[INFO] fetching crate riscv-rt 0.16.0...
[INFO] building riscv-rt-0.16.0 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate riscv-rt 0.16.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate riscv-rt 0.16.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate riscv-rt 0.16.0
[INFO] tweaked toml for crates.io crate riscv-rt 0.16.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate riscv-rt 0.16.0 on toolchain 4987e9d4227139400384ab59296ffee3b0fb1183
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate riscv-rt 0.16.0 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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cecc6d4d13c50f411601766c548b54481400462eecad9645bdccd0182ec5addc
[INFO] running `Command { std: "docker" "start" "-a" "cecc6d4d13c50f411601766c548b54481400462eecad9645bdccd0182ec5addc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cecc6d4d13c50f411601766c548b54481400462eecad9645bdccd0182ec5addc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cecc6d4d13c50f411601766c548b54481400462eecad9645bdccd0182ec5addc", kill_on_drop: false }`
[INFO] [stdout] cecc6d4d13c50f411601766c548b54481400462eecad9645bdccd0182ec5addc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2352e224d2be700d57f3a56bc083e6f2dd869c841e5a45285864ef8d2fd514ad
[INFO] running `Command { std: "docker" "start" "-a" "2352e224d2be700d57f3a56bc083e6f2dd869c841e5a45285864ef8d2fd514ad", kill_on_drop: false }`
[INFO] [stderr]    Compiling riscv-target-parser v0.1.2
[INFO] [stderr]    Compiling embedded-hal v1.0.0
[INFO] [stderr]    Compiling critical-section v1.2.0
[INFO] [stderr]    Compiling riscv-pac v0.2.0
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]    Compiling riscv-rt v0.16.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling riscv-macros v0.3.0
[INFO] [stderr]    Compiling riscv-rt-macros v0.6.0
[INFO] [stderr]    Compiling riscv v0.15.0
[INFO] [stdout] warning: enum `Interrupt` is never used
[INFO] [stdout]   --> src/interrupts.rs:24:6
[INFO] [stdout]    |
[INFO] [stdout] 24 | enum Interrupt {
[INFO] [stdout]    |      ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.49s
[INFO] running `Command { std: "docker" "inspect" "2352e224d2be700d57f3a56bc083e6f2dd869c841e5a45285864ef8d2fd514ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2352e224d2be700d57f3a56bc083e6f2dd869c841e5a45285864ef8d2fd514ad", kill_on_drop: false }`
[INFO] [stdout] 2352e224d2be700d57f3a56bc083e6f2dd869c841e5a45285864ef8d2fd514ad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d6f4c045c863961e707d6a60f44c7b0bcd20107e5d30e8c67681da909c1dac83
[INFO] running `Command { std: "docker" "start" "-a" "d6f4c045c863961e707d6a60f44c7b0bcd20107e5d30e8c67681da909c1dac83", kill_on_drop: false }`
[INFO] [stderr]    Compiling panic-halt v1.0.0
[INFO] [stdout] warning: enum `Interrupt` is never used
[INFO] [stdout]   --> src/interrupts.rs:24:6
[INFO] [stdout]    |
[INFO] [stdout] 24 | enum Interrupt {
[INFO] [stdout]    |      ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling riscv-rt v0.16.0 (/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] [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 `riscv-rt` (example "multi_core") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `riscv-rt` (example "empty") due to 1 previous error
[INFO] [stdout] warning: enum `Interrupt` is never used
[INFO] [stdout]   --> src/interrupts.rs:24:6
[INFO] [stdout]    |
[INFO] [stdout] 24 | enum Interrupt {
[INFO] [stdout]    |      ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d6f4c045c863961e707d6a60f44c7b0bcd20107e5d30e8c67681da909c1dac83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6f4c045c863961e707d6a60f44c7b0bcd20107e5d30e8c67681da909c1dac83", kill_on_drop: false }`
[INFO] [stdout] d6f4c045c863961e707d6a60f44c7b0bcd20107e5d30e8c67681da909c1dac83