[INFO] fetching crate mini-v8 0.3.0...
[INFO] checking mini-v8-0.3.0 against master#3aedcf06b73fc36feeebca3d579e1d2a6c40acc5 for pr-65819
[INFO] extracting crate mini-v8 0.3.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate mini-v8 0.3.0 on toolchain 3aedcf06b73fc36feeebca3d579e1d2a6c40acc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "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-1/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" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 284620ac8f7458bbe20c3643e40e8f0ed01c6e3633ac1b70670fb8f1e2319495
[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" "284620ac8f7458bbe20c3643e40e8f0ed01c6e3633ac1b70670fb8f1e2319495", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "284620ac8f7458bbe20c3643e40e8f0ed01c6e3633ac1b70670fb8f1e2319495", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "284620ac8f7458bbe20c3643e40e8f0ed01c6e3633ac1b70670fb8f1e2319495", kill_on_drop: false }`
[INFO] [stdout] 284620ac8f7458bbe20c3643e40e8f0ed01c6e3633ac1b70670fb8f1e2319495
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4400165732fdace1487a47257362fe6d9f8a233233dc41b3909f91ab5428d366
[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" "4400165732fdace1487a47257362fe6d9f8a233233dc41b3909f91ab5428d366", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.72
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling cc v1.0.57
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking unicode-segmentation v1.6.0
[INFO] [stderr]     Checking utf8parse v0.1.1
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking dirs-sys v0.3.5
[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 a macro (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`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "4400165732fdace1487a47257362fe6d9f8a233233dc41b3909f91ab5428d366", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4400165732fdace1487a47257362fe6d9f8a233233dc41b3909f91ab5428d366", kill_on_drop: false }`
[INFO] [stdout] 4400165732fdace1487a47257362fe6d9f8a233233dc41b3909f91ab5428d366