[INFO] cloning repository https://github.com/ianakotey/grade_gen
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ianakotey/grade_gen" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fianakotey%2Fgrade_gen", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fianakotey%2Fgrade_gen'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] de49c2bc8724de91f97a4b1f4bd00e610e15345f
[INFO] checking ianakotey/grade_gen against master#fe55364329579d361b1ab565728bc033a7dba07e for pr-146013
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fianakotey%2Fgrade_gen" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ianakotey/grade_gen
[INFO] finished tweaking git repo https://github.com/ianakotey/grade_gen
[INFO] tweaked toml for git repo https://github.com/ianakotey/grade_gen written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ianakotey/grade_gen on toolchain fe55364329579d361b1ab565728bc033a7dba07e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fe55364329579d361b1ab565728bc033a7dba07e" "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" "+fe55364329579d361b1ab565728bc033a7dba07e" "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 72 packages to latest compatible versions
[INFO] [stderr]       Adding dirs v4.0.0 (available: v6.0.0)
[INFO] [stderr]       Adding snafu v0.7.5 (available: v0.8.9)
[INFO] [stderr]       Adding wasi v0.10.0+wasi-snapshot-preview1 (available: v0.10.2+wasi-snapshot-preview1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fe55364329579d361b1ab565728bc033a7dba07e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded quick-xml v0.4.2
[INFO] [stderr]   Downloaded simple_excel_writer v0.2.0
[INFO] [stderr]   Downloaded office v0.8.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+fe55364329579d361b1ab565728bc033a7dba07e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b7ffdb46a9eb0aea07e2b2a8e87361811ae89cd56c18d3a564925536eacdcbcb
[INFO] running `Command { std: "docker" "start" "-a" "b7ffdb46a9eb0aea07e2b2a8e87361811ae89cd56c18d3a564925536eacdcbcb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b7ffdb46a9eb0aea07e2b2a8e87361811ae89cd56c18d3a564925536eacdcbcb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7ffdb46a9eb0aea07e2b2a8e87361811ae89cd56c18d3a564925536eacdcbcb", kill_on_drop: false }`
[INFO] [stdout] b7ffdb46a9eb0aea07e2b2a8e87361811ae89cd56c18d3a564925536eacdcbcb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+fe55364329579d361b1ab565728bc033a7dba07e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6c37bf959f42c064a6146822c41d476f3864b6146c727566287b4760dd68a393
[INFO] running `Command { std: "docker" "start" "-a" "6c37bf959f42c064a6146822c41d476f3864b6146c727566287b4760dd68a393", kill_on_drop: false }`
[INFO] [stderr] error: failed to download `encoding-index-singlebyte v1.20141219.5`
[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 `encoding-index-singlebyte v1.20141219.5`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to create directory `/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/encoding-index-singlebyte-1.20141219.5`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   Read-only file system (os error 30)
[INFO] running `Command { std: "docker" "inspect" "6c37bf959f42c064a6146822c41d476f3864b6146c727566287b4760dd68a393", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c37bf959f42c064a6146822c41d476f3864b6146c727566287b4760dd68a393", kill_on_drop: false }`
[INFO] [stdout] 6c37bf959f42c064a6146822c41d476f3864b6146c727566287b4760dd68a393