[INFO] fetching crate tychoos 0.0.1...
[INFO] testing tychoos-0.0.1 against master#caccb4d0368bd918ef6668af8e13834d07040417 for pr-146098-1
[INFO] extracting crate tychoos 0.0.1 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate tychoos 0.0.1
[INFO] finished tweaking crates.io crate tychoos 0.0.1
[INFO] tweaked toml for crates.io crate tychoos 0.0.1 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate tychoos 0.0.1 on toolchain caccb4d0368bd918ef6668af8e13834d07040417
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate tychoos 0.0.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1290f32e40a11948778660b646b03b30cde878627be58c07c77d39c2ea7e405d
[INFO] running `Command { std: "docker" "start" "-a" "1290f32e40a11948778660b646b03b30cde878627be58c07c77d39c2ea7e405d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1290f32e40a11948778660b646b03b30cde878627be58c07c77d39c2ea7e405d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1290f32e40a11948778660b646b03b30cde878627be58c07c77d39c2ea7e405d", kill_on_drop: false }`
[INFO] [stdout] 1290f32e40a11948778660b646b03b30cde878627be58c07c77d39c2ea7e405d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0d814a10b6a92f735b602eff6600f6f649286b140b3dcc58d27c7ff5dd5a5ae9
[INFO] running `Command { std: "docker" "start" "-a" "0d814a10b6a92f735b602eff6600f6f649286b140b3dcc58d27c7ff5dd5a5ae9", kill_on_drop: false }`
[INFO] [stderr]    Compiling tychoos v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0463]: can't find crate for `core`
[INFO] [stdout]   |
[INFO] [stdout]   = note: the `riscv64gc-unknown-none-elf` target may not be installed
[INFO] [stdout]   = help: consider downloading the target with `rustup target add riscv64gc-unknown-none-elf`
[INFO] [stdout]   = help: consider building the standard library from source with `cargo build -Zbuild-std`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tychoos` (bin "tychoos-kernel") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "0d814a10b6a92f735b602eff6600f6f649286b140b3dcc58d27c7ff5dd5a5ae9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d814a10b6a92f735b602eff6600f6f649286b140b3dcc58d27c7ff5dd5a5ae9", kill_on_drop: false }`
[INFO] [stdout] 0d814a10b6a92f735b602eff6600f6f649286b140b3dcc58d27c7ff5dd5a5ae9