[INFO] fetching crate mber 0.1.5...
[INFO] checking mber-0.1.5 against beta-2019-10-27 for pr-65897
[INFO] extracting crate mber 0.1.5 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate mber 0.1.5 on toolchain beta-2019-10-27
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate mber 0.1.5
[INFO] finished tweaking crates.io crate mber 0.1.5
[INFO] tweaked toml for crates.io crate mber 0.1.5 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate mber 0.1.5 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=allow" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-10-27" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3148323e95cb545ff7283cf04ffb32efb4ab8848e8eedff8a09913ca24325561
[INFO] running `"docker" "start" "-a" "3148323e95cb545ff7283cf04ffb32efb4ab8848e8eedff8a09913ca24325561"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling serde v1.0.100
[INFO] [stderr]     Checking want v0.2.0
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling serde_derive v1.0.100
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking Inflector v0.11.4
[INFO] [stderr]     Checking tokio-threadpool v0.1.15
[INFO] [stderr]     Checking tokio-reactor v0.1.9
[INFO] [stderr]     Checking h2 v0.1.26
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking hyper v0.12.34
[INFO] [stderr]    Compiling serde_json v1.0.40
[INFO] [stderr]    Compiling mustache v0.9.0
[INFO] [stderr]    Compiling toml v0.5.3
[INFO] [stderr]    Compiling mber v0.1.5 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `mber v0.1.5 (/opt/rustwide/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/mber-0566602d3e583d1b/build-script-build` (exit code: 1)
[INFO] [stderr] --- stderr
[INFO] [stderr] Error: Os { code: 30, kind: Other, message: "Read-only file system" }
[INFO] [stderr] 
[INFO] running `"docker" "inspect" "3148323e95cb545ff7283cf04ffb32efb4ab8848e8eedff8a09913ca24325561"`
[INFO] running `"docker" "rm" "-f" "3148323e95cb545ff7283cf04ffb32efb4ab8848e8eedff8a09913ca24325561"`
[INFO] [stdout] 3148323e95cb545ff7283cf04ffb32efb4ab8848e8eedff8a09913ca24325561