[INFO] cloning repository https://github.com/mmmaike/cb-4
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mmmaike/cb-4" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmmmaike%2Fcb-4", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmmmaike%2Fcb-4'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f0ed1913a4fd7c0de89f563c1d0823c1aefcfd6b
[INFO] checking mmmaike/cb-4/f0ed1913a4fd7c0de89f563c1d0823c1aefcfd6b against master#1fe72d35998dea48aeecaf7fc07783b0b553f24f for pr-154992
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmmmaike%2Fcb-4" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mmmaike/cb-4
[INFO] finished tweaking git repo https://github.com/mmmaike/cb-4
[INFO] tweaked toml for git repo https://github.com/mmmaike/cb-4 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mmmaike/cb-4 on toolchain 1fe72d35998dea48aeecaf7fc07783b0b553f24f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1fe72d35998dea48aeecaf7fc07783b0b553f24f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mmmaike/cb-4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1fe72d35998dea48aeecaf7fc07783b0b553f24f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rust-bison-skeleton v0.41.0
[INFO] [stderr]   Downloaded logos-derive v0.12.1
[INFO] [stderr]   Downloaded logos v0.12.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1fe72d35998dea48aeecaf7fc07783b0b553f24f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2509cf168b9448badc4a30fa00bd2f30986a77298980c694df89a6d9f2627309
[INFO] running `Command { std: "docker" "start" "-a" "2509cf168b9448badc4a30fa00bd2f30986a77298980c694df89a6d9f2627309", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2509cf168b9448badc4a30fa00bd2f30986a77298980c694df89a6d9f2627309", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2509cf168b9448badc4a30fa00bd2f30986a77298980c694df89a6d9f2627309", kill_on_drop: false }`
[INFO] [stdout] 2509cf168b9448badc4a30fa00bd2f30986a77298980c694df89a6d9f2627309
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1fe72d35998dea48aeecaf7fc07783b0b553f24f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d0b736e47040f19373ff1bdd317ad55eb6f7f72800073ec4a82339568acb20ed
[INFO] running `Command { std: "docker" "start" "-a" "d0b736e47040f19373ff1bdd317ad55eb6f7f72800073ec4a82339568acb20ed", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling syn v1.0.96
[INFO] [stderr]    Compiling regex-syntax v0.6.26
[INFO] [stderr]    Compiling rust-bison-skeleton v0.41.0
[INFO] [stderr]    Compiling cb-4 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `cb-4 v0.1.0 (/opt/rustwide/workdir)`
[INFO] [stderr] note: To improve backtraces for build dependencies, set the CARGO_PROFILE_DEV_BUILD_OVERRIDE_DEBUG=true environment variable to enable debug information generation.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/cb-4-43332743dacf6a91/build-script-build` (exit status: 1)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   CARGO_MANIFEST_DIR = "/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rust-bison-skeleton-0.41.0"
[INFO] [stderr]   file = "/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rust-bison-skeleton-0.41.0/src/lib.rs"
[INFO] [stderr]   current dir = Ok("/opt/rustwide/workdir")
[INFO] [stderr]   Bison error:
[INFO] [stderr]   bison: src/parser/minako_syntax.rs: cannot open: Read-only file system
[INFO] [stderr] 
[INFO] [stderr]   exiting with 1
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "d0b736e47040f19373ff1bdd317ad55eb6f7f72800073ec4a82339568acb20ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0b736e47040f19373ff1bdd317ad55eb6f7f72800073ec4a82339568acb20ed", kill_on_drop: false }`
[INFO] [stdout] d0b736e47040f19373ff1bdd317ad55eb6f7f72800073ec4a82339568acb20ed
