[INFO] updating cached repository https://github.com/lwagner94/mycpu
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d057e3d466e95dea6ce0124997f4d08b01ce4cd5
[INFO] checking lwagner94/mycpu against try#0ab79c4b48ad19260fa46623f452c1b403a360e8 for pr-74315
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flwagner94%2Fmycpu" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lwagner94/mycpu on toolchain 0ab79c4b48ad19260fa46623f452c1b403a360e8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "read-manifest" "--manifest-path" "Cargo.toml", 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-6/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" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7771e0e674987d7a988405de88b46b469f8e70345e87a9b7a77af78830831cae
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "7771e0e674987d7a988405de88b46b469f8e70345e87a9b7a77af78830831cae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7771e0e674987d7a988405de88b46b469f8e70345e87a9b7a77af78830831cae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7771e0e674987d7a988405de88b46b469f8e70345e87a9b7a77af78830831cae", kill_on_drop: false }`
[INFO] [stdout] 7771e0e674987d7a988405de88b46b469f8e70345e87a9b7a77af78830831cae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 065fceecd82fd77e3805c8f33a9da5da90b38662f4c83aab3b2f902e22066f66
[INFO] running `Command { std: "docker" "start" "-a" "065fceecd82fd77e3805c8f33a9da5da90b38662f4c83aab3b2f902e22066f66", 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-2d1f7de2c1c621cd/build-script-build` (exit code: 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" "065fceecd82fd77e3805c8f33a9da5da90b38662f4c83aab3b2f902e22066f66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "065fceecd82fd77e3805c8f33a9da5da90b38662f4c83aab3b2f902e22066f66", kill_on_drop: false }`
[INFO] [stdout] 065fceecd82fd77e3805c8f33a9da5da90b38662f4c83aab3b2f902e22066f66