[INFO] cloning repository https://github.com/dove-lang/dove
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dove-lang/dove" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdove-lang%2Fdove", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdove-lang%2Fdove'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 641ac4899c7b4c31148f6560ec377ccab7146331
[INFO] testing dove-lang/dove against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdove-lang%2Fdove" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dove-lang/dove on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dove-lang/dove
[INFO] finished tweaking git repo https://github.com/dove-lang/dove
[INFO] tweaked toml for git repo https://github.com/dove-lang/dove written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/dove-lang/dove already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] debce2e01221ac6882399a6947f00722820e1a7f8f5fc83d635a456f4d4e5f65
[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" "debce2e01221ac6882399a6947f00722820e1a7f8f5fc83d635a456f4d4e5f65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "debce2e01221ac6882399a6947f00722820e1a7f8f5fc83d635a456f4d4e5f65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "debce2e01221ac6882399a6947f00722820e1a7f8f5fc83d635a456f4d4e5f65", kill_on_drop: false }`
[INFO] [stdout] debce2e01221ac6882399a6947f00722820e1a7f8f5fc83d635a456f4d4e5f65
[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" "+62efba8a050c64249dab942951bb28f710208bc8" "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] c0a6eedf3565aa62c5662c182f0ccdd239d65b888832eedc37103ea1bfb0e8f7
[INFO] running `Command { std: "docker" "start" "-a" "c0a6eedf3565aa62c5662c182f0ccdd239d65b888832eedc37103ea1bfb0e8f7", kill_on_drop: false }`
[INFO] [stderr]    Compiling dove-core v0.1.0 (/opt/rustwide/workdir/dove-core)
[INFO] [stderr]    Compiling dove v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: couldn't read dove-core: Is a directory (os error 21)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dove` due to 2 previous errors
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "c0a6eedf3565aa62c5662c182f0ccdd239d65b888832eedc37103ea1bfb0e8f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0a6eedf3565aa62c5662c182f0ccdd239d65b888832eedc37103ea1bfb0e8f7", kill_on_drop: false }`
[INFO] [stdout] c0a6eedf3565aa62c5662c182f0ccdd239d65b888832eedc37103ea1bfb0e8f7