[INFO] updating cached repository https://github.com/SkylerLipthay/mini-v8
[INFO] running `"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"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c796cedda6cdfea6eb649bb8fdefe012531d4b56
[INFO] checking SkylerLipthay/mini-v8 against master#30ca215b4e38b32aa7abdd635c5e2d56f5724494 for pr-66037
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSkylerLipthay%2Fmini-v8" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SkylerLipthay/mini-v8 on toolchain 30ca215b4e38b32aa7abdd635c5e2d56f5724494
[INFO] running `"/workspace/cargo-home/bin/cargo" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/SkylerLipthay/mini-v8
[INFO] finished tweaking git repo https://github.com/SkylerLipthay/mini-v8
[INFO] tweaked toml for git repo https://github.com/SkylerLipthay/mini-v8 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/SkylerLipthay/mini-v8 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "/opt/rustwide/cargo-home/bin/cargo" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "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] 94a5532e5b0ce72790490a053e0956895f428ae46cb227ca52355adbbf8e1e54
[INFO] running `"docker" "start" "-a" "94a5532e5b0ce72790490a053e0956895f428ae46cb227ca52355adbbf8e1e54"`
[INFO] [stderr]    Compiling mini-v8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking nix v0.14.1
[INFO] [stderr] error: environment variable `V8_PATH` not defined
[INFO] [stderr]  --> build.rs:4:14
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let v8 = env!("V8_PATH");
[INFO] [stderr]   |              ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `mini-v8`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "94a5532e5b0ce72790490a053e0956895f428ae46cb227ca52355adbbf8e1e54"`
[INFO] running `"docker" "rm" "-f" "94a5532e5b0ce72790490a053e0956895f428ae46cb227ca52355adbbf8e1e54"`
[INFO] [stdout] 94a5532e5b0ce72790490a053e0956895f428ae46cb227ca52355adbbf8e1e54