[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] checking dove-lang/dove against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdove-lang%2Fdove" "/workspace/builds/worker-68/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-68/source'...
[INFO] [stderr] done.
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Updating files: 100% (40/40), done.
[INFO] validating manifest of git repo https://github.com/dove-lang/dove on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "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-68/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" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded crossterm v0.16.0
[INFO] [stderr]   Downloaded crossterm_winapi v0.6.1
[INFO] [stderr]   Downloaded colour v0.5.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/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" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9a1f18bfd69b76b9abf0c9e2958ce299502bd3d8ff49380c790bb524007ce4f5
[INFO] running `Command { std: "docker" "start" "-a" "9a1f18bfd69b76b9abf0c9e2958ce299502bd3d8ff49380c790bb524007ce4f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9a1f18bfd69b76b9abf0c9e2958ce299502bd3d8ff49380c790bb524007ce4f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a1f18bfd69b76b9abf0c9e2958ce299502bd3d8ff49380c790bb524007ce4f5", kill_on_drop: false }`
[INFO] [stdout] 9a1f18bfd69b76b9abf0c9e2958ce299502bd3d8ff49380c790bb524007ce4f5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/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" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f6152e461c56e927f74d969175aa3783dc369f3070c5f29a4068b89b213629d2
[INFO] running `Command { std: "docker" "start" "-a" "f6152e461c56e927f74d969175aa3783dc369f3070c5f29a4068b89b213629d2", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.64
[INFO] [stderr]    Compiling syn v1.0.33
[INFO] [stderr]    Compiling bumpalo v3.4.0
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling wasm-bindgen v0.2.64
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking smallvec v1.4.0
[INFO] [stderr]     Checking arc-swap v0.4.7
[INFO] [stderr]     Checking dove-core v0.1.0 (/opt/rustwide/workdir/dove-core)
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]     Checking 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] [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] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "f6152e461c56e927f74d969175aa3783dc369f3070c5f29a4068b89b213629d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6152e461c56e927f74d969175aa3783dc369f3070c5f29a4068b89b213629d2", kill_on_drop: false }`
[INFO] [stdout] f6152e461c56e927f74d969175aa3783dc369f3070c5f29a4068b89b213629d2