[INFO] fetching crate tychoos 0.0.1...
[INFO] building tychoos-0.0.1 against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237-1
[INFO] extracting crate tychoos 0.0.1 into /workspace/builds/worker-6-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-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate tychoos 0.0.1 on toolchain ad85bc524b1ad696e42061ad8338d382dffbdbe5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a0eddade354b32077e489d05fe2c7eb1c5716b0883d3f3a873ab1916e8a987df
[INFO] running `Command { std: "docker" "start" "-a" "a0eddade354b32077e489d05fe2c7eb1c5716b0883d3f3a873ab1916e8a987df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a0eddade354b32077e489d05fe2c7eb1c5716b0883d3f3a873ab1916e8a987df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0eddade354b32077e489d05fe2c7eb1c5716b0883d3f3a873ab1916e8a987df", kill_on_drop: false }`
[INFO] [stdout] a0eddade354b32077e489d05fe2c7eb1c5716b0883d3f3a873ab1916e8a987df
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a773b5f426c0d0bc33073ce336dfc5ac862de2572b3a1fbc1d787e91a86f0df8
[INFO] running `Command { std: "docker" "start" "-a" "a773b5f426c0d0bc33073ce336dfc5ac862de2572b3a1fbc1d787e91a86f0df8", 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" "a773b5f426c0d0bc33073ce336dfc5ac862de2572b3a1fbc1d787e91a86f0df8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a773b5f426c0d0bc33073ce336dfc5ac862de2572b3a1fbc1d787e91a86f0df8", kill_on_drop: false }`
[INFO] [stdout] a773b5f426c0d0bc33073ce336dfc5ac862de2572b3a1fbc1d787e91a86f0df8