[INFO] cloning repository https://github.com/lwagner94/mycpu
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lwagner94/mycpu" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flwagner94%2Fmycpu", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flwagner94%2Fmycpu'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d057e3d466e95dea6ce0124997f4d08b01ce4cd5
[INFO] checking lwagner94/mycpu against master#90442458ac46b1d5eed752c316da25450f67285b for pr-81477
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flwagner94%2Fmycpu" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lwagner94/mycpu on toolchain 90442458ac46b1d5eed752c316da25450f67285b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/lwagner94/mycpu
[INFO] finished tweaking git repo https://github.com/lwagner94/mycpu
[INFO] tweaked toml for git repo https://github.com/lwagner94/mycpu written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/lwagner94/mycpu already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4e50c571fa9b577d1b1ce74a5244fdfc32b781a8e1d485f13105e32888acfba6
[INFO] running `Command { std: "docker" "start" "-a" "4e50c571fa9b577d1b1ce74a5244fdfc32b781a8e1d485f13105e32888acfba6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4e50c571fa9b577d1b1ce74a5244fdfc32b781a8e1d485f13105e32888acfba6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e50c571fa9b577d1b1ce74a5244fdfc32b781a8e1d485f13105e32888acfba6", kill_on_drop: false }`
[INFO] [stdout] 4e50c571fa9b577d1b1ce74a5244fdfc32b781a8e1d485f13105e32888acfba6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2d93d01bb3f9411c1dd0be8c2b6e33ad4f2b0d3349344d888806fbfea72f92af
[INFO] running `Command { std: "docker" "start" "-a" "2d93d01bb3f9411c1dd0be8c2b6e33ad4f2b0d3349344d888806fbfea72f92af", kill_on_drop: false }`
[INFO] [stderr]    Compiling mycpu v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `mycpu v0.1.0 (/opt/rustwide/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/mycpu-e115fd8971cc6dfd/build-script-build` (exit status: 2)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   Traceback (most recent call last):
[INFO] [stderr]     File "generate_instructions.py", line 45, in <module>
[INFO] [stderr]       with open("src/common/generated/instruction.rs", "w") as f:
[INFO] [stderr]   OSError: [Errno 30] Read-only file system: 'src/common/generated/instruction.rs'
[INFO] [stderr]   Traceback (most recent call last):
[INFO] [stderr]     File "generate_parser.py", line 41, in <module>
[INFO] [stderr]       with open("src/assembler/generated/matcher.rs", "w") as f:
[INFO] [stderr]   OSError: [Errno 30] Read-only file system: 'src/assembler/generated/matcher.rs'
[INFO] running `Command { std: "docker" "inspect" "2d93d01bb3f9411c1dd0be8c2b6e33ad4f2b0d3349344d888806fbfea72f92af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d93d01bb3f9411c1dd0be8c2b6e33ad4f2b0d3349344d888806fbfea72f92af", kill_on_drop: false }`
[INFO] [stdout] 2d93d01bb3f9411c1dd0be8c2b6e33ad4f2b0d3349344d888806fbfea72f92af