[INFO] fetching crate mini-v8 0.3.0...
[INFO] testing mini-v8-0.3.0 against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] extracting crate mini-v8 0.3.0 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate mini-v8 0.3.0 on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mini-v8 0.3.0
[INFO] finished tweaking crates.io crate mini-v8 0.3.0
[INFO] tweaked toml for crates.io crate mini-v8 0.3.0 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate crates.io crate mini-v8 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d5514d1c20f7048f4287a484636c9defa9a1a976bfa0b538b519e2d1ccebe9f0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d5514d1c20f7048f4287a484636c9defa9a1a976bfa0b538b519e2d1ccebe9f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d5514d1c20f7048f4287a484636c9defa9a1a976bfa0b538b519e2d1ccebe9f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5514d1c20f7048f4287a484636c9defa9a1a976bfa0b538b519e2d1ccebe9f0", kill_on_drop: false }`
[INFO] [stdout] d5514d1c20f7048f4287a484636c9defa9a1a976bfa0b538b519e2d1ccebe9f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a342d4501d64bd9c832538ed8b12c575bdc41f8ce9e8025f630f5cfbe5281a26
[INFO] running `Command { std: "docker" "start" "-a" "a342d4501d64bd9c832538ed8b12c575bdc41f8ce9e8025f630f5cfbe5281a26", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.57
[INFO] [stderr]    Compiling mini-v8 v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: environment variable `V8_PATH` not defined
[INFO] [stdout]  --> build.rs:4:14
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let v8 = env!("V8_PATH");
[INFO] [stdout]   |              ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this error originates in the macro `env` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mini-v8` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "a342d4501d64bd9c832538ed8b12c575bdc41f8ce9e8025f630f5cfbe5281a26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a342d4501d64bd9c832538ed8b12c575bdc41f8ce9e8025f630f5cfbe5281a26", kill_on_drop: false }`
[INFO] [stdout] a342d4501d64bd9c832538ed8b12c575bdc41f8ce9e8025f630f5cfbe5281a26