[INFO] fetching crate userspace_hub 0.1.128...
[INFO] testing userspace_hub-0.1.128 against try#2440211fe03bc45c89b6dc1a3df18382ce91e32b for pr-146098-1
[INFO] extracting crate userspace_hub 0.1.128 into /workspace/builds/worker-5-tc2/source
[INFO] removed /workspace/builds/worker-5-tc2/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-5-tc2/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate userspace_hub 0.1.128
[INFO] finished tweaking crates.io crate userspace_hub 0.1.128
[INFO] tweaked toml for crates.io crate userspace_hub 0.1.128 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate userspace_hub 0.1.128 on toolchain 2440211fe03bc45c89b6dc1a3df18382ce91e32b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate userspace_hub 0.1.128 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" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b81ff4739a6210254cf3bc630f3bb5d974cb9dae3764f02e2a92b8555fb8b7f4
[INFO] running `Command { std: "docker" "start" "-a" "b81ff4739a6210254cf3bc630f3bb5d974cb9dae3764f02e2a92b8555fb8b7f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b81ff4739a6210254cf3bc630f3bb5d974cb9dae3764f02e2a92b8555fb8b7f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b81ff4739a6210254cf3bc630f3bb5d974cb9dae3764f02e2a92b8555fb8b7f4", kill_on_drop: false }`
[INFO] [stdout] b81ff4739a6210254cf3bc630f3bb5d974cb9dae3764f02e2a92b8555fb8b7f4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9be9a5b7fc33a0feb0d117b741706518dc5e11f51e4014c58784ee3640f0a501
[INFO] running `Command { std: "docker" "start" "-a" "9be9a5b7fc33a0feb0d117b741706518dc5e11f51e4014c58784ee3640f0a501", kill_on_drop: false }`
[INFO] [stderr]    Compiling find-msvc-tools v0.1.2
[INFO] [stderr]    Compiling shlex v1.3.0
[INFO] [stderr]    Compiling ample v0.1.128
[INFO] [stderr]    Compiling cc v1.2.38
[INFO] [stderr]    Compiling userspace_build v0.1.128
[INFO] [stderr]    Compiling userspace v0.1.128
[INFO] [stderr]    Compiling kernelspace v0.1.128
[INFO] [stderr]    Compiling userspace_hub v0.1.128 (/opt/rustwide/workdir)
[INFO] [stdout] error: unwinding panics are not supported without std
[INFO] [stdout]   |
[INFO] [stdout]   = help: using nightly cargo, use -Zbuild-std with panic="abort" to avoid unwinding
[INFO] [stdout]   = note: since the core library is usually precompiled with panic="unwind", rebuilding your crate with panic="abort" may not be enough to fix the problem
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `userspace_hub` (bin "userspace_hub") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "9be9a5b7fc33a0feb0d117b741706518dc5e11f51e4014c58784ee3640f0a501", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9be9a5b7fc33a0feb0d117b741706518dc5e11f51e4014c58784ee3640f0a501", kill_on_drop: false }`
[INFO] [stdout] 9be9a5b7fc33a0feb0d117b741706518dc5e11f51e4014c58784ee3640f0a501