[INFO] updating cached repository https://github.com/izelnakri/mber-rust
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1d3ff7bc064ea5c0401a254ae5e0d1f8f92295bc
[INFO] checking izelnakri/mber-rust against master#fe6d05a8b32f5c66c427ca524dbcce5a7145f87e for pr-64327
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fizelnakri%2Fmber-rust" "work/builds/worker-0/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/izelnakri/mber-rust on toolchain fe6d05a8b32f5c66c427ca524dbcce5a7145f87e-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+fe6d05a8b32f5c66c427ca524dbcce5a7145f87e-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/izelnakri/mber-rust
[INFO] finished tweaking git repo https://github.com/izelnakri/mber-rust
[INFO] tweaked toml for git repo https://github.com/izelnakri/mber-rust written to work/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/izelnakri/mber-rust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+fe6d05a8b32f5c66c427ca524dbcce5a7145f87e-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+fe6d05a8b32f5c66c427ca524dbcce5a7145f87e-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 285ca8f527005f8f146d65c0f6d9cb2e887a036040fcea46075bf807c7e92bec
[INFO] running `"docker" "start" "-a" "285ca8f527005f8f146d65c0f6d9cb2e887a036040fcea46075bf807c7e92bec"`
[INFO] [stderr]    Compiling serde v1.0.100
[INFO] [stderr]     Checking h2 v0.1.26
[INFO] [stderr]     Checking tokio-reactor v0.1.9
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking hyper v0.12.34
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Checking mustache v0.9.0
[INFO] [stderr]    Compiling toml v0.5.3
[INFO] [stderr]    Compiling mber v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `mber v0.1.3 (/opt/rustwide/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/mber-d144547bda56f8a2/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" "285ca8f527005f8f146d65c0f6d9cb2e887a036040fcea46075bf807c7e92bec"`
[INFO] running `"docker" "rm" "-f" "285ca8f527005f8f146d65c0f6d9cb2e887a036040fcea46075bf807c7e92bec"`
[INFO] [stdout] 285ca8f527005f8f146d65c0f6d9cb2e887a036040fcea46075bf807c7e92bec