downloaded tokio-uds v0.1.7
[INFO] [stderr]   Downloaded protobuf-codegen v2.8.2
[INFO] [stderr]   Downloaded httpbis v0.7.0
[INFO] [stderr]   Downloaded async-macros v1.0.0
[INFO] [stderr]   Downloaded grpc v0.6.2
[INFO] [stderr]   Downloaded slab v0.3.0
[INFO] [stderr]   Downloaded protobuf v2.8.2
[INFO] [stderr]   Downloaded tokio-timer v0.1.2
[INFO] [stderr]   Downloaded async-task v1.3.1
[INFO] [stderr]   Downloaded futures-timer v1.0.3
[INFO] [stderr]   Downloaded tls-api-stub v0.1.22
[INFO] [stderr]   Downloaded tls-api v0.1.22
[INFO] [stderr]   Downloaded async-std v1.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 30bd69334d87aa634a2f5fdadd5b75153557baa68a4ba7c2959d091daab7e50c
[INFO] running `Command { std: "docker" "start" "-a" "30bd69334d87aa634a2f5fdadd5b75153557baa68a4ba7c2959d091daab7e50c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "30bd69334d87aa634a2f5fdadd5b75153557baa68a4ba7c2959d091daab7e50c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30bd69334d87aa634a2f5fdadd5b75153557baa68a4ba7c2959d091daab7e50c", kill_on_drop: false }`
[INFO] [stdout] 30bd69334d87aa634a2f5fdadd5b75153557baa68a4ba7c2959d091daab7e50c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5fff96a08761b8392a552701640306be6c09a642aae39bbd7a3df3af8ba243bf
[INFO] running `Command { std: "docker" "start" "-a" "5fff96a08761b8392a552701640306be6c09a642aae39bbd7a3df3af8ba243bf", kill_on_drop: false }`
[INFO] [stderr] error: failed to download `smallvec v0.6.14`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   unable to get packages from source
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to unpack package `smallvec v0.6.14`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to create directory `/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/smallvec-0.6.14`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   Read-only file system (os error 30)
[INFO] running `Command { std: "docker" "inspect" "5fff96a08761b8392a552701640306be6c09a642aae39bbd7a3df3af8ba243bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fff96a08761b8392a552701640306be6c09a642aae39bbd7a3df3af8ba243bf", kill_on_drop: false }`
[INFO] [stdout] 5fff96a08761b8392a552701640306be6c09a642aae39bbd7a3df3af8ba243bf