[INFO] updating cached repository TheJP/Oxidation
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/TheJP/Oxidation
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/TheJP/Oxidation" "work/ex/beta-1.38-1/sources/1.37.0/gh/TheJP/Oxidation"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/TheJP/Oxidation'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/TheJP/Oxidation" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/TheJP/Oxidation"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/TheJP/Oxidation'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3146203076c5a460b95381394c4e82c876a20e79
[INFO] sha for GitHub repo TheJP/Oxidation: 3146203076c5a460b95381394c4e82c876a20e79
[INFO] validating manifest of TheJP/Oxidation on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of TheJP/Oxidation on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing TheJP/Oxidation
[INFO] finished frobbing TheJP/Oxidation
[INFO] frobbed toml for TheJP/Oxidation written to work/ex/beta-1.38-1/sources/1.37.0/gh/TheJP/Oxidation/Cargo.toml
[INFO] started frobbing TheJP/Oxidation
[INFO] finished frobbing TheJP/Oxidation
[INFO] frobbed toml for TheJP/Oxidation written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/TheJP/Oxidation/Cargo.toml
[INFO] crate TheJP/Oxidation already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing TheJP/Oxidation against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/TheJP/Oxidation:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 8ae087ea951fbab733f414faa5826db5da2274a43d7115df801e49a5d005382c
[INFO] running `"docker" "start" "-a" "8ae087ea951fbab733f414faa5826db5da2274a43d7115df801e49a5d005382c"`
[INFO] [stderr]    Compiling oxidation v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error: failed to run custom build command for `oxidation v0.1.0 (/opt/crater/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/crater/target/debug/build/oxidation-b360bdf1f4782e7a/build-script-build` (exit code: 1)
[INFO] [stderr] --- stderr
[INFO] [stderr] mkdir: cannot create directory 'target': Read-only file system
[INFO] [stderr] 
[INFO] running `"docker" "inspect" "8ae087ea951fbab733f414faa5826db5da2274a43d7115df801e49a5d005382c"`
[INFO] running `"docker" "rm" "-f" "8ae087ea951fbab733f414faa5826db5da2274a43d7115df801e49a5d005382c"`
[INFO] [stdout] 8ae087ea951fbab733f414faa5826db5da2274a43d7115df801e49a5d005382c