[INFO] cloning repository https://github.com/SkylerLipthay/mini-v8
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SkylerLipthay/mini-v8" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSkylerLipthay%2Fmini-v8"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSkylerLipthay%2Fmini-v8'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c796cedda6cdfea6eb649bb8fdefe012531d4b56
[INFO] checking SkylerLipthay/mini-v8 against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSkylerLipthay%2Fmini-v8" "/workspace/builds/worker-10/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SkylerLipthay/mini-v8 on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "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-10/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" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "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" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "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] a6a01aa15b5356d5d95508f88bea993aacc6d32c914ad9933d07e795ff57bbe8
[INFO] running `"docker" "start" "-a" "a6a01aa15b5356d5d95508f88bea993aacc6d32c914ad9933d07e795ff57bbe8"`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling cc v1.0.45
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking unicode-width v0.1.6
[INFO] [stderr]     Checking utf8parse v0.1.1
[INFO] [stderr]     Checking unicode-segmentation v1.3.0
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]    Compiling mini-v8 v0.1.0 (/opt/rustwide/workdir)
[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] 
[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 `"docker" "inspect" "a6a01aa15b5356d5d95508f88bea993aacc6d32c914ad9933d07e795ff57bbe8"`
[INFO] running `"docker" "rm" "-f" "a6a01aa15b5356d5d95508f88bea993aacc6d32c914ad9933d07e795ff57bbe8"`
[INFO] [stdout] a6a01aa15b5356d5d95508f88bea993aacc6d32c914ad9933d07e795ff57bbe8