[INFO] fetching crate rate-core 0.41.0...
[INFO] testing rate-core-0.41.0 against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1
[INFO] extracting crate rate-core 0.41.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate rate-core 0.41.0
[INFO] finished tweaking crates.io crate rate-core 0.41.0
[INFO] tweaked toml for crates.io crate rate-core 0.41.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rate-core 0.41.0 on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 244 packages to latest compatible versions
[INFO] [stderr]       Adding derive_more v0.99.20 (available: v2.0.1)
[INFO] [stderr]       Adding env_logger v0.9.3 (available: v0.11.8)
[INFO] [stderr]       Adding meio v0.95.2 (available: v0.97.0)
[INFO] [stderr]       Adding meio-connect v0.95.2 (available: v0.97.0)
[INFO] [stderr]       Adding reqwest v0.11.27 (available: v0.12.23)
[INFO] [stderr]       Adding strum v0.21.0 (available: v0.27.2)
[INFO] [stderr]       Adding thiserror v1.0.69 (available: v2.0.16)
[INFO] [stderr]       Adding typed-slab v0.1.8 (available: v0.2.1)
[INFO] [stderr]       Adding uuid v0.8.2 (available: v1.18.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rill-protocol v0.41.0
[INFO] [stderr]   Downloaded meio v0.95.2
[INFO] [stderr]   Downloaded typed-slab v0.1.8
[INFO] [stderr]   Downloaded rill-engine v0.41.0
[INFO] [stderr]   Downloaded meio-connect v0.95.2
[INFO] [stderr]   Downloaded metacrate v0.1.2
[INFO] [stderr]   Downloaded flexbuffers v2.0.0
[INFO] [stderr]   Downloaded meio-protocol v0.95.2
[INFO] [stderr]   Downloaded vectorize v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8f76ed1d8fdd371d7b9f8b95044af7c53d57d6543a196c5f031a9a626d41f762
[INFO] running `Command { std: "docker" "start" "-a" "8f76ed1d8fdd371d7b9f8b95044af7c53d57d6543a196c5f031a9a626d41f762", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8f76ed1d8fdd371d7b9f8b95044af7c53d57d6543a196c5f031a9a626d41f762", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f76ed1d8fdd371d7b9f8b95044af7c53d57d6543a196c5f031a9a626d41f762", kill_on_drop: false }`
[INFO] [stdout] 8f76ed1d8fdd371d7b9f8b95044af7c53d57d6543a196c5f031a9a626d41f762
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 691dc7e514c42b083aa4052e36e4090a03f660c21a87a6e3634b1903c38b6e48
[INFO] running `Command { std: "docker" "start" "-a" "691dc7e514c42b083aa4052e36e4090a03f660c21a87a6e3634b1903c38b6e48", kill_on_drop: false }`
[INFO] [stderr] error: failed to download `base64 v0.21.7`
[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 `base64 v0.21.7`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to create directory `/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/base64-0.21.7`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   Read-only file system (os error 30)
[INFO] running `Command { std: "docker" "inspect" "691dc7e514c42b083aa4052e36e4090a03f660c21a87a6e3634b1903c38b6e48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "691dc7e514c42b083aa4052e36e4090a03f660c21a87a6e3634b1903c38b6e48", kill_on_drop: false }`
[INFO] [stdout] 691dc7e514c42b083aa4052e36e4090a03f660c21a87a6e3634b1903c38b6e48